Effects of Deformation Models on the Tensile Properties and Texture of Rolled ZK60 Magnesium Alloy after Different Annealing Times

Annealing effectively modulates texture and enhances tensile properties, but the quantitative correlation between texture evolution and plastic deformation mechanisms under varying annealing times remains unclear. This study employs the visco‐plastic self‐consistent model (VPSC) and electron backscatter diffraction (EBSD) to investigate the tensile properties and texture evolution of rolled ZK60 magnesium alloy after annealing at 400°C for 2, 5, and 8 h. Relationships between the deformation mechanism, stress–strain, texture evolutions, and microstructure were analyzed. VPSC hardening parameters were adjusted based on Schmid factors from EBSD data, establishing a crystal plasticity model incorporating slip‐twin coupling. The results indicated that after annealing for 2 h, pole density decreases from 16.94 to 15.55, with a yield strength of 146.96 MPa. Early plastic deformation was dominated by basal <a> slip (relative activation >50%), assisted by prismatic <a> slip. Basal <a> slip exerts a significant influence on the yield strength and ultimate tensile strength. When prismatic <a> slip was suppressed, the activation of basal <a> slip decreases with prolonged annealing time, while that of pyramidal <a> slip increases. The VPSC model quantitatively reveals the correlation among texture, slip systems, and tensile properties, providing theoretical guidance for optimizing annealing and improving magnesium alloy properties.