Local electron structure and magnetization in beta - Fe sub(86Mn) sub(1)3C

• Published in: Superlattices and microstructures Vol. 46; no. 1-2; pp. 114 - 120
• Main Authors: Kveglis, LI, Abylkalykova, R B, Noskov, F M, Arhipkin, V G, Musikhin, V A, Cherepanov, V N, Niavro, A V
• Format: Journal Article
• Language: English
• Published: 01.08.2009
• Subjects: Austenitic stainless steels; Electronic structure; Loads (forces); Magnetization; Microstructure; Origins; Structural steels; Superlattices
• ISSN: 0749-6036
• DOI: 10.1016/j.spmi.2008.11.023

The aim of the work is to elucidate the origin of magnetization presence in austenitic Fe sub(86Mn) sub(1)3C steel after dynamic loading. The observation of microstructures in the region of transition from FCC austenitic Fe sub(86Mn) sub(1)3C steel to FK12+FK14 type of Frank-Kasper tetrahedral close packed structure is described. We used the methods of optical microscopy, electron microscopy, electron diffraction and X-ray-diffraction to investigate the phase transition region. Changes of local magnetization were estimated by induction method. To explain the magnetization origin of the sample consisting of austenite grains and intergranular layers, which have Frank-Kasper's structure (FK12+FK14) typical of beta -Fe-Mn, the local electronic structure has been investigated for intergranular layers. The local electron structure of FK12 and FK14 clusters have been simulated by method of self-consistent field to understand the nature of non-zero magnetization of the Fe sub(87Mn) sub(1)3 alloy exposed by shock deformation. It was shown, that numbers of states with upward and downward spins are not equal. Therefore the occurrence of magnetization is possible.