Ultrasound-Induced Structural Anomaly of Supercooled Liquid in Some Bulk Metallic Glasses

• Ichitsubo Tetsu

  Institute for Materials Research, Tohoku University

• Matsubara Eiichiro

  Institute for Materials Research, Tohoku University

• Anazawa Kazuhiro

  Institute for Materials Research, Tohoku University

• Nishiyama Nobuyuki

  RIMCOF Tohoku University Laboratory, R&D Institute of Metals and Composites for Future Industries

• Kai Satoshi

  Graduate School of Engineering Science, Osaka University

• Hirao Masahiko

  Graduate School of Engineering Science, Osaka University

抄録

We have studied the elastic and anelastic behavior of fully structural-relaxed Pd₄₀Ni₄₀P₂₀ and Zr₅₅Al₁₀Ni₅Cu₃₀ bulk metallic glasses using high-frequency ultrasound vibrations at elevated temperature, and found that the structural anomaly is induced by ultrasound vibrations in a supercooled liquid region. The electromagnetic acoustic resonance and resonant ultrasound spectroscopy methods were employed to measure the resonant spectra and ultrasonic attenuation coefficients. When the glassy samples are subjected to sub/low-MHz ultrasound vibrations during heating process, the crystallization is accelerated around their glass transition temperatures, and with this abrupt structural change, irregular Λ-shaped internal friction peaks appear. From the standpoint of ultrasonic echography, the glass transition and crystallization temperatures are considerably lowered by ultrasound vibrations in the present measurements.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 45 (4), 1189-1193, 2004

  公益社団法人 日本金属学会

キーワード

• elastic and anelastic properties
• bulk metallic glasses
• structural relaxation
• crystallization
• ultrasonic measurements

詳細情報

• CRID: 1390001204250311680
• NII論文ID: 130004452443
• NII論文ID: 10012905921
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.45.1189
• COI: 1:CAS:528:DC%2BD2cXksVyhurc%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6927322
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6927322
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/45/4/45_4_1189/_pdf
• 本文言語コード: en
• データソース種別:
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