抄録
Combined tension-torsion experiments with hollow bar specimens of Cu-Al-Zn-Mn polycrystalline shape memory alloy (SMA) were performed at temperature T=Af+25K. Pseudoelastic strain in non-proportional loading-unloading along various simple stress (strain) paths in stress (strain)-controlled tests were found fully reversible. The experimental data of non-proportional tests, particularly the recorded transformation pathways, provide the first experimental informations about the progress of the general stress induced thermoelastic martensitic transformation in SMA polycrystal under general stress conditions whose forward and reverse transformation pathways are not identical.
