Superhigh strength and good soft-magnetic properties of (Fe,Co)–B–Si–Nb bulk glassy alloys with high glass-forming ability

Fe-based bulk ferromagnetic glassy alloys with diameters up to 5mm were formed in [(Fe1−xCox)0.75B0.2Si0.05]96Nb4 system by the copper mold casting method. The substitution of Co for Fe caused an increase of glass-forming ability as well as an improvement of mechanical and magnetic properties. The b...

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Bibliographic Details
Published in:Applied physics letters 2004-11, Vol.85 (21), p.4911-4913
Main Authors: Shen, Baolong, Inoue, Akihisa, Chang, Chuntao
Format: Article
Language:English
Subjects:
Amorphous alloys
Cobalt
Coercivity
Curie temperature
Ferromagnetism
Fracture strength
Glass formation
Iron
Magnetic properties
Magnetic saturation
Modulus of elasticity
Plastic deformation
Strain
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Summary:Fe-based bulk ferromagnetic glassy alloys with diameters up to 5mm were formed in [(Fe1−xCox)0.75B0.2Si0.05]96Nb4 system by the copper mold casting method. The substitution of Co for Fe caused an increase of glass-forming ability as well as an improvement of mechanical and magnetic properties. The bulk glassy alloys exhibited superhigh fracture strength of 3900–4250MPa, Young’s modulus of 190–210GPa, elastic strain of 0.02, and plastic strain of 0.0025. The bulk glassy alloys also exhibited good soft magnetic properties, i.e., saturation magnetization of 0.84–1.13T, low coercive force of 1.5–2.7A∕m, high permeability exceeding 1.2×104, and Curie temperature of 600–690K. At the request of the authors, this article is being retracted effective 29 March 2011.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1827349