基于箔材反应退火合成的Ti Al基复合材料板材研究进展  

Recent Progress on the Fabrication of TiAl-Based Composites Sheet by Reaction Annealing of Elemental Foils

作　　者：耿林[1] 吴昊 崔喜平[1] 范国华[1] GENG Lin;WU Hao;CUI Xiping;FAN Guohua(School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《金属学报》2018年第11期1625-1636,共12页Acta Metallurgica Sinica

基　　金：国家重点研发计划项目No.2017YFB0703100;国家自然科学基金项目Nos.51701081;51571070和51571071~~

摘　　要：本文综述了利用纯Ti箔和铝基复合材料(Al-MMC)箔反应退火合成Ti Al基复合材料板材的研究进展。该方法包括对多层Ti/Al-MMC复合板的变形和反应退火热处理,在避免对脆性TiAl金属间化合物直接变形的同时,制备出具有较高强度和延伸率的Ti Al基复合材料板材。对合成过程中Ti Al基复合材料板材的组织演化和形成机理进行了总结,重点阐明了铝基复合材料与Ti的两步热处理的反应机理,提出了消除Kirkendall孔洞的工艺方法,为大尺寸TiAl基复合材料板材的制备提供了可行的工艺方案。This paper reviews the current progresses on the fabrication of TiAI-based composites produced by reaction annealing of elemental Ti and AI matrix composite foils. This technique includes de- formation and reaction annealing of the multilayer Ti/AI metal matrix composite （MMC） sheet, which pre- vents traditionally direct deformation of brittle TiAI intermetallic, and TiAI-based composites sheets with good strength-ductility synergy have been produced. The research on microstructure evolution and form- ing mechanism of the TiAI-based composites sheet during reaction annealing has been summarized, with the focus on the reaction mechanism between AI-MMCs and Ti during reaction annealing, and the meth- od to eliminate Kirkendall voids is proposed. A feasible proposal is provided to fabricate large scale TiAI- based composite sheets.

关 键 词：TIAL金属间化合物 复合材料 板材 反应退火 扩散动力学 

分 类 号：TB331[一般工业技术—材料科学与工程]