Figure 3

(a) Compressive stress-strain curves of Cu-12.2Al-4.3Fe-6.6Mn alloy during the 1st (black) and the 50th (red) thermomechanical cycles. The arrow represents the recovery strain of the deformed sample by heating. (b) Microstructure of Cu-12.2Al-4.3Fe-6.6Mn alloy after compressed to a pre-strain of 12% and unloading.