Open AccessВлияние Cr и Ni на формирование фаз в механосинтезированном нанокомпозите на основе Fe-=SUB=-75-=/SUB=-C-=SUB=-25-=/SUB=-
Author(s) -
А. А. Чулкина,
А. И. Ульянов,
В. А. Волков,
А. Л. Ульянов,
А. В. Загайнов
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2020.05.49180.154-18
Subject(s) - cementite , materials science , annealing (glass) , austenite , alloy , mössbauer spectroscopy , amorphous solid , metallurgy , amorphous metal , nanocomposite , curie temperature , crystallization , analytical chemistry (journal) , nickel , crystallography , ferromagnetism , microstructure , chemical engineering , composite material , condensed matter physics , chemistry , physics , chromatography , engineering
X-ray diffraction, Mossbauer spectroscopy, and magnetic measurements have been used to study the phase formation and doping during mechanical synthesis (MS) and subsequent annealing of the alloy (Fe0.80Cr0.05Ni0.15)75C25. It has been shown that, after MS, the nanocomposite contains mainly two phases – an amorphous phase and cementite A. During annealing, as a result of crystallization of the amorphous phase, cementite B is formed, in which contains more nickel than in the mechanically synthesized cementite A. As the annealing temperature increases, austenite, which is inhomogeneous in nickel content, is formed. The Curie temperature of this austenite reaches 500 °C. It has been determined that cementite in the mechanosynthesized nanocomposite (Fe,Cr,Ni)75C25 has a higher temperature stabilitythan that in a MS composite (Fe,Ni)75C25.