Effect of Co concentration on thermal stability and magnetic properties of (Fe,Co)-Nb-Gd-B glassy alloys

Fei Jia; Wei Zhang; Xingguo Zhang; Guoqiang Xie; Hisamichi Kimura; Akihiro Makino; Akihisa Inoue

doi:10.1016/j.jallcom.2010.02.068

Effect of Co concentration on thermal stability and magnetic properties of (Fe,Co)-Nb-Gd-B glassy alloys

Fei Jia, Wei Zhang, Xingguo Zhang, Guoqiang Xie, Hisamichi Kimura, Akihiro Makino, Akihisa Inoue

New Industry Creation Hatchery Center (NICHe)

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

13 Citations (Scopus)

Abstract

A two-stage-like glass transition phenomenon attenuated gradually with an increase in Co content in (Fe_1-yCo_y)_67.5Nb ₄Gd_3.5B₂₅ (y = 0.1-0.5) glassy alloys, and disappeared for the alloy with y = 0.5, resulting in a large supercooled liquid region of 102 K. As the Co content increases, the liquidus temperature decreases gradually, and the reduced glass transition temperature increases, indicating the enhancement of glass-forming ability (GFA). The best GFA was obtained for alloy with y = 0.5, and the full glassy sample with a diameter of 5 mm could be fabricated by copper mold casting. The (Fe,Co)-Nb-Gd-B glassy alloys exhibited good soft magnetic properties, i.e., rather high saturation magnetization of 0.86-0.91 T, low coercive force below 5.0 A/m, and low saturated magnetostriction of 6-13 × 10^-6. In addition, the glassy alloys also possessed very high compressive fracture strength of 3821-4112 MPa and high Vickers hardness of 1028-1065.

Original language	English
Pages (from-to)	S129-S131
Journal	Journal of Alloys and Compounds
Volume	504
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jallcom.2010.02.068
Publication status	Published - 2010 Aug 1

Keywords

Fe-based alloy
Glass transition
Glass-forming ability
Magnetic property
Metallic glass

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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@article{6abe7e5b3cb348e7846140a3099e23eb,

title = "Effect of Co concentration on thermal stability and magnetic properties of (Fe,Co)-Nb-Gd-B glassy alloys",

abstract = "A two-stage-like glass transition phenomenon attenuated gradually with an increase in Co content in (Fe1-yCoy)67.5Nb 4Gd3.5B25 (y = 0.1-0.5) glassy alloys, and disappeared for the alloy with y = 0.5, resulting in a large supercooled liquid region of 102 K. As the Co content increases, the liquidus temperature decreases gradually, and the reduced glass transition temperature increases, indicating the enhancement of glass-forming ability (GFA). The best GFA was obtained for alloy with y = 0.5, and the full glassy sample with a diameter of 5 mm could be fabricated by copper mold casting. The (Fe,Co)-Nb-Gd-B glassy alloys exhibited good soft magnetic properties, i.e., rather high saturation magnetization of 0.86-0.91 T, low coercive force below 5.0 A/m, and low saturated magnetostriction of 6-13 × 10-6. In addition, the glassy alloys also possessed very high compressive fracture strength of 3821-4112 MPa and high Vickers hardness of 1028-1065.",

keywords = "Fe-based alloy, Glass transition, Glass-forming ability, Magnetic property, Metallic glass",

author = "Fei Jia and Wei Zhang and Xingguo Zhang and Guoqiang Xie and Hisamichi Kimura and Akihiro Makino and Akihisa Inoue",

year = "2010",

month = aug,

day = "1",

doi = "10.1016/j.jallcom.2010.02.068",

language = "English",

volume = "504",

pages = "S129--S131",

journal = "Journal of Alloys and Compounds",

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TY - JOUR

T1 - Effect of Co concentration on thermal stability and magnetic properties of (Fe,Co)-Nb-Gd-B glassy alloys

AU - Jia, Fei

AU - Zhang, Wei

AU - Zhang, Xingguo

AU - Xie, Guoqiang

AU - Kimura, Hisamichi

AU - Makino, Akihiro

AU - Inoue, Akihisa

PY - 2010/8/1

Y1 - 2010/8/1

N2 - A two-stage-like glass transition phenomenon attenuated gradually with an increase in Co content in (Fe1-yCoy)67.5Nb 4Gd3.5B25 (y = 0.1-0.5) glassy alloys, and disappeared for the alloy with y = 0.5, resulting in a large supercooled liquid region of 102 K. As the Co content increases, the liquidus temperature decreases gradually, and the reduced glass transition temperature increases, indicating the enhancement of glass-forming ability (GFA). The best GFA was obtained for alloy with y = 0.5, and the full glassy sample with a diameter of 5 mm could be fabricated by copper mold casting. The (Fe,Co)-Nb-Gd-B glassy alloys exhibited good soft magnetic properties, i.e., rather high saturation magnetization of 0.86-0.91 T, low coercive force below 5.0 A/m, and low saturated magnetostriction of 6-13 × 10-6. In addition, the glassy alloys also possessed very high compressive fracture strength of 3821-4112 MPa and high Vickers hardness of 1028-1065.

AB - A two-stage-like glass transition phenomenon attenuated gradually with an increase in Co content in (Fe1-yCoy)67.5Nb 4Gd3.5B25 (y = 0.1-0.5) glassy alloys, and disappeared for the alloy with y = 0.5, resulting in a large supercooled liquid region of 102 K. As the Co content increases, the liquidus temperature decreases gradually, and the reduced glass transition temperature increases, indicating the enhancement of glass-forming ability (GFA). The best GFA was obtained for alloy with y = 0.5, and the full glassy sample with a diameter of 5 mm could be fabricated by copper mold casting. The (Fe,Co)-Nb-Gd-B glassy alloys exhibited good soft magnetic properties, i.e., rather high saturation magnetization of 0.86-0.91 T, low coercive force below 5.0 A/m, and low saturated magnetostriction of 6-13 × 10-6. In addition, the glassy alloys also possessed very high compressive fracture strength of 3821-4112 MPa and high Vickers hardness of 1028-1065.

KW - Fe-based alloy

KW - Glass transition

KW - Glass-forming ability

KW - Magnetic property

KW - Metallic glass

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