Study of Precipitates in Oxide Dispersion-Strengthened Steels by SANS, TEM, and APT

Rogozhkin, Sergey V. and Klauz, Artem V. and Ke, Yubon and Almásy, László and Nikitin, Alexander A. and Khomich, Artem A. and Bogachev, Aleksei A. and Gorshkova, Yulia E. and Bokuchava, Gizo D. and Kopitsa, Gennadiy P. and Sun, Liying (2024) Study of Precipitates in Oxide Dispersion-Strengthened Steels by SANS, TEM, and APT. NANOMATERIALS, 14 (2). No-194. ISSN 2079-4991

Preview

Text ODS-SANS-TEM-Nanomaterials-2024.pdf Available under License Creative Commons Attribution. Download (4MB) | Preview

Abstract

In this work, the nanostructure of oxide dispersion-strengthened steels was studied by small-angle neutron scattering (SANS), transmission electron microscopy (TEM), and atom probe tomography (APT). The steels under study have different alloying systems differing in their contents of Cr, V, Ti, Al, and Zr. The methods of local analysis of TEM and APT revealed a significant number of nanosized oxide particles and clusters. Their sizes, number densities, and compositions were determined. A calculation of hardness from SANS data collected without an external magnetic field, or under a 1.1 T field, showed good agreement with the microhardness of the materials. The importance of taking into account two types of inclusions (oxides and clusters) and both nuclear and magnetic scattering was shown by the analysis of the scattering data. © 2024 by the authors.

Actions (login required)

Edit Item