Abstract
An austenitic stainless steel containing 17% Cr and 12% Ni and a ferritic stainless steel containing 28% Cr and 3% Ni were implanted with nitrogen at 60 and 100 keV and implantation doses of 1 × 10 17, 4 × 10 17 and 1 × 10 18N + cm −2. The nature of microstructural transformations was investigated, and two hardening mechanisms were identified: solid solution hardening in austenite and precipitation hardening in ferrite. The wear behaviour of the samples nitrided at 100 keV and 4 × 10 17N + cm −2 under cyclic sliding motion was explained in correlation with their surface microstructure.
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