Influence of supersaturated carbon on the diffusion of Ni in ferrite determined by atom probe tomography

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In patented and cold-drawn pearlitic steel wires dissociation of cementite occurs during mechanical deformation. In this study the influence of the carbon decomposition on the diffusion of nickel in ferrite is investigated by means of atom probe tomography. In the temperature range 423-523 K we observed a much smaller activation energy of Ni diffusion than for self-diffusion in body-centered cubic iron, indicating an increased vacancy density owing to enhanced formation of vacancy carbon complexes. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2013-09
Language
English
Article Type
Article
Keywords

PEARLITIC STEEL WIRE; VACANCY FORMATION ENERGIES; REDUCING GRAIN-BOUNDARY; ALPHA-IRON; SELF-DIFFUSION; ELECTRON-IRRADIATION; SOLUTE SEGREGATION; DISLOCATION LINE; C ALLOYS; MICROSTRUCTURE

Citation

SCRIPTA MATERIALIA, v.69, no.5, pp.424 - 427

ISSN
1359-6462
DOI
10.1016/j.scriptamat.2013.05.039
URI
http://hdl.handle.net/10203/207052
Appears in Collection
MS-Journal Papers(저널논문)
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