多合金系白鋳鉄における析出炭化物の解析 Analysis of Precipitated Carbides in Matrix of Multi-component White Cast Iron

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  The type and alloy concentration of precipitated carbides in matrix were investigated using X-ray diffraction, SEM, TEM and EDS analyses in multi-component white cast iron with typical composition of Fe-2%C-5%Cr-5%V-5%Mo-5%W-5%Co (mass%). MC, M<sub>2</sub>C and M<sub>7</sub>C<sub>3</sub> carbides already exist in the as-cast state. M<sub>6</sub>C and M<sub>7</sub>C<sub>3</sub> carbides are precipitated during annealing, and carbides existing in the hardened-tempered state are MC, M<sub>6</sub>C and M<sub>7</sub>C<sub>3</sub> types. In the as-cast state, two types of crystal lattices were confirmed in the MC carbide, mostly face-centered cubic (FCC) and partly hexagonal. The MC carbides contain V by more than 65at%. M<sub>2</sub>C carbide with hexagonal lattice contains 35at% of Cr and Mo, and 12at% of V and W. M<sub>6</sub>C carbide with FCC lattice consists of 44at% of (Mo+W) and 45at% of Fe. M<sub>7</sub>C<sub>3</sub> carbide has orthorhombic lattice, but shows different shapes ; string-shape in the as-cast and hardened-tempered states and oval in the as-annealed state. The M<sub>7</sub>C<sub>3</sub> carbide is mainly formed from Cr and Fe.

収録刊行物

  • 鋳造工学 = Journal of Japan Foundry Engineering Society

    鋳造工学 = Journal of Japan Foundry Engineering Society 76(3), 205-211, 2004-03-25

    公益社団法人 日本鋳造工学会

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各種コード

  • NII論文ID(NAID)
    10013435535
  • NII書誌ID(NCID)
    AN10514770
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13420429
  • NDL 記事登録ID
    6885856
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-277
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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