Volume 39 Issue 4
Aug.  2024
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LI Han, LIU Fengzhu, CUI Yunfeng, LI Shikai, WANG Wenyan, XIE Jingpei, HUANG Wenjun, DIAO Xiaogang. Effect of Y Addition on Microstructure and Mechanical Properties of Ti-6Al-4V-2Cr-1.5Mo Alloy[J]. Development and Application of Materials, 2024, 39(4): 38-44,75.
Citation: LI Han, LIU Fengzhu, CUI Yunfeng, LI Shikai, WANG Wenyan, XIE Jingpei, HUANG Wenjun, DIAO Xiaogang. Effect of Y Addition on Microstructure and Mechanical Properties of Ti-6Al-4V-2Cr-1.5Mo Alloy[J]. Development and Application of Materials, 2024, 39(4): 38-44,75.
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Effect of Y Addition on Microstructure and Mechanical Properties of Ti-6Al-4V-2Cr-1.5Mo Alloy

  • 1. Luoyang Ship Material Research Institute, Luoyang 471023, China;

  • 2. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471000, China;

  • 3. CITIC Heavy Industry Luoyang Heavy Iron Industry Co., Ltd., Luoyang 471000, China

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  • Received Date: April 29, 2024
  • Available Online: September 11, 2024
    Graphical Abstract
    • Abstract
  • The microstructures and mechanical properties of Ti-6Al-4V-2Cr-1.5 Mo-xY (x =0.1, 0.5, 1.0, 1.5, mass fraction) alloys are analyzed by means of OM, SEM, XRD, and TEM. It is found out that the microstructures of Ti-6Al-4V-2Cr-1.5 Mo-xY alloys are refined obviously after adding the rare earth Y element, that the Y2O3 phases formed are dispersed in the matrix, and that the mechanical properties of the alloy increase first and then decrease with the increase of the content of rare earth Y. The strength, hardness, elongation and properties of the alloy are the best when the addition of Y element is 0.5%. The mismatch between Y2O3 and the matrix α-Ti of the annealed Ti-6Al-4V-2Cr-1.5 Mo-0.5 Y is 0.141 3, which belongs to semi-coherent interface.
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