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Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium
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SYSNO ASEP 0475684 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium Author(s) Čapek, Jan (UJF-V)
Máthis, K. (CZ)
Clausen, B. (US)
Barnett, M.R. (AU)Number of authors 4 Source Title Acta Materialia. - : Elsevier - ISSN 1359-6454
Roč. 130, MAY (2017), s. 319-328Number of pages 10 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords twinning ; magnesium ; neutron diffraction ; Schmid factor Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GB14-36566G GA ČR - Czech Science Foundation (CSF) Institutional support UJF-V - RVO:61389005 UT WOS 000401388700029 EID SCOPUS 85016406285 DOI 10.1016/j.actamat.2017.03.017 Annotation he twinning activity in random textured cast magnesium during room temperature tension and compression tests was monitored by neutron diffraction (ND). Variation of integrated intensities of selected diffraction peaks, characterizing the twinned volume in particularly oriented grains was compared with calculated Schmid factors for extension twinning of these grains. It is shown that in tension there is a direct proportion between the twinned volume and the maximum value of the Schmid factor for a given grain orientation. In contrast, in compression this relation is not valid. The twinned volume in this case is influenced by both deviation of the grain from the ideal orientation and its rotation around the c-axis. The experimental results are in good agreement with those obtained from elasto-plastic self-consistent (EPSC) modeling. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2018
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