Superplasticity of 6016 aluminum alloy at elevated temperatures
来源期刊：Rare Metals2015年第6期
论文作者：Ji-Xiang Zhang Jin-Xin Fan Yun-Teng Liu Wei Feng
文章页码：387 - 394
摘 要：The high-temperature plastic deformation behaviors of 6016 aluminum alloy were investigated with the temperatures ranging from 420 to 540 °C and the strain rates ranging from 0.001 to 1.000 s-1. The results show that 6016 aluminum alloys possess superplasticity at500 °C with the strain rates ranging from 0.001 to0.010 s-1. The grain boundary sliding（GBS） is the main mechanism of superplastic deformation of 6016 aluminum alloy. In addition, a great number of O-type cavities, almost no V type, occur in the microstructure of superplastic deformed 6016 aluminum alloy. The dislocations gather near the grain boundaries to coordinate GBS deformation.The second-phase particles effectively prevent the growth of the recrystallized grains or plastic deformation grains and pin the moving dislocations during deformation.
Ji-Xiang Zhang1，Jin-Xin Fan1，Yun-Teng Liu2，Wei Feng1
1. College of Mechatronics and Automobile Engineering, Chongqing Jiaotong University2. New Material Institute, Shandong Academy of Sciences
摘 要：The high-temperature plastic deformation behaviors of 6016 aluminum alloy were investigated with the temperatures ranging from 420 to 540 °C and the strain rates ranging from 0.001 to 1.000 s-1. The results show that 6016 aluminum alloys possess superplasticity at500 °C with the strain rates ranging from 0.001 to0.010 s-1. The grain boundary sliding（GBS） is the main mechanism of superplastic deformation of 6016 aluminum alloy. In addition, a great number of O-type cavities, almost no V type, occur in the microstructure of superplastic deformed 6016 aluminum alloy. The dislocations gather near the grain boundaries to coordinate GBS deformation.The second-phase particles effectively prevent the growth of the recrystallized grains or plastic deformation grains and pin the moving dislocations during deformation.
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