Gd对AZ81镁合金β相组织及性能的影响  

Effect of Gd on the β phase microstructure and mechanical properties of AZ81 Mg alloy

作　　者：王瑞权[1] 邱葭菲[1] 陈云祥[1] 周巧军[1] 金济民[1] 

机构地区：[1]浙江机电职业技术学院,浙江杭州310053

出　　处：《轻合金加工技术》2017年第3期19-21,50,共4页Light Alloy Fabrication Technology

基　　金：浙江省教育厅科研资助项目(Y201431857);浙江省自然科学基金(LY15E050001)

摘　　要：试验研究w(Gd)分别为0%,0.1%,0.3%,0.5%,1.0%对AZ81镁合金微观组织及性能的影响,采取金相显微镜、X射线衍射、硬度试验机及电化学工作站等设备进行了检测分析。结果表明,随着Gd加入量的增加,β-Mg_(17)Al_(12)相网状分布断开,尺寸逐渐减小,数量也逐渐减少,合金的硬度也逐渐增加,耐蚀性能提高。Microstructure and mechanical properties of AZ81 Mg alloy have been studied with different contents of Gd（wtGd% =0% ,0. 1% ,0.3% ,0.5%, 1.0% ） ,tested and analyzed with optical microscopy, x-ray diffraction analysis, hardness tester and electrochemical workstation. The results show that with the increase of Gd addition, β-Mg17Al12 phase distribution network is disconnected, the size and number decrease, and the hardness and eorrosion resistance increase.

关 键 词：AZ81镁合金 GD 晶粒细化 组织 

分 类 号：TG146.22[一般工业技术—材料科学与工程]