Understanding the Influence of Ca and Zn on the Microstructure and Texture Evolution of Mg-(Ca, Zn) Alloys During Static Recrystallization

Magnesium suffers from anisotropyAnisotropy and strong basal textureTexture due to its hexagonal close-packed (HCP) structure. Additionally, twinningTwinning acts as the major deformation mode during mechanical loading. Alloying with Ca and Zn has shown to weaken texture and encourage slipping as a deformation mode. In this study, the microstructural and texture evolutionTexture evolution of Mg-(Zn, Ca) alloys during static recrystallizationRecrystallization were quantified using in-situ heating, EBSDElectron Backscatter Diffraction (EBSD), and electron microscopy. The objective is to understand the influence of Ca and Zn on the twin formation mediation and textureTexture weakening of Mg. SEM and EBSD were utilized to quantify recrystallization behavior and texture, and TEMTransmission Electron Microscopy (TEM) was used to understand the dislocationDislocation structure near and within various twin interfaces. It was determined that binary Mg–Zn retain twinning as a major deformation mode and strong basal texture after static recrystallizationRecrystallization while ternary Mg–Ca–Zn exhibit slipping and weaker texture after static recrystallization.