Direct atom probe tomography observations of concentration fluctuations in Fe-Cr solid solution
Artikel i vetenskaplig tidskrift, 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.

Fe-Cr

Clustering

Spinodal decomposition

Stainless steels

Atom probe tomography

Författare

J. Zhou

Kungliga Tekniska Högskolan (KTH)

J. Odqvist

Kungliga Tekniska Högskolan (KTH)

J. Agren

Kungliga Tekniska Högskolan (KTH)

A. Ruban

Kungliga Tekniska Högskolan (KTH)

Mattias Thuvander

Chalmers, Teknisk fysik, Materialens mikrostruktur

W. Xiong

Northwestern University

G. B. Olson

Northwestern University

P. Hedstrom

Kungliga Tekniska Högskolan (KTH)

Scripta Materialia

1359-6462 (ISSN)

Vol. 98 13-15

Ämneskategorier

Metallurgi och metalliska material

DOI

10.1016/j.scriptamat.2014.10.035