Volume 26 Issue 5
May  2000
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LI Jian-guo, ZHANG Fu-xiang, WANG Li-jun, et al. Microstructures of Multi-phase Materials In-situ Formed in γ-TiAl Based Alloys[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(5): 501-504. (in Chinese)
Citation: LI Jian-guo, ZHANG Fu-xiang, WANG Li-jun, et al. Microstructures of Multi-phase Materials In-situ Formed in γ-TiAl Based Alloys[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(5): 501-504. (in Chinese)

Microstructures of Multi-phase Materials In-situ Formed in γ-TiAl Based Alloys

  • Received Date: 19 May 1999
  • Publish Date: 31 May 2000
  • The phases and microstructures in-situ formed by solid-state reaction were studied after the elements of B, C and Si were single and mixed doped to the TiAl-based alloys. The results showed that, in the Ti-Al-B alloys, the phases of TiAl, Ti3Al, and TiB2 were formed; in the Ti-Al-Si alloys, the phases ofTiAl, Ti3Al and Ti5(Al, Si)3 were formed; in the Ti-Al-C alloys, the phases of TiAl and Ti3AlC were formed; in the Ti-Al-B-Si alloys, the phases of TiAl, Ti3Al, TiB2 and Ti5(Al, Si)3 were formed; in the Ti-Al-B-C alloys, the phases of TiAl, TiB2 and Ti3AlC were formed; Finally, in the Ti-Al-B-C-Si alloys, besides the TiAl phases, the phases of partice TiB2, acicular TiB2, lath Ti3AlC and massive Ti5(Al,Si)3 all appeared, and this microstructure was approximately the same as pre-designed, therefore an optimized property is expected.

     

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