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← ScienceWhich consequence results when austenite decomposition is suppressed in steel?
A)Martensite formation and increased hardness✓
B)Pearlite formation and improved ductility
C)Bainite transformation, reduced impact strength
D)Ferrite precipitation, decreased tensile strength
💡 Explanation
If austenite decomposition is suppressed, the diffusionless transformation mechanism will form martensite. This increases hardness because the carbon atoms become trapped, hindering dislocation movement; therefore, martensite is formed rather than pearlite or ferrite, especially under rapid cooling conditions.
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