Carbide-dispersed type Fe-base sintered alloy excellent in wear

Details Carbide-dispersed type Fe-base sintered alloy excellent in wear Carbide-dispersed type Fe-base sintered alloy excellent in wear

1987-10-16

1989-07-04

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75242, C22C 2906

Patent

active

048447382

ABSTRACT:
A carbide-dispersed type Fe-base sintered alloy which has excellent wear resistance and consists essentially of: 4-6.5% by weight C; 10-40% by weight Cr; 2-25% by weight Mo; 0.1-5% by weight at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, and Ta; and the balance of Fe and inevitable impurities. If required, the alloy may further contain 0.1-15% by weight at least one element selected from the group consisting of Co and Ni, and/or 0.1-10% by weight W. The alloy has a structure wherein carbides are dispersed throughout the matrix in an amount of at least 71% by volume, and the alloy has at least 97% theoretical density ratio.

REFERENCES:
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patent: 4487630 (1984-12-01), Crook et al.
patent: 4584019 (1986-04-01), Kesting
patent: 4604781 (1986-08-01), Rankin, III
patent: 4636252 (1987-01-01), Yoshimura et al.

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