Abstract

The progress of thermoelastic martensitic transformation/MT/ in Clu-Al-Zn-Mn shape memory alloy/SMA/ polycrystals subjected to nonproportional thermomechanical loadings was investigated by combined tension and torsion of tubular specimens (T A f ). The strain response of SMA polycrystal to various thermomechanical loadings along prescribed stress-temperature paths was examined. It has been shown that the SMA polycrystal can be loaded - unloaded repeatedly by the change of temperature and general combination of external forces of axial load and torque with relatively well defined, path dependent but well reproducible strain path response.

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