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← ScienceWhich 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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