Valve seat made of secondary hardening-type high temperature wea

Details Valve seat made of secondary hardening-type high temperature wea Valve seat made of secondary hardening-type high temperature wea

1993-07-07

1995-11-14

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75238, 75239, 75240, 75243, 75246, 419 14, 419 25, 419 26, 419 37, 419 38, C22C 2800

Patent

active

054662761

ABSTRACT:
A secondary hardening type high temperature wear-resistant sintered alloy body comprising 0.4 to 15 wt. % of at least one species of metal carbide forming element which is selected from the group consisting of W, Mo, V, Ti, Nb, Ta and B; 5 to 35 wt. % of at least one species of austenite forming element which is selected from the group consisting of Ni, Co, Cu, and Cr; 0.2 to 1.2 wt. % of C; and 0.04 to 0.2 wt. % of Al consisting essentially the remainder of Fe, wherein the alloy body contains an austenite phase which is capable of martensitic transformation.

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