Study of the structural relaxation-induced embrittlement of hypoeutectic Zr-Cu-Al ternary bulk glassy alloys

Yoshihiko Yokoyama; Tohru Yamasaki; Peter K. Liaw; Akihisa Inoue

doi:10.1016/j.actamat.2008.08.026

Study of the structural relaxation-induced embrittlement of hypoeutectic Zr-Cu-Al ternary bulk glassy alloys

Yoshihiko Yokoyama, Tohru Yamasaki, Peter K. Liaw, Akihisa Inoue

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

Highly reliable mechanical properties are the most important factors on which the industrial use of bulk glassy alloys (BGAs) depends. Most BGAs exhibit degradation of their mechanical properties due to structural relaxation, which easily occurs during enlargement and annealing. Although structural relaxation is usually accompanied with severe embrittlement, from the tensile fracture strain and the Charpy impact value, we have found that hypoeutectic BGAs exhibit no degradation of ductility and toughness even after complete structural relaxation. The fatigue behavior of hypoeutectic BGAs remains unchanged even after complete structural relaxation.

Original language	English
Pages (from-to)	6097-6108
Number of pages	12
Journal	Acta Materialia
Volume	56
Issue number	20
DOIs	https://doi.org/10.1016/j.actamat.2008.08.026
Publication status	Published - 2008 Dec 1

Keywords

Charpy impact test
Fatigue test
Hypoeutectic Zr-Cu-Al bulk glassy alloy
No structural relaxation-induced embrittlement
Tensile test

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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abstract = "Highly reliable mechanical properties are the most important factors on which the industrial use of bulk glassy alloys (BGAs) depends. Most BGAs exhibit degradation of their mechanical properties due to structural relaxation, which easily occurs during enlargement and annealing. Although structural relaxation is usually accompanied with severe embrittlement, from the tensile fracture strain and the Charpy impact value, we have found that hypoeutectic BGAs exhibit no degradation of ductility and toughness even after complete structural relaxation. The fatigue behavior of hypoeutectic BGAs remains unchanged even after complete structural relaxation.",

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AU - Yamasaki, Tohru

AU - Liaw, Peter K.

AU - Inoue, Akihisa

PY - 2008/12/1

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AB - Highly reliable mechanical properties are the most important factors on which the industrial use of bulk glassy alloys (BGAs) depends. Most BGAs exhibit degradation of their mechanical properties due to structural relaxation, which easily occurs during enlargement and annealing. Although structural relaxation is usually accompanied with severe embrittlement, from the tensile fracture strain and the Charpy impact value, we have found that hypoeutectic BGAs exhibit no degradation of ductility and toughness even after complete structural relaxation. The fatigue behavior of hypoeutectic BGAs remains unchanged even after complete structural relaxation.

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