Электронный каталог

Статья

Balagurov, A.M.
First Comprehensive Structural Study of the E2&sub(1) Carbide Phase in Fe-Ga(Al) Alloys / A.M.Balagurov, A.S.Sohatsky, S.V.Sumnikov, B.Yerzhanov, [a.o.]. – Text : electronic // Journal of Materials Science. – 2026. – Vol. 61, No. 14. – P. 9681-9693. – URL: https://doi.org/10.1007/s10853-026-12453-0. – Bibliogr.: 26.

It is shown that in the presence of carbon in Fe&sub(74)Ga&sub(26) and Fe&sub(74)(Ga,Al)&sub(26) alloys, perovskite-like structure of the E2&sub(1) type (also known as κ-carbide) can form. The results were obtained in high-resolution neutron diffraction experiments on bulk samples and confirmed by measurements of X-ray and electron diffraction patterns. The main structural phase in the studied alloys is mesoscopic clusters D0&sub(3) randomly embedded in a B2 matrix. Regions with the E2&sub(1) phase are observed both along the grain boundaries and in the volume of D0&sub(3). For the first time, the quantitative structural and crystallographic characteristics of the κ-carbide phase in Fe-Ga based alloys were precisely determined and the presence of E2&sub(1)-I and E2&sub(1)-II phases with slightly different compositions was proved. Their linear dependence on the gallium content was demonstrated. As Fe&sub(3)(Ga,Al) alloys exhibit also an enhanced magnetostriction, the presence of the E2&sub(1) phase should be considered in future, which has not been done so far.



ОИЯИ = ОИЯИ (JINR)2026