Dry sliding wear behavior of cast Mg-11Y-5Gd-2Zn magnesium alloy

作者：Hu Mao liang; Wang Qu dong^*; Li Cheng; Ding Wen jiang

来源：Transactions of Nonferrous Metals Society of China, 2012, 22(8): 1918-1923.

DOI：10.1016/S1003-6326(11)61408-8

• Mg-Y-Gd-Zn alloy
• wear behavior
• wear rate
• sliding wear
• abrasive wear

Dry sliding wear tests on as-cast and cast T6 Mg-11Y-5Gd-2Zn magnesium alloys were performed using a ball-on-plate configuration. The wear rates were measured within a load range of 3-15 N, sliding speed range of 0.03-0.24 m/s, test temperature range of 25-200 degrees C and at a constant sliding distance of 400 m. The wear tracks, worn surfaces and wear debris of the alloys were analyzed using scanning electron microscope (SEM). The results show that the wear rate of the alloys increases almost linearly with increasing applied load and decreases with increasing sliding speed. The wear rate of the as-cast alloy is higher than that of the cast T6 alloy. The amount of Mg12Y1Zn1 phase, surface oxidation and retained wear debris affect the wear rate. The dominant wear mechanisms under the test condition are abrasion and plastic deformation.

• 出版日期2012-8
• 单位哈尔滨学院; 上海交通大学