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← ScienceWhich consequence results when differential superheating of molten tin occurs during its phase transition to solid?
A)Stresses cause brittle intermetallic formation✓
B)Extensive alpha-beta phase region shift
C)Dross formation accelerates surface corrosion
D)Tin pest propagation increases lattice vacancies
💡 Explanation
Uneven cooling creates differential stresses that cause brittle intermetallic formation because volume changes drastically during solidification; the mechanism is solid-state diffusion. Therefore, intermetallics occur rather than accelerated corrosion from dross because dross depends on ambient exposure, nor propagation of tin pest which requires lower temperatures.
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