Claims
- 1. A substantially manganese-free aluminum alloy rolled product consisting essentially of (in percent by weight): Cu 3.6-4.5%, Mg 1.0-1.6%, Zr 0.08-0.20%, Sc up to 0.06%, Fe up to 0.08%, Si up to 0.09%, Mn less than 0.05%,remainder aluminum and incident impurities.
- 2. An aluminum alloy rolled product according to claim 1, wherein Sc is present in an amount from 0.02-0.05%.
- 3. An aluminum alloy rolled product according to claim 1, wherein Zr is present in an amount from 0.08-0.14%.
- 4. An aluminum alloy rolled product according to claim 1, wherein Cu is present in an amount from 0.10-0.14%.
- 5. An aluminum alloy rolled product according to claim 1, having a recrystallized volume fraction of 5% maximum.
- 6. An aluminum alloy rolled product according to claim 1, wherein Mn is present in an amount of <0.01%.
- 7. An aluminum alloy rolled product according to claim 1, having one or more of the following combinations of properties:
a. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and an apparent fracture toughness Kapp(T-L) of more than 110 MPa{square root}m, measured according to ASTM E 561 in the T-L orientation on a specimen with a width of W=127 mm; b. an ultimate tensile strength in the longitudinal direction (UTS(L)) of more than 450 MPa, and an elongation at fracture in the longitudinal direction of more than 24%; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and a Kahn stress Re of at least 180 MPa.
- 8. An aluminum alloy rolled product according to claim 1 comprising a sheet having on or more of the following combinations of properties :
a. a UTS(L) of more than 500 MPa, preferably more than 520 Mpa, and even more preferably more than 530 Mpa, and a Kapp(T-L) of more than 75 Mpa{square root}m, measured according to ASTM E 647 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; b. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 450 Mpa, and preferably more than 460 Mpa, and a Kapp(L-T) of more than 77 Mpa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 350 MPa, preferably more than 400 MPa and even more preferably more than 450 MPa, and a Kahn stress Re of at least 190 MPa.
- 9. An aluminum alloy rolled product according to claim 1, comprising a sheet or thin plate with a thickness below about 12 mm in T351 temper, having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 1.3 10−4 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 4.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 8.0 10−4 mm/cycles at ΔK=20 MPa{square root}m, da/dn less than 16 10−4 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 25 10−4 mm/cycles at ΔK=30 MPa{square root}m.
- 10. An aluminum alloy rolled product according to claim 1 comprising a plate in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 3.0 10−5 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 1.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 1.0 10−3 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 3 10−3 mm/cycles at ΔK=30 MPa{square root}m.
- 11. An aluminum alloy rolled product according to claim 1, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 12. An aluminum alloy rolled product according to claim 1, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 13. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 1.
- 14. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 1.
- 15. A method for obtaining an aluminum alloy rolled product according to claim 1, wherein said rolled product comprises a plate, said method comprising:
(a) Casting a rolling ingot, followed by optional stress relieving ,and scalping, (b) Homogenizing at a temperature between 450 and 510° C., (c) Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., (d) Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., (e) Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, (f) Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 16. A method for obtaining a rolled product according to claim 1 comprising a sheet product, said method comprising:
(a) Casting a rolling ingot, followed by optional stress relieving, and scalping, (b) Homogenizing at a temperature between 470 and 530° C., (c) Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., (d) Optionally cold rolling, (e) Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, (f) Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 17. An alloy comprising a composition selected from the group consisting of: (in weight %)
- 18. A substantially manganese-free aluminum alloy rolled product comprising (in percent by weight): Cu 3.6-4.5%, Mg 1.0-1.6%, Zr 0.08-0.20%, Sc up to 0.06%, Fe up to 0.08%, Si up to 0.09%, Mn less than 0.05%,remainder aluminum and incident impurities.
- 19. An aluminum alloy rolled product according to claim 2, wherein Zr is present in an amount from 0.08-0.14%.
- 20. An aluminum alloy rolled product according to claim 2, wherein Cu is present in an amount from 0.10-0.14%.
- 21. An aluminum alloy rolled product according to claim 3, wherein Cu is present in an amount from 0.10-0.14%.
- 22. An aluminum alloy rolled product according to claim 2, having a recrystallized volume fraction of 5% maximum.
- 23. An aluminum alloy rolled product according to claim 3 having a recrystallized volume fraction of 5% maximum.
- 24. An aluminum alloy rolled product according to claim 4 having a recrystallized volume fraction of 5% maximum.
- 25. An aluminum alloy rolled product according to claim 2, wherein Mn is present in an amount of <0.01%.
- 26. An aluminum alloy rolled product according to claim 3, wherein Mn is present in an amount of <0.01%.
- 27. An aluminum alloy rolled product according to claim 4, wherein Mn is present in an amount of<0.01%.
- 28. An aluminum alloy rolled product according to claim 5, wherein Mn is present in an amount of <0.01%.
- 29. An aluminum alloy rolled product according to claim 2, having one or more of the following combinations of properties:
a. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and an apparent fracture toughness Kapp(T-L) of more than 110 MPa{square root}m, measured according to ASTM E 561 in the T-L orientation on a specimen with a width of W=127 mm; b. an ultimate tensile strength in the longitudinal direction (UTS(L)) of more than 450 MPa, and an elongation at fracture in the longitudinal direction of more than 24%; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and a Kahn stress Re of at least 180 MPa, and preferably at least 190 MPa.
- 30. An aluminum alloy rolled product according to claim 3, having one or more of the following combinations of properties:
a. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and an apparent fracture toughness Kapp(T-L) of more than 110 MPa{square root}m, measured according to ASTM E 561 in the T-L orientation on a specimen with a width of W=127 mm; b. an ultimate tensile strength in the longitudinal direction (UTS(L)) of more than 450 MPa, and an elongation at fracture in the longitudinal direction of more than 24%; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and a Kahn stress Re of at least 180 MPa.
- 31. An aluminum alloy rolled product according to claim 3, having one or more of the following combinations of properties:
a. tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and an apparent fracture toughness Kapp(TL) of more than 110 MPa{square root}m, measured according to ASTM E 561 in the T-L orientation on a specimen with a width of W=127 mm; b. an ultimate tensile strength in the longitudinal direction (UTS(L)) of more than 450 MPa, and an elongation at fracture in the longitudinal direction of more than 24%; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and a Kahn stress Re of at least 180 MPa..
- 32. An aluminum alloy rolled product according to claim 2 comprising a plate having on or more of the following combinations of properties:
a. a UTS(L) of more than 500 MPa, and a Kapp(T-L) of more than 75 MPa{square root}m, measured according to ASTM E 647 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; b. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 450 MPa, and a Kapp(L-T) of more than 77 MPa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 350 MPa, and a Kahn stress Re of at least 190 MPa.
- 33. An aluminum alloy rolled product according to claim 3 comprising a plate having on or more of the following combinations of properties:
a. a UTS(L) of more than 500 MPa, and a Kapp(T-L) of more than 75 MPa{square root}m, measured according to ASTM E 647 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; b. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 450 MPa, and a Kapp(L-T) of more than 77 MPa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 350 MPa, and a Kahn stress Re of at least 190 MPa.
- 34. An aluminum alloy rolled product according to claim 4 comprising a plate having on or more of the following combinations of properties:
a. a UTS(L) of more than 500 MPa, and a Kapp(T-L) of more than 75 MPa{square root}m, measured according to ASTM E 647 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; b. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 450 MPa, and a Kapp(L-T) of more than 77 MPa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 350 MPa, and a Kahn stress Re of at least 190 MPa.
- 35. An aluminum alloy rolled product according to claim 5 comprising a plate having on or more of the following combinations of properties:
a. a UTS(L) of more than 500 MPa, and a Kapp(T-L) of more than 75 MPa{square root}m, measured according to ASTM E 647 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; b. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 450 MPa, and a Kapp(L-T) of more than 77 MPa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 350 MPa, and a Kahn stress Re of at least 190 MPa.
- 36. An aluminum alloy rolled product according to claim 6 comprising a plate having on or more of the following combinations of properties:
a. a UTS(L) of more than 500 MPa, and a Kapp(T-L) of more than 75 MPa{square root}m, measured according to ASTM E 647 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; b. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 450 MPa, and a Kapp(L-T) of more than 77 MPa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 350 MPa, and a Kahn stress Re of at least 190 MPa.
- 37. An aluminum alloy rolled product according to claim 7 comprising a plate having on or more of the following combinations of properties:
a. a UTS(L) of more than 500 MPa, and a Kapp(T-L) of more than 75 MPa{square root}m, measured according to ASTM E 647 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; b. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 450 MPa, and a Kapp(L-T) of more than 77 MPa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; c. a tensile yield strength in the longitudinal direction (TYS(L)) of more than 350 MPa, and a Kahn stress Re of at least 190 MPa.
- 38. An aluminum alloy rolled product according to claim 2 comprising a sheet or thin plate with a thickness below about 12 mm in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 1.3 10−4 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 4.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 8.0 10−4 mm/cycles at ΔK=20 MPa{square root}m, da/dn less than 16 10−4 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 25 10−4 mm/cycles at ΔK=30 MPa{square root}m.
- 39. An aluminum alloy rolled product according to claim 3, comprising a sheet or thin plate with a thickness below about 12 mm in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 1.3 10−4 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 4.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 8.0 10−4 mm/cycles at ΔK=20 MPa{square root}m, da/dn less than 16 10−4 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 25 10−4 mm/cycles at ΔK=30 MPa{square root}m.
- 40. An aluminum alloy rolled product according to claim 4 comprising a sheet or thin plate with a thickness below about 12 mm in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 1.3 10−4 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 4.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 8.0 10−4 mm/cycles at ΔK=20 MPa{square root}m, da/dn less than 16 10−4 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 25 10−4 mm/cycles at ΔK=30 MPa{square root}m.
- 41. An aluminum alloy rolled product according to claim 5 comprising a sheet or thin plate with a thickness below about 12 mm in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 1.3 10−4 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 4.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 8.0 10−4 mm/cycles at ΔK=20 MPa{square root}m, da/dn less than 16 10−4 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 25 10−4 mm/cycles at ΔK=30 MPa{square root}m.
- 42. An aluminum alloy rolled product according to claim 6 comprising a sheet or thin plate with a thickness below about 12 mm in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 1.3 10−4 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 4.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 8.0 10−4 mm/cycles at ΔK=20 MPa{square root}m, da/dn less than 16 10−4 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 25 10−4 mm/cycles at ΔK=30 MPa{square root}m.
- 43. An aluminum alloy rolled product according to claim 7 comprising a sheet or thin plate with a thickness below about 12 mm in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 1.3 10−4 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 4.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 8.0 10−4 mm/cycles at ΔK=20 MPa{square root}m, da/dn less than 16 10−4 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 25 10−4 mm/cycles at ΔK=30 MPa{square root}m.
- 44. An aluminum alloy rolled product according to claim 8 comprising a sheet or thin plate with a thickness below about 12 mm in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 1.3 10−4 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 4.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 8.0 10−4 mm/cycles at ΔK=20 MPa{square root}m, da/dn less than 16 10−4 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 25 10−4 mm/cycles at ΔK=30 MPa{square root}m.
- 45. An aluminum alloy rolled product according to claim 2 comprising a plate in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 3.0 10−5 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 1.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 1.0 10−3 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 3 10−3 mm/cycles at ΔK=30 MPa{square root}m.
- 46. An aluminum alloy rolled product according to claim 3 comprising a plate in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 3.0 10−5 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 1.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 1.0 10−3 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 3 10−3 mm/cycles at ΔK=30 MPa{square root}m.
- 47. An aluminum alloy rolled product according to claim 4 comprising a plate in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 3.0 10−5 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 1.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 1.0 10−3 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 3 10−3 mm/cycles at ΔK=30 MPa{square root}m.
- 48. An aluminum alloy rolled product according to claim 5, comprising a plate in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 3.0 10−5 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 1.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 1.0 10−3 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 3 10−3 mm/cycles at ΔK=30 MPa{square root}m.
- 49. An aluminum alloy rolled product according to claim 6 comprising a plate in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions:
da/dn less than 3.0 10−5 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 1.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 1.0 10−3 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 3 10−3 mm/cycles at ΔK=30 MPa{square root}m.
- 50. An aluminum alloy rolled product according to claim 7 comprising a plate in T351 temper, having a da/dn in T-L direction which fulfils at least one of the following conditions
da/dn less than 3.0 10−5 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 1.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 1.0 10−3 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 3 10−3 mm/cycles at ΔK=30 MPa{square root}m.
- 51. An aluminum alloy rolled product according to claim 8 comprising a plate in T351 temper having a da/dn in T-L direction which fulfils at least one of the following conditions
da/dn less than 3.0 10−5 mm/cycles at ΔK=10 MPa{square root}m, da/dn less than 1.0 10−4 mm/cycles at ΔK=15 MPa{square root}m, da/dn less than 1.0 10−3 mm/cycles at ΔK=25 MPa{square root}m, da/dn less than 3 10−3 mm/cycles at ΔK=30 MPa{square root}m.
- 52. An aluminum alloy rolled product according to claim 2, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 53. An aluminum alloy rolled product according to claim 3, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 54. An aluminum alloy rolled product according to claim 4, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 55. An aluminum alloy rolled product according to claim 5, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 56. An aluminum alloy rolled product according to claim 6, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 57. An aluminum alloy rolled product according to claim 7, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 58. An aluminum alloy rolled product according to claim 8, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 59. An aluminum alloy rolled product according to claim 9, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 60. An aluminum alloy rolled product according to claim 10, exhibiting in a corrosion test according to ASTM G 110, a maximum intergranular attack of less than 80 μm in T39 temper, and/or less than 200 μm in T851 temper, and/or less than 250 μm in T89 temper, and/or less than 300 μm in T351 temper.
- 61. An aluminum alloy rolled product according to claim 2, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 62. An aluminum alloy rolled product according to claim 3, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 63. An aluminum alloy rolled product according to claim 4, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 64. An aluminum alloy rolled product according to claim 5, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 65. An aluminum alloy rolled product according to claim 6, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 66. An aluminum alloy rolled product according to claim 7, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 67. An aluminum alloy rolled product according to claim 8, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 68. An aluminum alloy rolled product according to claim 9, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 69. An aluminum alloy rolled product according to claim 10, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 70. An aluminum alloy rolled product according to claim 11, exhibiting in a corrosion test according to ASTM G 110 a maximum intergranular attack of less than 70 μm in T39 temper, and/or less than 180 μm in T851 temper, and/or less than 220 μm in T89 temper, and/or less than 270 μm in T351 temper.
- 71. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 2.
- 72. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 3.
- 73. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 4.
- 74. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 5.
- 75. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 6.
- 76. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 7.
- 77. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 8.
- 78. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 9.
- 79. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 10.
- 80. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 11.
- 81. A lower wing skin structural member made in an aluminum alloy rolled plate product according to claim 12.
- 82. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 2.
- 83. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 3.
- 84. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 4.
- 85. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 5.
- 86. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 6.
- 87. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 7.
- 88. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 8.
- 89. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 9.
- 90. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 10.
- 91. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 11.
- 92. A fuselage skin member made in an aluminum alloy rolled plate or sheet product according to claim 12.
- 93. A method for obtaining an aluminum alloy rolled product according to claim 2, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 94. A method for obtaining an aluminum alloy rolled product according to claim 3, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 95. A method for obtaining an aluminum alloy rolled product according to claim 4, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 96. A method for obtaining an aluminum alloy rolled product according to claim 5, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 97. A method for obtaining an aluminum alloy rolled product according to claim 6, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 98. A method for obtaining an aluminum alloy rolled product according to claim 7, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 99. A method for obtaining an aluminum alloy rolled product according to claim 8, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 100. A method for obtaining an aluminum alloy rolled product according to claim 9, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 101. A method for obtaining an aluminum alloy rolled product according to claim 10, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving ,and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 102. A method for obtaining an aluminum alloy rolled product according to claim11, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 103. A method for obtaining an aluminum alloy rolled product according to claim 12, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 104. A method for obtaining an aluminum alloy rolled product according to claim13, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 105. A method for obtaining an aluminum alloy rolled product according to claim 14, wherein said rolled product comprises a plate, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 450 and 510° C., Hot-rolling on a reversing mill, preferably with an exit temperature between 350 and 390° C., Optionally, for plate with a thickness of less than about 30 mm, conducting at least one intermediate reheating to about 480° C., followed by one or more hot-rolling passes, the final exit temperature optionally being between 350 and 370° C., Solution heat treating at a temperature between 490 and 510° C., followed by water quenching and natural aging, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 106. An aluminum alloy wherein when employed as plate or sheet, presents a compromise between fracture toughness and mechanical strength in that it is suitable for use in lower wingskin as well as fuselage products,
wherein when used as a sheet or thin plate fulfilling at least one of the following conditions (i) a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and an apparent fracture toughness Kapp(T-L) of more than 110 MPa{square root}m, measured according to ASTM E 561 in the T-L orientation on a specimen with a width of W=127 mm; (ii) an ultimate tensile strength in the longitudinal direction (UTS(L)) of more than 450 MPa, and an elongation at fracture in the longitudinal direction of more than 24%; and/or (iii) a tensile yield strength in the longitudinal direction (TYS(L)) of more than 400 MPa, and a Kahn stress Re of at least 180 MPa,, and further wherein, when employed as thick plate having at least one the following combinations of properties : (i) a UTS(L) of more than 500 MPa, and a Kapp(L-T) of more than 75 MPa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; (ii) a tensile yield strength in the longitudinal direction (TYS(L)) of more than 450 MPa and a Kapp(L-T) of more than 77 MPa{square root}m, measured according to ASTM E 561 on a 6.35 mm thick C(T) specimen with a width of W=40 mm; and/or (iii) a tensile yield strength in the longitudinal direction (TYS(L)) of more than 350 MPa and a Kahn stress Re of at least 190 MPa.
- 107. A method for obtaining a rolled product according to claim 2 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 108. A method for obtaining a rolled product according to claim 3 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 109. A method for obtaining a rolled product according to claim 4 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 110. A method for obtaining a rolled product according to claim 5 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 111. A method for obtaining a rolled product according to claim 6 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 112. A method for obtaining a rolled product according to claim 7 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 113. A method for obtaining a rolled product according to claim 8 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 114. A method for obtaining a rolled product according to claim 9 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 115. A method for obtaining a rolled product according to claim 10 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 116. A method for obtaining a rolled product according to claim 11 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 117. A method for obtaining a rolled product according to claim 12 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 118. A method for obtaining a rolled product according to claim 13 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
- 119. A method for obtaining a rolled product according to claim 14 comprising a sheet product, said method comprising:
Casting a rolling ingot, followed by optional stress relieving, and scalping, Homogenizing at a temperature between 470 and 530° C., Hot-rolling down to a thickness of less than 12 mm, and not more than 200% of final thickness, with a final exit temperature between 230 and 350° C., Optionally cold rolling, Solution heat treating at a temperature between 490 and 510° C., followed by water quenching, Cold working by stretching alone or cold rolling followed by stretching, optionally followed by artificial aging.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority from Provisional Application Serial No. 60/394,234, filed Jul. 9, 2002, the content of which is incorporated herein by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60394234 |
Jul 2002 |
US |