Abstract The effect of Al addition on microstructure and mechanical properties of hot extruded Mg–1Mn alloy sheet was investigated. The results revealed that the dynamic recrystallization was promoted by increasing Al content. The ultimate tensile strength and yield strength of the alloy increased with the increase of Al content. The Mg–9Al–1Mn alloy exhibited the highest strength, with tensile strength of 308 MPa, 307 MPa, 319 MPa, yield strength of 199 MPa, 207 MPa, 220 MPa and the elongation of 20.9%, 20.1%, 19.2% in 0°, 45°, 90°, respectively. The high strength was mainly attributed to the formation of fine dynamically recrystallized grains and large amounts of the second phase. The strengthening mechanism of the alloys was explained.

中文翻译：

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Al对挤压态Mg-1Mn合金薄板组织和力学性能的影响

摘要 研究了Al添加对热挤压Mg-1Mn合金薄板组织和力学性能的影响。结果表明，增加Al含量促进了动态再结晶。合金的极限抗拉强度和屈服强度随着Al含量的增加而增加。Mg-9Al-1Mn 合金表现出最高的强度，抗拉强度分别为 308 MPa、307 MPa、319 MPa，屈服强度为 199 MPa、207 MPa、220 MPa，伸长率为 20.9%、20.1%、19.2% in 0 °、45°、90° 分别。高强度主要归因于微细动态再结晶晶粒和大量第二相的形成。解释了合金的强化机制。