摘要
用金相显微镜观察了未处理和深冷处理的6061铝合金的组织形貌,用洛氏硬度机、万能拉伸试验机、研磨抛光机和电子天平分别测试了深冷处理后合金的硬度、抗拉强度及耐磨性。结果表明,深冷处理能显著提高合金的伸长率,但合金的耐磨性下降。在-190℃深冷处理12h后,6061铝合金的力学性能最好。
The microstructure of 6061 aluminum alloy without and with cryogenic treatment was observed by using optical microscopy. The hardness, tensile strength and wear resistance were tested by Rockwell hardness tester, universal tensile testing machine, polishing machine and electronic balance. The results show that, cryogenic treatment can significantly increase alloy elongation, but the wear resistance of the alloy decreases. The mechanical properties of 6061 aluminum alloy are the best after cryogenic treatment at -190 ℃ for 12 h.
作者
倪红军
顾涛
吕毅
汪兴兴
吕帅帅
朱昱
NI Hongjun;GU Tao;LYU Yi;WANG Xingxing;LYU Shuaishuai;ZHU Yu(College of Mechanical Engineering, Nantong University, Nantong 226019, China)
出处
《热加工工艺》
CSCD
北大核心
2018年第6期239-241,共3页
Hot Working Technology
基金
江苏高校优势学科建设工程资助项目(苏政办发[2014]37号)
江苏省产学研合作前瞻性联合研究项目(BY2015047-02)
关键词
6061铝合金
深冷处理
耐磨性
硬度
组织
6061 aluminum alloy
cryogenic treatment
wear resistance
hardness
microstructure
