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Direct atom probe tomography observations of concentration fluctuations in Fe-Cr solid solution
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Physical Metallurgy.ORCID iD: 0000-0003-3598-2465
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Physical Metallurgy.ORCID iD: 0000-0002-4521-6089
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Multiscale Materials Modelling.
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2015 (English)In: Scripta Materialia, ISSN 1359-6462, E-ISSN 1872-8456, Vol. 98, 13-15 p.Article in journal (Refereed) Published
Abstract [en]

The local concentration of atoms in an Fe-46.5 at.% Cr alloy, solution treated at four different temperatures above the miscibility gap, has been investigated using atom probe tomography. It is experimentally found that Cr atoms cluster in the solid solution and that the clustering tendency decreases with increasing temperature above the miscibility gap. These findings are corroborated by Monte Carlo simulations of the atomic short-range order, which show that clustering markedly decrease with increasing temperature from 800 to 1200 degrees C.

Place, publisher, year, edition, pages
2015. Vol. 98, 13-15 p.
Keyword [en]
Clustering, Spinodal decomposition, Stainless steels, Atom probe tomography, Fe-Cr
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-161091DOI: 10.1016/j.scriptamat.2014.10.035ISI: 000348965500004Scopus ID: 2-s2.0-84919363737OAI: oai:DiVA.org:kth-161091DiVA: diva2:797683
Funder
VINNOVACarl Tryggers foundation
Note

QC 20150324

Available from: 2015-03-24 Created: 2015-03-09 Last updated: 2017-12-04Bibliographically approved

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Odqvist, Joakim

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