Effect of erbium on properties and microstructure of Al-Si eutectic alloy
Effect of erbium on properties and microstructure of Al-Si eutectic alloy作者机构:School of Materials and Metallurgy Northeastern University Key Laboratory of Electromagnetic Processing of Materials Northeastern University
出 版 物:《Journal of Rare Earths》 (稀土学报(英文版))
年 卷 期:2010年第28卷第6期
页 面:927-930页
核心收录:
学科分类:08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程(可授工学、理学学位)]
基 金:Project supported by the National Key Science and Technology R&D Program (2009BAE80B00)
主 题:erbium eutectic Al-Si alloy microstructure modification rare earths
摘 要:Eutectic Al-12.6 wt.%Si alloys with various contents of the rare earth element Er were prepared by the conventional casting technique. The effect of Er on the microstructure and properties of the eutectic Al-Si alloys was investigated using optical microscopy, scanning electron microscopy as well as the friction and wear tests. It was found that the addition of Er obviously improved the anti-wear properties, and reduced the friction coefficient of the alloys. The appropriate addition of Er would change the size and shape of the eutectic silicon, and thereby refine the microstructure of the Al-Si alloys. The refinement mechanism was also discussed.