Počet záznamů: 1  

Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium

  1. 1. 0475684 - UJF-V 2018 RIV GB eng J - Článek v odborném periodiku
    Čapek, Jan - Máthis, K. - Clausen, B. - Barnett, M.R.
    Dependence of twinned volume fraction on loading mode and Schmid factor in randomly textured magnesium.
    Acta Materialia. Roč. 130, MAY (2017), s. 319-328 ISSN 1359-6454
    Grant CEP: GA ČR GB14-36566G
    Institucionální podpora: RVO:61389005
    Klíčová slova: twinning * magnesium * neutron diffraction * Schmid factor
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
    Impakt faktor: 6.036, rok: 2017

    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.
    Trvalý link: http://hdl.handle.net/11104/0272339