炭化物生成元素のレーザ合金化による鋳鉄表面の硬化 Surface Hardening of Cast Irons by Laser Alloying of Carbide Forming Element

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  Laser surface alloying of cast irons was carried out to obtain harder surface by carbide formation of alloyed element and graphite in the substrates. The alloying elements used were chromium or tungsten. To feed the alloying elements, a powder coated layer or electro plated layer was formed on the surface of the specimens prior to laser irradiation. Alloyed structures were obtained under the proper treatment conditions and X-ray diffraction tests showed that the modified structure with chromium powder layer contains chromium carbide (Cr<sub>7</sub>C<sub>3</sub>). Their microhardness was 950HV. The microstructures of tungsten treated speci-mens have primary dendrites and tungsten rich smooth matrix. X-ray diffraction also revealed the presence of W and Fe complex carbide and cementite. The microhardness of the tungsten alloyed structure, which is higher than that of melted-solidified structure without alloying element, was 1300HV.

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 68(8), 657-661, 1996-08-25 

    Japan Foundry Engineering Society

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各種コード

  • NII論文ID(NAID)
    10002113854
  • 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
    4021295
  • 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  CJP引用  NDL  J-STAGE 
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