稀土变质及热处理对过共晶A1-0.6Mg-18Si合金力学性能的影响  

Effect of RE Modification and Heat treatment on Mechanical Properties of Hypereutectic Al-0.6Mg-18Si Alloy

作　　者：刘萍[1] 刘政[1] 胥锴[1] 

机构地区：[1]江西理工大学材料与化学工程学院,江西赣州341000

出　　处：《有色金属加工》2006年第3期7-10,共4页Nonferrous Metals Processing

摘　　要：通过实验研究了稀土变质及热处理对过共晶 Al-0.6Mg-18Si 合金显微组织及力学性能的影响。利用扫描电镜与光学显微镜观察了不同处理条件下合金的显微组织,并测试了合金的力学性能。结果表明,综合运用稀土变质处理和热处理是改善 Al-0.6Mg-18Si 合金组织形貌、提高其综合力学性能的有效途径。The effect of RE modification and heat treatment on the microstructure and mechanical properties of hypereutectic AI-0.6Mg-18Si alloy is studied. The microstructures of the alloy at different tempers are observed by SEM and optical microscope, and the mechanical properties tested. The results show that combination of rare earth modification and heat treatment is an effective way to improve the structural morphology of the hypereutectic Al-0.6Mg-18Si casting alloy and increase its mechanical properties.

关 键 词：铝镁硅合金 稀土变质处理 MG2SI 热处理 力学性能 

分 类 号：TG292[金属学及工艺—铸造]