Correlation between structural relaxation and shear transformation zone volume of a bulk metallic glass

D. Pan; Yoshihiko Yokoyama; T. Fujita; Y. H. Liu; S. Kohara; A. Inoue; M. W. Chen

doi:10.1063/1.3246151

Correlation between structural relaxation and shear transformation zone volume of a bulk metallic glass

D. Pan, Yoshihiko Yokoyama, T. Fujita, Y. H. Liu, S. Kohara, A. Inoue, M. W. Chen

材料科学高等研究所

研究成果: Article › 査読

58 被引用数 (Scopus)

抄録

The effect of structural relaxation on shear transformation zones (STZs) in a Zr70 Ni16 Cu6_Al8 glassy alloy is evaluated. Upon annealing, the measured STZ size dramatically decreases with moderate augment of mass density caused by the increase of icosahedra short-range orders. The greater atomic packing density gives rise to involvement of lesser atoms in the formation of STZs and thereby degradation of ductility. This study demonstrates that STZ volume is a key parameter reflecting the intrinsic relationship between atomic structure and mechanical properties of metallic glasses.

本文言語	English
論文番号	141909
ジャーナル	Applied Physics Letters
巻	95
号	14
DOI	https://doi.org/10.1063/1.3246151
出版ステータス	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3246151

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引用スタイル

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AU - Yokoyama, Yoshihiko

AU - Fujita, T.

AU - Liu, Y. H.

AU - Kohara, S.

AU - Inoue, A.

AU - Chen, M. W.

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AB - The effect of structural relaxation on shear transformation zones (STZs) in a Zr70 Ni16 Cu6Al8 glassy alloy is evaluated. Upon annealing, the measured STZ size dramatically decreases with moderate augment of mass density caused by the increase of icosahedra short-range orders. The greater atomic packing density gives rise to involvement of lesser atoms in the formation of STZs and thereby degradation of ductility. This study demonstrates that STZ volume is a key parameter reflecting the intrinsic relationship between atomic structure and mechanical properties of metallic glasses.

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