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

Zhong-gang Sun; Peng-li Bao; Chao Ma; Jie Chen; Xuan Guo; Hua-guan Li; Juan Ling

doi:10.1007/s11041-016-9941-7

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

Authors: Sun Z.¹, Bao P.¹, Ma C.¹, Chen J.¹, Guo X.¹, Li H.², Ling J.²
Affiliations:
1. Shanghai Aircraft Manufacturing Co. Ltd
2. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics
Issue: Vol 57, No 11-12 (2016)
Pages: 673-677
Section: Article
URL: https://journals.rcsi.science/0026-0673/article/view/235253
DOI: https://doi.org/10.1007/s11041-016-9941-7
ID: 235253

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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.