Auinger, Michael, Praig, Vera G., Linder, Bernhard and Danninger, H. (Herbert) (2015) Grain boundary oxidation in iron-based alloys, investigated by 18O enriched water vapour : the effect of mixed oxides in binary and ternary Fe-{Al, Cr, Mn, Si} systems. Corrosion Science, 96 . pp. 133-143. doi:10.1016/j.corsci.2015.04.009 ISSN 0010-938X.

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Abstract

Selective oxidation experiments at 700C in binary and ternary iron-based model alloys containing Al, Cr, Mn, and Si were carried out. The internal oxidation behaviour along grain boundaries and inside ferrite grains was analyzed by LOM, SEM and ToF-SIMS. Oxygen isotope exchange revealed the location of fast diffusion pathways in the alloy. Numerical calculations of oxide distributions were compared to experimental findings, revealing that oxygen transport within ferrite grains is significantly lower than reported from literature. Discrepancies between simulations and experiments were discussed. The presented hypothesis of oxygen trapping represents an important viewpoint to explain internal oxidation in metallic alloys.

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH):	Steel -- Corrosion, Steel -- Oxidation
Journal or Publication Title:	Corrosion Science
Publisher:	Pergamon
ISSN:	0010-938X
Official Date:	July 2015
Dates:	Date Event July 2015 Published 20 April 2015 Available 4 April 2015 Accepted 30 October 2014 Submitted
Volume:	96
Page Range:	pp. 133-143
DOI:	10.1016/j.corsci.2015.04.009
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Date of first compliant deposit:	29 December 2015
Date of first compliant Open Access:	29 December 2015
Funder:	Christian Doppler Forschungsgesellschaft, VÖEST-Alpine (Firm)‏

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