The outstanding contribution of basal slip in substructure development during friction stir processing of magnesium alloys
Tahaghoghi, Mehrad; Zarei-Hanzaki, Abbas; Mirshekari, Behnam; Moshiri, Ali; Jaskari, Matias; Karjalainen, L. Pentti; Abedi, Hamid Reza (2023-09-05)
Tahaghoghi, M., Zarei-Hanzaki, A., Mirshekari, B., Moshiri, A., Jaskari, M., Karjalainen, L.P. and Abedi, H.R. (2023), The Outstanding Contribution of Basal Slip in Substructure Development during Friction Stir Processing of Magnesium Alloys. Adv. Eng. Mater., 25: 2300650. https://doi.org/10.1002/adem.202300650
© 2023 Wiley-VCH GmbH. This is the peer reviewed version of the following article: Tahaghoghi, M., Zarei-Hanzaki, A., Mirshekari, B., Moshiri, A., Jaskari, M., Karjalainen, L.P. and Abedi, H.R. (2023), The Outstanding Contribution of Basal Slip in Substructure Development during Friction Stir Processing of Magnesium Alloys. Adv. Eng. Mater., 25: 2300650, which has been published in final form at https://doi.org/10.1002/adem.202300650. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
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https://urn.fi/URN:NBN:fi-fe20230914125967
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Abstract
This research reveals the critical role of basal slip in the substructure development during friction stir processing of a magnesium alloy. In this respect, the intragranular lattice rotation axes are considered to identify the activity of different slip systems. The applied shear strain during the procedure is stored in the matrix through slip-induced rotations at the grain level. The rotations around distinct Taylor axes produce “slip domains” separated by necessary boundaries from the parent grains, significantly contributing in grain refinement. The basal slip is easily activated in grains holding different stored energy; however, the nonbasal slip has a higher dependency on the amount of local applied strain. Determining the contribution of different slip systems in strain accommodation reveals that the basal slip imposes the highest fraction of low-angle boundaries into the microstructure leading to the development of the ultimate grain boundary structure.
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