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Solidification of Al alloys under electromagnetic pulses and characterization of the 3D microstructures under synchrotron x-ray tomography

Manuwong, Theerapatt; Zhang, Wei; Kazinczi, Peter Lobo; Bodey, Andrew J.; Rau, Christoph; Mi, Jiawei

Authors

Theerapatt Manuwong

Wei Zhang

Peter Lobo Kazinczi

Andrew J. Bodey

Christoph Rau



Abstract

A novel programmable electromagnetic pulse device was developed and used to study the solidification of Al-15 pct Cu and Al-35 pct Cu alloys. The pulsed magnetic fluxes and Lorentz forces generated inside the solidifying melts were simulated using finite element methods, and their effects on the solidification microstructures were characterized using electron microscopy and synchrotron X-ray tomography. Using a discharging voltage of 120 V, a pulsed magnetic field with the peak Lorentz force of ~1.6 N was generated inside the solidifying Al-Cu melts which were showed sufficiently enough to disrupt the growth of the primary Al dendrites and the Al2Cu intermetallic phases. The microstructures exhibit a strong correlation to the characteristics of the applied pulse, forming a periodical pattern that resonates the frequency of the applied electromagnetic field.

Publication Date Jul 26, 2015
Journal Metallurgical and materials transactions a
Print ISSN 1073-5623
Electronic ISSN 1543-1940
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 46
Issue 7
Pages 2908-2915
APA6 Citation Manuwong, T., Zhang, W., Kazinczi, P. L., Bodey, A. J., Rau, C., & Mi, J. (2015). Solidification of Al alloys under electromagnetic pulses and characterization of the 3D microstructures under synchrotron x-ray tomography. Metallurgical and materials transactions. A, Physical metallurgy and materials science, 46(7), 2908-2915. https://doi.org/10.1007/s11661-015-2874-8
DOI https://doi.org/10.1007/s11661-015-2874-8
Keywords Synchrotron x-ray; Tomography; Electro-magnetic pulse; Solidification; Al alloys
Publisher URL http://link.springer.com/article/10.1007%2Fs11661-015-2874-8
Copyright Statement ©2016 University of Hull
Additional Information This is an authors accepted manuscript of an article published in Metallurgical and materials transactions a, 2015, v.46 issue 7. The final publication is available at Springer via http://dx.doi.org/10.1007/s11661-015-2874-8.

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