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← ScienceWhich outcome occurs when repeated annealing above a crystal's recrystallization temperature?
A)Increased dislocation density in grain boundaries
B)Decreased creep resistance at high temperatures✓
C)Enhanced Hall effect voltage sensitivity
D)Formation of Laves phase precipitates
💡 Explanation
Annealing causes grain growth via a diffusion-controlled mass transfer mechanism, where larger grains consume smaller ones to minimize the system's free energy, therefore reducing creep resistance, because larger grains deform more easily rather than halting the motion via pinned domain walls.
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