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Volume 39 Issue 4
Apr.  2013
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Journal of Beijing University of Aeronautics and Astronautics  > 2013  >  39(4): 549-552,558.
WANG Yang-zhu, CUI Zhong-xing. Research on Coning Compensation Algorithms for SINS[J]. Journal of Beijing University of Aeronautics and Astronautics, 2001, 27(3): 264-267. (in Chinese)
Citation: Su Meike, Zheng Lijing, Zhang Hu, et al. Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(4): 549-552,558. (in Chinese)
shu

Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy

  • 1.

    School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • 2. Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China

  • Received Date: 28 Apr 2012
  • Publish Date: 30 Apr 2013
    Abstract
  • Ti-46Al-2Cr-2Nb-(B,W)(at%) alloy prepared by powder metallurgy was direct heat treated and microstructures of the alloy were obtained by cooling at different cooling rates. Results show that duplex microstructure consisting mainly of fine equiaxed γ grains and lamellar colonies were obtained at cooling rate of 50℃/min. High volume fractions of lamellar colonies result in low elongation. Structure consisting mainly of fine γ grains and α2 grains were formed at cooling rate of 10℃/min and 5℃/min. Presence of α2 phase further reduced the elongation.

     

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    • References(18)
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