TEM analysis of deformation bands created by tensile deformation of superelastic NiTi wires

0532824 - FZÚ 2021 RIV US eng J - Článek v odborném periodiku
Molnárová, Orsolya - Šittner, Petr - Veselý, J. - Cieslar, M.
TEM analysis of deformation bands created by tensile deformation of superelastic NiTi wires.
Materials Characterization. Roč. 167, Sep (2020), s. 1-10, č. článku 110470. ISSN 1044-5803. E-ISSN 1873-4189
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA ČR GA18-03834S; GA MŠMT LM2018110
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: shape memory alloy * martensitic phase transformation * NiTi * transmission electron microscopy * selected area electron diffraction * dark field imaging
Obor OECD: Materials engineering
Impakt faktor: 4.342, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.matchar.2020.110470

Deformation processes derived from martensitic transformation in shape memory alloys are theoretically fully recoverable in a complete thermomechanical loading cycle across transformation range and do not leave any lattice defects in the microstructure. In reality, this is rarely the case in NiTi, since plastic deformation tends to accompany the martensitic transformation, particularly if it proceeds under large stress. Lattice defects observed in the microstructure of deformed NiTi wires (slip dislocations and deformation bands) attract the attention of researchers, since they are linked to unrecovered strains and play significant role in functional fatigue, shape setting or two-way shape memory effect. In this work, we present an experimental approach allowing for analysis of deformation bands in deformed NiTi
Trvalý link: http://hdl.handle.net/11104/0311215