The Effect of Frequency of Electromagnetic Vibrations on Vibrational Motion in Fe-Co-B-Si-Nb Bulk Metallic Glasses

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著者

    • Tamura Takuya TAMURA Takuya
    • Solidification Processing Group, Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST)
    • Kamikihara Daisuke KAMIKIHARA Daisuke
    • Solidification Processing Group, Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST)
    • Maehara Yuuki [他] MAEHARA Yuuki
    • Solidification Processing Group, Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST)
    • OMURA Naoki
    • Solidification Processing Group, Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST)
    • MIWA Kenji
    • Solidification Processing Group, Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST)

抄録

The method for producing Fe-Co-B-Si-Nb bulk metallic glasses using electromagnetic vibrations is effective in forming the metallic glass phase. The purpose of this study was to investigate the effects of the frequency of electromagnetic vibrations on the vibrational motion in Fe-Co-B-Si-Nb bulk metallic glasses. The amplitudes of the electromagnetic vibrations at 5 kHz were calculated to be on the order of micrometers, but those at higher frequencies were on the order of nanometers. It was found that the nanometer-sized amplitudes resulted in the disappearance of the increased cooling rate caused by electromagnetic vibrations observed at lower frequencies. When particles in the sample have lower electric resistance than the molten sample, these particles are considered to vibrate vigorously in the molten sample by Lorentz force because the electric current concentrates in those. It is suggested that this phenomenon is the reason electromagnetic vibrations decrease the number of crystal nuclei.

収録刊行物

  • Materials transactions  

    Materials transactions 48(2), 234-238, 2007-02-01 

    The Japan Institute of Metals and Materials

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各種コード

  • NII論文ID(NAID)
    10018508887
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    8623834
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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