Abstract
The isothermal internal friction (IF) behavior of dual-phase Ni 52 Mn 32 In 16 magnetic shape memory alloy was investigated by dynamic mechanical analysis. The contribution of the isothermal IF to the overall IF peak is close to 90%. This high isothermal IF is obtained over a large working temperature range of 88 °C, which is broadened by the concurrence of the martensitic transformation and the intermartensitic transformation. An strong hindering effect on structural transformations is identified by microstructural observations.
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