Journal of Materials Science

, Volume 43, Issue 11, pp 3889–3893 | Cite as

Aluminum partitioning during phase separation in Fe–20%Cr–6%Al ODS alloy

Intergranular and Interphase Boundaries in Materials


Phase separation in a commercial Fe–20 wt.%Cr–6%Al oxide dispersion-strengthened PM 2000 steel has been characterized with a local-electrode atom probe after isothermal aging at 708 K and 748 K for times up to 3,600 h. A progressing decrease in the Al content of the Cr-rich α′ phase was observed with time at both aging temperatures. The Al partitioning trend was consistent with theoretical calculations. However, the experimentally observed Al partitioning factor was significantly lower than the predicted equilibrium value. A ∼10 nm diameter, roughly spherical, Al- and Ti-enriched β′ Fe(AlTi) phase was also observed.


Atom Probe Creep Strength Isothermal Aging Oxide Dispersion Strengthened Atom Probe Tomography 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors acknowledge financial support from the Spanish Ministerio de Educación y Ciencia in the form of a Coordinate Project in the Energy Area of Plan Nacional 2006 (ENE2006-15170-C02). Research at the Oak Ridge National Laboratory SHaRE User Facility was sponsored by Basic Energy Sciences, US Department of Energy. PM 2000™ is a trademark of Plansee SE.


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Centro Nacional de Investigaciones Metalúrgicas (CENIM), Consejo Superior de Investigaciones Científicas (CSIC)MadridSpain
  2. 2.Materials Science and Technology DivisionOak Ridge National LaboratoryOak RidgeUSA

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