Method of casting articles of a bulk-solidifying amorphous alloy
Abstract
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.
- Inventors:
-
- Laguna Niguel, CA
- Pasadena, CA
- Aliso Viejo, CA
- Issue Date:
- Research Org.:
- California Institute of Technology (CalTech), Pasadena, CA (United States)
- OSTI Identifier:
- 871793
- Patent Number(s):
- 5797443
- Assignee:
- Amorphous Technologies International (Laguna Niguel, CA); California Institute of Technology (Pasadena, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22D - CASTING OF METALS
- DOE Contract Number:
- FG03-86ER45242
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; casting; articles; bulk-solidifying; amorphous; alloy; charge; cast; mold; temperature; crystallized; melting; permitted; solidify; form; article; oxygen; content; limited; operable; level; excessively; contents; produce; premature; crystallization; operation; preferably; heated; threshold; eliminate; heterogeneous; nucleation; sites; cooled; optionally; held; period; time; thereafter; threshold temperature; oxygen content; melting temperature; preferably heated; nucleation sites; bulk-solidifying amorphous; casting operation; amorphous alloy; /164/148/
Citation Formats
Lin, Xianghong, Johnson, William L, and Peker, Atakan. Method of casting articles of a bulk-solidifying amorphous alloy. United States: N. p., 1998.
Web.
Lin, Xianghong, Johnson, William L, & Peker, Atakan. Method of casting articles of a bulk-solidifying amorphous alloy. United States.
Lin, Xianghong, Johnson, William L, and Peker, Atakan. Thu .
"Method of casting articles of a bulk-solidifying amorphous alloy". United States. https://www.osti.gov/servlets/purl/871793.
@article{osti_871793,
title = {Method of casting articles of a bulk-solidifying amorphous alloy},
author = {Lin, Xianghong and Johnson, William L and Peker, Atakan},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}