Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1988-03-08
1989-08-29
Lechert, Jr., Stephen J.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75246, 419 10, 419 11, 419 27, 419 29, 419 30, 419 58, C22C 2914
Patent
active
048613738
ABSTRACT:
The present invention relates to an infiltrated ferrous powder metal part containing certain additives, yielding a radically improved unnotched impact strength without sacrificing tensile strength. Fatigue strength is also improved. In addition, improved dimensional control is obtained during infiltration. The microstructure is also improved, with smoothing or rounding of the formerly sharp angled copper filled pores. The invention also comprises the method of achieving these results.
REFERENCES:
patent: 4437890 (1984-03-01), Hayasaka et al.
patent: 4606768 (1986-08-01), Svilar et al.
patent: 4731118 (1988-03-01), Svilar et al.
patent: 4769071 (1988-09-01), Klar et al.
Berry David F.
Klar Erhard
Svilar Mark
Lechert Jr. Stephen J.
SCM Metal Products Inc.
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