Claims
- 1. A method for improving properties of an alloy comprising steps of:
- (a) selecting a raw alloy from the group consisting of an ingot, alloy layers, compacted metal powder, and stacks of at least two pure elements;
- (b) providing a working apparatus for working said raw alloy, said working apparatus comprising a first extruding vessel, a second extruding vessel and an extruding die therebetween, said extruding die having a small passage, said small passage being a slit or a hole;
- (c) preheating said raw alloy to a softening temperature to create a pre-heated raw alloy; and
- (d) repetitively kneading said pre-heated raw alloy to a desired extent in said working apparatus by reciprocatingly passing said raw alloy through said small passage between said first and second extruding vessels.
- 2. A method according to claim 1 wherein said repetitive kneading step d) is performed by allowing said raw alloy to be alternately force-applied from different directions.
- 3. A method according to claim 1 wherein said raw alloy is prepared by
- (i) preparing first component layers;
- (ii) preparing second component layers; and
- (iii) alternately stacking said first and second component layers.
- 4. A method according to claim 1 wherein said raw alloy is an alloy ingot.
- 5. A method according to claim 1 wherein said raw alloy is prepared by
- (1) preparing alloy layers; and
- (2) stacking said layers.
- 6. A method according to claim 5 wherein said alloy layers are produced by a rapid solidification.
- 7. A method according to claim 1, wherein the size of said small passage is substantially smaller than the size of said raw alloy.
- 8. A method according to claim 1, wherein said small passage has a diameter of 6.3 mm.
Parent Case Info
This application is a continuation of application Ser. No. 08/018,191, filed Feb. 16, 1993, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3490955 |
Winter et al. |
Jan 1970 |
|
4737340 |
Dolgin |
Apr 1988 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
1661241 |
Jul 1991 |
SUX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
18191 |
Feb 1993 |
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