文献类型：期刊文章

作　　者：陈刚[1,2] 彭晓东[2,3] 范培耕[1] 谢卫东[2,3] 魏群义[2] 马宏[2] 杨艳[2]

机构地区：[1]重庆科技学院冶金与材料工程学院,重庆401331 [2]重庆大学材料科学与工程学院,重庆400044 [3]国家镁合金材料工程技术研究中心,重庆400044

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Project(2007CB613702)supported by the National Basic Research Program of China;Project(2006AA4012)supported by the Research Program Foundation of CQ CSTC, China;Project(2008BB4323)supported by the Natural Science Foundation of CQ CSTC, China

年　　份：2011

卷　　号：21

期　　号：4

起止页码：725-731

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2011_2012、EBSCO、EI、IC、INSPEC、JST、SCI(收录号：WOS:000290515800004)、SCI-EXPANDED(收录号：WOS:000290515800004)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：The effects of Sr and Y with different contents on the microstructure and corrosion resistance of AZ31 alloy were investigated. The results indicate that the addition of Sr can obviously reduce the grain size of AZ31 alloy and transform β-Mg 17 Al 12 phase from continuous network to scattered form. Simultaneously, Al 4 Sr phase distributed along the boundaries of grains is formed in AZ31-Sr magnesium alloys. The addition of Sr is not as effective as the simultaneous addition of Sr＋Y for the refinement of grains, and Al 2 Y and Al 3 Y phases are distributed both in intracrystalline and along grain boundaries. The corrosion resistance is improved slightly in AZ31 alloy with simultaneous addition of 0.5%Sr＋Y. Due to its smallest corrosion current density and corrosion rate, the corrosion resistance of AZ31-0.5%Sr-1.5%Y magnesium alloy is proved the best.

关 键 词：AZ31 magnesium alloy  STRONTIUM YTTRIUM corrosion resistance  

分 类 号：TG146.22[材料类]