書誌事項
- タイトル別名
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- Phase-field Analysis of Austenite-to-ferrite Transformation and Carbon Diffusion in Fe-C Alloy
- Phase fieldホウ ニ ヨル Fe C ゴウキン ノ ガンマ アルファ ヘンタイ ト タンソ カクサン キョドウ ノ ヒョウカ
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説明
Numerical simulations are performed to investigate the austenite-to-ferrite transformation in Fe-C alloy by employing a phase-field method, which can simultaneously simulate both interface migration and carbon diffusion without complex tracking of the interface position. The effects of transformation temperature and initial carbon concentration in austenite on the transformation behavior are investigated in detail as a one-dimensional problem. Simulation results show that the transformation kinetics varies between diffusion-controlled mode and interface-controlled mode depending on the temperature and carbon concentration. Therefore, the local equilibrium condition is not satisfied at the interface during the interface migration, while carbon concentration at the interface in austenite increases as the ferrite phase grows. Furthermore, we have evaluated the critical composition in which interface-controlled transformation occurs in the temperature range from 873 K to 673 K. It is clarified that the interface-controlled transformation cannot occur in the two phase region below 723 K.
収録刊行物
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- 日本機械学会論文集Ａ編
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日本機械学会論文集Ａ編 73 (726), 209-215, 2007
一般社団法人 日本機械学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001204479388288
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- NII論文ID
- 110006223920
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- NII書誌ID
- AN0018742X
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- COI
- 1:CAS:528:DC%2BD2sXltFWgtr8%3D
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- ISSN
- 18848338
- 03875008
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- NDL書誌ID
- 8724440
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
