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Which risk increases when progressive die stamping exceeds tolerance limits due to thermal expansion?

A)Increased material density locally
B)Work hardening and fracture initiation
C)Improved surface finish conformity
D)Decreased cutting tool engagement

💡 Explanation

Work hardening increases due to localized strain; the **Bauschinger effect**, a form of material anisotropy, is induced because the localized plastic deformation reverses with each stroke, predisposing the material to fatigue, therefore, fracture likelihood increases rather than consistent deformation distribution across operations.

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