Friction and wear behavior of Mg–11Y–5Gd–2Zn–0.5Zr(wt%)alloy with oil lubricant
Friction and wear behavior of Mg–11Y–5Gd–2Zn–0.5Zr(wt%) alloy with oil lubricant作者机构:College of Mechanical Engineering Shanghai University of Engineering Science National Engineering Research Center of Light Alloy Net Forming Shanghai Jiao Tong University
出 版 物:《Rare Metals》 (稀有金属(英文版))
年 卷 期:2013年第32卷第5期
页 面:453-458页
核心收录:
学科分类:0806[工学-冶金工程] 08[工学] 080203[工学-机械设计及理论] 0805[工学-材料科学与工程(可授工学、理学学位)] 0703[理学-化学] 0802[工学-机械工程] 0702[理学-物理学]
基 金:supported by the National Natural Science Foundation of China (No. 51074106) Key HiTech Research and Development Program of China (No. 2009AA033501) National Key Technology R&D Program of China (No. 2011BAE22B01-5)
主 题:Mg-11Y-5Gd-2Zn-0.5Zr alloy Long-period stacking order (LPSO) structure Lubricated Friction and wear
摘 要:The sliding friction and wear behaviors of Mg-11Y-5Gd-2Zn-0.5Zr (wt%) alloy were investigated under oil lubricant condition by pin-on-disk configuration with a constant sliding distance of 1,000 m in the temperature range of 25-200℃. Results indicate that the volumetric wear rates and average friction coefficients decrease with the increase of sliding speeds, and increase with the increase of test temperature below 150℃. The hard and thermally stable Mg12(Y,Gd)Zn phase with long-period stacking order structure in the alloy presents significant wear resistance, The wear mechanism below 100℃ is abrasive wear as a result of plastic extrusion deformation. The corporate effects of severe abrasive, oxidative, and delaminating wear result in the tribological mechanism above 100℃.