(北京工业大学 材料科学与工程学院，
教育部新型功能材料重点实验室， 北京 100022)
摘 要: 采用真空感应熔炼的方法制备了稀土质量分数为0.15%的FeCr20Al5-La和FeCr20Al5-Y合金，经由锻造、热轧、 冷轧等工序，最终制得厚度为60μm的合金箔材，通过TEM和EDAX能谱分析方法研究了稀土元素在合金中的存在形式。实验结果表明：制备的FeCrAl-RE合金中稀土La主要以单质La和少量固溶的形式存在，稀土Y则主要有Fe23Y6、单质Y和少量固溶等存在形式。
关键字: 稀土； La； Y； FeCrAl
La and Y in FeCrAl-RE alloys
（The Key Laboratory of Advanced Functional Materials,
Ministry of Education, School of Materials Science and Engineering,
Beijing Polytechnic University, Beijing 100022, P.R.China）
Abstract:FeCr20Al5-La and FeCr20Al5-Y alloys added with rare earth metal of mass fraction 0.15% were prepared in a vacuum induction furnace. The ingots were rolled to foils with a thickness of 60μm through forging, hot rolling and cold rolling. TEM and EDAX were used to research the form of the rare earth elements of La and Y in as-prepared alloys. The results suggest that metal La and a small quantity of solid solution of La be the most form of La in as-prepared FeCr20Al5-La alloy, and Fe23Y6 compound, metal Y as well as a small quantity of solid solution of Y be the most form of Y in as-prepared FeCr20Al5-Y alloy.
Key words: rare earth; La; Y; FeCrAl
