1. Queen''s University, Department of Mechanical and Materials Engineering, Kingston, Ontario, Canada K7L 3N6;2. Canadian Nuclear Laboratories, Chalk River, Ontario, Canada, K0J 1J0;1. Department of Mechanics, School of Civil Engineering, Central South University, Changsha, 410075, China;2. College of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China
Abstract:
Recovery of mechanical properties during annealing of deformed metals has been modelled based on a microstructural representation comprising two elements, (i) the cell/subgrain structure (size δ) and (ii) the dislocation density (ρ) within the subgrains. These two microstructural elements are treated as independent internal state variables and the recovery of flow stress obtained by adding the time dependent contributions due to subgrain growth [σ ∝ 1/δ(t)] and dislocation network growth
