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← ScienceWhich outcome occurs when latent heat input fails during metal casting?
A)Premature solidification and incomplete mold filling✓
B)Increased alloy segregation and microstructural defects
C)Reduced porosity with uniform grain structure
D)Elevated thermal stress concentration and cracking
💡 Explanation
Premature solidification occurs because insufficient latent heat input prevents full phase transition; therefore, incomplete mold filling results rather than uniform structure. The mechanism is undercooling below the alloy's liquidus point causing rapid crystallization.
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