Sb含量对Mg-8Al-1Zn-1Si合金组织与性能的影响  

Effects of Sb Content on Microstructure and Properties of Mg-8Al-1Zn-1Si Alloy

作　　者：张树清[1] 宋佩维[1] 王同乐[1] 王永善[1] 

机构地区：[1]陕西理工学院材料工程与科学学院,陕西汉中723003

出　　处：《铸造技术》2013年第1期36-39,共4页Foundry Technology

基　　金：陕西省自然科学基金项目(2010JM6009);陕西省教育厅科研计划项目(2010JK470)

摘　　要：研究了合金元素Sb对Mg-8Al-1Zn-1Si合金组织和性能的影响。结果表明：加入少量（0．2％-0．6％）Sb时．a—Mg基体和粗大的汉字状Mg2Si相颗粒有所细化，力学性能逐渐提高；当Sb达到0．8％时，MgzSi颗粒全部转变为块状和短棒状，此时室温和150℃下的力学性能都达到最佳；当Sb含量超过0．8％后，合金中的Mg2Si义变为粗大的汉字状，力学性能下降。The effect of Sb modification on the microstructure and properties of Mg-8Al-1Zn- 1 Si alloy were investigated. The results show that a-Mg matrix and Chinese script shaped Mg2Si phases are refined in some extent by adding 0.2%-0.6% Sb elements to Mg-8Al-1Zn-ISi alloy, and the mechanical properties are improved gradually. When the content of Sb is 0.8%, all of Mg2Si phases change into block and short rod shapes, the room temperature and elevated temperature mechanical properties of the alloy reach the maximum. Above the content of 0.8% Sb, the Mg2Si phases change into large Chinese script shaped again, and the mechanical properties reduce.

关 键 词：Mg-8Al—1Zn-1Si合金 SB MG2SI 显微组织 力学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程]