Effect of aging treatment on the creep resistance of Al-Cu-Mg-Ag alloy

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Liu, Ping^1 ; Liu, Xiaoyan^1 ; Cui, Zhenhua^1 ; Gao, Fei^1

College of Materials Science and Engineering, Hebei University of Engineering, Handan

056038, China^1

关键词: Aging treatment;    Al-Cu-Mg-Ag alloy;    Creep rates;    Cyclic creep;    Larger deformations;    Peak aged;    Stress loading;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/2/022149/pdf
DOI  :  10.1088/1757-899X/452/2/022149

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The effect of the aged treatment on the creep resistance of Al-Cu-Mg-Ag alloy was investigated by creep test, metallographic and transmission electronic analysis. The results indicate that the creep rate of the under-aged sample is lower to than that of the peak-aged sample in the tested conditions. This means that the under-aged Al-Cu-Mg-Ag alloy possess higher creep resistance both in the pure creep tests and the cyclic creep tests. The grains in the crept samples are elongated along the stress loading direction and the larger deformation is observed in the peak-aged sample. The precipitations are distributed dispersive in the matrix and their size is smaller than that in the peak-aged sample. This results in the higher creep resistance of the under-aged Al-Cu-Mg-Ag alloy.