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Finite element method simulation of mushy zone behavior during direct-chill casting of an Al-4.5 pct Cu alloy

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Abstract

In this article, the stresses, strains, sump depth, mushy zone length, and temperature fields are calculated through the simulation of the direct-chill (DC) casting process for a round billet by using a finite-element method (FEM). Focus is put on the mushy zone and solid region close to it. In the center of the billet, circumferential stresses and strains (which play a main role in hot cracking) are tensile close to the solidus temperature, whereas they are compressive near the surface of the billet. The stresses, strains, depth of sump, and length of mushy zone increase with increasing casting speed. They are maximum in the start-up phase and are reduced by applying a ramping procedure in the start-up phase. Stresses, strains, depth of sump, and length of mushy zone are highest in the center of the billet for all casting conditions considered.

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Authors and Affiliations

  1. the Department of Materials Science and Engineering, Delft University of Technology, 2628 AL, Delft, The Netherlands

    Suyitno (Ph. D. Student), W. H. Kool (Senior Scientist) & L. Katgerman (Professor)

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  1. Suyitno
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  2. W. H. Kool
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  3. L. Katgerman
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Suyitno, Kool, W.H. & Katgerman, L. Finite element method simulation of mushy zone behavior during direct-chill casting of an Al-4.5 pct Cu alloy. Metall Mater Trans A 35, 2917–2926 (2004). https://doi.org/10.1007/s11661-004-0239-9

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  • DOI: https://doi.org/10.1007/s11661-004-0239-9

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