A Constitutive Model of Tensile Deformation of a Metastable Medium-Entropy Alloy

A physically based model is employed to trace the strain-hardening behavior of a metastable medium-entropy alloy (MEA) Fe-61(CoNi)(29)Cr-10 governed by a deformation-induced martensitic transformation. The approach is based on calculating the local quantities of the individual phases by means of constitutive modeling. An acceptable agreement between the experimental and the calculated stress-strain curves is verified. The model also demonstrates the variation of the phase composition of the MEA with strain due to the phase transformation.

Automated summary

A physically based model is used to study the strain-hardening behavior of a metastable medium-entropy alloy Fe-61(CoNi)(29)Cr-10, which is controlled by a deformation-induced martensitic transformation. The model accurately predicts the stress-strain curves and shows the variation of phase composition with strain due to the phase transformation.