Effect of electropulsing on the solidification of mould flux

Bhagurkar, Ashutosh G. and Qin, Rongshan (2022). Effect of electropulsing on the solidification of mould flux. Journal of Materials Research and Technology, 19 pp. 2146–2155.

DOI: https://doi.org/10.1016/j.jmrt.2022.05.188

Abstract

The effect of electropulsing on the microstructure formation in solidification of mould flux has been investigated. Experimental characterization and image analysis reveals that the electropulsing treatment reduces 46% porosity and increases the interfacial perimeter to area ratio by 100%. The latter provides strong evidence that electric current influences interfacial energy. Dendrite arm spacing is reduced considerable. Electropulsing promotes the anisotropic crystal growth and retards the formation of interconnected crystal network. The latter is favourable to the current flow, liquid refilling and lubrication. The work demonstrates that electropulsing can be used to modify the microstructure of slag and hence to control the horizontal heat transfer rate in the mould, which is desirable in continuous casting of advanced high strength steels.

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About

• Item ORO ID
• 83538
• Item Type
• Journal Item
• ISSN
• 2238-7854
• Project Funding Details

• Funded Project Name	Project ID	Funding Body
  Optimisation of Local Heat Transfer in the CC Mould for Casting Challenging and Innovative Steel – OPTILOCALHT	847269	European Commission RFCS
  UK Consortium on mesoscale engineering sciences - UKCOMES	EP/R029598/1	EPSRC

• Keywords
• Electropulsing; Mould flux; Solidification; Microstructure
• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Copyright Holders
• © 2022 The Authors
• Depositing User
• Rongshan Qin