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刘冉,黄晖,马俊,文胜平,高坤元,吴晓蓝,聂祚仁.Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er合金低温力学性能与微观组织研究[J].稀有金属材料与工程(英文),2018,47(1):162~168.[Ran Liu,Hui Huang,Jun Ma,Shengping Wen,Kunyuan Gao,Xiaolan Wu,Zuoren Nie.Mechanical properties at low temperature and microstructure of Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er alloy[J].Rare Metal Materials and Engineering,2018,47(1):162~168.]
Mechanical properties at low temperature and microstructure of Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er alloy
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Received:November 25, 2015  Revised:February 13, 2016
Key words: 5xxx aluminum alloy  Tensile strength  Impact properties  Fracture scanning
Foundation item:973项目(2012CB619503),中国博士后科学基金(2014M560865),北京市博士后基金(2015zz-34)
Author NameAffiliationE-mail
Ran Liu Beijing University of Technology liuran_njust@163.com 
Hui Huang Beijing University of Technology huanghui@bjut.edu.cn 
Jun Ma Beijing University of Technology  
Shengping Wen Beijing University of Technology  
Kunyuan Gao Beijing University of Technology  
Xiaolan Wu Beijing University of Technology  
Zuoren Nie Beijing University of Technology  
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      The tensile strength and impact properties at low temperature were investigated on Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er alloy for cold rolled, warm rolled and fully annealed samples. The original microstructures, tensile fracture and impact fracture were observed using electron back-scattered diffraction(EBSD), transmission electron microscope(TEM) and scanning electron microscope(SEM) in order to analyze the effects of microstructure on tensile property and impact properties. The results showed that, with the decreasing of testing temperature, the stresses are drastically increased as well as the impact properties. The tensile strength and impact property of warm rolled alloy with more sub-boundaries has a higher strength and impact property which realized the matching of high strength and toughness.