Title:
METHODS OF FORMING STEEL
Document Type and Number:
WIPO Patent Application WO2000071759
Kind Code:
A3
Abstract:
In one aspect, the invention encompasses a method of forming a steel. A metallic glass is formed and at least a portion of the glass is converted to a crystalline steel material having a nanocrystalline scale grain size. In another aspect, the invention encompasses another method of forming a steel. A molten alloy is formed and cooled at a rate which forms a metallic glass. The metallic glass is devitrified to convert the glass to a crystalline steel material having a nanocrystalline scale grain size. In yet another aspect, the invention encompasses another method of forming a steel. A first metallic glass steel substrate is provided (100), and a molten alloy is formed (102) over the first metallic glass steel substrate (100) to heat and devitrify at least some of the underlying metallic glass (108) of the substrate.
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Inventors:
BRANAGAN DANIEL J
BURCH JOSEPH V
BURCH JOSEPH V
Application Number:
PCT/US2000/014080
Publication Date:
May 31, 2001
Filing Date:
May 22, 2000
Export Citation:
Assignee:
BECHTEL BWXT IDAHO LLC (US)
International Classes:
B22D23/00; B22F1/00; B22F5/00; B22F9/00; B22F9/08; C21D1/09; C21D6/00; C22C33/00; C22C33/04; C22C38/00; C22C38/36; C22C38/60; C22C45/02; C23C4/04; C23C4/08; C23C26/00; C21D9/30; (IPC1-7): C22C45/02; C21D1/06
Foreign References:
| US4576653A | 1986-03-18 | |||
| JPH01275717A | 1989-11-06 | |||
| USRE32925E | 1989-05-18 |
Other References:
See also references of EP 1198605A4
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