Loughborough University

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The effect of surface preparation on surface damage and sigma formation in duplex stainless steel

journal contribution
posted on 2018-07-16, 09:54 authored by Rebecca HigginsonRebecca Higginson, Michael Cenci, Matthew Rowlett, Vladislav Kornienko, Mark JepsonMark Jepson
Sigma formation in duplex stainless steels is known to be detrimental to the mechanical properties of the material and limits the alloys to low temperature applications. In this paper, the surface damage caused by grinding on different grit sizes or polishing, is assessed using EBSD. The surface finish is then related to the depth of sigma formation in the surface region with a quantification of how the surface finish effects the sigma nucleation and growth. Finally, the effect of surface finish and sigma formation on the oxidation characteristics of the material is considered.



  • Aeronautical, Automotive, Chemical and Materials Engineering


  • Materials

Published in

Journal of Materials Science Forum


HIGGINSON, R.L. ...et al., 2018. The effect of surface preparation on surface damage and sigma formation in duplex stainless steel. Materials Science Forum, 941, pp.432-437.


Trans Tech Publications (TTP)


  • AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date


Publication date



This paper was presented at THERMEC 2018: International Conference on Processing and Manufacturing of Advanced Materials; Processing, Fabrication, Properties, Applications, Paris, July 8-13th. It is in closed access.




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