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← ScienceWhich consequence results when exceeding the yield point of austenite?
A)Increased martensite formation upon quenching✓
B)Proeutectoid cementite network precipitation
C)Enhanced pearlite transformation kinetics
D)Full maintenance of equilibrium microstructures
💡 Explanation
Exceeding austenite's yield point causes plastic deformation, leading to increased imperfections like dislocations. These imperfections readily promote martensitic transformation because they act as nucleation sites, therefore forming more martensite, rather than maintaining equilibrium.
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