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Microstructure and mechanical properties of cast Ti-47Al-2Cr-2Nb alloy melted in various crucibles 被引量：2

Microstructure and mechanical properties of cast Ti-47Al-2Cr-2Nb alloy melted in various crucibles
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摘要 The main factors limiting the mass production of TiAl-based components are the high reactivity of TiAl-based alloys with the crucible or mould at high temperature.In this work,various crucibles (e.g.CaO,Y2O3 ceramic crucibles and water-cooled copper crucible) were used to fabricate the Ti-47Al-2Cr-2Nb alloy in a vacuum induction furnace.The effects of crucible materials and melting parameters on the microstructure and mechanical properties of the alloy were analyzed by means of microstructure observation,chemical analysis,tensile test and fracture surface observation.The possibilities of melting TiAl alloys in crucibles made of CaO and Y2O3 refractory materials were also discussed. The main factors limiting the mass production of TiAI-based components are the high reactivity of TiAl- based alloys with the crucible or mould at high temperature. In this work, various crucibles （e.g. CaO, Y203 ceramic crucibles and water-cooled copper crucible） were used to fabricate the Ti-47Al-2Cr-2Nb alloy in a vacuum induction furnace. The effects of crucible materials and melting parameters on the microstructure and mechanical properties of the alloy were analyzed by means of microstructure observation, chemical analysis, tensile test and fracture surface observation. The possibilities of melting TiAI alloys in crucibles made of CaO and Y2O3 refractory materials were also discussed.
作者 Wang Ligang Zheng Lijing Cui Renjie Yang Lili Zhang Hu
机构地区 School of Materials Science and Engineering
出处 《China Foundry》 SCIE CAS 2012年第1期48-52,共5页 中国铸造（英文版）
关键词 Ti-47Al-2Cr-2Nb alloy ceramic crucibles mechanical properties MICROSTRUCTURE Ti-47Al-2Cr-2Nb alloy ceramic crucibles mechanical properties microstructure
分类号 TG146.23 [金属学及工艺—金属材料]
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参考文献13

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同被引文献40

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China Foundry
2012年 第1期

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