|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Deformation Induced Microstructural Modification
||Microstructure-Based Modeling of Impact-Induced Plastic Deformation
||Qi Tang, Mostafa Hassani
|On-Site Speaker (Planned)
Extreme plastic deformation occurs in a variety of impact-based material processes from surface mechanical attrition to cold spray. The strain levels in these processes are in principle large enough to lead to grain refinement by plasticity alone, while the addition of adiabatic heat opens the door to possible local recrystallization at the impact site. Due to the complexity of these processes predictive frameworks that can capture metal hardening up to very large strains are indispensable for process optimization. Here we present a microstructure-based constitutive model combined with finite element to predict impact-induced microstructural evolution. We apply the framework to surface mechanical attrition and cold spray impacts and discuss the evolution of dislocation density and grain refinement in these processes.