稀土钪对Al-10Mg合金性能的影响  

Effect of rare earth Sc on mechanical properties of Al-10Mg alloy

作　　者：黄鑫[1] 张晓燕[1] 高红选 樊磊[1] 巩向鹏 

机构地区：[1]贵州大学材料与冶金学院,贵阳550025

出　　处：《功能材料》2016年第7期7149-7152,共4页Journal of Functional Materials

基　　金：贵州省科技计划资助项目(GY字[2012]3043);贵州大学大学生创新训练资助项目(2014003)

摘　　要：通过微观分析及力学性能测试等方法,研究了添加稀土元素钪对Al-10Mg合金(ZL301合金)显微组织及力学性能的影响。结果表明,加入适量的钪元素后明显细化了Al-10Mg铸造合金的显微组织,主要是由于钪元素与Al形成颗粒状的稀土化合物Al_3Sc相,使合金中Al_3Mg_2相减少;经435℃×16h固溶处理后,Al_3Mg_2相基本溶解,稀土化合物Al_3Sc相热稳定性较高并未溶解,合金抗拉强度进一步得到提高。当钪元素的添加含量为0.4%时,Al-10Mg合金综合性能最为优良。Effects of scandium addition and solution treatment on microstructure and tensile properties of Al-10 Mg alloy（ZL301alloy）were investigated by microstructure analysis,mechanical properties testing.The results show that the right amount addition of scandium element to Al-10 Mg alloy result in grain refined because of new phase Al3Sc forms after the right amount addition of scandium in the Al-10 Mg alloys,The size and amount of Al3Mg2 phase are decreased.After solid solution treatment（435 ℃×16h）,the Al3Sc phase dissolves and the rare earth phase with heat stability remains leading to further improving of the mechanical properties of the alloys.When the content of Sc is 0.4%,the Al-10 Mg alloy has good comprehensive properties.

关 键 词：稀土Sc Al-10Mg合金 显微组织 力学性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]