A new macroscopic strain hardening function based on microscale crystal plasticity and its application in polycrystal modeling

A new phenomenological strain hardening function is proposed to describe the behavior of metallic materials. The based on a simplification an earlier established self and latent crystal plasticity approach. contains only four parameters, which can be readily obtained using efficient numerical technique by fitting experimental curve. Several applications different materials are presented good agreements with counterparts were obtained. One great advantage empirical that its parameters directly used in polycrystal viscoplastic modeling (VPSC approach) for plasticity-based incremental simulations. For conversion between macroscopic scale grain-level, Taylor factor was used, re-defined polycrystals present work. VPSC simulations also led reproduction all investigated cases, rapid convergence.