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Which outcome occurs when high current passes through a shape memory alloy wire exceeding its transition temperature due to Joule heating?

A)Austenite phase permanently reverts to martensite
B)Deformation force is reduced temporarily
C)Crystal structure momentarily reaches supercooling
D)Ferrite inclusions precipitate within the structure

💡 Explanation

Deformation force diminishes because increased temperature surpasses its austenite finish temperature, causing a phase change via martensitic transformation. Therefore, reduced force occurs rather than permanent changes or crystal effects because it's thermodynamics rather than specific alloys.

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