Excellent thermal stability and bulk glass forming ability of Fe-B-Nb-Y soft magnetic metallic glass

Sangmin Lee; Hidemi Kato; Takeshi Kubota; Kunio Yubuta; Akihiro Makino; Akihisa Inoue

doi:10.2320/matertrans.MBW200732

Excellent thermal stability and bulk glass forming ability of Fe-B-Nb-Y soft magnetic metallic glass

Sangmin Lee, Hidemi Kato, Takeshi Kubota, Kunio Yubuta, Akihiro Makino, Akihisa Inoue

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

51 Citations (Scopus)

Abstract

Effects of Y addition on the glass forming ability (GFA) of a Fe-B-Nb marginal glass former, and annealing effects on glassy/supercooled liquid phases as well as soft magnetic properties in the multicomponent Fe-B-Nb-Y alloy system were investigated. The origin of highly improved GFA in the multicomponent system is discussed with related to a characteristic exothermic phase transformation, chemical short range ordering, in the supercooled liquid region due to the positive heat of mixing between Nb-Y elements. The separating tendency between Nb and Y elements is considered to suppress precipitation of metastable Fe₂₃B₆ and α-Fe crystalline phases, thus to result in highly improving GFA and distinct high thermal stability against heat treatment of the alloy system. In addition, a glassy ring was fabricated by copper mold casting and magnetic properties were investigated before/after heat treatment.

Original language	English
Pages (from-to)	506-512
Number of pages	7
Journal	Materials Transactions
Volume	49
Issue number	3
DOIs	https://doi.org/10.2320/matertrans.MBW200732
Publication status	Published - Mar 2008
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2320/matertrans.MBW200732

Cite this

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title = "Excellent thermal stability and bulk glass forming ability of Fe-B-Nb-Y soft magnetic metallic glass",

abstract = "Effects of Y addition on the glass forming ability (GFA) of a Fe-B-Nb marginal glass former, and annealing effects on glassy/supercooled liquid phases as well as soft magnetic properties in the multicomponent Fe-B-Nb-Y alloy system were investigated. The origin of highly improved GFA in the multicomponent system is discussed with related to a characteristic exothermic phase transformation, chemical short range ordering, in the supercooled liquid region due to the positive heat of mixing between Nb-Y elements. The separating tendency between Nb and Y elements is considered to suppress precipitation of metastable Fe23B6 and α-Fe crystalline phases, thus to result in highly improving GFA and distinct high thermal stability against heat treatment of the alloy system. In addition, a glassy ring was fabricated by copper mold casting and magnetic properties were investigated before/after heat treatment.",

author = "Sangmin Lee and Hidemi Kato and Takeshi Kubota and Kunio Yubuta and Akihiro Makino and Akihisa Inoue",

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T1 - Excellent thermal stability and bulk glass forming ability of Fe-B-Nb-Y soft magnetic metallic glass

AU - Lee, Sangmin

AU - Kato, Hidemi

AU - Kubota, Takeshi

AU - Yubuta, Kunio

AU - Makino, Akihiro

AU - Inoue, Akihisa

PY - 2008/3

Y1 - 2008/3

N2 - Effects of Y addition on the glass forming ability (GFA) of a Fe-B-Nb marginal glass former, and annealing effects on glassy/supercooled liquid phases as well as soft magnetic properties in the multicomponent Fe-B-Nb-Y alloy system were investigated. The origin of highly improved GFA in the multicomponent system is discussed with related to a characteristic exothermic phase transformation, chemical short range ordering, in the supercooled liquid region due to the positive heat of mixing between Nb-Y elements. The separating tendency between Nb and Y elements is considered to suppress precipitation of metastable Fe23B6 and α-Fe crystalline phases, thus to result in highly improving GFA and distinct high thermal stability against heat treatment of the alloy system. In addition, a glassy ring was fabricated by copper mold casting and magnetic properties were investigated before/after heat treatment.

AB - Effects of Y addition on the glass forming ability (GFA) of a Fe-B-Nb marginal glass former, and annealing effects on glassy/supercooled liquid phases as well as soft magnetic properties in the multicomponent Fe-B-Nb-Y alloy system were investigated. The origin of highly improved GFA in the multicomponent system is discussed with related to a characteristic exothermic phase transformation, chemical short range ordering, in the supercooled liquid region due to the positive heat of mixing between Nb-Y elements. The separating tendency between Nb and Y elements is considered to suppress precipitation of metastable Fe23B6 and α-Fe crystalline phases, thus to result in highly improving GFA and distinct high thermal stability against heat treatment of the alloy system. In addition, a glassy ring was fabricated by copper mold casting and magnetic properties were investigated before/after heat treatment.

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Excellent thermal stability and bulk glass forming ability of Fe-B-Nb-Y soft magnetic metallic glass

Abstract

All Science Journal Classification (ASJC) codes

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