Abstract
The effect of thermal cycling on the microstructure, martensitic transformation behavior and shape memory characteristic of the dual-phase Ni58Mn25Ga17 high-temperature shape memory alloy was investigated. The Ni58Mn25Ga17 alloy showed high thermal stability upon cycling up to 500 thermal cycles between 298 and 923 K without obvious differences in its microstructure and martensitic transformation behavior. Shape memory strain decreased slightly after 500 thermal cycles but remained over 2.6%.
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