A strong and ductile Mg-8Al-1Zn-1Ca-0.3Mn (wt%) alloy sheet has been successfully developed via commercial rolling process. The ultimate tensile strength, 0.2% proof stress, and elongation to failure along the rolling direction of the sheet are 371 MPa, 275 MPa, and 17.1%, respectively. The high strength and ductility are attributed to the fine recrystallized grains and densely dispersed fine Mg₁₇Al₁₂ precipitates. Further, due to its isotropic basal texture, the Mg-8Al-1Zn-1Ca-0.3Mn alloy sheet shows little in-plane anisotropy. The ultimate tensile strength, 0.2% proof stress, and elongation to failure along the 45° and transverse direction of the sheet are almost the same as those in the rolling direction. The good tensile properties can be realized by using only inexpensive ingredients and commercial rolling process; therefore, the Mg-8Al-1Zn-1Ca-0.3Mn alloy sheet will be a candidate as structural materials for transportation vehicles.

通过商业化的轧制工艺成功地开发了一种坚固而易延展的Mg-8Al-1Zn-1Ca-0.3Mn（wt％）合金薄板。沿片材的轧制方向的极限拉伸强度，0.2％屈服强度和破坏伸长率分别为371MPa，275MPa和17.1％。高强度和延展性归因于细小的重结晶晶粒和致密分散的细Mg ₁₇ Al ₁₂沉淀。此外，由于Mg-8Al-1Zn-1Ca-0.3Mn合金薄板具有各向同性的基础组织，因此其面内各向异性很小。沿板的45°和横向的极限抗拉强度，0.2％屈服强度和断裂伸长率与沿轧制方向的极限拉伸强度，0.2％屈服强度和破坏伸长率几乎相同。仅使用便宜的成分和商业轧制工艺就可以实现良好的拉伸性能。因此，Mg-8Al-1Zn-1Ca-0.3Mn合金薄板将成为运输车辆的结构材料。