超高强铝合金中杂质元素的研究现状  

Research Status on Impurities in Ultra High Strength Aluminum Alloys

作　　者：刘宏亮[1] 疏达[1] 王俊[1] 孙宝德[1] 

机构地区：[1]上海交通大学金属及复合材料国家重点实验室,上海200240

出　　处：《材料导报》2011年第5期84-88,共5页Materials Reports

基　　金：国家重点基础研究发展计划(973)项目课题(2005CB623703);国家杰出青年科学基金项目(50825401)

摘　　要：综述了超高强铝合金中Fe、Si等杂质元素的存在形式以及对合金组织、拉伸力学性能、断裂韧性和抗腐蚀性能的影响,总结了Fe、Si等杂质元素的控制标准,概述了通过熔体净化、添加稀土元素、采用粉末冶金等新型制备工艺减小杂质元素影响的研究进展。The existing fon＇as of main impurity elements such as Fe and Si and the influence on the microstructure, tensile properties, fracture toughness and stress corrosion cracking of ultra high strength aluminum alloys are re- viewed. The controlling standards of＇Fe and Si are summarized. The research development of several methods to de- crease the harmful effects of impurities are discussed, including melt purification, addition of rare earth elements, and novel processing technologies such as powder metallurgy.

关 键 词：超高强铝合金 杂质元素 组织 性能 控制方法 

分 类 号：TG146.21[一般工业技术—材料科学与工程]