航空学报 > 1994, Vol. 15 Issue (12): 1445-1449

采用XD工艺合成TiAl合金及TiC/TiAl复合材料的研究

陶春虎, 王守凯, 张少卿, 颜鸣皋   

  1. 北京航空材料研究所4室, 京, 100095
  • 收稿日期:1993-08-15 修回日期:1994-01-03 出版日期:1994-12-25 发布日期:1994-12-25

XD SYNTHESIS AND REACTIVE MECHANISM OF TiAl INTERMETALLICS AND TiC/TiAl COMPOSITE

Tao Chunhu, Wang Shoukai, Zhang Shaoqing, Yan Minggao   

  1. Faculty 4 of Beijing Institute of Aeronautical Materials, Beijing, 100095
  • Received:1993-08-15 Revised:1994-01-03 Online:1994-12-25 Published:1994-12-25

摘要: 研究了用XD(热爆)工艺合成TiAl合金及TiC/TiAl复合材料,井探讨了其合成反应机制。结果表明,可在Al的熔点附近用XD工艺制备TiAl合金及其TiC颗粒增强的TiC/TiAl复合材料,Ti-Al粉末间的放热反应促进了TiC的合成。TiAl合金由TiAl+Ti3Al相组成,而TiC/TiAl复合材料由TiC+TiAl+Ti3Al相组成。

关键词: 合成金属, 复合材料, 组分

Abstract: D(exothermic dispersi on)synthesis and its reactive mechanism for the TiAl intermetallics and TiAl based composite reinforced with TiC particles are investigated.The exper-imental results show that TiAl intermetallics and TiC/TiAl composite can be achieved by the XD process at higher temperature than the melting point of aluminium and that the thermopositive reaction between Ti powder and Al powder,3Ti±Al→Ti3Al and Ti+Al→ TiAl,promotes the synthesis of TiC.TiAl intermetallics is composed of γ TiAl+α2 Ti3Al and TiC/TiAl composite is composed of TiAl+Ti3Al+TiC phases.

Key words: synthetic metals, composite materials, constitution

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