Open AccessHIGH RESOLUTION TRANSMISSION ELECTRON MICROSCOPY STUDY OF CRYSTALLOGRAPHY AND MORPHOLOGY OF TiC PRECIPITATES IN ARGON IRRADIATED 18Cr10NiTi STEEL
Author(s) -
А.S. Kalchenko,
S.A. Karpov,
G.D. Tolstolutskaya
Publication year - 2021
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2021-135-026
Subject(s) - high resolution transmission electron microscopy , materials science , transmission electron microscopy , nucleation , irradiation , precipitation , austenite , crystallography , electron diffraction , selected area diffraction , argon , spectroscopy , analytical chemistry (journal) , diffraction , microstructure , metallurgy , nanotechnology , optics , chemistry , physics , organic chemistry , chromatography , quantum mechanics , meteorology , nuclear physics
This work encompasses identification of the crystal structure and analysis of the TiC precipitates in 18Cr-10Ni-Ti austenitic stainless steel under Ar-ions irradiation. High resolution transmission electron microscopy (HRTEM) and energy dispersive spectroscopy (EDS) are used. Orientation relationship of TiC particles in surrounding matrix are indicated by HRTEM and diffraction patterns. The size of the precipitates is found to be critical: the coherency of TiC is kept at the interfaces when the precipitate is in the stage of nucleation, whereas the growth of precipitate up to 10 nm can lead to the loss of coherency in the austenitic steel. The findings suggest that the incoherent precipitate-matrix interface is an important point defect sink and contributes to inert gas bubble formation at elevated irradiation temperatures.