On the Liquid Portion Composition Deviation in the RheoMetal Process

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Semisolid processing can provide an avenue to reduced rejection rates during casting and increased capability of thin-walled castings leading to improved resource efficiency and reduced climate impact. In the RheoMetalTM process, the slurry is formed far from equilibrium. A consequence to the deviation from equilibrium is that conventional guidelines for process stability may not give the correct appreciation of the process window, nor on the correct solid fractions generated. The solid fraction provides the slurry properties and its dependence on temperature should in theory provide the stable process window. This is discussed using data from literature and an alternative approach to identify the process stability window is given.

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Solid State Phenomena (Volume 348)

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55-60

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August 2023

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© 2023 Trans Tech Publications Ltd. All Rights Reserved

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[1] A. C. Serrenho, J. B. Norman, and J. M. Allwood, "The impact of reducing car weight on global emissions: the future fleet in Great Britain," Philos. Trans. R. Soc. A Math. Phys. Eng. Sci., vol. 375, no. 2095, p.20160364, 2017.

DOI: 10.1098/rsta.2016.0364

Google Scholar

[2] A. E. W. Jarfors, J. C. Zheng, L. Chen, and J. Yang, "Recent Advances in Commercial Application of the Rheometal Process in China and Europe," Solid State Phenom., vol. 285, p.405–410, 2019.

DOI: 10.4028/www.scientific.net/ssp.285.405

Google Scholar

[3] G. Li, M. Luo, W. Y. Qu, H. X. Lu, X. G. Hu, and Q. Zhu, "Progress of Semi-Solid Processing of Alloys and Composites in China," Solid State Phenom., vol. 327, p.178–188, 2022.

DOI: 10.4028/www.scientific.net/ssp.327.178

Google Scholar

[4] J. Campbell, Complete Casting Handbook Metal Casting Processes, Metallurgy, Techniques and Design, 2nd ed. Butterworth-Heinemann, 2015.

Google Scholar

[5] A. E. W. Jarfors and S. Seifeddine, Metal casting. 2015.

Google Scholar

[6] M. Payandeh, A. E. W. Jarfors, and M. Wessén, "Solidification Sequence and Evolution of Microstructure During Rheocasting of Four Al-Si-Mg-Fe Alloys with Low Si Content," Metall. Mater. Trans. A Phys. Metall. Mater. Sci., vol. 47, no. 3, p.1215–1228, 2015.

DOI: 10.1007/s11661-015-3290-9

Google Scholar

[7] J. Santos, L. H. Kallien, A. E. W. Jarfors, and A. K. Dahle, "Influence of Grain Refinement on Slurry Formation and Surface Segregation in Semi-solid Al-7Si-0.3Mg Castings," Metall. Mater. Trans. A Phys. Metall. Mater. Sci., vol. 49, no. 10, p.4871–4883, 2018.

DOI: 10.1007/s11661-018-4787-9

Google Scholar

[8] M. Payandeh, A. E. W. Jarfors, and M. Wessén, "Effect of Superheat on Melting Rate of EEM of Al Alloys during Stirring Using the RheoMetal Process," Solid State Phenom., vol. 192–193, p.392–397, 2012.

DOI: 10.4028/www.scientific.net/SSP.192-193.392

Google Scholar

[9] M. Payandeh, M. H. Sabzevar, A. E. W. Jarfors, and M. Wessén, "Solidification and Re-melting Phenomena During Slurry Preparation Using the RheoMetalTM Process," Metall. Mater. Trans. B Process Metall. Mater. Process. Sci., vol. 48, no. 6, p.2836–2848, 2017.

DOI: 10.1007/s11663-017-1061-2

Google Scholar