Original title: On a possible use of neutron three axis diffractometer for studies of elastic and plastic deformation of polycrystalline materials
Authors: Mikula, Pavol ; Ryukhtin, Vasyl ; Rogante, M.
Document type: Papers
Conference/Event: 57th International Scientific Conference on Experimental Stress Analysis (EAN 2019), Luhačovice (CZ), 20190603
Year: 2019
Language: eng
Abstract: 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.
Keywords: instrumentation; neutron diffraction; strain measurements
Project no.: LM2015056 (CEP)
Funding provider: GA MŠk
Host item entry: EAN 2019 - Conference Proceedings, ISBN 978-802145766-9

Institution: Nuclear Physics Institute AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0302638

Permalink: http://www.nusl.cz/ntk/nusl-408009


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Research > Institutes ASCR > Nuclear Physics Institute
Conference materials > Papers