(北京工業(yè)大學 材料科學與工程學院，
教育部新型功能材料重點實驗室， 北京 100022)
摘 要: 采用真空感應熔煉的方法制備了稀土質(zhì)量分數(shù)為0.15%的FeCr20Al5-La和FeCr20Al5-Y合金，經(jīng)由鍛造、熱軋、 冷軋等工序，最終制得厚度為60μm的合金箔材，通過TEM和EDAX能譜分析方法研究了稀土元素在合金中的存在形式。實驗結果表明：制備的FeCrAl-RE合金中稀土La主要以單質(zhì)La和少量固溶的形式存在，稀土Y則主要有Fe23Y6、單質(zhì)Y和少量固溶等存在形式。
關鍵字: 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
