文献类型：期刊文章

作　　者：余晖[1,2] 于化顺[1] Young-min KIM[2] Bong-sun YOU[2] 闵光辉[1]

机构地区：[1]山东大学材料科学与工程学院,材料液固结构演变与加工教育部重点实验室 [2]Light Metals Group,Korea Institute of Mate rials Science,Changwon 642831,Korea

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

基　　金：supported by the R&D Program of Korea Institute of Materials Science;the World Premier Materials Program funded by The Ministry of Knowledge Economy,Korea;support from China Scholarship Council(CSC)

年　　份：2013

卷　　号：23

期　　号：3

起止页码：756-764

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2013_2014、EBSCO、EI、IC、INSPEC、JST、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：The deformation behaviors of a new quaternary Mg-6Zn-1.5Cu-0.5Zr alloy at temperatures of 523-673 K and strain rates of 0.001-1 s-1 were studied by compressive tests using a Gleeble 3800 thermal-simulator.The results show that the flow stress increases as the deformation temperature decreases or as the strain rate increases.A strain-dependent constitutive equation and a feed-forward back-propagation artificial neural network were used to predict flow stress,which showed good agreement with experimental data.The processing map suggests that the domains of 643-673 K and 0.001-0.01 s-1 are corresponded to optimum conditions for hot working of the T4-treated Mg-6Zn-1.5Cu-0.5Zr alloy.

关 键 词：Mg alloy  Cu addition  flow stress  deformation behavior  constitutive equation  artificial neural network  processing map  

分 类 号：TG146.22[材料类]