CDS Method for Casting Aluminium-Based Wrought Alloy Compositions: Theoretical Framework

Diran Apelian; Makhlouf M. Makhlouf; D. Saha

doi:10.4028/www.scientific.net/MSF.519-521.1771

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The Impact of Partial Drainage on Chemical Composition of 356 Al-Si Alloy
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CDS Method for Casting Aluminium-Based Wrought Alloy Compositions: Theoretical Framework
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A Validated Through Process Model to Predict the Fatigue Life of a Cast A356 Automotive Wheel
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Industrial Application of Through-Process Modelling I: Microstructural Descriptors Required from the Casting Model for Downstream Process Stages
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Effects of Solidification Range on the Structure of Aluminium Alloys Obtained under Conditions of Constant Melt Flow
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The Influence of Fluid Flow on Intermetallic Phases in Al-Cast Alloys
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HomeMaterials Science ForumMaterials Science Forum Vols. 519-521CDS Method for Casting Aluminium-Based Wrought...

CDS Method for Casting Aluminium-Based Wrought Alloy Compositions: Theoretical Framework

Abstract:

A novel process named Controlled Diffusion Solidification (CDS) has been developed to circumvent problems that are typically associated with casting wrought aluminum alloy compositions into near net shaped components. The process involves bringing two precursor alloys of precisely controlled composition, temperature, and quantity into intimate contact, and then casting the resultant alloy using a conventional casting process to yield a component of predetermined composition with a microstructure that is similar to that of semi-solid processed alloys. Describing the many interactions that occur during solidification of aluminum alloys in a consistent manner is virtually impossible without the use of computational tools that are based on thermodynamic models. In this paper, we describe how the CALPHAD method, which allows calculating all the necessary data from thermodynamic model parameters, was used along with theoretical calculations and empirical rules to allow describing the Gibbs free energy of each phase in the alloy system and yield quantitative data that guided the development and optimization of the CDS method.

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Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

1771-1776

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.1771

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Online since:

July 2006

Authors:

Diran Apelian, Makhlouf M. Makhlouf, D. Saha

Keywords:

Aluminium Alloy, Casting, Controlled Diffusion Solidification, Wrought Alloy

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References

[1] D. Saha, S. Shankar, D. Apelian, and M.M. Makhlouf, Metall. and Mater. Trans., vol. 35A (2004), p.2174.

Google Scholar

[2] D. Saha, S. Shankar, D. Apelian, and M.M. Makhlouf, Proceedings of Shape Casting - The John Campbell Symposium, P. Crepeau and M. Tiryakioglu eds., TMS International, Warrendale, PA, (2005), p.415.

Google Scholar

[3] D.R. Gaskell: Introduction to the Thermodynamics of Materials (Taylor and Francis, London, England 1995).

Google Scholar

[4] L. Kaufman and H. Bernstein: Computer Calculation of Phase Diagrams (Academic Press, New York 1970).

Google Scholar

[5] E. Cini, B. Vinet and P.J. Desre, Philosophical Magazine, vol. 80 (2000), p.955.

Google Scholar

[6] S. Das and Z. Fan, Acta Materialia, vol. 50 (2002), p.4571.

Google Scholar

[7] W. Shusen, W. Xueping, and X. Zehui, Acta Materialia, vol. 52 (2004), p.3519.

Google Scholar