Effect of Temperature on Tensile Properties and Microstructure after Tensile at Different Temperatures of 2297-T87 Al-Li Alloy

YAO Ze; ZHONG Liwei; FENG Zhaohui; ZHU Congcong; GAO Wenli

doi:10.11973/jxgccl201905011

Materials and Mechanical Engineering > 2019 > 43(5): 54-57. > DOI: 10.11973/jxgccl201905011

YAO Ze, ZHONG Liwei, FENG Zhaohui, ZHU Congcong, GAO Wenli. Effect of Temperature on Tensile Properties and Microstructure after Tensile at Different Temperatures of 2297-T87 Al-Li Alloy[J]. Materials and Mechanical Engineering, 2019, 43(5): 54-57. DOI: 10.11973/jxgccl201905011

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Effect of Temperature on Tensile Properties and Microstructure after Tensile at Different Temperatures of 2297-T87 Al-Li Alloy

1. Shenyang Aircraft Corporation, Shenyang 110034, China;
2. College of Materials Science and Engineering, Hunan University, Changsha 410082, China;
3. Beijing Engineering Research Center of Advanced Aluminum Alloys and Applications, Institute of Aluminum Alloy, Beijing Institute of Aeronautical Materials, Beijing 100095, China

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Received Date: August 15, 2018
Revised Date: March 27, 2019

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Abstract

Tensile tests at 25-175℃ were carried out on 2297-T87 Al-Li alloy. The effect of temperature on tensile property of the alloy were studied and the microtructures after tensile were observed. The results show that with the increase of temperature, the tensile strength and yield strength of the alloy decreased, and the elongation increased. When the temperature rose to 175℃, the tensile strength and yield strength of the alloy were 77.72% and 82.03% of the tensile strength and yield strength at room temperature(25℃), and the alloy still had relatively high strength. The microstructures of the alloys were similar, and they were mainly composed of rolling deformed grains and a small amount of fine recrystallized grains.
- 2297 Al-Li alloy,
- tensile property,
- tensile strength,
- microstructure

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