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Evaluation of X-ray Bragg peak profiles with the variance method obtained by in situ measurement on Mg-Al alloys
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SYSNO ASEP 0523926 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evaluation of X-ray Bragg peak profiles with the variance method obtained by in situ measurement on Mg-Al alloys Author(s) Farkas, Gergely (UJF-V) RID, ORCID, SAI
Groma, I. (HU)
Vesely, J. (CZ)
Máthis, K. (CZ)Number of authors 4 Source Title Journal of Applied Crystallography. - : Wiley - ISSN 0021-8898
Roč. 53, č. 2 (2020), s. 360-368Number of pages 9 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords X-ray diffraction ; variance method ; magnesium alloys ; dislocation structure ; profile analysis Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GA18-07140S GA ČR - Czech Science Foundation (CSF) EF16_013/0001794 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000524119500006 EID SCOPUS 85083026080 DOI 10.1107/S1600576720000709 Annotation The microstructural evolution in randomly oriented Mg-Al samples is investigated in situ during compression by X-ray diffraction as a function of Al concentration. The diffraction data are evaluated by the variance method, which provides information about the dislocation density and spatial distribution of the dislocations. The dislocation density increases with increasing alloying content. Since the increment of the dislocation density above the yield point is linear, the mutual dislocation interaction type is determined from the Taylor equation. The results indicate the dominance of basal-basal dislocation interactions, but at higher alloying content the share of the basal-non-basal interactions increases. It is shown that the dynamics of dislocation wall formation also depend on Al content. Transmission electron microscopy observations are in agreement with the results obtained by X-ray line profile analysis. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2021 Electronic address https://doi.org/ 10.1107/S1600576720000709
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