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

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概要

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• 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.

• 社団法人 日本鉄鋼協会の論文
• 1997-11-15

著者

• Suzuki Toshio

  School of Eng., The Univ. ofTokyo,

• Jimbo Itaru

  Faculty Of Engineering Tokai University

• Fujino Hiroaki

  The University Of Tokyo.

• Suzuki Toshio

  School Of Engineering The University Of Tokyo

関連論文

• Large scale simulation of dendritic growth in pure undercooled meltby phase-field model
• Numerical simulation of interface shape around an insoluble particlefor Fe-C alloys using a phase-field model
• A Numerical Model for Cooling Rate Dependence of the Degree of Undercooling during Rapid Solidification of 18Cr-8Ni Stainless Steel

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