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Jiangxi Nonferrous Metals Society
ISSN：1674-9669
CN：36-1311/TF
CODEN YJKYA9
Volume 5 Issue 6
Dec.  2014
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ZHANG Hejia, CHEN Liqing, WANG Wenguang, SUN Jing, WANG Quanzhao. Main factors influencing preparation of ultra-fine grained WC-10Co cemented carbide[J]. Nonferrous Metals Science and Engineering, 2014, 5(6): 47-52. DOI: 10.13264/j.cnki.ysjskx.2014.06.008
Citation: ZHANG Hejia, CHEN Liqing, WANG Wenguang, SUN Jing, WANG Quanzhao. Main factors influencing preparation of ultra-fine grained WC-10Co cemented carbide[J]. Nonferrous Metals Science and Engineering, 2014, 5(6): 47-52. DOI: 10.13264/j.cnki.ysjskx.2014.06.008
shu

Main factors influencing preparation of ultra-fine grained WC-10Co cemented carbide

  • 1.

    State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China

  • 2.

    School of Mechanical Engineering, Liaoning Shihua University, Fushun 113001, China

  • 3.

    Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

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  • Received Date: August 25, 2014
  • Published Date: December 30, 2014
    Graphical Abstract
    • Abstract
  • By using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and measuring mechanical behaviors, microstructures of WC and Co powders with different initial particle sizes are investigated after different times of ball milling. The ball milled composite powders with different percentage of grain growth inhibitors are vacuum hot-pressed and sintered to prepare ultra-fine grained cemented carbides and the microstructure and mechanical properties of the as-prepared cemented carbide are studied to reveal the effect of grain growth inhibitors of different proportions. The results show that the ultra-fine raw powder material has a good effect after a short time of ball milling; the grain refining effect in cemented carbide by adding VC+Cr3C2 or VC+TaC is better than that of the sole adding of VC; the WC particles has a near round shape and the bending strength of the cemented carbide can be improved by adding Cr3C2; the WC particles take shapes of triangle or quadrilateral after adding Tac which can improve the hardness of cemented carbide.
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    • References (22)
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