Modeling of Species Transport and Macrosegregation in Heavy Steel Ingots

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• 作者：Wensheng Li (1) (2)
  Houfa Shen (3)
  Xiong Zhang (1) (4)
  Baicheng Liu (3)
  
• 刊名：Metallurgical and Materials Transactions B
• 出版年：2014
• 出版时间：April 2014
• 年：2014
• 卷：45
• 期：2
• 页码：464-471
• 全文大小：1,426 KB
• 参考文献：1. B.C. Liu, Q.Y. Xu, T. Jing, H.F. Shen, and Z.Q. Han: / JOM, 2011, vol. 63, pp. 19-5. CrossRef
  2. Y. Tanaka and I. Sato: / J. Nucl. Mater., 2011, vol. 417, pp. 854-9. CrossRef
  3. M.C. Flemings: / ISIJ Int., 2000, vol. 40, pp. 833-1. CrossRef
  4. C. Beckermann: / Int. Mater. Rev., 2002, vol. 47, pp. 243-1. CrossRef
  5. G. Lesoult: / Mater. Sci. Eng. A, 2005, vols. 413-14A, pp. 19-9.
  6. J. Ni and C. Beckermann: / Metall. Trans. B, 1991, vol. 22B, pp. 349-1. CrossRef
  7. C.Y. Wang and C. Beckermann: / Metall. Mater. Trans. A, 1996, vol. 27A, pp. 2754-4. CrossRef
  8. M. Wu and A. Ludwig: / Metall. Mater. Trans. A, 2006, vol. 37A, pp. 1613-1. CrossRef
  9. M. Wu and A. Ludwig: / Metall. Mater. Trans. A, 2007, vol. 38A, pp. 1465-5. CrossRef
  10. M. Wu and A. Ludwig: / Acta Mater., 2009, vol. 57, pp. 5621-1. CrossRef
  11. M. Wu, A. Fjeld, and A. Ludwig: / Comput. Mater. Sci., 2010, vol. 50, pp. 32-2. CrossRef
  12. H. Combeau, M. Zaloznik, S. Hans, and P.E. Richy: / Metall. Mater. Trans. B, 2009, vol. 40B, pp. 289-04. CrossRef
  13. M. Zaloznik and H. Combeau: in / Modeling of Casting, Welding and Advanced Solidification Processes-em class="a-plus-plus">XII, S.L. Cockroft and D.M. Maijer, eds., TMS, Warrendale, PA, 2009, pp. 165-2.
  14. H. Combeau, A. Kumar, and M. Zaloznik: / Trans. Indian Inst. Met., 2009, vol. 62, pp. 285-0. CrossRef
  15. A.Kumar, M. Zaloznik, and H. Combeau: / Int. J. Adv. Eng. Sci. Appl. Math., 2010, vol. 2, pp. 140-8.
  16. H. Combeau, A. Kumar, M. Zaloznik, I. Poitrault, G. Lacagne, A. Gingell, T. Mazet, and G. Lesoult: in / 1st International Conference on Ingot Casting, Rolling and Forging, Aachen, Germany, 2012.
  17. X. Zhang: Master’s Thesis, Tsinghua University, Beijing, P.R. China, 2012.
  18. W.S. Li, H.F. Shen, and B.C. Liu: / Int. J. Miner. Metall. Mater., 2012, vol. 19, pp. 787-4. CrossRef
  19. W.S. Li: Ph.D. Thesis, Tsinghua University, Beijing, P.R. China, 2012.
  20. W.S. Li, B.Z. Shen, H.F. Shen, and B.C. Liu: / IOP Conf. Ser.: Mater. Sci. Eng., 2012, vol. 33, p. 012090.
  21. W.S. Li, H.F. Shen, and B.C. Liu: / Steel Res. Int., 2010, vol. 81, pp. 994-000. CrossRef
  22. M. Zaloznik and H. Combeau: / Int. J. Therm. Sci., 2010, vol. 49, pp. 1500-9. CrossRef
  23. J. Li, M. Wu, J. Hao, A. Kharicha, and A. Ludwig: / Comput. Mater. Sci., 2012, vol. 55, pp. 419-9. CrossRef
  
• 作者单位：Wensheng Li (1) (2)
  Houfa Shen (3)
  Xiong Zhang (1) (4)
  Baicheng Liu (3)
  
  1. Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China
  2. Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhou, 510080, People’s Republic of China
  3. School of Materials Science and Engineering, Tsinghua University, Beijing, People’s Republic of China
  4. Sinotrans Ltd., Beijing, 100044, People’s Republic of China
  
• ISSN：1543-1916

文摘

In the current study, two significant phenomena involved in heavy steel ingot casting, i.e., species transport and macrosegregation, were numerically simulated. First, a ladle–tundish–mold species transport model describing the entire multiple pouring process of heavy steel ingots was proposed. Carbon distribution and variation in both the tundish and the mold of a 292-ton steel ingot were predicted. Results indicate high carbon concentration in the bottom of the mold while low concentration carbon at the top of mold after the pouring process. Such concentration distribution helps in reducing both negative segregation in the bottom of the solidified ingot and positive segregation at the top. Second, a two-phase multiscale macrosegregation model was used to simulate the solidification process of industrial steel ingots. This model takes into account heat transfer, fluid flow, solute transport, and equiaxed grain motion on a system scale, as well as grain nucleation and growth on a microscopic scale. The model was first used to analyze a three-dimensional industry-scale steel ingot as a benchmark. Then, it was applied to study macrosegregation formation in a 53-ton steel ingot. Macrosegregation predicted by the numerical model was presented and compared with experimental measurements. Typical macrosegregation patterns in heavy steel ingots are found to be well reproduced with the two-phase model.