Friction and wear behavior of Mg–11Y–5Gd–2Zn–0.5Zr(wt%)alloy with oil lubricant

作     者：Li-Jie Cao Qu-Dong Wang Yu-Juan Wu Bing Ye 

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℃.