Bulk Fe-Based Glassy Alloys Prepared by Casting and Powder Metallurgy

  1. Prof. J. V. Wood4,
  2. Prof. Dr. L. Schultz5 and
  3. Prof. Dr. D. M. Herlach6
  1. Takao Mizushima1,
  2. Kazuaki Ikarashi1,
  3. Shoji Yoshida1,
  4. Akihiro Makino1,2 and
  5. Akihisa Inoue1,3

Published Online: 25 APR 2006

DOI: 10.1002/3527607277.ch8

Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8

Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8

How to Cite

Mizushima, T., Ikarashi, K., Yoshida, S., Makino, A. and Inoue, A. (2000) Bulk Fe-Based Glassy Alloys Prepared by Casting and Powder Metallurgy, in Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8 (eds J. V. Wood, L. Schultz and D. M. Herlach), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607277.ch8

Editor Information

  1. 4

    University of Nottingham, Division of Materials, Nottingham NG7 2RD, United Kingdom

  2. 5

    Institut für Festkorper- und Werkstofforschung Dresden e.V., Postfach 270016, 01171 Dresden, Germany

  3. 6

    Deutsches Zentrum für Luft- und Raumfahrt e.V., Linder Hohe, 51170 Köln, Germany

Author Information

  1. 1

    Alps Electric Co., Ltd., Nagaoka 940-8572, Japan,

  2. 2

    Akita Prefectureal Univ., Honjou 015-0055, Japan

  3. 3

    Tohoku Univ., Sendai 980-8577, Japan

Publication History

  1. Published Online: 25 APR 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301935

Online ISBN: 9783527607273

SEARCH

Keywords:

  • bulk Fe-based glassy alloys;
  • casting;
  • powder metallurgy

Summary

Structure and soft magnetic properties were investigated of bulk Fe70Al5Ga2P9.65C5.75B4.6Si3 glassy alloys prepared by copper mold casting and consolidating amorphous alloy powders using an electric-pulse-current-sintering method. The ring shape sample with an outer diameter of 10 mm, an inner diameter of 6 mm and a thickness of 1 mm prepared by casting consists only of single amorphous phase. The thermal properties of the amorphous bulk alloy are good agreement with those of the melt-spun amorphous ribbon. Saturation magnetization (Is), maximum permeability (μmax) and coercivity (Hc) for the ring sample in as cast state are about 1.19 T, 110000 and 2.2 A/m, respectively. On the other hand, the disk shape sample with an outer diameter of 18 mm and a thickness of 1 mm prepared by sintering at the temperature range of supercooled liquid region also consists only of single amorphous phase. This sample has a very high relative density over 99%. The Is, μmax and Hc are 1.17 T, 8000 and 12 A/m, respectively. It is presumed that the good soft magnetic properties for these bulk amorphous samples are due to their high structural homogeneity and high workability based on the large glass forming ability caused by appearance of supercooled liquid region below crystallization temperature.