Method of casting articles of a bulk-solidifying amorphous alloy
A casting charge of a bulk-solidifying amorphous alloy is cast into a mold from a temperature greater than its crystallized melting temperature, and permitted to solidify to form an article. The oxygen content of the casting charge is limited to an operable level, as excessively high oxygen contents produce premature crystallization during the casting operation. During melting, the casting charge is preferably heated to a temperature above a threshold temperature to eliminate heterogeneous crystallization nucleation sites within the casting charge. The casting charge may be cast from above the threshold temperature, or it may be cooled to the casting temperature of more than the crystallized melting point but not more than the threshold temperature, optionally held at this temperature for a period of time, and thereafter cast. 8 figs.
- Research Organization:
- California Institute of Technology (CalTech), Pasadena, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG03-86ER45242
- Assignee:
- Amorphous Technologies International, Laguna Niguel, CA (United States); California Inst. of Tech., Pasadena, CA (United States)
- Patent Number(s):
- US 5,797,443/A/
- Application Number:
- PAN: 8-720,483
- OSTI ID:
- 672714
- Resource Relation:
- Other Information: PBD: 25 Aug 1998
- Country of Publication:
- United States
- Language:
- English
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