Plastic deformation behavior of spray formed high-strength Al-Zn-Mg-Cu alloy at high strain rate

被引：0
|
作者：
Yang Y.-T. [1 ]
Luo R. [1 ]
Cheng X.-N. [1 ]
Chen L.-L. [1 ]
Gui X. [1 ]
Wang W. [1 ]
Zhang Z. [2 ]
Gao S.-Y. [2 ]
机构：
[1] School of Materials Science and Engineering, Jiangsu University, Zhenjiang
[2] Jiangsu Haoran Spray Forming Alloy Co., Ltd., Zhenjiang
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2019年 / 29卷 / 12期
关键词：
Al-Zn-Mg-Cu alloy; High strain rate; Hot deformation; Spray forming;
D O I：
10.19476/j.ysxb.1004.0609.2019.12.02
中图分类号：
学科分类号：
摘要：
The thermal compression test of extruded spray formed Al-Zn-Mg-Cu high strength aluminum alloy at high strain rate was performed on Gleeble-3500 thermo-mechanical simulator. The high temperature plastic deformation behavior of the material at deformation temperature of 350-450 ℃ and high strain rate of 1-20 s-1 was systematically studied. Considering the influence of adiabatic heating, the flow stress curve of material was corrected by extrapolation, and the material constitutive model was constructed. The processing maps were constructed based on the dynamic material model, and the microstructure characteristics in different deformation conditions were determined. The results show that the flow stress curves of the alloy exhibit typical dynamic recovery characteristics. With the increase of strain rate, the adiabatic temperature rise becomes more obvious. The processing maps and the microstructure characteristics of different deformation regions show that there are three hazardous processing zones at (350-420 ℃, 1-3 s-1), (350-390 ℃, 7-20 s-1) and (425-450 ℃, 2-20 s-1) which should be avoided to prevent the occurrence of instability and cracking in the hazardous area. There are two safe processing zones, (350-370 ℃, 4-7 s-1) and (395-425 ℃, 14-20 s-1) which should be selected for hot working. © 2019, Science Press. All right reserved.
引用
收藏
页码：2700 / 2708
页数：8
相关论文
共 17 条
  • [1] Li X.-J., Yang J., Zhang H., Zhang J., Zhang D., Microstructure and mechanical properties of 7055 Al alloys by spray forming, The Chinese Journal of Nonferrous Metals, 17, 12, pp. 1987-1992, (2007)
  • [2] Xia H., Microstructure evolution and mechanical properties of industrial level 7055 aluminum alloy extrusion by spray forming, pp. 27-34, (2013)
  • [3] Lu Z.-P., Study on microstructures and properties of spray formed ultra high strength aluminum alloys joint by friction stir welding, pp. 27-68, (2015)
  • [4] Chen G., Study on thermal deformation characteristics and application of the Al-12Zn-2.4Mg-1.2Cu ultra high strength aluminum alloy, pp. 93-119, (2016)
  • [5] Son K.T., Kim M.H., Kim S.W., Lee J.W., Hyun S.K., Evaluation of hot deformation characteristics in modified AA5052 using processing map and activation energy map under deformation heating, Journal of Alloys & Compounds, 740, pp. 96-108, (2018)
  • [6] Li P.-W., Li H.-Z., Huang L., Liang X.-P., Zhu Z.-X., Characterization of hot deformation behavior of AA2014 forging aluminum alloy using processing map, Transactions of Nonferrous Metals Society of China, 27, 8, pp. 1677-1688, (2017)
  • [7] Luo R., Cheng X.-N., Zheng Q., Zhu J.-J., Wang J., Liu T., Chen G., Yang Q., Dynamic recrystallization behavior of an alumina-forming austenitic alloy Fe-20Cr-30Ni-0.6Nb-2Al-Mo, Materials Review, 31, 18, pp. 136-140, (2017)
  • [8] Zhuo X.-X., Xu G.-F., Yuan Y., Luo R., Cheng X.-N., Hot deformation behavior and processing map of 0Cr17Mn17Mo3NiN austenitic stainless steel, Journal of Mechanical Engineering, 53, 22, pp. 74-80, (2017)
  • [9] Peng J., Wang Y.-J., Zhong L.-P., Peng L.-F., Pan F.-S., Hot deformation behavior of homogenized Al-3.2Mg-0.4Er aluminum alloy, Transactions of Nonferrous Metals Society of China, 26, 4, pp. 945-955, (2016)
  • [10] Hadadzadeh A., Wells M.A., Analysis of the hot deformation of ZK60 magnesium alloy, Journal of Magnesium and Alloys, 5, 4, pp. 369-387, (2017)
12