Evaluation of Crystal Multiplication at Mold Wall during Solidification of Casting

• Akagiri Tomohiro

  Mitsubishi Heavy Industries, Ltd.

• Natsume Yukinobu

  Kobe Steel Ltd.

• Ohsasa Kenichi

  Graduate School of Engineering, Hokkaido University

• Matsuura Kiyotaka

  Graduate School of Engineering, Hokkaido University

抄録

The effect of crystal multiplication at the mold wall during casting process, so-called “Big Bang” phenomenon, on the macrostructure of Al–Si alloy was examined. Conventional casting experiments were carried out and the degree of the crystal multiplication at the mold wall was evaluated by simulating the macrostructures similar to the experimentally observed ones using a cellular automaton method. The degree of the crystal multiplication decreased with increase in superheat of the molten alloy at the pouring. The reason of this can be attributed to the remelting of suspended crystals formed due to the crystal multiplication by superheated melt.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 48 (3), 355-361, 2008

  一般社団法人 日本鉄鋼協会

キーワード

• crystal multiplication
• Big Bang
• Al–Si alloy
• cellular automaton method
• numerical simulation
• macrostructure of casting

詳細情報

• CRID: 1390282681465924096
• NII論文ID: 10027027714
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.48.355
• ISSN: 13475460
• ISSN: 09151559
• Web Site: https://www.jstage.jst.go.jp/article/isijinternational/48/3/48_3_355/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可