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The physical and mechanical properties of HS6-5-2 steel after nitriding, carbonitriding, and carbonitriding with oxidation are studied with the help of a modern environmentally safe Zero-Flow method. The one-component atmosphere of ammonia (NH3) is used for the surface hardening. The temperature of the realized processes does not exceed 570°C. After various procedures of chemical and thermal treatment...
The hardening of 4X5MΦC die steel by a powerful fiber laser is considered. It is found that the hardness of the surface layer after laser treatment is 62–64 HRC and the depth of the hardened layer is 1 mm. Ultrafine structure such as a white layer is formed at the surface.
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