Effect of rolling temperature on microstructure and wear resistance of AZ31 magnesium alloy

doi:10.13251/j.issn.0254-6051.2023.06.010

Abstract

Abstract: AZ31 magnesium alloy after solution treatment was rolled at different rolling temperatures (200, 300 and 400 ℃) to study the effect of rolling temperature on microstructure and wear resistance. The results show that the AZ31 alloy is completely recrystallized after rolling, and the grains are significantly refined, and the second phase is more uniformly and finely distributed. With the increase of rolling temperature, the grain and second phase sizes of the rolled alloy increase, the effect of fine grain strengthening and dispersion strengthening are weakened, the hardness decreases, the thermal stability and wear resistance decrease, and the wear mechanism changes from abrasive wear to adhesive wear.

Key words: AZ31 magnesium alloy, rolling temperature, grain refining, second phase, wear resistance

CLC Number:

TG146.2

Li Qingfen, Deng Bin, Wu Yuanzhi, Qu Weiming, Liu Xianlan, Xiang Sicheng, Wang Ke, Yin Haoyi. Effect of rolling temperature on microstructure and wear resistance of AZ31 magnesium alloy[J]. Heat Treatment of Metals, 2023, 48(6): 58-62.

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