Journal
SCRIPTA MATERIALIA
Volume 154, Issue -, Pages 25-29Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.05.014
Keywords
Complexions; Dislocations; Segregation; Precipitation
Categories
Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Materials Science and Engineering Division [DE-SC0014232]
- U.S. Department of Energy (DOE) [DE-SC0014232] Funding Source: U.S. Department of Energy (DOE)
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Atomistic simulations are used to study linear complexion formation at dislocations in a body-centered cubic Fe-Ni alloy. Driven by Ni segregation, precipitation of the metastable B2-FeNi and stable L1(0)-FeNi phases occurs along the compression side of edge dislocations. If the Ni segregation is not intense enough to ensure precipitate growth and coalescence along the dislocation lines, linear complexions in the form of stable nanoscale precipitate arrays are observed. Critical conditions such as global composition and temperature are defined for both linear complexion formation and dislocation-assisted precipitation. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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