University of Oulu

Ghiasabadi Farahani, M., Kim, J. H., Jaskari, M., Karjalainen, L. P., & Sahu, P. (2022). Newer insights into the discrimination of pole mechanisms of twinning in a face-centered cubic high-Mn steel. Materialia, 21, 101349.

Newer insights into the discrimination of pole mechanisms of twinning in a face-centered cubic high-Mn steel

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Author: Ghiasabadi Farahani, Mehrdad1; Kim, Jeoung Han2; Jaskari, Matias3;
Organizations: 1Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON K7L 3N6, Canada
2Department of Materials Science & Engineering, Hanbat National University, Yuseong-gu, Daejeon 34158, Republic of Korea
3Kerttu Saalasti Institute, Future Manufacturing Technology Group, University of Oulu, Pajatie 5, FIN-85500 Nivala, Finland
4Centre for Advanced Steels Research, Box 4200, University of Oulu, FIN-90014 Oulu, Finland
5Department of Physics, Jadavpur University, Kolkata 700 032, India
Format: article
Version: accepted version
Access: embargoed
Persistent link:
Language: English
Published: Elsevier, 2022
Publish Date: 2024-01-29


Mechanism of deformation twinning during tensile straining of an Fe-0.013C-29Mn-2.4Al steel is reported. Transmission electron microscopy examinations revealed that twinning occurred through a modified pole mechanism proposed by Niewczas and Saada. In this mechanism, twinning Shockley partial dislocations and their stacking faults are formed through interaction among the prismatic dislocations with Frank partials of the Frank dipoles. The activation of the observed pole mechanism was explained through the length of the sessile Frank partials.

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Series: Materialia
ISSN: 2589-1529
ISSN-E: 2589-1529
ISSN-L: 2589-1529
Volume: 21
Article number: 101349
DOI: 10.1016/j.mtla.2022.101349
Type of Publication: A1 Journal article – refereed
Field of Science: 222 Other engineering and technologies
Funding: This work was supported by a grant from the National Research Foundation of Korea (NRF) funded by the Korean government (MSIT) (No. 2021R1A2B5B01002063).
Copyright information: © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license