Paper Title:
Numerical Study of the Thermosolutal Convection Induced Macrosegregation during Columnar Solidification
  Abstract

As a response to “call for contribution to a numerical problem for 2D columnar solidification of binary alloys” [Bellet et al., Int. J. Therm. Sci., Vol. 48(11)(2009), p. 2013], the macrosegregation in a Pb-18wt.%Sn benchmark casting is numerically studied with a two-phase columnar solidification model developed by the current authors. The studies were done with 2D calculations in response to the call, and a 3D calculation was performed to confirm the consistency with the 2D case. A grid-sensitivity study was done to ensure the reliability and accuracy of the present results. The segregation mechanism due to thermosolutal convection was analyzed and the uncertainties resulting from the inaccurate thermophysical properties, modelling and process parameters are discussed. The numerical model was evaluated by comparison with experiments.

  Info
Periodical
Advanced Materials Research (Volumes 154-155)
Edited by
Zhengyi Jiang, Xianghua Liu and Jinglong Bu
Pages
1415-1418
DOI
10.4028/www.scientific.net/AMR.154-155.1415
Citation
J. Hao, M. H. Wu, A. Ludwig, M. Grasser, "Numerical Study of the Thermosolutal Convection Induced Macrosegregation during Columnar Solidification", Advanced Materials Research, Vols. 154-155, pp. 1415-1418, 2011
Online since
October 2010
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$32.00
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