Bulk Metallic Glass Formation, Crystallization, and Magnetic Properties of RE4Fe72B22M2 Alloys

Abstract:

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The RE4Fe72B22M2 (RE=Y, Dy or Nd; M=Nb or Ta) alloys in ribbon and rod forms were prepared by melt spinning and water cooling copper mold casting methods, respectively. Amorphous structure was observed in all ribbon samples, but the results from rod samples indicated that the composition has an important effect on the glass formability. All rod samples with RE=Y or Nd were partly amorphous, while bulk metallic glass (BMG) rod with a diameter of 2 mm was obtained for the Dy4Fe72B22Nb2 alloy. The rare earth and doping elements on the glass formability have been discussed. The effects of post-annealing on the microstructure and magnetic properties of these alloys have been investigated. The results presented here provide a viable method to get fully dense bulk hard magnets.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

1062-1065

DOI:

10.4028/www.scientific.net/MSF.654-656.1062

Citation:

X. H. Cui et al., "Bulk Metallic Glass Formation, Crystallization, and Magnetic Properties of RE4Fe72B22M2 Alloys", Materials Science Forum, Vols. 654-656, pp. 1062-1065, 2010

Online since:

June 2010

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$35.00

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