Heavy metal alloy and method for its production

Details Heavy metal alloy and method for its production Heavy metal alloy and method for its production

1994-06-06

1995-10-31

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

148668, 419 29, 419 54, C22C 2704, B22F 300

Patent

active

054625769

ABSTRACT:
The invention relates to a heavy metal alloy comprising from about 85 to 98 weight-% tungsten that is essentially present in the form of globular tungsten grains, and nickel and cobalt in a Ni/Co weight ratio approximately between 1.6 and 3.5 as binder elements in an austenitic binder phase which also contains tungsten in solid solution, wherein the alloy sintered from the appropriate powders is subjected to a heat treatment, and a method for its production. The alloy permits the attainment of very high strength values with the retention of high ductility.

REFERENCES:
patent: 3979234 (1976-09-01), Northcutt, Jr. et al.
patent: 4012230 (1977-03-01), Dickinson et al.
patent: 4762559 (1988-08-01), Penrice et al.
patent: 4918140 (1990-04-01), Peccoux et al.
patent: 5064462 (1991-11-01), Mullendore et al.
Kang et al., "Einfluss der Warmebehandlung auf die mechanischen Eigenschaften der 90W-7Ni-3Fe-Schwermetallegierung.sup.1 ", Z. Metallkunde, vol. 78, pp. 250-258 (1987).

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