Effects of Aging on the Evolution of Microstructure and Mechanical Properties of an Al – Li – Cu – Mg Alloy with Ag, Zr, Mn, and Zn Additives


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Abstract

The microstructure and the post-aging hardness of an Al – Li – Cu – Mg alloy is studied by the methods of transmission electron microscopy. Tensile tests are performed. The volume fraction and the size of the particles of the δ′, S and T1 phases are shown to be dependent on the aging temperature and time. The effect of the precipitates of the δ′, S and T1 phases on the hardening of the Al – Li – Cu – Mg alloy during aging is determined.

About the authors

Zhong-gang Sun

Shanghai Aircraft Manufacturing Co. Ltd

Author for correspondence.
Email: m15850535235@163.com
China, Shanghai

Peng-li Bao

Shanghai Aircraft Manufacturing Co. Ltd

Email: m15850535235@163.com
China, Shanghai

Chao Ma

Shanghai Aircraft Manufacturing Co. Ltd

Email: m15850535235@163.com
China, Shanghai

Jie Chen

Shanghai Aircraft Manufacturing Co. Ltd

Email: m15850535235@163.com
China, Shanghai

Xuan Guo

Shanghai Aircraft Manufacturing Co. Ltd

Email: m15850535235@163.com
China, Shanghai

Hua-guan Li

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics

Email: m15850535235@163.com
China, Nanjing

Juan Ling

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics

Email: m15850535235@163.com
China, Nanjing

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