The Open UniversitySkip to content
 

Using electric current to surpass the microstructure breakup limit

Qin, Rongshan (2017). Using electric current to surpass the microstructure breakup limit. Scientific Reports, 7, article no. 41451.

Full text available as:
[img] PDF (Version of Record) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview
DOI (Digital Object Identifier) Link: https://doi.org/10.1038/srep41451
Google Scholar: Look up in Google Scholar

Abstract

The elongated droplets and grains can break up into smaller ones. This process is driven by the interfacial free energy minimization, which gives rise to a breakup limit. We demonstrated in this work that the breakup limit can be overpassed drastically by using electric current to interfere. Electric current free energy is dependent on the microstructure configuration. The breakup causes the electric current free energy to reduce in some cases. This compensates the increment of interfacial free energy during breaking up and enables the processing to achieve finer microstructure. With engineering practical electric current parameters, our calculation revealed a significant increment of the obtainable number of particles, showing electric current a powerful microstructure refinement technology. The calculation is validated by our experiments on the breakup of Fe3C-plates in Fe matrix. Furthermore, there is a parameter range that electric current can drive spherical particles to split into smaller ones.

Item Type: Journal Item
Copyright Holders: 2017 The Authors
ISSN: 2045-2322
Project Funding Details:
Funded Project NameProject IDFunding Body
A novel electropulse-based clean steel green processing methodEP/J011460/2 EPSRC
UK Consortium on mesoscale engineering sciences - UKCOMESEP/L00030X/1EPSRC
Electropulse-induced microstructure and property evolution in pearlitic steel1322018TATA Steel
Newton Advanced Fellowship : Study of the electropulse-based superclean steel green processing methodNA150320The Royal Society
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 48273
Depositing User: Rongshan Qin
Date Deposited: 25 Jan 2017 11:56
Last Modified: 17 May 2017 22:55
URI: http://oro.open.ac.uk/id/eprint/48273
Share this page:

Altmetrics

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   + 44 (0)870 333 4340   general-enquiries@open.ac.uk