0507015 20240103222335.220190729235959.9 85058957258 000453257500032 10.12693/APhysPolA.134.753 4 s. P cav_un_epca*02560680587-42461343 (2018)753-756Polska Akademia Nauk microstructure large strain cav_un_auth*0044342 Kratochvíl J. CZ K cav_un_auth*0101142 Department of Decision Making Theory 50 Kružík Martin UTIA-B Matematická teorie rozhodování Department of Decision Making Theory MTR MTR Ústav teorie informace a automatizace AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2019/MTR/kratochvil-0507015.pdf http://przyrbwn.icm.edu.pl/APP/ABSTR/134/a134-3-31.html cav_un_auth*0347023 GA17-04301S GA ČR Crystalline materials at yield behave as anisotropic, highly viscous fluids. A microscopic inspection reveals a structural adjustment of the crystal lattice to the material flow carried by dislocations. The resistance to this flow determines the strength of ductile materials. The deformation microstructure evolves within a common framework up to very high strains > 100. To avoid energetically costly multislip, materials are subdivided into regions which deform by fewer slip systems. To maintain compatibility, the regions defined as deformation bands occur in a form of elongated alternately misoriented domains filled with fairly equiaxed dislocation cells. In the proposed continuum mechanics model, the formation of deformation bands of a lamellae type is interpreted as a spontaneous deformation instability caused by an anisotropy of hardening. However, such a model of the bands predicts their extreme orientation and their width tends to zero. This trend is opposed by hardening caused by a bowing stress of dislocations within the cells. WOS BA 10000 10100 10101 2020 2 RVO:67985556 http://hdl.handle.net/11104/0298175 S 3+4 Article|Proceedings Paper Physics Multidisciplinary A PHYSICS.MULTIDISCIPLINARY 0.532 0.104 5.4 0.00434 0.089 3764 0.217 0.485 584 Q4 7.782 4.3 Q4 Q4 0.21 Q4 4.321 2018 85058957258 SCOPUS PUBMED 000453257500032 WOS cav_un_epca*0256068 Acta Physica Polonica A 0587-4246 1898-794X Roč. 134 č. 3 2018 753 756 Polska Akademia Nauk