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Volume 43 Issue 1
Jan.  2025
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SU Xuwen, HE Zhi, YAN Shuxin, DONG Longlong, SUN Guodong. Effect of nano-ZrC powders on microstructure and properties of 90W−7Ni−3Fe alloys[J]. Powder Metallurgy Technology, 2025, 43(1): 86-93. DOI: 10.19591/j.cnki.cn11-1974/tf.2023040009
Citation: SU Xuwen, HE Zhi, YAN Shuxin, DONG Longlong, SUN Guodong. Effect of nano-ZrC powders on microstructure and properties of 90W−7Ni−3Fe alloys[J]. Powder Metallurgy Technology, 2025, 43(1): 86-93. DOI: 10.19591/j.cnki.cn11-1974/tf.2023040009
shu

Effect of nano-ZrC powders on microstructure and properties of 90W−7Ni−3Fe alloys

  • 1.

    School of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China

  • 2.

    Xi'an Rare Metal Materials Institute Co. Ltd, Xi’an 710016, China

  • 3.

    Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China

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  • Corresponding author:

    SUN Guodong, E-mail: guodongsun@qq.com

  • Received Date: May 25, 2023
  • Available Online: July 27, 2023
    Graphical Abstract
    • Abstract

  • To effectively inhibit the growth of tungsten grains during the liquid phase sintering, the ZrC dispersion-strengthened heavy tungsten alloys (WHAs) were prepared by liquid phase sintering at 1500 ℃. The effects of ZrC mass fraction (1% and 2%) on the microstructure and properties of WHAs were analyzed. The results show that, with the increase of ZrC mass fraction, the relative density and W−W contiguity of WHAs decrease, and the tungsten grains are refined to a certain extent. When the ZrC mass fraction is 1%, the strength-ductility matching effect of WHAs is the best, the relative density reaches 98.4%, the tungsten grain size is 22.17 μm, and the yield strength and compressive strength (40% deformation) reach 791 MPa and 2179 MPa, respectively, which are increased by 8.35% and 38.70%, compared with WHAs without ZrC (730 MPa and 1570 MPa).

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