Název:
On a possible use of neutron three axis diffractometer for studies of elastic and plastic deformation of polycrystalline materials
Autoři:
Mikula, Pavol ; Ryukhtin, Vasyl ; Rogante, M. Typ dokumentu: Příspěvky z konference Konference/Akce: 57th International Scientific Conference on Experimental Stress Analysis (EAN 2019), Luhačovice (CZ), 20190603
Rok:
2019
Jazyk:
eng
Abstrakt: Feasibility of using a high-resolution three axis neutron diffractometer performance for elastic and plastic deformation studies of metallic polycrystalline samples is presented. The method consists of unconventional set up employing bent perfect crystal (BPC) monochromator and analyzer with a polycrystalline sample in between. After the realization of focusing conditions in real and momentum space at the neutron wavelength of 0.162 nm, a high angular resolution up to FWHM(d/d)=2x10-3 was achieved on the standard Fe(110) sample (2 mm diameter) which then opened the possibility for the measurements of small lattice parameter changes of samples. The feasibility of the instrument for macro-and microstrain as well as grain size studies is demonstrated on the polycrystalline samples of low carbon shear deformed steel wires and the NiTi plates subjected to heat treatment.
Klíčová slova:
instrumentation; neutron diffraction; strain measurements Číslo projektu: LM2015056 (CEP) Poskytovatel projektu: GA MŠk Zdrojový dokument: EAN 2019 - Conference Proceedings, ISBN 978-802145766-9
Instituce: Ústav jaderné fyziky AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0302638