(冶金部钢铁研究总院，北京100081)
摘 要: 该文作者从1961年开始进行稀土元素在铁基、镍基、铜基、铝基等约百个2~4元金属溶液体系的热力学、相平衡及在20多个金属材料(包括稀土-铁超磁致伸缩材料)中的作用与应用研究，该文依据作者所在科研组的研究成果并参考一些文献，说明了稀土元素在金属材料中的作用和机理。
关键字: 稀上元素 金属材料 作用 机理
（General Iron and Steel Research, Institute,Ministry of Metallurgical Industry,beijing 100081）
Abstract:The effect and mechanism of rare earth elements in metals were explained briefly, based on our studies finished since1961 about the thermodynamics and phase equilibria of nearly 100 liquid systems of two to four components containing rare earth elements in Fe-, Ni-, Cu-, Al-base liquid solutions and the effect and application of more than twenty metals including supermagnetostrictive materials,sa well as on some references taken from other researchers.
Key words: rare earth elements metals effect mechanism
