Influence of recrystallization on phase separation kinetics of oxide dispersion strengthened Fe Cr Al alloy

Journal Article · Sun Jan 01 00:00:00 EST 2012 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2011.11.003· OSTI ID:1032472

Capdevila, C. ^[1]; Miller, Michael K ^[2]; Pimentel, G. ^[1]; Chao, J. ^[1]

---

1. CENIM-CSIC, Madrid, Spain
2. ORNL

The effect of different starting microstructures on the kinetics of Fe-rich ({alpha}) and Cr-rich ({alpha}') phase separation during aging of Fe-Cr-Al oxide dispersion strengthened (ODS) alloys has been analyzed with a combination of atom probe tomography and thermoelectric power measurements. The results revealed that the high recrystallization temperature necessary to produce a coarse grained microstructure in Fe-base ODS alloys affects the randomness of Cr-atom distributions and defect density, which consequently affect the phase separation kinetics at low annealing temperatures.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1032472
• Journal Information: Scripta Materialia, Vol. 66, Issue 5; ISSN 1359-6462
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
ALLOYS
ANNEALING
ATOMS
DEFECTS
KINETICS
MICROSTRUCTURE
OXIDES
PROBES
RANDOMNESS
RECRYSTALLIZATION
TOMOGRAPHY