摘要
对2297-T87铝锂合金在25～175℃下进行了拉伸试验,研究了温度对该合金拉伸性能的影响,观察了拉伸后的显微组织。结果表明:随着温度升高,合金的抗拉强度和屈服强度降低,伸长率增大;当温度升至175℃时,合金的抗拉强度和屈服强度为室温(25℃)时的77.72%和82.03%,合金仍具有较高的强度;在25～175℃拉伸后,合金的显微组织相似,均主要由轧制变形晶粒和少量细小再结晶晶粒组成。
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.
作者
姚泽
钟立伟
冯朝辉
朱聪聪
高文理
YAO Ze;ZHONG Liwei;FENG Zhaohui;ZHU Congcong;GAO Wenli(Shenyang Aircraft Corporation, Shenyang 110034, China;College of Materials Science and Engineering, Hunan University, Changsha 410082,China;Beijing Engineering Research Center of Advanced Aluminum Alloys and Applications, Institute of Aluminum Alloy, Beijing Institute of Aeronautical Materials, Beijing 100095, China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2019年第5期54-57,共4页
Materials For Mechanical Engineering
基金
国家自然科学基金资助项目(51474195
51374187
51474101)
