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

被引：0
作者：
Zhong-gang Sun
Peng-li Bao
Chao Ma
Jie Chen
Xuan Guo
Hua-guan Li
Juan Ling
机构：
[1] Shanghai Aircraft Manufacturing Co. Ltd,College of Materials Science and Technology
[2] Nanjing University of Aeronautics and Astronautics,undefined
来源：
Metal Science and Heat Treatment | 2016年 / 57卷
关键词：
Al – Li alloys; aging; mechanical properties;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
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页码：673 / 677
页数：4
相关论文
共 43 条
[1]  
Li HY(2008)Effect of ageing time on strength and microstructures of an Al – Cu – Li – Zn – Mg – Mn – Zr alloy Mater. Sci. Eng. A 498 314-320
[2]  
Yi T(1998)Independent and combined roles of trace Mg and Ag additions in properties, precipitation process and precipitation kinetics of Al – Cu – Li – (Mg) – (Ag) – Zr – Ti alloys Acta Mater. 46 4381-4393
[3]  
Zeng ZD(2002)Stress concentration sensitivity of Al – Li based alloys with various contents of impurities and cerium addition Mater. Sci. Eng. A 323 239-245
[4]  
Zheng ZQ(2002)Characterization of the precipitates in Al – Li (8090) alloy using thermal measurements and TEM examinations Physica B 315 1-6
[5]  
Huang BP(2013)Hot deformation behavior and microstructure of U720Li alloy Adv. Mater. Res. 709 143-147
[6]  
Cheng ZQ(2006)In situ high temperature ultrasonic evaluation for on-line characterisation of fine scale precipitation reactions in 8090 Al – Li alloy Mater. Sci. Eng. A. 435–436 29-39
[7]  
Meng L(2003)Transmission electron microscopy study of the evolution of precipitates in aged Al – Li – Cu alloys: the δ′ and Acta Mater. 51 4251-4266
[8]  
Tian L(2004) phases J. Mater. Tech. 153 603-607
[9]  
Gaber A(2008)Effect of heat treatment on the tensile properties of Al – Li alloys Mater. Sci. Eng. A. 483–484 448-451
[10]  
Afify N(2000)Effects of Sc on microstructure and low-cycle fatigue properties of Al – Li alloy Mater. Sci. Eng. A 280 161-167
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