易切削鋼9SMn28凝固過程的CAFE法模擬

王金龍; 王福明; 李長榮; 張炯明

doi:10.13374/j.issn1001-053x.2010.03.009

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驗證碼

易切削鋼9SMn28凝固過程的CAFE法模擬

doi: 10.13374/j.issn1001-053x.2010.03.009

1. 北京科技大學冶金與生態工程學院, 北京 100083;
2. 內蒙古農業大學食品科學與工程學院, 呼和浩特 010018;
3. 北京科技大學材料科學與工程學院, 北京 100083

基金項目:

北京市教育委員會共建項目

國家自然科學基金資助項目(No.50874007)

詳細信息

作者簡介:
王金龍(1978-),男,講師,博士研究生;王福明(1963-),男,教授,博士,E-mail:wangfuming@metall.ustb.edu.cn

中圖分類號: TG142.1
計量
- 文章訪問數: 198
- HTML全文瀏覽量: 60
- PDF下載量: 6
- 被引次數: 0
出版歷程
- 收稿日期: 2009-06-17

Simulation of solidification processes of 9SMn28 free-cutting steel based on a CAFE Method

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Food Science and Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China;
3. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 為了耦合縮孔和疏松模擬凝固過程三維微觀組織,對元胞自動機-有限元(CAFE)法的物理本質和數值計算方法進行了分析,采用CAFE法對易切削鋼9SMn28鑄件進行了凝固過程、縮孔和疏松及三維微觀組織的模擬.模擬結果表明:在空冷條件下,鑄件表層的凝固是在連續降溫過程中進行的,內部是先等溫凝固,后降溫凝固;縮孔和疏松模擬結果與實際鑄件的基本相符;實現了9SMn28合金三維微觀組織的模擬,模擬結果與實驗吻合較好.
- 易切削鋼 /
- 凝固過程 /
- 微觀組織 /
- 數值模擬
Abstract: In order to simulate 3D microstructures during solidification with porosity,the physical essence and numerical calculation principles of the finite element-cellular automaton (CAFE) method were analyzed.Then,the CAFE method was used to simulate the solidification processes,porosity,and 3D microstructure of 9SMn28 free-cutting steel castings.It is shown that under the condition of air cooling,the solidification of casting surface layers occurs in the process of continuous cooling,but in the casting interiors there exist firstly isothermal solidification and then cooling solidification.The simulation result of porosity is basically identical with experimental castings.The 3D microstructure of 9SMn28 free-cutting steel can be simulated by the CAFE due to its agreement with experimental results.
- free-cutting steel /
- solidification process /
- microstructure /
- numerical simulation