(1.北京科技大學(xué) 材料科學(xué)與工程學(xué)院，北京 100083;
2.鄭州工業(yè)大學(xué) 材料研究中心，鄭州 450002;
3.北京有色金屬研究總院 復(fù)合材料中心， 北京 100088)
摘 要: 通過對(duì)不同TiC粒子含量的快速凝固Al-8Fe合金條帶顯微組織的觀察發(fā)現(xiàn)：隨著TiC含量的增加，合金的顯微組織產(chǎn)生明顯的細(xì)化，使快凝合金條帶的耐浸蝕區(qū)所占的比例增大，并在一定程度上抑制了初生Al6Fe塊狀相的生成。當(dāng)TiC含量達(dá)到10%(質(zhì)量分?jǐn)?shù))時(shí)，出現(xiàn)了大尺寸TiC顆粒聚集現(xiàn)象，同時(shí)生成少量初生Al6Fe塊狀相。
關(guān)鍵字: 原位反應(yīng)；顯微組織；Al-Fe合金
on microstructure of rapidly
solidified cast Al-8Fe alloy
ZHANG Yong-an3, ZHU Bao-hong3
（1.College of Materials Science and Engineering，
University of Science and Technology Beijing，Beijing 100083, China；
2.Research Center for Materials，
Zhengzhou University of Technology，Zhengzhou 450002, China;
3.General Research Institute for Nonferrous Metals，
Beijing 100088，China）
Abstract:The microstructure of rapidly solidified(RS) Al-8Fe ribbon with different TiC content was studied. The existence of TiC plays an important role in refining the alloy. The percent of corrosionresistant zone of the RS ribbon is increased by increasing TiC particle content and the nucleation of primary Al6Fe phase is restrained. In the RS Al8Fe ribbons with 10%TiC(mass fraction)，some TiC particles with large size congregate，together with fine TiC dispersoid uniformly distribute at the matrix. Some Al6Fe clump phase also can be observed.
Key words: in-situ reaction; microstructure; Al-Fe alloy
