Počet záznamů: 1
Model of Structural Fragmentation Induced by High Pressure Torsion
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SYSNO ASEP 0347197 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Model of Structural Fragmentation Induced by High Pressure Torsion Tvůrce(i) Kratochvíl, J. (CZ)
Kružík, Martin (UTIA-B) RID, ORCID
Sedláček, R. (DE)Celkový počet autorů 3 Zdroj.dok. Reviews on Advanced Materials Science - ISSN 1606-5131
Roč. 25, č. 1 (2010), s. 88-98Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. RU - Rusko Klíč. slova High-pressure torsion ; intergranular glide ; homogeneous deformation mode Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEZ AV0Z10750506 - UTIA-B (2005-2011) UT WOS 000280468300012 Anotace The paper analyzes mechanisms of ultra-fine grain substructure formation as observed in high pressure torsion (HPT) experiments. Accepting that HPT shearing is achieved by intergranular glide (M. Hafok and R. Pippan, Scripta Materialia, 56:757-760, 2007) the fragmentation process is interpreted within the framework of crystal plasticity. The deformation is treated as a plastic flow though the adjustable crystal lattice fragmented into misoriented regions. The basic feature of the substructure formation is an effective rotation of the slip systems approaching asymptotically the observed steady state. The fragmentation is interpreted as an instability of the homogeneous deformation mode. It is proposed that the rotation causes a continuous reconstruction of the substructure pattern. The hindered destruction of the previous pattern leads to enhanced hardening. Pracoviště Ústav teorie informace a automatizace Kontakt Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201. Rok sběru 2011
Počet záznamů: 1