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Formation, and mechanical and magnetic properties of bulk ferromagnetic Fe-Nb-B-Y-(Zr, Co) alloys

Published online by Cambridge University Press:  01 April 2006

J.M. Park ,
J.S. Park ,
D.H. Kim ,
J-H. Kim  and
E. Fleury
J.M. Park
Affiliation:
Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seodaemun-gu, Seoul 120-749, Korea
J.S. Park
Affiliation:
Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seodaemun-gu, Seoul 120-749, Korea
D.H. Kim*
Affiliation:
Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seodaemun-gu, Seoul 120-749, Korea
J-H. Kim
Affiliation:
Small Business Corporation, Ulsan Regional Headquarters, Business Incubation Center, Ulsan 680-749, Korea
E. Fleury
Affiliation:
Advanced Metal Research Center, Korea Institute of Science and Technology, Seoul 130-650 Korea
*
a) Address all correspondence to this author. e-mail: dohkim@yonsei.ac.kr
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Abstract

Fe element was partially substituted by Zr and Co in an attempt to enhance the glass-forming ability, and mechanical and soft magnetic properties of Fe74-xNb6B17Y3(Zr, Co)x (x = 3, 5, 8) amorphous alloys. Both partial replacements resulted in the enhancement of the glass-forming ability, and 3-mm diameter rods with a fully amorphous structure were prepared by a copper mold casting method. Zr and Co containing Fe-based bulk amorphous alloys exhibited high compressive fracture strength of about 4 and 3.5 GPa, respectively. However, Zr and Co induced different effects on the magnetic properties. Whereas the partial replacement of Fe by Zr was found to decrease dramatically the saturation magnetization, the partial replacement of Fe by Co provided an increase of about 25% of the saturation magnetization.

Keywords

AmorphousFerromagneticStrength
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 4 , April 2006 , pp. 1019 - 1024
Copyright
Copyright © Materials Research Society 2006

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