Structural properties of Fe49Ni49Ti2 alloy deformed by high pressure torsion

Tetrataenite (L10-FeNi) is a promising candidate for use as a permanent magnet free of rare-earth elements because of its favorable properties such as high magnetic anisotropy and coercivity. We report on structural properties of Fe49Ni49Ti2 alloy after severe plastic deformation (SPD) by high press...

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Bibliographic Details
Published in:AIP advances 2021-02, Vol.11 (2), p.025311-025311-4
Main Authors: Ulyanov, Maxim, Taskaev, Sergey, Shevyrtalov, Sergey, Medvedskaya, Polina, Gunderov, Dmitriy
Format: Article
Language:English
Subjects:
Coercivity
Defect annealing
Low temperature
Magnetic anisotropy
Magnetic properties
Permanent magnets
Plastic deformation
Rare earth elements
Stress concentration
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Summary:Tetrataenite (L10-FeNi) is a promising candidate for use as a permanent magnet free of rare-earth elements because of its favorable properties such as high magnetic anisotropy and coercivity. We report on structural properties of Fe49Ni49Ti2 alloy after severe plastic deformation (SPD) by high pressure torsion (HPT) technique. The main magnetic and structural characteristics of bulk and HPT materials were determined. As a result of plastic deformation, all samples were obtained with high concentration of defects and stressed state. Low-temperature annealing was used to accelerate the kinetics of phase formation and the possible appearance of nuclei of a stable chemically ordered L10 phase of tetrataenite. Our research shows that it is premature to talk about the formation of even a small amount of phase L10. Additional research needs to be done.
ISSN:2158-3226
2158-3226
DOI:10.1063/9.0000084