Effect of 300Hz/70V pulse current processing on properties of AZ31 magnesium alloy

1st International Global on Renewable Energy and Development

Guan, Zunyu^1

School of Engineering, Hong Kong University of Science and Technology, China., 999077, Hong Kong^1

关键词: AZ31 magnesium alloy;    Electric pulse;    Mechanical tensile tests;    Metallographic structure;    Microhardness measurement;    Microstructure and mechanical properties;    Static recrystallization;    Strength and elongations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/100/1/012023/pdf
DOI  :  10.1088/1755-1315/100/1/012023

来源: IOP

【 摘 要 】

In this paper, the pulse current treatment on AZ31 magnesium alloy material is compared to the ordinary heat treatment of AZ31 magnesium alloy in terms of influence of the macro mechanical properties, through mechanical tensile test and microhardness measurement. By adjusting the electric pulse processing time, the different metallographic structures can be obtained, then we analyzed the differences between the two ways of dealing with the AZ31 magnesium alloy in terms of microstructure and mechanical property. The result shows that the pulse current processing on the optimization of AZ31 magnesium alloy mechanical properties better than conventional annealing heat treatment. Magnesium alloy specimen can acquire greater tensile strength and elongation after pulse current processing. What's more, static recrystallization caused by pulse current is more likely to happen compared to normal annealing heat treatment and it is easier to get more uniform fine grain through pulse current processing.