JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 35 Issue 5
October 2020
Article Contents
ZHOU Xiangkui, LI Ying, ZHU Xueyang, et al. Effect of sintering temperature on the gradient formation and grain growth of the hardmetals[J]. Journal of Light Industry, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
Citation: ZHOU Xiangkui, LI Ying, ZHU Xueyang, et al. Effect of sintering temperature on the gradient formation and grain growth of the hardmetals[J]. Journal of Light Industry, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008 shu

Effect of sintering temperature on the gradient formation and grain growth of the hardmetals

  • Received Date: 2020-04-30
  • Taking WC-10%Co hardmetals as the research object, by adding cubic carbonitrides Ti(C,N) and (W,Ti)C, the hardmetals was heat treated by two-step sintering method, and the effects of sintering temperature on the gradient formation and grain growth were studied. The results showed that after the ultrafine WC powder was vacuum pre-sintered, the surface layer and core of the alloy were evenly distributed with hard phase WC, binder phase Co and cubic phase, and a small amount of abnormally grown WC grains appeared. After 1460℃ gradient sintering heat treatment, there was no cubic phase on the surface of the alloy, the thickness of the gradient layer could reach 55 μm and the average size of WC grains was about 1.23 μm, especially the number and size of abnormally grown WC grains were significantly increased.
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