Which mechanical outcome arises when latent heat addition peaks during rapid oil quenching following steel heat treatment?

💡 Explanation

Quench cracking risk increases due to volumetric expansion and contraction stress. Uneven cooling causes differing phase transformations. Thermal shock exceeds tensile strength, therefore, cracking is triggered based on uneven expansion, rather than slower martensite or boundary carbides which require diffusion at lower temperatures.

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