C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/17, 205/5
C22C 30/06 (2006.01) B22F 3/20 (2006.01) C22C 1/04 (2006.01)
Patent
CA 1112912
ABSTRACT OF THE DISCLOSURE Solid bodies of copper-zinc-aluminum alloys having beta-crystal structure are manufactured by a powder-metallurgic process. Starting with a powder comprising 10-40% by weight of Zn, 1-12% by weight of Al and the balance Cu, the solid bodies are formed by means of a cold compacting step, an optional hot compacting step and a hot extrusion step. The alloy of the invention has a shape memory effect with 1.5% reversible elongation at temperatures above minus 60° C. Rods made of the alloy exhibit pseudo-elastic properties during bending and stretching experiments at a temperature range of from 0° to 50°C.
318717
Aernoudt Etienne A.d.
Delaey Lucas J.a.e.
Deruyttere Andre E.a.
Roos Josef R.
Fetherstonhaugh & Co.
Leuven Research & Development V.z.w.
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