Transactions of Materials and Heat Treatment

Title：Effect of step forging on corrosion resistance and wear resistance properties of AZ80 magnesium alloy for automobile

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ClassificationCode：TH164

year,vol(issue):pagenumber：2023,48(1):23-29

Abstract：

In order to explore the influences of step forging on the corrosion resistance and wear resistance properties of AZ80 magnesium alloy for automobile, the homogenized AZ80 magnesium alloys were processed by the one time forging treatment at a high strain rate of 4×10-1 s-1 and the step forging treatment first at a low strain rate of 4×10-3 s-1 and then at a high strain rate of 4×10-3 s-1. Then, compared with the samples before forging, the microstructure, corrosion resistance property and wear resistance property of samples were compared and analyzed. The results show that the effect of step forging is better than that of one-time forging in terms of microstructure refinement, corrosion resistance and wear resistance improvement. Compared with the sample before forging, the one-time forging can reduce the corrosion potential by 1. 58%, the corrosion current density by 2. 77%, and the wear volume under the applied load condition of 500 N by 25. 00%. The step forging can reduce the corrosion potential by 5. 83%, the corrosion current density by 7. 03%, and the wear volume under the applied load condition of 500 N by 54. 64%. Thus, the step forging treatment is an effective way to improve the corrosion resistance and wear resistance properties of AZ80 magnesium alloy for automobile.

Funds：

吉林省教育厅“ 十三五” 科学技术研究项目(JJKH20181388KJ)

作者简介: 孙忠玉(1975-), 女, 学士, 副教授 E-mail: na5341@ 163. com

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