While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to ______________ × Tm (where, Tm Melting temperature) ?
Correct answer: C. 0.70
- A. 0.25
- B. 0.45
- C. 0.70
- D. 0.95
Explanation
Alloys generally recrystallise at a higher fraction of their melting temperature than pure metals because solute atoms and other phases hinder grain-boundary movement. The commonly used approximate value is 0.7 Tm.
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