Purposes to prepare Shape Memory Alloys by the powder-metallurgical(P/M) method are to precisely control the alloy composition and to obtain fine grain sizes in especially Cu-based alloys. These P/M-SMA's are useful for the high damping property and complicated shape materials. The authors deal with the following items using P/M Cu-25Zn-9.25Al(at%) alloys: 1) Comparison of shape memory characters between the melted(normal process) and the P/M-process alloys, i.e., the transformation temperatures(Ms, Mf, As and Af) and their hys-teresis, and stress-strain relations upon shape memory and superelastic treatments and also upon cyclic(load-unload) treatments. 2) Effect of aging treatment on the transformation temperatures.
The experimental results obtained are briefly discussed.
