Abstract：In order to determine the effects of single-stage aging regime on the microstructures, mechanical properties and corrosion properties of 2A97 Al-Li alloys, the methods of room temperature tensile, intergranular corrosion, exfoliation corrosion, electrochemical corrosion and TEM observation were used to investigate the microstructure, mechanical properties and corrosion properties of 2A97 Al-Li alloys after different single-stage aging treatments. The alloys were tested and characterized. The results show that with increasing the aging temperature, the aging time for 2A97 Al-Li alloys to obtain the best mechanical properties decreases. With increasing the aging temperature and aging time, the corrosion resistance of the alloys decreases. After aging at 165 ℃ for 60 h, the tensile strength, yield strength and elongation of the alloys are 549 MPa, 484 MPa, and 8.8%, respectively, the intergranular corrosion is grade 4, and the exfoliation corrosion grade is EC.
游任轩, 马运柱, 汤娅, 赵心阅, 刘文胜. 单级时效处理对2A97铝锂合金组织、力学性能和腐蚀性能的影响[J]. 粉末冶金材料科学与工程, 2022, 27(4): 398-408.
YOU Renxuan, MA Yunzhu, TANG Ya, ZHAO Xinyue, LIU Wensheng. Effects of single-stage aging treatment on microstructure, mechanical properties and corrosion properties of 2A97 Al-Li alloys. Materials Science and Engineering of Powder Metallurgy, 2022, 27(4): 398-408.
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2022, Vol. 27 
