Abstract
The present work focuses on mechanical properties of Ni3Ta alloy. Reversible martensitic transformation is found in the temperature range of 520–600 K. At room temperature Ni3Ta alloy mainly consists of a monoclinic phase. Ni3Ta alloy exhibits a forward indentation size effect, the value of load independence hardness is equal to 5.3 GPa. The compressive behavior is dependent on strain rate, which is characterized by small activation volume (6.4 b3), corresponding to the grain boundary sliding as the dominant deformation mechanism.
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