Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 724, Issue -, Pages 1143-1148Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.07.096
Keywords
Dual phase; Atom probe tomography; Boron and carbon segregation; Dislocation
Categories
Funding
- National Association of Research and Technology (ANRT) [485-2014]
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A dual phase micro-alloyed steel was investigated by atom probe tomography (APT) highlighting boron and carbon co-segregation at dislocations in ferrite and martensite phases. Segregation levels were measured by an original method allowing quantification of the solute excess numbers associated to a dislocation. Applying this method to our APT results, it was observed that the segregation level of boron is higher in martensite than in ferrite. In the martensitic phase, 30% of all boron atoms in the analyzed volume are segregated to the dislocation. (C) 2017 Elsevier B.V. All rights reserved.
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