Materials Transactions Online

Materials Transactions, Vol.48 No.05 (2007) pp.1157-1160
© 2007 The Japan Institute of Metals

Ductile Fe-Based Bulk Metallic Glass with Good Soft-Magnetic Properties

Tao Zhang, Fengjuan Liu, Shujie Pang and Ran Li

Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. China

We report a ductile Fe-Mo-P-C-B bulk metallic glass (BMG) with good soft-magnetic properties. The Fe-Mo-P-C-B BMG with high Poisson's ratio of 0.325 and low glass transition temperature of 708 K exhibits plastic strain up to 5.5% before final failure and high fracture strength of 3280 MPa in compression. The Fe-based BMG possesses high saturation magnetization of 1.1 T, low coercive force of 1.8 Am-1 and high permeability of 55300. The Fe-Mo-P-C-B BMG with this combination of noticeable ductility, high strength and good soft-magnetic properties previously not observed simultaneously in Fe-based glassy alloys has promising potential in functional and structural applications.

(Received 2007/1/19; Accepted 2007/3/12; Published 2007/4/25)

Keywords: Iron-based alloy, metallic glass, ductility, soft-magnetic property

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