Effect of original structure on the depth and hardness of the nitrided case
With increasing tempering temperatures the case depth and hardness decrease on steels 38KhMYuA and 40Kh.
The use of preliminary decarburizing before nitriding in a mixed atmosphere (70% N2+30% NH3) results in high hardness and case depth without an increase of brittleness in steel 38KhMYuA.
Nitriding with over 60% dissociation lowers the hardness and case depth.
KeywordsAtmosphere Brittleness Nitrided High Hardness Original Structure
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