Počet záznamů: 1
On the coupling between martensitic transformation and plasticity in NiTi: Experiments and continuum based modelling
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SYSNO ASEP 0494430 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název On the coupling between martensitic transformation and plasticity in NiTi: Experiments and continuum based modelling Tvůrce(i) Šittner, Petr (UJF-V) ORCID, RID, SAI
Sedlák, Petr (UJF-V) ORCID
Seiner, Hanuš (UJF-V) ORCID
Sedmák, P. (CZ)
Delville, R. (BE)
Heller, Luděk (UJF-V) ORCID
Kadeřávek, Lukáš (UJF-V) ORCIDCelkový počet autorů 7 Zdroj.dok. Progress in Materials Science. - : Elsevier - ISSN 0079-6425
Roč. 98, č. 10 (2018), s. 249-298Poč.str. 50 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova shape memory alloy ; Martensitic transformation ; plasticity ; thermomechanical loading ; mechanics modelling ; X-ray diffraction ; Nitinol ; transmission electron microscopy Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) CEP LM2015048 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_013/0001794 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UJF-V - RVO:61389005 UT WOS 000445714000005 EID SCOPUS 85049882428 DOI 10.1016/j.pmatsci.2018.07.003 Anotace Recent macroscopic experimental and theoretical evidence on the stress-strain-temperature behavior of NiTi beyond the strain recoverability limits (large strain, high stress, high temperature), where reversible martensitic transformation tends to proceed together with irreversible plastic deformation processes, is reviewed. Model predictions on the transformation plasticity coupling are laid out based on the mathematical theory of martensitic microstructures and the crystal plasticity theory. A particular attention is paid to the strain compatibility at moving phase interfaces that may have a direct impact on the plasticity accompanying the martensitic transformation. It is suggested that strong transformation-plasticity coupling shall be expected during the reverse martensitic transformation. Macroscopic models from the literature capable of simulation of thermomechanical responses of NiTi polycrystals due to coexisting martensitic transformation and plastic deformation are reviewed. Dedicated thermomechanical loading experiments on superelastic and actuator NiTi wires aimed at improving our understanding of the coupling between martensitic transformation and plasticity are presented. Based on the results of in-situ studies during thermomechanical loading experiments (electric resistance, synchrotron Xray diffraction, surface strain by DIC, relaxations) and characterization microstructures in deformed wires by TEM, it is shown that: (i) microstructures and consequently functional properties of annealed NiTi wires can be purposely manipulated by thermomechanical processing, (ii) shape setting of NiTi can be performed at relatively low temperatures (< 300 degrees C), (iii) strain drift of NiTi actuators can be brought under control utilizing the knowledge derived from the presented experiments. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2019
Počet záznamů: 1