Surface hardening by strain induced martensitic transformation

摘要: The hardness and fatigue strength achieved by strain hardening are normally noticeable lower than those attained thermal or thermochemical heat treatments. Strain deformation induced martensitic transformation of residual austenite can increase the mechanical surface processes considerably. In this paper, an approach is presented where workpieces with a high content metastable used for layer. microstructure has to be sufficiently stable, in order ensure that material machined without being changed austenite. After machining, Hertzian contact stresses introduced deep rolling, so takes place. At same time rolling produces finish part. By method, treatment process within production line realized. A conceivable use method could bearings guideways.