WC-40mass%Co合金/炭素鋼の接合界面における組織と強度 Microstructure and Strength of Interface in Joint of WC-40mass%Co Alloy/Carbon Steel

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New bonding method of cemented carbide tip and carbon steel with WC-(20-60mass%)Co alloy powder as thermal stress relaxation layer was proposed by authors. These joints were frequently fractured near the interface between sintered WC-Co alloy and steel. In this study, microstructure and strength of sintered bonding area between WC-40mass%Co alloy powder and 0.23-0.96mass%aC steels have been investigated. It is recognized that the reaction layer including tl phase of Co<SUB>3</SUB>W<SUB>3</SUB>C and Fe<SUB>3</SUB>W<SUB>3</SUB>C particles are formed inside the sintered WC-40mass%Co alloy near the interface. The thickness of reaction layer decreased with the increase in carbon content of steels and is zero for carbon content of 0.55mass% or more. Four-point bending strength, which is increased with the increase in C content of steels, is approximately 1.3GPa for 0.96mass%C. The strength is strongly affected by the existence of η phase.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 44(10), 958-962, 1997-10-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002261582
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4324261
  • 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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