Copper-base shape-memory alloys

Details Copper-base shape-memory alloys Copper-base shape-memory alloys

1986-05-07

1988-06-14

Rutledge, L. Dewayne

Metal treatment

Stock

Mechanical memory

420479, C22C 904

Patent

active

047509538

ABSTRACT:
A copper-base shape-memory alloy consisting essentially of 15-35% Zn, 3.2-10% Al, 0.01-1% Si, at least one element selected from the group of 0.5-2% Ti, 0.01-1% Cr, 0.01-8% Mn, 0.01-2% Co and 2.1-4% Ni, the balance being Cu and incidental impurities, the percent being by weight is disclosed.
This alloy has high resistance to intercrystalline cracking and thermal cycling as well as improved shape-memory properties.

REFERENCES:
patent: 4242132 (1980-12-01), Shapiro et al.
patent: 4249942 (1981-02-01), Shapiro et al.
patent: 4472213 (1984-09-01), Tabei et al.

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