Počet záznamů: 1
A novel method of experimental determination of grain stresses and critical resolved shear stresses for slip and twin systems in a magnesium alloy
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SYSNO ASEP 0577193 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A novel method of experimental determination of grain stresses and critical resolved shear stresses for slip and twin systems in a magnesium alloy Tvůrce(i) Kot, P. (PL)
Wronski, M. (PL)
Baczmanski, A. (PL)
Ludwik, A. (PL)
Wroński, S. (PL)
Wierzbanowski, K. (PL)
Scheffzük, Ch. (DE)
Pilch, Jan (UJF-V) RID
Farkas, Gergely (UJF-V) RID, ORCID, SAICelkový počet autorů 9 Číslo článku 113469 Zdroj.dok. Measurement. - : Elsevier - ISSN 0263-2241
Roč. 221, NOV (2023)Poč.str. 26 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Neutron diffraction measurement ; Crystallographic slip ; Twinning ; Critical resolved shear stress ; Elastoplastic deformation ; Magnesium alloy Obor OECD Materials engineering CEP EF16_013/0001812 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CICRR - 90241 - Centrum výzkumu Řež s.r.o. Způsob publikování Open access Institucionální podpora UJF-V - RVO:61389005 UT WOS 001081720000001 EID SCOPUS 85171625999 DOI 10.1016/j.measurement.2023.113469 Anotace A novel original method of determination of stresses and critical resolved shear stresses (CRSSs) using neutron diffraction was proposed. In this method, based on the crystallite group method, the lattice strains were measured in different directions and using different reflections hkl during uniaxial deformation of magnesium alloy AZ31. The advantage of this method is that the stresses for groups of grains having similar orientations can be determined directly from measurement without any models used for data interpretation. The obtained results are unambiguous and do not depend on the models assumptions as in previous works. Moreover, it was possible for the first time to determine the uncertainty of the measured CRSS values and local stresses at groups of grains.The used methodology allowed for the determination of stress partitioning between grains having different orientations and for an explanation of the anisotropic mechanical behaviour of the strongly textured alloy. Finally, the CRSS values allowed for the validation of the type of intergranular interaction assumed in the elastic-plastic self-consistent model and for a significant reduction of the number of unknown parameters when the model is adjusted to the experimental data. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2024 Elektronická adresa https://doi.org/10.1016/j.measurement.2023.113469
Počet záznamů: 1