Volume 37 Issue 6
Dec.  2022
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ZHANG Keren, ZHANG Lele, PAN Hengpei, CHEN Jieming, ZHAO Hui. Influence of Ta Doping on Microstructure and Mechanical Properties of γ-TiAl Based Alloy[J]. Development and Application of Materials, 2022, 37(6): 76-82.
Citation: ZHANG Keren, ZHANG Lele, PAN Hengpei, CHEN Jieming, ZHAO Hui. Influence of Ta Doping on Microstructure and Mechanical Properties of γ-TiAl Based Alloy[J]. Development and Application of Materials, 2022, 37(6): 76-82.
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Influence of Ta Doping on Microstructure and Mechanical Properties of γ-TiAl Based Alloy

  • 1. School of Materials Science and Engineering, Xa'an Shiyou University, Xi'an 710065, China;

  • 2. Luoyang Ship Material Research Institute, Luoyang 471023, China

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  • Received Date: September 05, 2022
  • Available Online: January 11, 2023
    Graphical Abstract
    • Abstract
  • The evolution behavior of massive γ (γm) quenching from single α-phase region in Ti-48Al-2Nb-2Cr-xTa (x=0, 1.0, 2.0) alloy is systematically studied. The electron back scattering diffraction method is used to character the grain orientation. The precipitation of γm phase can be greatly promoted by Ta element. The critical content of Ta, promoting or inhibiting the precipitation of γm, is 2% (atom fraction). Ta element can refine the γm subgrains, and the various γm variants can directly nucleate inside the α2 grains in the form of BOR. In the course of growth, the γm nuclei selects its variant over the close-packed {111}γ plane, making the γm nuclei deviating from BOR.
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    • References (29)
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