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← ScienceWhich consequence results when rapid cooling triggers uncontrolled nucleation in liquid steel?
A)Dendritic microstructure formation✓
B)Increased creep resistance develops
C)Austenite grain size increases
D)Homogeneous composition improvement
💡 Explanation
Rapid cooling enhances the driving force for solidification, thus promoting dendritic microstructure formation because solidification progresses faster than diffusion. Therefore, dendrites form, rather than uniform, equiaxed grains, because diffusion is too slow.
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