鋼塊の逆V偏析の軽減機構

DOI Web Site Web Site 被引用文献2件

書誌事項

タイトル別名
  • The Elimination Mechanism of “A” Segregates of Steel Ingot
  • コウカイ ノ ギャク V ヘンセキ ノ ケイゲン キコウ
  • The Elimination Mechanism of “A” Segregates of Steel Ingot

この論文をさがす

抄録

The mobility of the interdendritic liquid metal under the solid-liquid state was measured by means of sucking out the liquid to a vacuum chamber when Si or Mo contents of materials were varied in order to discuss the elimination mechanism of “A” segregates such as by lowering Si content or adding Mo. The results obtained are summarized as follows:<BR>1) Amounts of metal sucked decreased as solid fraction increased. An abrupt increase of the fluidity resistance of low Si material occurred in lower solid fraction side than that of high Si material, and this effect is particularly characteristic of low alloy steels with Ni, Cr, Mo and V.<BR>2) These phenomena could not be explained only by the viscosity or density difference of the movable liquid in dendrite array. Consequently it should be explained by the difference of dendrite array when the solidification front was being formed in the solid-liquid zone.<BR>3) These effects of Si and Mo can be explained by the following mechanism; i. e. the solidification front is formed in lower solid fraction side when Si is lowered or Mo is added, and then a driving force for floatation of the solute-enriched liquid metal will not be great enough to form the segregates as the concentration of interdendridc liquid at the solidification front does not become great. <BR>Thus, the elimination mechanism of “A” segregates can be concluded to be caused by a shift of the solidification front to lower solid fraction side because of change in dendrite array.

収録刊行物

  • 鉄と鋼

    鉄と鋼 65 (10), 1581-1588, 1979

    一般社団法人 日本鉄鋼協会

被引用文献 (2)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ