History and temperature dependent cyclic crystal plasticity model with material-invariant parameters

• DOI: 10.1016/j.ijplas.2022.103494
• Publication Date: 2022-12-05T17:13:11Z
• Authors: Farhan Ashraf; Gustavo M. Castel...
• Keywords: Substructure; Hardening (computing); Strain hardening exponent

Cyclic deformation of metallic materials depends on the interaction multiple mechanisms across different length scales. Solid solution atoms, vacancies, grain boundaries, and forest dislocations interfere with dislocation glide increase macroscopic strength. In single phase under cyclic loading, localization densities in sessile substructures explains a significant fraction strain hardening. Upon cycling, these structures evolve stable configurations, which depend accumulation. This work advances substructure-sensitive crystal plasticity models capable quantifying hardening history at various temperatures for FCC materials. The framework predicts evolution substructure based activation cross slip Al, Cu, Ni single- poly-crystals up to 0.5 homologous temperature. temperature induces transformation structures, secondary without any additional provision. Moreover, approach relies material-invariant mesoscale parameters that are specific rather than material system. Hence, we demonstrate predictive power can be augmented by parameterizing model experimental data from common substructures. As result, shares parameter information need calibration.