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.
  • 加载中
    1. [1]

      KOVILADA B,GANGOPADHYAY S,THAKUR A.Comparative evaluation of machinability characteristics of Nimonic C-263 using CVD and PVD coated tools[J].Measurement,2016,85:152.

    2. [2]

      ABHISHEK S,GHOSH S,ARAVINDAN S.Flank wear and rake wear studies for arc enhanced HiPIMS coated AlTiN tools during high speed machining of nickel-based superalloy[J].Surface & Coating Technology,2020,381:125190.

    3. [3]

      SUZUKI H,HAYASHI K,TANIGUCHI Y.The β-free layer formed near the surface of vacuum-sintered WC-β-Co alloys containing nitrogen[J].Transactions of the Japan Institute of Metals,1981,22:758.

    4. [4]

      DENKENA B,GROVE T,THEUER M.Micro crack formation in hardmetal milling tools[J].International Journal of Refractory Metals and Hard Materials,2018,70:210.

    5. [5]

      HOLLMANN P,GRUMBT G,ZENKER R,et al.Investigation of cracking prevention in magnetron-sputtered TiAlN coatings during subsequent electron beam hardening[J].Surface and Coatings Technology,2018,338:75.

    6. [6]

      EKROTH M,FRYKHOLM R,LINDHOLN M,et al.Gradient zones in WC-Ti(C,N)-Co-based cemented carbides:Experimental study and computer simulations[J].Acta Mater,2000,48:2177.

    7. [7]

      YANG T E,SUN L,XIONG J,et al.Adherent coating on gradient cemented carbide with ultrafine Ti(C0.5,N0.5)[J].Rare Metal,2015,34(6):413.

    8. [8]

      GARCIA J,PITONAK R.The role of cemented carbide functionally graded outer-layers on the wear performance of coated cutting tools[J].International Journal of Refractory Metals and Hard Materials,2013,36:52.

    9. [9]

      CHEN W M,XIE W,ZHANG L J,et al.Diffusion-controlled growth of fcc-free surface layers on cemented carbides:Experimental measurements coupled with computer simulation[J].International Journal of Refractory Metals and Hard Materials,2013,41:531.

    10. [10]

      ORTNER H M,ETTMAYER P,KOLASK H,et al.The history of the technological progress of hardmetals[J].Journal of Refractory Metals and Hard Materials,2015,49:3.

    11. [11]

      WALBRUHL M,BLOMQVIST A,KORZHAVYI P A,et al.Surface gradients in cemented carbides from first-principles-based multiscale modeling:Atomic diffusion in liquid Co[J].International Journal of Refractory Metals and Hard Materials,2017,66:174.

    12. [12]

      WALBRUHL M,LINDER D,AGREN J,et al.Diffusion modeling in cemented carbides:Solubility assessment for Co,Fe and Ni binder systems[J].International Journal of Refractory Metals and Hard Materials,2017,68:41.

    13. [13]

      MANNESSON K,JEPPSSON J,BORGENSTAM A,et al.Carbide grain growth in cemented carbides[J].Acta Materials,2011,59:1912.

Article Metrics

Article views(1198) PDF downloads(13) Cited by()

Ralated
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return