Transactions of Materials and Heat Treatment

Title：Research progress on thermomechanical treatment process for Al-Li alloy

Authors： Li Jianjun Xu Jiahui Huang Liang Xie Bingxin

Unit： Huazhong University of Science and Technology

KeyWords： Al-Li alloy thermomechanical treatment microstructure evolution strengthening and toughening mechanism multi-physics field

ClassificationCode：TG391

year,vol(issue):pagenumber：2021,46(11):1-10

Abstract：

The thermomechanical treatment (TMT) process is an important way to control the mechanical properties of Al-Li alloy. Therefore, the development history and characteristics of Al-Li alloy and TMT were introduced, and the classic stages of TMT for Al-Li alloy were reviewed, namely, solution quenching, pre-deformation and artificial aging stages. Then, the microstructure evolution of Al-Li alloy at different stages and their influences on the mechanical properties of material were described, including supersaturated solid solution evolution, dislocation evolution induced by plastic deformation, nucleation of precipitated phase promoted by dislocation, precipitated phase evolution model, material strengthening and toughening mechanism and mechanical model. Furthermore, the new development of TMT coupled with multi-physics field was introduced. But the related influence mechanism needed to be further studied, and the related precipitation phase evolution model and aging kinetic model needed to be further improved. Finally, in view of the existing research, the follow-up direction worthy of further research was proposed.

Funds：

国家自然科学基金面上项目（51975229）；武汉市应用基础前沿项目（2020010601012178）；湖北省重点研发计划项目（2020BAB139）

作者简介：李建军（1964-），男，博士，教授, E-mail：jianjun@hust.edu.cn; 通信作者：黄亮（1981-），男，博士，教授, E-mail：huangliang@hust.edu.cn

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