Abstract

1. Raising the nitriding temperature of steel 65G16Yu2F from 700 to 750°C lowers the hardness of the surface approximately by HV 100-200 but at the same time the state of the surface of the specimens improves noticeably. After nitriding in ammonia, no surface flaws were visually detected in steel with grain not coarser than No. 5. 2. After nitriding in a mixture of ammonia and nitrogen, wear resistance and fatigue limit of steel 65G16Yu2F are better than after treatment in pure ammonia. 3. The mean magnetic permeability of steel 65G16Yu2F is increased by approximately 4% through nitriding at 750°C, and it then amounts to 1.3·10−6 T·m/A.

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