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← ScienceWhich failure mode most directly results from excessive thermal gradients during Bridgman crystal growth?
A)Constitutional supercooling concentrates impurities✓
B)Kirkendall voids diminish mechanical strength
C)Grain boundary sliding increases creep
D)Phase separation changes material properties
💡 Explanation
Constitutional supercooling occurs during Bridgman growth because segregation concentrates impurities at the interface, lowering the melting point locally. Therefore, this results rather than significant grain boundary sliding, because temperatures are below levels needed for this mechanism.
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