CAJ | 학술논문

TiAl合金密度小、高温性能优异，自20世纪50年代以来已发展到第三代。介绍了TiAl合金的性能特点、发展历程，真空感应熔炼、真空自耗电弧熔炼、等离子冷床炉熔炼等熔炼TiAl合金方法的优缺点，以及国内外TiAl合金的制备情况；提出TiAl合金熔炼过程中存在的问题主要是宏观与微观偏析，应从原料加入方式、原料纯度及熔炼工艺等方面进行改进；此外，对TiAl合金在航空航天、汽车工业等领域的应用现状进行了概括，指出TiAl合金近期的研究重点是大尺寸铸锭的均匀化控制。
TiAl합금밀도소、고온성능우이，자20세기50년대이래이발전도제삼대。개소료TiAl합금적성능특점、발전역정，진공감응용련、진공자모전호용련、등리자랭상로용련등용련TiAl합금방법적우결점，이급국내외TiAl합금적제비정황；제출TiAl합금용련과정중존재적문제주요시굉관여미관편석，응종원료가입방식、원료순도급용련공예등방면진행개진；차외，대TiAl합금재항공항천、기차공업등영역적응용현상진행료개괄，지출TiAl합금근기적연구중점시대척촌주정적균균화공제。
TiAl alloy has low density and good performance at high temperature , and has developed to the third gener-ation since the 1950 s.The performance feature , development process , preparation conditions at home and abroad , and the traditional melting methods ( vacuum induction melting , vacuum arc melting and plasma melting ) of TiAl alloy were also introduced .Then the main problems in the smelting process of TiAl alloy were indicated to be macro segrega -tion and micro segregation , and should be improve through adding method and purity of raw material and melting process control .The application status of TiAl alloy in the fields of aviation , aerospace and automobile industry were summarized, and the development trend of TiAl alloy in the near future was homogenizing control of large size TiAl alloy ingots .