Which of the following decrease with strain hardening______________?
Correct answer: D. Corrosion resistance
- A. Surface hardness
- B. Strength
- C. Proportion limit
- D. Corrosion resistance
Explanation
Strain hardening generally increases hardness, strength, and proportional limit because plastic deformation raises dislocation density. The resulting residual stresses can reduce corrosion resistance, making option d the decrease.
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