Experimental study of strain hardening in cast austenitic 60Х24АГ16 steel

An improved method for the numerical determination of the deformation characteristics of low-ductility materials is presented. A specialized algorithm has been developed that, using the capabilities of the standard OriginPro software, enables accurate averaging of the experimental deformation diagram and represents it in an analytical form. The nonlinear phase of the experimental “stress-strain” relationship is expressed as a 9th-degree polynomial. This analytical representation of the deformation diagram allowed for a precise determination of the strain hardening coefficient dependencies, as well as an additional characteristic-the strain hardening rate of the material. Using this new method, the patterns of strain hardening in the cast 60Х24АГ16 alloy were analyzed. Special attention is given to the influence of preliminary deformation on the strain hardening characteristics.