Microstructural evolution of ultrafine-grained Al-Zn-Mg alloy during high speed and large plastic deformation at cryogenic temperature

作者：Lu J^*; Yin JG; He Y; Ding BF

来源：Rare Metal Materials and Engineering, 2005, 34(5): 742-745.

• multi-axis forging
• cryogenic temperature
• ultrafine-grained
• geometric dynamic recrystallization
• progressive rotation
• recrystallization
• 7075 Al alloy

Under constrained condition, severe plastic deformation at high speed can be carried out at extreme low temperature without annealing. Homogeneously Ultrafine-Grained (UFG) 7075 aluminum alloy (e.g. Al-Zn-Mg alloy) with size about 200 nm was fabricated. Evolution of microstructure was studied by transmission electron microcopy (TEM). Different deformations were observed. Factors such as low temperature and dynamic recrystallization contributing to microstructural evolution were discussed.

• 出版日期2005-5
• 单位西北有色金属研究院