Journal
SCRIPTA MATERIALIA
Volume 68, Issue 1, Pages 55-58Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.09.027
Keywords
Steels; Niobium; Precipitation; Scanning transmission electron microscopy; Atom probe tomography
Categories
Funding
- Oak Ridge National Laboratory's Shared Research Equipment (ShaRE) User Program
- Office of Basic Energy Sciences, U.S. Department of Energy
- IMI Program of the National Science Foundation [DMR 0843934]
- Advanced Steel Processing and Products Research Center at the Colorado School of Mines
- Direct For Mathematical & Physical Scien [0843934] Funding Source: National Science Foundation
- Division Of Materials Research [0843934] Funding Source: National Science Foundation
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Molybdenum is known to affect microalloy precipitate evolution during processing in ferrite and austenite, but a unified explanation of the role of Mo in precipitate evolution is still lacking. Experiments and thermodynamic calculations indicate that Mo is incorporated into (Nb,Mo)(C,N) precipitates both in the hot-rolled condition and after reheating to 900 degrees C. Molybdenum enrichment is reduced after reheating and soaking at 1100 degrees C. No measurable segregation of Mo to the carbonitride-matrix interface was observed in any condition. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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