Formation of High-Coercivity State in Fe2NiAl Alloy During Decomposition of Solid Solution Under Quenching from Liquid State and Subsequent Annealing


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Abstract

The methods of transmission electron microscopy, atomic force microscopy, x-ray diffraction, and magnetic measurements were used to study the laws of formation of the microstructure and magnetic properties in Fe2NiAl (alni) alloy after quenching from liquid state and subsequent annealing at 500 – 780°C. The microstructure of rapidly hardened flakes is characterized by the presence of inhomogeneities less than 10 nm in size and boundaries of anti-phase domains. Annealing of the flakes is accompanied by their discontinuous decomposition, which causes growth of the colonies comprising alternating plates of β and\( {\upbeta}_2^{\prime } \) phases on grain boundaries.

About the authors

V. P. Menushenkov

Research Laboratory of Permanent Magnets, National University of Science and Technology “Moscow Institute of Steel and Alloys” (MISiS)

Author for correspondence.
Email: menushenkov@gmail.com
Russian Federation, Moscow

M. V. Gorshenkov

Research Laboratory of Permanent Magnets, National University of Science and Technology “Moscow Institute of Steel and Alloys” (MISiS)

Email: menushenkov@gmail.com
Russian Federation, Moscow

E. S. Savchenko

Research Laboratory of Permanent Magnets, National University of Science and Technology “Moscow Institute of Steel and Alloys” (MISiS)

Email: menushenkov@gmail.com
Russian Federation, Moscow

I. V. Shchetinin

Research Laboratory of Permanent Magnets, National University of Science and Technology “Moscow Institute of Steel and Alloys” (MISiS)

Email: menushenkov@gmail.com
Russian Federation, Moscow

A. G. Savchenko

Research Laboratory of Permanent Magnets, National University of Science and Technology “Moscow Institute of Steel and Alloys” (MISiS)

Email: menushenkov@gmail.com
Russian Federation, Moscow

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