Substructure Hardening and Twinning Suppression in Graphene Oxide‐Reinforced Magnesium Nanocomposites
Tahaghoghi, Mehrad; Zarei-Hanzaki, Abbas; Jaskari, Matias; Karjalainen, L. Pentti; Minarik, Peter; Abedi, Hamid Reza (2023-11-12)
Wiley-VCH Verlag
12.11.2023
Tahaghoghi, M., Zarei-Hanzaki, A., Jaskari, M., Karjalainen, L.P., Minarik, P. and Abedi, H.R. (2023), Substructure Hardening and Twinning Suppression in Graphene Oxide-Reinforced Magnesium Nanocomposites. Adv. Eng. Mater., 25: 2300835. https://doi.org/10.1002/adem.202300835
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© 2023 Wiley-VCH GmbH. This is the peer reviewed version of the following article: Tahaghoghi, M., Zarei-Hanzaki, A., Jaskari, M., Karjalainen, L.P., Minarik, P. and Abedi, H.R. (2023), Substructure Hardening and Twinning Suppression in Graphene Oxide-Reinforced Magnesium Nanocomposites. Adv. Eng. Mater., 25: 2300835, which has been published in final form at https://doi.org/10.1002/adem.202300835. 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.
https://rightsstatements.org/vocab/InC/1.0/
© 2023 Wiley-VCH GmbH. This is the peer reviewed version of the following article: Tahaghoghi, M., Zarei-Hanzaki, A., Jaskari, M., Karjalainen, L.P., Minarik, P. and Abedi, H.R. (2023), Substructure Hardening and Twinning Suppression in Graphene Oxide-Reinforced Magnesium Nanocomposites. Adv. Eng. Mater., 25: 2300835, which has been published in final form at https://doi.org/10.1002/adem.202300835. 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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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202312123664
https://urn.fi/URN:NBN:fi:oulu-202312123664
Tiivistelmä
Abstract
The AZ31 magnesium matrix nanocomposites reinforced by 0, 1.2, 2.4 vol% graphene oxide (GO) nanoplatelets are thermomechanically fabricated through friction stir processing, and the influence of nanoplatelets on slip/twin activity is discussed in detail. The addition of GO significantly adjusts the characteristics of the developed substructure during the fabrication route and improves the matrix strength and work hardening rate in further mechanical loading. The presence of GO led to an increase in the length of low-angle boundaries and higher dislocation storage in their vicinity can be found, highlighting the hardening effect of dislocation movements and increased flow stresses. The well-defined developed substructure suppresses extension twinning leading to a twinning-to-slip deformation mode transition. Along with intensifying the substructure development, GO increases total intragranular strains developed during the fabrication and causes an improvement in the nanocomposites’ overall strength.
The AZ31 magnesium matrix nanocomposites reinforced by 0, 1.2, 2.4 vol% graphene oxide (GO) nanoplatelets are thermomechanically fabricated through friction stir processing, and the influence of nanoplatelets on slip/twin activity is discussed in detail. The addition of GO significantly adjusts the characteristics of the developed substructure during the fabrication route and improves the matrix strength and work hardening rate in further mechanical loading. The presence of GO led to an increase in the length of low-angle boundaries and higher dislocation storage in their vicinity can be found, highlighting the hardening effect of dislocation movements and increased flow stresses. The well-defined developed substructure suppresses extension twinning leading to a twinning-to-slip deformation mode transition. Along with intensifying the substructure development, GO increases total intragranular strains developed during the fabrication and causes an improvement in the nanocomposites’ overall strength.
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