Number of the records: 1
Evolution of internal stresses during cyclic superelastic deformation of NiTi investigated by X-ray synchrotron diffraction
- 1.
SYSNO ASEP 0456634 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Evolution of internal stresses during cyclic superelastic deformation of NiTi investigated by X-ray synchrotron diffraction Author(s) Sedmák, P. (CZ)
Šittner, Petr (FZU-D) RID, ORCID
Pilch, Jan (FZU-D) RID
Curfs, C. (FR)Source Title Materials Today: Proceedings ICOMAT 2014. - Amsterdam : Elsevier Ltd, 2015 / San Juan J. ; López-Echarri A. ; Nó M.L. ; López G.A. - ISSN 2214-7853 Pages s. 731-734 Number of pages 4 s. Publication form Online - E Action International Conference on Martensitic Transformations ICOMAT 2014 Event date 06.07.2014-11.07.2014 VEvent location Bilbao Country ES - Spain Event type WRD Language eng - English Country NL - Netherlands Keywords shape memory alloy ; NiTi ; martensitic transformation ; cyclic deformation ; x-ray diffraction Subject RIV JG - Metallurgy R&D Projects GPP108/12/P111 GA ČR - Czech Science Foundation (CSF) GA14-15264S GA ČR - Czech Science Foundation (CSF) GAP107/12/0800 GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 EID SCOPUS 84955072720 DOI https://doi.org/10.1016/j.matpr.2015.07.386 Annotation Cyclic tensile superelastic deformation of NiTi was investigated using high resolution in-situ synchrotron x-ray diffraction method. Diffraction patterns were recorded under applied stress prior and after the stress induced martensitic transformation, analyzed and interpreted in view of the evolution of microstructure in the transforming polycrystal. A simple bicrystal scheme of the polycrystal transformation is used to rationalize the experimental evidence on microstructure evolution during cycling. It is claimed that the instability of cyclic superelastic response of NiTi is due to the gradual rise of internal stresses originating from the accumulation of plastic deformation accompanying the martensitic transformation in constrained polycrystalline environment. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2016
Number of the records: 1