Fe-C鋼の一方向凝固過程におけるδ-γ変態の時間分解・その場観察

DOI Web Site Web Site 被引用文献12件 参考文献29件

書誌事項

タイトル別名
  • Time-resolved and <i>In-situ</i> Observation of δ-γ Transformation during Unidirectional Solidification in Fe-C Alloys
  • Fe-Cコウ ノ イチホウコウ ギョウコ カテイ ニ オケル d-gヘンタイ ノ ジカン ブンカイ ・ ソノ バ カンサツ

この論文をさがす

抄録

<p>Time-resolved and in-situ observations using synchrotron radiation X-rays successfully proved that the massive-like transformation, in which the γ phase was produced through the solid – solid transformation and the partition of substitute elements such as Mn and Si at the δ/γ interface could be negligibly small, was selected in the unidirectional solidification of 0.3 mass%C steel at a pulling rate of 50 μm/s. The massive-like transformation produced fine γ grains in the vicinity of the front of δ/γ interface. The coarse γ grains also grew behind the fine γ grains along the temperature gradient. Distance between the δ/γ front and the advancing front of coarse γ grains was as short as 200 μm. Namely, the fine γ grains disappeared within 10 s by the growth of coarsen γ grains along the temperature gradient. In addition, the observation of the δ/γ interface confirmed that a transition from the diffusion-controlled γ growth to the massive-like growth of γ phase occurred at a growth rate of 5 μm/s. Thus, the massive-like transformation is dominantly selected in the carbon steel during conventional solidification processes.</p>

収録刊行物

  • 鉄と鋼

    鉄と鋼 105 (2), 290-298, 2019

    一般社団法人 日本鉄鋼協会

被引用文献 (12)*注記

もっと見る

参考文献 (29)*注記

もっと見る

関連プロジェクト

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