Сибирский федеральный университет

Тип публикации: статья из журнала (материалы конференций, опубликованные в журналах)

Конференция: International Conference on Nano-structures Self-Assembling (NanoSeA2008); Univ Rome Tor Vergata, Rome, ITALY; Univ Rome Tor Vergata, Rome, ITALY

Год издания: 2009

Идентификатор DOI: 10.1016/j.spmi.2008.11.023

Ключевые слова: Frank-Kasper structure, Local electron structure, Spin-polarized electronic conditions, Austenite grain, Austenitic, C-steel, Close packed structures, Dynamic loadings, Electron structures, Induction method, Intergranular, Local electronic structures, Local magnetization, Self-consistent field, Transition regions, Austenite, Diffraction, Electronic structure, Electrons, Magnets, Manganese, Manganese compounds, Optical microscopy, Phase transitions, Spin dynamics, Steel, Textures, Magnetization

Аннотация: The aim of the work is to elucidate the origin of magnetization presence in austenitic Fe86Mn13C steel after dynamic loading. The observation of microstructures in the region of transition from FCC austenitic Fe86Mn13C 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 Fe87Mn13 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. (c) 2009 Published by Elsevier Ltd

Журнал: SUPERLATTICES AND MICROSTRUCTURES

Выпуск журнала: Vol. 46, Is. 1-2

Номера страниц: 114-120

ISSN журнала: 07496036

Место издания: LONDON

Издатель: ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD

• Kveglis L.I. (East-Kazakstan Technical University)
• Abylkalykova R.B. (East-Kazakstan Technical University)
• Noskov F.M. (Siberian Federal University)
• Arhipkin V.G. (Institute of Physics SB RAS)
• Musikhin V.A. (Institute of Physics SB RAS)
• Cherepanov V.N. (Siberian Physics and Technical Institute)
• Niavro A.V. (Siberian Physics and Technical Institute)

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