Nitriding of a steel part does not increase its__________________?
Correct answer: A. Grain size
- A. Grain size
- B. Fatigue limit
- C. Surface hardness
- D. Wear resistance
Explanation
Nitriding introduces nitrogen into the surface and increases hardness, wear resistance and usually fatigue strength. It does not increase the grain size because the treatment is performed below the transformation temperature.
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