Изучение стали ЭК-181. Зависимость параметров кристаллической решетки от температуры и фактора Дебая-Валлера

М. Dineykhan; V.V. Sumin; D. Sangaa; А.М. Balagurov; D.Т. Aznabaev; B. Mukhametuly

Authors

М. Dineykhan Al-Farabi Kazakh National University, Kazakstan, Almaty
V.V. Sumin M.I.Franka Laboratory of Neutron Physics, JINR, Dubna, Russia
D. Sangaa Laboratory of Neutron Physics. M.I.Franka, JINR, Dubna, Russia
А.М. Balagurov M.I.Franka Laboratory of Neutron Physics, JINR, Dubna, Russia
D.Т. Aznabaev Al-Farabi Kazakh National University, Kazakstan, Almaty
B. Mukhametuly Al-Farabi Kazakh National University, Kazakstan, Almaty

Keywords:

reactor steel, lattice, Debye-Waller factor

Abstract

The samples were investigated by the EC-181 thermal neutron diffraction in the temperature range 15-973 K on the IBR-2 reactor (JINR). From the diffraction spectra by the Rietveld method, we calculated the temperature dependence of the lattice parameter, the internal stresses third kind, and Debye-Waller factor of the steel. It was found that at low temperatures the temperature dependence of the lattice parameter in the steel EK-181 (RUSFER EK-181) does not correspond to that in pure iron and binary iron-chromium alloys with 12 and 16% Cr. In addition, the observed broadening of the reflection (200) diffraction spectra were EC-181 and alloy Fe-12Cr, is not observed in the spectra of Fe-16Cr and pure iron.