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Advanced in-situ experimental techniques for characterization of deformation mechanisms in magnesium alloys
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SYSNO ASEP 0567263 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Advanced in-situ experimental techniques for characterization of deformation mechanisms in magnesium alloys Author(s) Dittrich, J. (CZ)
Farkas, Gergely (UJF-V) RID, ORCID, SAI
Drozdenko, D. (CZ)
Knapek, M. (CZ)
Máthis, K. (CZ)
Minárik, P. (SK)Number of authors 6 Article number 168388 Source Title Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 937, MAR (2023)Number of pages 13 s. Publication form Print - P Language eng - English Country CH - Switzerland Keywords Magnesium alloys ; texture ; twinning ; acoustic emission ; neutron diffraction ; in-situ EBSD OECD category Materials engineering R&D Projects LM2018111 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UJF-V - RVO:61389005 UT WOS 000900158200001 EID SCOPUS 85143803871 DOI 10.1016/j.jallcom.2022.168388 Annotation A combination of advanced in-situ experimental techniques, comprised of neutron diffraction, acoustic emission (AE), and in-situ electron backscattered diffraction (EBSD) was selected to provide extensive in-sight into the deformation behavior of magnesium alloys based on their mutual complementarity. The potential and limitations of these techniques were shown and discussed in the scope of the study of the influence of the crystallographic texture influence on the activity of individual deformation mechanisms in a hot-rolled sheet of the AZ31 magnesium alloy. The neutron diffraction experiments coupled with a re-cording of the AE signal allowed monitoring of the twinning activity and the evolution of its dynamics from nucleation toward twin growth. The AE suggested microplastic behavior, which was confirmed by the lattice strain evolution analysis for the sample compressed in the sheet normal direction. The in-situ EBSD experiments provided direct observation of the deformed microstructure, including the formation of twinning bands and the transition from twin nucleation to growth with progressing strain, being in very good agreement with the indirect neutron diffraction and AE measurements. Furthermore, the subsequent analysis of the EBSD maps enabled the quantification of the twinned volume fraction and its qualitative comparison with the evolution measured by neutron diffraction. The EBSD-based slip trace analysis re-vealed a notable non-Schmid basal activity and offered insight into the mechanisms accommodating strain once the twinning was exhausted. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2024 Electronic address https://doi.org/10.1016/j.jallcom.2022.168388
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