T222 production by powder metallurgy

Details T222 production by powder metallurgy T222 production by powder metallurgy

1997-12-24

1999-08-17

Mai, Ngoclan

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Plural heating steps including sintering

419 55, 419 26, 419 28, 419 29, B22F 300

Patent

active

059406755

ABSTRACT:
Powder metallurgy production of T222 alloy affording properties comparable to melt derived T222, but at higher yields and lower costs, is enabled by blending component powders of minus 325 mesh and sintering at 2,400.degree. C. in three sinter steps and utilizing a slow ramp up in the first sinter step and cold isostatic pressing prior to the first sinter step and isostatic press densification in conjunction with at least the first sinter step.

REFERENCES:
patent: 3166414 (1965-01-01), France et al.
patent: 3183085 (1965-05-01), France et al.
patent: 3243290 (1966-03-01), Clark et al.
patent: 3390983 (1968-07-01), Ammon et al.
patent: 3498854 (1970-03-01), Buckman

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