Effect of calcium addition on microstructure andtexture modification of Mg rolled sheets
(1. School of Materials Science and Engineering, Anhui University of Technology, Anhui 243002, China;
2. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University,
Shanghai 200030, China;
3. Department of Mechanical Engineering, Nagaoka University of Technology, Niigata 940-2188, Japan)
2. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University,
Shanghai 200030, China;
3. Department of Mechanical Engineering, Nagaoka University of Technology, Niigata 940-2188, Japan)
Abstract: The mechanical properties and texture of AM60 (Mg-6.0Al-0.3Mn, mass fraction %) and ZXM200 (Mg-1.6Zn-0.5Ca- 0.2Mn) Mg alloys subjected to multi-pass hot rolling were investigated. The finer recrystallized grains usually exhibit particular preferred orientations and then alter the total texture feature of rolled sheets. Ca solid solution into Mg matrix serves to the formation of texture component with c-axis rotated away from normal direction towards transverse direction and then weakens the overall texture intensity, resulting in a similar anisotropic characteristic to RE-containing Mg alloys.
Key words: Mg sheets; hot rolling; dynamic recrystallization; Ca addition; texture weakening