TY - GEN TI - On a possible use of neutron three axis diffractometer for studies of elastic and plastic deformation of polycrystalline materials T3 - 57th International Scientific Conference on Experimental Stress Analysis (EAN 2019) AU - Mikula, Pavol AB - 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. SN - 978-802145766-9 UR - http://hdl.handle.net/11104/0302638 UR - http://www.nusl.cz/ntk/nusl-408009 A2 - Ryukhtin, Vasil A2 - Rogante, M. LA - eng KW - instrumentation KW - strain measurements KW - neutron diffraction PY - 2019 PB - Ústav jaderné fyziky, Husinec - Řež 130, 250 68 Řež, http://www.ujf.cas.cz/ ER -