Zr对铸造Al-Si-Cu-Mg合金时效硬化行为的影响  

Effect of Zr on Aging Hardening Behavior of Cast Al-Si-Cu-Mg Alloy

作　　者：顾琪[1] 周鹏飞[1,2] 孙瑜 GU Qi;ZHOU Peng-fei;SUN Yu(School of Intelligent Manufacturing,Yancheng Polytechnic College,Yancheng 224005,Jiangsu,China;School of Material Science and Engineering,Yancheng Institute of Technology,Yancheng 224005,Jiangsu,China)

机构地区：[1]盐城工业职业技术学院智能制造学院,江苏盐城224005 [2]盐城工学院材料科学与工程学院,江苏盐城224005

出　　处：《铸造》2023年第8期1004-1009,共6页Foundry

基　　金：2022年度国家外国专家项目(G2022014146L);2022年度江苏省高校基础科学自然科学面上项目(22KJD430011);江苏省产学研合作项目(BY2022482,2021HX-67);校级自然科学基金项目(ygy2204)。

摘　　要：利用硬度测试、拉伸测试、DSC、TEM等手段研究了不同Zr含量对铸造Al-Si-Cu-Mg合金的强化相时效析出的影响。结果表明:Zr在不同时效期间的作用不同,前期推迟GP1区的形成,峰值时效期间促进富Cu相的析出,时效后期抑制富Cu相向平衡相转变;Zr的加入提高了合金的力学性能。The effect of aging on precipitation of strengthened phase in casting Al-Si-Cu-Mg alloys with different Zr content was studied by hardness test,tensile test,DSC and TEM.The results showed that Zr had different effects in different aging periods.The formation of GP1 zone was delayed in the early aging period,precipitated phase was promoted in the peak aging period,and the transition to equilibrium phase was inhibited in the over aging period.The addition of Zr could improve the mechanical properties of the alloy.

关 键 词：Al-Si-Cu-Mg 析出相 ZR 力学性能 

分 类 号：TG115.5[金属学及工艺—物理冶金] TG113.1[金属学及工艺—金属学]