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

T. Kresse, Yujiao Li, Torben Boll, Christine Borchers, Pyuckpa Choi, Tala'at Al-Kassab, Dierk Raabe, Reiner Kirchheim

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

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. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Original languageEnglish (US)
Pages (from-to)424-427
Number of pages4
JournalScripta Materialia
Volume69
Issue number5
DOIs
StatePublished - Sep 2013

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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