Wear-resistant copper alloys and synchronizer rings for automobi

Details Wear-resistant copper alloys and synchronizer rings for automobi Wear-resistant copper alloys and synchronizer rings for automobi

1992-11-03

1994-02-22

Wyszomierski, George

Metal treatment

Stock

Age or precipitation hardened or strengthened

148414, 420479, 420481, 420484, 420486, 192107M, C22C 904

Patent

active

052886832

ABSTRACT:
A wear-resistant copper alloy which consists essentially of 56 to 65 wt. % of Cu, 28 to 32 wt. % of Zn, 3.5 to 5.5 wt. % of Al, 0.5 to 2.0 wt. % of Fe, 1.0 to 3.0 wt. % of Ni, 0.1 to 1.0 wt. % of Nb, and 0.4 to 1.5 wt. % of Ti, provided that Ti+Nb is equal to or greater than 0.7 wt. %. The alloy includes two discrete intermetallic compounds comprising Ti-Ni-Fe-Al and Nb-Fe-Al uniformly dispersed in a microstructure preferably including at least 50 volume % beta phase and limited alpha and gamma phases. A synchronizer ring made of the copper alloy is also provided.

REFERENCES:
patent: 4148635 (1979-04-01), Smith
patent: 4874439 (1989-10-01), Akutsu
patent: 4965045 (1993-10-01), Giarda et al.
patent: 4995924 (1991-02-01), Akursu

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