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Abstract
In present work, the high strength-ductility balance of Mg-1.03Ca-0.47Mn Mg alloy sheet was successfully fabricated by rolling and annealing. After rolling, though the yield strength (YS) and ultimate tensile strength (UTS) of sheet were improved to 235 MPa and 253 MPa, the appearance of deformation-induced grain subdivision mechanism, shear bands and {10–12} extension twins also introduced strong (0001) basal texture with basal pole inclining to rolling direction which led the elongation (EL) decreased to 3.8%. As-annealed sheet occurred static recrystallization which led to the formation of finer grain structure than as-rolled sheet, and the strong (0001) basal texture of as-rolled sheet was transformed into weak (0001) peak texture with basal pole spreading widely along TD. Therefore, as-annealed sheet exhibits high strength-ductility balance with the YS of 235 MPa, UTS of 297 MPa and EL of 16.4%.
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