Abstract
Developing cost-effective soft magnetic alloys with excellent mechanical properties is very important to energy-saving industries. This study investigated the magnetic and mechanical properties of a series of (Fe0.3Co0.5Ni0.2)100−x(Al1/3Si2/3)x high-entropy alloys (HEAs) (x = 0, 5, 10, 15, and 25) at room temperature. The Fe0.3Co0.5Ni0.2 base alloy composition was chosen since it has very the smallest saturation magnetostriction coefficient. It was found that the (Fe0.3Co0.5Ni0.2)95(Al1/3Si2/3)5 alloy maintains a simple face-centered cubic (FCC) solid solution structure in the states of as-cast, cold-rolled, and after annealing at 1000 °C. The alloy after annealing exhibits a tensile yield strength of 235 MPa, ultimate tensile strength of 572 MPa, an elongation of 38%, a saturation magnetization (Ms) of 1.49 T, and a coercivity of 96 A/m. The alloy not only demonstrates an optimal combination of soft magnetic and mechanical properties, it also shows advantages of easy fabrication and processing and high thermal stability over silicon steel and amorphous soft magnetic materials. Therefore, the alloy of (Fe0.3Co0.5Ni0.2)95(Al1/3Si2/3)5 holds good potential as next-generation soft magnets for wide-range industrial applications.
Highlights
Contrasted to the traditional alloy design concept that is based on one or two major elements, high-entropy alloys (HEAs) usually contain four or more major elements, and the content of each major element is above 5 at% [1,2,3,4,5,6,7,8,9,10]
High thermal stability and resistance to heat softening; easier to break the tradeoff between strength and ductility; very low stacking-fault energy; high irradiation resistance; high corrosion resistance
To date considerable research efforts on HEAs focus on their microstructures and mechanical properties [26,27,28,29,30,31] while there is rising interest in developing high-entropy soft magnetic materials [32,33,34,35,36,37,38,39,40]
Summary
Contrasted to the traditional alloy design concept that is based on one or two major elements, high-entropy alloys (HEAs) usually contain four or more major elements, and the content of each major element is above 5 at% [1,2,3,4,5,6,7,8,9,10]. To date considerable research efforts on HEAs focus on their microstructures and mechanical properties [26,27,28,29,30,31] while there is rising interest in developing high-entropy soft magnetic materials [32,33,34,35,36,37,38,39,40]. Common soft magnetic alloys include silicon steel, ferrite, iron-nickel alloys, and bulk metallic glasses. To date many challenges still remain for energy-saving and high-performance applications. It is time-consuming to produce and process silicon-steels [42].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
