Quick Search:       Advanced Search
叶杰,林小娉,董允,滕飞,孙桂芳,韩杰.复合添加Cr、Bi元素的ZA84镁合金时效硬化及微观组织研究[J].稀有金属材料与工程(英文),2018,47(1):39~42.[Jie Ye,Xiao-ping Lin,Yun Dong,Fei Teng,Gui-fang Sun,jie Han.Age hardening and microstructure of ZA84 magnesium alloy with the combined addition of Cr and Bi[J].Rare Metal Materials and Engineering,2018,47(1):39~42.]
Age hardening and microstructure of ZA84 magnesium alloy with the combined addition of Cr and Bi
Download Pdf  View/Add Comment  Download reader
Received:July 22, 2016  Revised:March 17, 2017
DOI:
Key words: ZA84-0.2Cr-0.5Bi alloy  Crystal defect  Age hardening  Strengthening phase
Foundation item:国家自然科学基金项目(51675092)、河北省自然科学基金项目(E2014501123)
Author NameAffiliationE-mail
Jie Ye School of Materials Science and Engineering,Northeastern University yejie9966@163.com 
Xiao-ping Lin School of Materials Science and Engineering,Northeastern University lxping3588@163.com 
Yun Dong School of Materials Science and Engineering,Northeastern University  
Fei Teng School of Materials Science and Engineering,Northeastern University  
Gui-fang Sun School of Materials Science and Engineering,Northeastern University  
jie Han School of Materials Science and Engineering,Northeastern University  
Hits: 154
Download times: 
Abstract:
      The age hardening and microstructure of ZA84 magnesium alloy with the combined addition of Cr and Bi was studied by SEM and HRTEM. The results show a trace amount of Cr and Bi has a significant enhancement effect on the hardness of aging. When the ZA84-0.2Cr-0.5Bi alloy aged at 160℃, during the early aging period, the matrix has serious lattice distortion and a large number of crystal defects. The microstructure at the peak aging consists of a large number of rod-like or blocky β1’-MgZn2 phases and granular Bi2Mg3 phases, and the peak hardness value is 92.48HV. When ageing proceeded, the precipitate coarsening resulted in the hardness value reduction.