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(Fe,Co,Ni)–B–Si–Nb Bulk Glassy Alloy With Super-High Strength and Some Ductility [Article Retracted]

Published online by Cambridge University Press:  28 March 2011

Baolong Shen  and
Akihisa Inoue
Baolong Shen*
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan; and Research and Development Project, Core Research for Evolution Science and Technology (CREST), Japan Science and Technology Agency, Sendai 980-8577, Japan
Akihisa Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan; and Research and Development Project, Core Research for Evolution Science and Technology (CREST), Japan Science and Technology Agency, Sendai 980-8577, Japan
*
a)Address all correspondence to this author. e-mail: shen@imr.tohoku.ac.jp

Abstract

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Glassy [(Fe0.8Co0.1Ni0.1)0.75B0.2Si0.05]96Nb4 alloy rods with glass transition temperature of 835 K, followed by a large supercooled liquid region of 55 K were produced in the diameter range up to 2 mm by copper mold casting. The glassy alloy rods exhibit super-high true fracture strength of 4225 MPa combined with elastic strain of 0.02 and true plastic strain of 0.005. The super-high strength alloy simultaneously exhibits high magnetization of 1.1 T, low coercivity of 3 A/m, and high permeability of 1.8 × 104 at 1 kHz. The success of synthesizing a super-high strength Fe-based bulk glassy alloy with some compressive plastic strain and good soft magnetic properties is encouraging for future development of Fe-based bulk glassy alloys as new engineering and functional materials.

Keywords

DuctilityMetallic glassStrength
Type
Rapid Communications
Information
Journal of Materials Research , Volume 20 , Issue 1 , January 2005 , pp. 1 - 5
Copyright
Copyright © Materials Research Society 2004

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