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← TechnologyWhich outcome occurs when excessive force is applied during camshaft grinding?
A)Workpiece surface temper embrittlement occurs✓
B)Grinding wheel bond systematically fractures
C)Coolant filtration backpressure stabilizes
D)Dressing tool wear rate decreases
💡 Explanation
Excessive force increases local temperature, causing surface temper embrittlement due to martensite formation, rather than plastic deformation directly; the *martensitic transformation* yields this outcome, because high heat changes steel crystal structures; therefore, hardness increases but toughness decreases, making the surface brittle.
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