Effect of original structure on the depth and hardness of the nitrided case
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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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