Observations of copper clustering in a 25Cr-7Ni super duplex stainless steel during low-temperature aging under load
Artikel i vetenskaplig tidskrift, 2012

Atom-probe tomography was used to investigate phase separation and copper (Cu) clustering in the ferrite phase of a 25Cr-7Ni super duplex stainless steel. The steel was subjected to a tensile load during aging at 325 degrees C for 5800 h. The degree of phase separation into alpha (Fe-rich) and alpha' (Cr-rich) was small, but still, it was the highest in the steel subjected to the highest load. Cu was found to cluster, and the number density of clusters increased with increasing load. In the material subjected to the highest load, Cu was enriched in regions that were neither Fe-rich nor Cr-rich. These regions also had the highest number density of Cu clusters.

growth

clusters

field

duplex

phase decomposition

steels

nucleation

electron-microscopy

3DAP

decomposition

stainless steels

atom-probe

precipitation

alloys

copper

Författare

Mattias Thuvander

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Chalmers, Teknisk fysik, Materialens mikrostruktur

J. Zhou

Kungliga Tekniska Högskolan (KTH)

J. Odqvist

Sandvik Materials Technology

Kungliga Tekniska Högskolan (KTH)

S. Hertzman

Outokumpu Stainless Research Foundation

Kungliga Tekniska Högskolan (KTH)

P. Hedstrom

Kungliga Tekniska Högskolan (KTH)

Philosophical Magazine Letters

0950-0839 (ISSN) 1362-3036 (eISSN)

Vol. 92 336-343

Ämneskategorier

Fysik

DOI

10.1080/09500839.2012.672773