A Consideration on Grain Growth in WC-Co Fine Grained Hardmetal by Numerical Calculation Based on Alloy Model with Three Kinds of Grain Sizes (特集 硬質材料) A Consideration on Grain Growth in WC-Co Fine Grained Hardmetal by Numerical Calculation Based on Alloy Model with Three Kinds of Grain Sizes

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In the previous work, we have derived a differential equation for the numerical calculation of the abnormal growth of WC grains in WC-VC-Co fine grained hardmetal, based on grain-dispersed alloy model with two kinds of grain sizes (2-grain-size model) where the rate-determining step of Ostwald ripening of WC grains is the interface reaction, and then numerically estimated the initial sizes of small and large grains where the abnormal grain growth occurs. In this work, first we derived differential equations for calculating each grain size and mean grain size in alloy model with three kinds of grain sizes (3-grain-size model), secondly calculated the large grain size and mean grain size after sintering for WC-0.5mass%VC-l0mass%Co fine grained hardmetal as a function of initial sizes of three kinds of grains and their initial mass fractions, and finally estimated both more detailed conditions for the occurrence or non-occurrence of the abnormal grain growth and the mean grain size.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(6), 535-543, 1998-06-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002052223
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4502277
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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