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Which risk increases when localized die wear appears during isothermal forging?

A)Increased workpiece cooling rate
B)Alloy grain boundary sliding
C)Exceeded specific heat threshold
D)Workpiece dimensional inaccuracy

💡 Explanation

Workpiece dimensional inaccuracy increases when die wear occurs because material flows into worn die regions, altering the intended shape via plastic deformation. This causes forging deviation rather than temperature effects, therefore resulting dimensional errors from die wear.

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