Abstract
The objective of this work is to investigate the effects of electromagnetic external fields on the spatial distribution of alloying elements and the mechanical properties of Al-Mg-Si alloy prepared using twin-roll casting. The formation mechanism of macro/microsegregation and mechanical properties were examined, and the results indicated that the amount of centerline segregation defects was significantly reduced with the application of an external field. When a pulsed electric field and static magnetic field were applied simultaneously, the distribution of alloying elements in the thickness direction of the twin-roll cast sheet was the most uniform and the segregation was obviously suppressed. By virtue of the Lorentz force, the content of alloying elements in the matrix clearly increased, suggesting that such application of external fields can reduce segregation defects and improve the uniformity of the spatial distribution of alloying elements, ultimately improving the overall mechanical properties of AA6022 aluminum alloy.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant No. 51790485). We would like to thank Natasha Lundin, PhD, from Liwen Bianji, Edanz Editing China (www.liwenbianji.cn/ac), for editing the English text of a draft of this manuscript.
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He, C., Li, S.J., Li, Y. et al. Improvement of Spatial Inhomogeneity of Solute Elements and Mechanical Properties of Twin-Roll Cast Al-Mg-Si Alloy in Presence of Electromagnetic Fields. JOM 72, 3634–3644 (2020). https://doi.org/10.1007/s11837-020-04266-6
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DOI: https://doi.org/10.1007/s11837-020-04266-6