稀土元素钇和固溶处理对Al-8Mg合金组织和力学性能的影响  

Effect of Rare Earth Y and Solid Solution Treatment on Microstructure and Mechanical Properties of Al-8Mg Alloy

作　　者：谌红果 卫广智[1] 马琳[1] 钱虎[1] 罗伟[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《热加工工艺》2016年第4期76-78,共3页Hot Working Technology

摘　　要：采用对比试验方法,通过拉伸力学性能测试、金相显微镜、扫描电镜(SEM)和能谱分析(EDS)等手段研究了添加稀土元素钇及固溶处理对Al-8Mg合金显微组织及力学性能的影响。结果发现,添加稀土钇后Al-8Mg合金枝晶尺寸明显减小,且晶粒得到细化。当钇添加量为0.4%时,固溶态Al-8Mg合金组织具有良好的综合性能。The effects of Y addition and solid solution treatment on the microstructure and mechanical properties of Al-8Mg alloy were studied by tensile test, optical microscopy, SEM and EDS by employing the method of parallel experiments. The results show that the addition of Rare Earth Y can remarkably decrease the size of the dendritic crystal, thus the grain of Al-8Mg alloy refines, when the content of Y is 0.4%, the solid solution Al-8Mg alloy has good comprehensive properties.

关 键 词：钇 Al-8Mg合金 微观组织 力学性能 

分 类 号：TG113.23[金属学及工艺—物理冶金]