High-Temperature Internal Friction of Metallic Glasses with Widely Different Glass-Forming Ability(Condensed matter : structure and mechanical and thermal properties)
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概要
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The internal friction (IF) of binary, ternary, quaternary, and quinary metallic glasses with widely different glass-forming ability (GFA) has been studied. A single-roller melt-spinning apparatus was used for preparing ribbon specimens. An inverted torsion pendulum was used in the IF measurement. The measurements were performed from room temperature, through the glass transition temperature, up to the crystallization temperature. The background IF monotonously increases with increasing temperature. The increase is of the thermal-activation type, and the activation energy E is determined. For alloys with higher GFA, the E value tends to be higher. IF is inversely proportional to the measurement frequency. The viscosity relaxation based on the Maxwell model is considered, and the relaxation time τ is determined. A linear relationship is seen between the logarithm of pre-exponential factor τ_o and the activation energy E. Explanations of these results and discussions concerned are presented.
- 社団法人日本物理学会の論文
- 2007-11-15
著者
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TAKEUCHI Shin
Department of Materials Science and Technology, Tokyo Gakugei University
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Takeuchi Shin
Department Of Materials Science And Technology Science University Of Tokyo
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Hiki Yosio
Department Of Physics Tokyo Institute Of Technology
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AIDA Tomohiko
Department of Materials Science and Technology, Science University of Tokyo
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Aida Tomohiko
Department Of Materials Science And Technology Science University Of Tokyo
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