A short note on approximating the critical strain for the onset of dynamic recrystallization

Abstract

This note provides a MATLAB code to determine the critical strain associated with the onset of dynamic recrystallization. The code takes a closed-form constitutive model and derives the critical strain by solving $\partial^2 \theta / \partial \sigma^2 = 0$. Moreover, several models that could be used for this purpose are studied.