Formation of Martensite

摘要: This chapter deals with martensite, which is a diffusionless, shear transformation, that highly crystallographic in character because it generated by specific deformation of the austenite. When formation martensite constrained its surroundings, forms as thin plates or laths order to minimize strain energy due deformation. The reaction steels normally occurs athermally. Martensite can form at very low temperatures, where diffusion, even interstitial atoms, not conceivable over time period experiment. habit refers interface plane between austenite and measured on macroscopic scale. involves coordinated movement atoms. supersaturated solid solution carbon ferritic iron. Martensitic transformation diffusionless so change crystal structure achieved homogeneous Stabilization means reduction amount result processes, interfere nucleation, growth plates. shape accompanying martensitic be reversed transforming back parent phase.