Soft magnetic Fe<inf>25</inf>Co<inf>25</inf>Ni<inf>25</inf>(B, Si)<inf>25</inf> high entropy bulk metallic glasses

Tianlong Qi; Yanhui Li; Akira Takeuchi; Guoqiang Xie; Haitao Miao; Wei Zhang

doi:10.1016/j.intermet.2015.06.015

Soft magnetic Fe<inf>25</inf>Co<inf>25</inf>Ni<inf>25</inf>(B, Si)<inf>25</inf> high entropy bulk metallic glasses

Tianlong Qi, Yanhui Li, Akira Takeuchi, Guoqiang Xie, Haitao Miao, Wei Zhang

ENG - Quantum Science and Energy Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

New Fe<inf>25</inf>Co<inf>25</inf>Ni<inf>25</inf>(B, Si)<inf>25</inf> high entropy bulk metallic glasses (HE-BMGs) with superior soft magnetic and mechanical properties are developed. The HE-BMGs show high glass transition temperature and wide supercooled liquid region (ΔT<inf>x</inf>). Fully glassy rods with diameters up to 1.5 mm were fabricated for the Fe<inf>25</inf>Co<inf>25</inf>Ni<inf>25</inf>(B<inf>0.7</inf>Si<inf>0.3</inf>)<inf>25</inf> alloy by copper mold casting method. The HE-BMGs exhibit high yield strength of ∼3624 MPa with large plastic strain of ∼3.1%, which is superior to the pre-developed HE-BMGs. The alloys also possess good soft magnetic properties, i.e., rather high saturation magnetization of ∼0.87 T, low coercive force of ∼1.1 A/m, and high effective permeability at 1 kHz of ∼19,800. This combination of these excellent properties gives the new HE-BMGs good promise for both scientific and engineering applications.

Original language	English
Pages (from-to)	8-12
Number of pages	5
Journal	Intermetallics
Volume	66
DOIs	https://doi.org/10.1016/j.intermet.2015.06.015
Publication status	Published - 2015 Jun 26

Keywords

Glass forming ability
High-entropy alloys
Magnetic properties
Mechanical properties
Metallic glasses
Thermal properties

ASJC Scopus subject areas

Mechanical Engineering
Mechanics of Materials
Materials Chemistry
Metals and Alloys
Chemistry(all)

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10.1016/j.intermet.2015.06.015

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@article{a4529c9fd2c649f6bef68b89d85d5c3a,

title = "Soft magnetic Fe25Co25Ni25(B, Si)25 high entropy bulk metallic glasses",

abstract = "New Fe25Co25Ni25(B, Si)25 high entropy bulk metallic glasses (HE-BMGs) with superior soft magnetic and mechanical properties are developed. The HE-BMGs show high glass transition temperature and wide supercooled liquid region (ΔTx). Fully glassy rods with diameters up to 1.5 mm were fabricated for the Fe25Co25Ni25(B0.7Si0.3)25 alloy by copper mold casting method. The HE-BMGs exhibit high yield strength of ∼3624 MPa with large plastic strain of ∼3.1%, which is superior to the pre-developed HE-BMGs. The alloys also possess good soft magnetic properties, i.e., rather high saturation magnetization of ∼0.87 T, low coercive force of ∼1.1 A/m, and high effective permeability at 1 kHz of ∼19,800. This combination of these excellent properties gives the new HE-BMGs good promise for both scientific and engineering applications.",

keywords = "Glass forming ability, High-entropy alloys, Magnetic properties, Mechanical properties, Metallic glasses, Thermal properties",

author = "Tianlong Qi and Yanhui Li and Akira Takeuchi and Guoqiang Xie and Haitao Miao and Wei Zhang",

year = "2015",

month = jun,

day = "26",

doi = "10.1016/j.intermet.2015.06.015",

language = "English",

volume = "66",

pages = "8--12",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Soft magnetic Fe25Co25Ni25(B, Si)25 high entropy bulk metallic glasses

AU - Qi, Tianlong

AU - Li, Yanhui

AU - Takeuchi, Akira

AU - Xie, Guoqiang

AU - Miao, Haitao

AU - Zhang, Wei

PY - 2015/6/26

Y1 - 2015/6/26

N2 - New Fe25Co25Ni25(B, Si)25 high entropy bulk metallic glasses (HE-BMGs) with superior soft magnetic and mechanical properties are developed. The HE-BMGs show high glass transition temperature and wide supercooled liquid region (ΔTx). Fully glassy rods with diameters up to 1.5 mm were fabricated for the Fe25Co25Ni25(B0.7Si0.3)25 alloy by copper mold casting method. The HE-BMGs exhibit high yield strength of ∼3624 MPa with large plastic strain of ∼3.1%, which is superior to the pre-developed HE-BMGs. The alloys also possess good soft magnetic properties, i.e., rather high saturation magnetization of ∼0.87 T, low coercive force of ∼1.1 A/m, and high effective permeability at 1 kHz of ∼19,800. This combination of these excellent properties gives the new HE-BMGs good promise for both scientific and engineering applications.

AB - New Fe25Co25Ni25(B, Si)25 high entropy bulk metallic glasses (HE-BMGs) with superior soft magnetic and mechanical properties are developed. The HE-BMGs show high glass transition temperature and wide supercooled liquid region (ΔTx). Fully glassy rods with diameters up to 1.5 mm were fabricated for the Fe25Co25Ni25(B0.7Si0.3)25 alloy by copper mold casting method. The HE-BMGs exhibit high yield strength of ∼3624 MPa with large plastic strain of ∼3.1%, which is superior to the pre-developed HE-BMGs. The alloys also possess good soft magnetic properties, i.e., rather high saturation magnetization of ∼0.87 T, low coercive force of ∼1.1 A/m, and high effective permeability at 1 kHz of ∼19,800. This combination of these excellent properties gives the new HE-BMGs good promise for both scientific and engineering applications.

KW - Glass forming ability

KW - High-entropy alloys

KW - Magnetic properties

KW - Mechanical properties

KW - Metallic glasses

KW - Thermal properties

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U2 - 10.1016/j.intermet.2015.06.015

DO - 10.1016/j.intermet.2015.06.015

M3 - Article

VL - 66

SP - 8

EP - 12

JO - Intermetallics

JF - Intermetallics

SN - 0966-9795

ER -

Soft magnetic Fe<inf>25</inf>Co<inf>25</inf>Ni<inf>25</inf>(B, Si)<inf>25</inf> high entropy bulk metallic glasses

Abstract

Keywords

ASJC Scopus subject areas

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