Abstract
The martensitic transformation plasticity and martensitic transformation kinetics in 30Cr2Ni4MoV steel were studied under different tensile/compressive stress conditions using the Gleeble-3500 thermal simulation machine. Elastic strain, thermal strain and transformation strain were separated out from the total strain, and the transformation strain under different loads was finally obtained. The transformation plasticity coefficient K in the Greenwood-Johnson’s mechanism, the coefficients α and Ms in the Koistinen-Marburg equation and the applied stress were particularly studied. The results provide the necessary coefficients for the numerical simulation during quenching process of the 30Cr2Ni4MoV steel.
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