University of Oulu

Ohligschläger, T., Kömi, J., Porter, D. (2019) Sensitization and Self-healing in Austenitic Stainless Steel: Quantitative Prediction Considering Carbide Nucleation and Growth. ISIJ International, Vol. 59, No. 11, pp. 2090–2097.

Sensitization and self-healing in austenitic stainless steel : quantitative prediction considering carbide nucleation and growth

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Author: Kolli, Satish1; Ohlingschläger, Thomas; Kömi, Jukka1;
Organizations: 1Materials and Mechanical Engineering, Center for Advanced Steel Research, University of Oulu, Oulu, 90014 Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.2 MB)
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Language: English
Published: Iron and Steel Institute of Japan, 2019
Publish Date: 2019-11-19


Abstract The degree of sensitization in an austenitic stainless steel, has been measured using double loop electrochemical reactivation tests, and the measured values compared with predictions based on grain boundary chromium depletion characteristics obtained using the precipitation and diffusion modules of Thermo-Calc. In order to quantitatively predict Cr depletion, the precipitation of M23C6 carbides that are responsible for sensitization has been modelled for isothermal conditions by treating nucleation and growth separately. Based on a critical chromium concentration, a depletion parameter that predicts both sensitization and self-healing is given.

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Series: ISIJ international
ISSN: 0915-1559
ISSN-E: 1347-5460
ISSN-L: 0915-1559
Volume: 59
Issue: 11
Pages: 2090 - 2097
DOI: 10.2355/isijinternational.ISIJINT-2019-264
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 675715.
EU Grant Number: (675715) MIMESIS - Mathematics and Materials Science for Steel Production and Manufacturing
Copyright information: © 2019 by The Iron and Steel Institute of Japan. Published in this repository with the kind permission of the publisher.