复合添加Zr及稀土Sc、La对铝镁合金组织和力学性能的影响

Effect of Rare Earth Element La Solid Solution Treatment on Microstructure and Mechanical Properties of Al-10Mg Alloy

通过金相显微镜观察、拉伸力学性能测试、扫描电镜(SEM)观察、能谱分析(EDS)和XRD物相分析等手段研究了添加Zr及稀土Sc、La及固溶处理对Al-10Mg合金显微组织及力学性能的影响。结果表明:当Zr和稀土Sc的复合含量均为0.25%时,Al-10Mg合金综合性能最为优良;复合加入0.25%的Zr、稀土La,与单独加入0.25%稀土Sc后的Al-10Mg合金力学性能相似。

The effects of La addition and solid solution treatment on the microstructure and mechanical properties of Al-10Mg alloy were studied by optical microscopy, tensile test, SEM, EDS and XRD phase analysis using the method of parallel experiments. The results indicate that when the content of Zr and Sc are 0.25%, the alloy has good comprehensive properties.When the content of Zr and La is 0.25%, the mechanical properties of the alloy is similar when the content of Sc is 0.25% .