Direct atom probe tomography observations of concentration fluctuations in Fe-Cr solid solution

Jing Zhou, Joakim Odqvist, John Ågren, Andrei Ruban, Mattias Thuvander, Wei Xiong, Gregory B. Olson, Peter Hedström*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

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 °C.

Original languageEnglish (US)
Pages (from-to)13-15
Number of pages3
JournalScripta Materialia
Volume98
DOIs
StatePublished - Mar 15 2015

Keywords

  • Atom probe tomography
  • Clustering
  • Fe-Cr
  • Spinodal decomposition
  • Stainless steels

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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