0456300 20240103211857.020160229235959.9 000364315000005 84947033010 10.1080/14786435.2015.1090638 19 s. P cav_un_epca*02966931478-64359532 (2015)3621-3639Taylor & Francis deformation substructure rigid-plastic crystal plasticity cav_un_auth*0044342 Kratochvíl J. CZ 50 cav_un_auth*0101142 Kružík Martin Matematická teorie rozhodování Department of Decision Making Theory MTR MTR UTIA-B Department of Decision Making Theory 50 Ústav teorie informace a automatizace AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2015/MTR/kruzik- 0456300.pdf GAP107/12/0121 GA ČR CZ cav_un_auth*0328768 The formation of deformation bands with the typically alternating sign of the misorientation across their boundaries is interpreted as spontaneous deformation instability caused by anisotropy of hardening. To analyse the nature of the fragmentation, a model of a rigid-plastic crystal domain deformed by symmetric double slip in a plane-strain compression is considered. The basic reason for the deformation band existence is that a local decrease in number of active slip systems in the bands is energetically less costly than a homogeneous deformation by multislip. However, such model of the bands predicts their extreme orientation and their width tends to zero. This trend is modified by hardening caused by a build up of the band boundaries and by a dislocation bowing (Orowan) stress. The model provides an explanation of observed orientation of the bands, their width and the significant change in the structural morphology seen as the band reorientation occurs at large strains. The predictions are in a favourable agreement with the available observations. 2016 BM 2 RVO:67985556 http://hdl.handle.net/11104/0257711 S MATERIALSSCIENCE.MULTIDISCIPLINARY|METALLURGY&METALLURGICALENGINEERING|PHYSICS.CONDENSEDMATTER|PHYSICS.APPLIED|MECHANICS 1.705 0.365 999.9 0.01497 0.712 11226 0.883 Q1 1.524 249 Q1 58.956 55.5 Q2 Q2 77.397 2015 84947033010 SCOPUS 000364315000005 WOS cav_un_epca*0296693 Philosophical Magazine 1478-6435 1478-6443 Roč. 95 č. 32 2015 3621 3639 Taylor & Francis