Abstract
To understand the high strain hardening capability of austenitic steels, dislocation density-based constitutive modelling has been actively employed. Despite the variation in their formulation, all models explain flow stress in terms of the density of dislocations, which are generated and annihilated simultaneously throughout the deformation. Taylor coefficient, shear modulus, twin fraction, and annihilation coefficients, which are key model parameters, are discussed in detail. The model is expected to be applied not only to austenite containing multiphase steels but also to design face-centred cubic-based alloys.
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