Direct atom probe tomography observations of concentration fluctuations in Fe-Cr solid solution
Journal article, 2015

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.



Spinodal decomposition

Stainless steels

Atom probe tomography


J. Zhou

Royal Institute of Technology (KTH)

J. Odqvist

Royal Institute of Technology (KTH)

J. Agren

Royal Institute of Technology (KTH)

A. Ruban

Royal Institute of Technology (KTH)

Mattias Thuvander

Chalmers, Applied Physics, Materials Microstructure

W. Xiong

Northwestern University

G. B. Olson

Northwestern University

P. Hedstrom

Royal Institute of Technology (KTH)

Scripta Materialia

1359-6462 (ISSN)

Vol. 98 13-15

Subject Categories

Metallurgy and Metallic Materials



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