Effect of high pressure torsion on crystallization and magnetic properties of Fe73.9Cu1Nb3Si15.5B6.6

Antoni, Monika; Spieckermann, Florian; Soprunyuk, Viktor; Chawake, Niraj; Sarac, Baran; Zálešák, Jakub; Polak, Christian; Gammer, Christoph; Pippan, Reinhard; Zehetbauer, M.; Eckert, Jürgen

doi:10.1016/j.jmmm.2020.167679

Cited by 8 publications

(2 citation statements)

References 33 publications

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“…SPD can lead to nanocrystallization and even complete amorphization in the case of NiTi shape memory alloys. [2] Furthermore, within the past years, the interest of researchers also turned to the application of SPD methods to materials with functional and tunable properties (thermoelectrics, hydrogen storage, magnetic, biomedical) [3][4][5][6] and even geomaterials. [7] However, the characterization of the microstructure and other properties is always conducted after the complete SPD processing, whereas the dynamic evolution of the microstructure can only be presumed.…”

Section: Introductionmentioning

confidence: 99%

In Situ Synchrotron X‐Ray Diffraction during High‐Pressure Torsion Deformation of Ni and NiTi

et al. 2021

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Section: Introductionmentioning

confidence: 99%

In Situ Synchrotron X‐Ray Diffraction during High‐Pressure Torsion Deformation of Ni and NiTi

et al. 2021

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“…At the end of an SPD treatment, the reached nonequilibrium state of the alloy remains ''frozen.'' The effects of the SPD via HSHPT were reported on various types of materials such as hard magnetic Fe-23wt%Co-30%Cr bulks [17] and soft magnetic Fe 73.9 Cu 1 Nb 3 Si 15.5 B 6.6 [18] or Cu 74 Co 26 . [19] Also, changes in the magnetic properties of the nanocrystalline (Nd,Ho)-(Fe,Co)-B alloy were reported in, [20] with > 25% increase of the maximal magnetic energy product after the SPD process.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Severe Plastic Deformation on the Magnetic Properties of Zr13Co87 Ribbons

Popescu

Palade

Sofronie

et al. 2021

Metall Mater Trans A

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The influence of the severe plastic deformation via high-speed high-pressure torsion (HSHPT) on the structural and magnetic properties of the Zr 13 Co 87 alloys is investigated. Moderate applied deformation promotes the growth of the rhombohedral hard magnetic phase leading to the increase of the sample's hardness and magnetic coercivity. A higher degree of deformation affects the samples morphology leading to a critical value of the grain size under which the exchange coupling of the soft phase is less effective. Additionally, it produces a random alignment of the anisotropy axes, which are both detrimental to the hard magnetic properties.

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Designing Advanced Amorphous/Nanocrystalline Alloys by Controlling the Energy State

Wang,

Song,

Huo

et al. 2024

Advanced Materials

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Amorphous alloys, also known as metallic glasses, exhibit many advanced mechanical, physical and chemical properties. Owing to the nonequilibrium nature, their energy states can vary over a wide range. However, the energy relaxation kinetics are very complex and composed of various types that are coupled with each other. This makes it challenging to control the energy state precisely and to study the energy‐properties relationship. In this brief review, we introduce the recent progresses on studying the enthalpy relaxation kinetics during isothermal annealing, e.g. the observation of two‐step relaxation phenomenon, the detection of relaxation unit (relaxun), the key role of large activation entropy in triggering memory effect, the influence of glass energy state on nanocrystallization. Based on the above knowledge, a new strategy is proposed to design a series of amorphous alloys and their composites consisting of nanocrystals and glass matrix with superior functional properties by precisely controlling the nonequilibrium energy states. As the typical examples, Fe‐based amorphous alloys with both advanced soft magnetism and good plasticity, Gd‐based amorphous/nanocrystalline composites with large magnetocaloric effect, and Fe‐based amorphous alloys with high catalytic performance are specifically described.This article is protected by copyright. All rights reserved

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Effect of high pressure torsion on crystallization and magnetic properties of Fe73.9Cu1Nb3Si15.5B6.6

Cited by 8 publications

References 33 publications

In Situ Synchrotron X‐Ray Diffraction during High‐Pressure Torsion Deformation of Ni and NiTi

In Situ Synchrotron X‐Ray Diffraction during High‐Pressure Torsion Deformation of Ni and NiTi

Effects of the Severe Plastic Deformation on the Magnetic Properties of Zr13Co87 Ribbons

Designing Advanced Amorphous/Nanocrystalline Alloys by Controlling the Energy State

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