A Numerical Model for Cooling Rate Dependence of the Degree of Undercooling during Rapid Solidification of 18Cr-8Ni Stainless Steel.

• Fujino Hiroaki

  Graduate Student, The University of Tokyo

• Suzuki Toshio

  School of Engineering, The University of Tokyo

• Jimbo Itaru

  Faculty of Engineering, Tokai University

抄録

Cooling rate dependence of the degree of undercooling at the onset of solidification for 18Cr-8Ni stainless steel was numerically analyzed using a classical nucleation theory. Transient time which can characterize the time-dependent behavior of nucleation was evaluated for iron. It is shown that temperature change in the experiment is slow enough against the transient time and no time-dependent behavior can be expected within the predictions by the classical theory. A new model for time-dependent contact angle was proposed so as to reproduce the cooling rate dependence of the degree of undercooling. This prediction model shows a good agreement with the experimental result for 18Cr-8Ni stainless steel. The effect of substrate temperature on the degree of undercooling and the primary nucleation phase of 18Cr-8Ni stainless steel was also discussed using the model.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 37 (11), 1107-1111, 1997

  一般社団法人 日本鉄鋼協会

キーワード

• classical nucleation theory
• cooling rate
• the degree of undercooling
• contact angle
• iron
• 18Cr-8Ni stainless steel

詳細情報

• CRID: 1390001206451415552
• NII論文ID: 10002457536
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.37.1107
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/37/11/37_11_1107/_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