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Microstructure and magnetic behavior of FeCoNi(Mn–Si)x (x = 0.5, 0.75, 1.0) high-entropy alloys

Published online by Cambridge University Press:  14 March 2019

Priyanka Sahu ,
Suresh Solanki ,
Sheetal Dewangan  and
Vinod Kumar Open the ORCID record for Vinod Kumar [Opens in a new window]
Priyanka Sahu
Affiliation:
Department of Metallurgy and Materials Engineering, Indian Institute of Technology Indore, Indore - 453552, India
Suresh Solanki
Affiliation:
Department of Mechanical Engineering, Global Institute of Technology, Jaipur, 302022,India Metallurgical and Materials Engineering, MNIT Jaipur -302017, India
Sheetal Dewangan
Affiliation:
Department of Metallurgy and Materials Engineering, Indian Institute of Technology Indore, Indore - 453552, India
Vinod Kumar*
Affiliation:
Department of Metallurgy and Materials Engineering, Indian Institute of Technology Indore, Indore - 453552, India
*
a)Address all correspondence to this author. e-mail: vk.iitk@gmail.com
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Abstract

FeCoNi(Mn–Si)x (x = 0.5, 0.75, 1.0) high-entropy alloys (HEAs) were successfully synthesized by mechanical alloying (MA), and the effect of Mn and Si in the ferromagnetic alloys on crystal structure and magnetic behavior was thoroughly investigated. XRD, SEM, and TEM were used to investigate the effect of Mn and Si content on the structure of HEAs. The high Mn and Si contents change the structure from the BCC phase to FCC phase. The evolution of surface morphology was discussed on the basis of MA time and content of Mn and Si. The magnetic hysteresis curve confirmed the highest magnetic saturation (Ms) value of 134.21 emu/g for FeCoNi(Mn–Si)1.0 alloy and an appreciably low coercivity (Hc) of 98.07 Oe for FeCoNi(Mn–Si)0.5 alloy. The finite element method (FEM), using COMSOL Multiphysics software, has been used for determining the magnetic flux density (B) on the surface and at the center of the transformer core to determine the performance of the proposed HEAs.

Keywords

mechanical alloyingmetals and alloysmagnetic measurementsmicrostructure
Type
Article
Information
Journal of Materials Research , Volume 34 , Issue 5: Focus Issue: Nanocrystalline High Entropy Materials: Processing Challenges and Properties , 14 March 2019 , pp. 829 - 840
Copyright
Copyright © Materials Research Society 2019 

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