急速凝固鋳鉄粉末の焼結特性

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書誌事項

タイトル別名
  • Sintering Characteristics of Rapidly Solidified Cast Iron Powder
  • キュウソク ギョウコ チュウテツフンマツ ノ ショウケツ トクセイ

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抄録

  The consolidation and sintering behavior and the microscopic structure during or after sintering were investigated for the samples A (Fe-4.29 % C) and B (Fe-3.88 % C-1.86 % Si) of cast iron powder which were atomized by the water. A summary of results is shown below. Sample B with silicon could not obtain a sufficient density compared to sample A because graphite precipitates at grain boundaries prior to sintering reaction. The similar effect was also recognized on the specimens which were sintered using a mixed powder of a metal powder of graphitization element and sample A. The structure after sintering on both the samples was fine pearlite, and the graphite was too fine to be observed by optical microscope. However hardness of the samples were very low (HRB = 20) compared to a practical cast iron. The decomposition rate of carbides in as-received powder is considerably high. Carbides were completely decomposed at 3.6 ks after heating even the sample A without silicon.

収録刊行物

  • 鋳物

    鋳物 65 (6), 462-467, 1993

    公益社団法人 日本鋳造工学会

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