Influence of simultaneous alloying with Ca and Sc on the high temperature deformation mechanism, texture, and recrystallization behavior of Mg-Ca-Sc alloys

• Published in: Materials characterization Vol. 179; p. 111343
• Main Authors: Singh, Chetan, Narayan, R. Lakshmi, Jain, Jayant
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.09.2021
• Subjects: Calcium; Dynamic recrystallization; Hot rolling; Magnesium; Rare-earth elements; Texture; Magnesium; Calcium; Dynamic recrystallization; Rare-earth elements; Hot rolling; Texture
• ISSN: 1044-5803; 1873-4189
• DOI: 10.1016/j.matchar.2021.111343

The effect of simultaneous addition of non-rare-earth (Ca) and rare-earth (Sc) elements on the hot rolled deformation behavior, recrystallization and texture evolution of Mg alloys is evaluated. For this purpose, the microstructures of as rolled and recrystallized ternary alloys, Mg-0.6Ca-0.5Sc and Mg-0.6Ca-1.0Sc were compared with those of binary Mg-0.6Ca and Mg-1.0Sc alloys. Results show that for all the alloys studied, 101¯1-101¯2 double twins were the dominant deformation mechanism and 101¯2 extension twinning was suppressed in the presence of Sc in binary as well as ternary systems. Although the grain refinement prowess of Ca and Sc were enhanced on simultaneous addition, their texture weakening capability deteriorated significantly. •The simultaneous addition of Ca and Sc results in increased solid solubility of both Ca and Sc.•The grain refinement prowess of Ca and Sc are enhanced on simultaneous addition.•Ca hampers the texture weakening potential of Sc.•Mg-0.6Ca-0.5Sc shows the best combination of fine equiaxed grains and strong basal texture.