Structure and magnetic properties of nanocrystalline SmCo5 and SmCo3Cu2 prepared by using high-pressure torsion method

Nanocrystalline SmCo5 and SmCo3Cu2 alloys were prepared by using high pressure torsion (HPT) method. The effect of severe plastic deformation of HPT on the structure and magnetic properties of the samples were investigated systematically. The grain size of SmCo5 and SmCo3Cu2 alloys was refined to th...

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Bibliographic Details
Published inAIP advances Vol. 14; no. 1; pp. 015243 - 015243-4
Main Authors Wang, Fei-Yang, Qi, Ting-Ting, Wu, Qiong, Ge, Hong-liang, Si, Ping-Zhan
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.01.2024
AIP Publishing LLC
Subjects
Coercivity
Deformation effects
Grain size
High pressure
Magnetic materials
Magnetic properties
Plastic deformation
Rotation
Samarium base alloys
Torsion
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Summary:Nanocrystalline SmCo5 and SmCo3Cu2 alloys were prepared by using high pressure torsion (HPT) method. The effect of severe plastic deformation of HPT on the structure and magnetic properties of the samples were investigated systematically. The grain size of SmCo5 and SmCo3Cu2 alloys was refined to the nanocrystalline regime or even amorphous state by HPT, depending on the number of the HPT rotation. Lamellar microstructures of the grains were observed in the samples after HPT for 2 turns of rotation. With increasing number of HPT rotation, a further structural refinement and an increasing coercivity were observed. The coercivity of the as-cast SmCo5 and SmCo3Cu2 alloys after HPT reached up to 0.5 and 1.64 T, respectively. This work demonstrates that HPT is a high efficiency method in producing bulk nanocrystalline magnetic materials.
ISSN:2158-3226
2158-3226
DOI:10.1063/9.0000742