Hot Deformation Behavior and Processing Maps of AA7085 Aluminum Alloy

被引：4
作者：
Yang Qunying [1 ]
Liu Wenyi [2 ]
Zhang Zhiqing [1 ]
Huang Guangjie [1 ]
Liu Xiaoyong [1 ]
机构：
[1] Chongqing Univ, Chongqing 400044, Peoples R China
[2] Shaanxi Univ Technol, Hanzhong 723003, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2018年 / 47卷 / 02期
基金：
对外科技合作项目（国际科技项目）; 中国国家自然科学基金;
关键词：
7085 aluminum alloy; flow behavior; processing maps; flow localization; optimum parameter; MICROSTRUCTURAL EVOLUTION; COMPRESSION; STRAIN; PRECIPITATION; TEMPERATURE; SIMULATION;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The flow behavior and processing maps of homogenized AA7085 aluminum alloy were investigated by isothermal hot compression tests in the temperature range of 300 similar to 450 degrees C with strain rates of 0.01 similar to 10 s(-1). Microstructure was characterized using Optical microscopy (OM), electron back-scattered diffraction (EBSD) and transmission electron microscopy (TEM). The results show that the superimposed processing maps at different strains exhibit the optimized deformation parameters with the temperature of 390 similar to 450 degrees C and strain rates lower than 0.1 s(-1). Microstructure characterization reveals that dynamic recovery and recrystallization are the main deformation mechanisms in the safe regions. At lower temperature and lower strain rate, the coarsening of particles between epsilon=0.5 and epsilon=0.7 may be responsible for the transformation of processing map from unstability to safe domain.
引用
收藏
页码：409 / 415
页数：7
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