Plasticity enhancement of an amorphous alloy driven by atomistic-scale phase separation

Sang Chul Lee; Kyou Hyun Kim; Hwi Jun Kim; Jae Chul Lee

Plasticity enhancement of an amorphous alloy driven by atomistic-scale phase separation

Sang Chul Lee, Kyou Hyun Kim, Hwi Jun Kim, Jae Chul Lee

GREEN SCHOOL (Graduate School of Energy and Environment)

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

1 Citation (Scopus)

Abstract

A bulk amorphous alloy, Zr₅₄Cu₃₆ Al₄Be₆, was synthesized. This alloy shows a yield strength of ∼1.8 GPa and a large plastic strain of ∼20.5%, which have hardly been observed in monolithic bulk amorphous alloys. Microstructures of this alloy were observed to investigate the origin of the extraordinary plasticity of the alloy. The alloy exhibited a unique microstructure characterized by atomistic-scale phase separation, which probably stems from the large difference in mixing enthalpy between the binary pairs of Zr-Be and Cu-Be. This paper discusses the effect of atomistic-scale phase separation on the enhanced plasticity of amorphous alloys.

Original language	English
Pages (from-to)	143-147
Number of pages	5
Journal	Journal of Korean Institute of Metals and Materials
Volume	45
Issue number	3
Publication status	Published - 2007 Mar

Keywords

Bulk amorphous alloy
Phase separation
Plasticity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Modelling and Simulation
Surfaces, Coatings and Films
Metals and Alloys

Cite this

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title = "Plasticity enhancement of an amorphous alloy driven by atomistic-scale phase separation",

abstract = "A bulk amorphous alloy, Zr54Cu36 Al4Be6, was synthesized. This alloy shows a yield strength of ∼1.8 GPa and a large plastic strain of ∼20.5%, which have hardly been observed in monolithic bulk amorphous alloys. Microstructures of this alloy were observed to investigate the origin of the extraordinary plasticity of the alloy. The alloy exhibited a unique microstructure characterized by atomistic-scale phase separation, which probably stems from the large difference in mixing enthalpy between the binary pairs of Zr-Be and Cu-Be. This paper discusses the effect of atomistic-scale phase separation on the enhanced plasticity of amorphous alloys.",

keywords = "Bulk amorphous alloy, Phase separation, Plasticity",

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AU - Lee, Sang Chul

AU - Kim, Kyou Hyun

AU - Kim, Hwi Jun

AU - Lee, Jae Chul

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Y1 - 2007/3

N2 - A bulk amorphous alloy, Zr54Cu36 Al4Be6, was synthesized. This alloy shows a yield strength of ∼1.8 GPa and a large plastic strain of ∼20.5%, which have hardly been observed in monolithic bulk amorphous alloys. Microstructures of this alloy were observed to investigate the origin of the extraordinary plasticity of the alloy. The alloy exhibited a unique microstructure characterized by atomistic-scale phase separation, which probably stems from the large difference in mixing enthalpy between the binary pairs of Zr-Be and Cu-Be. This paper discusses the effect of atomistic-scale phase separation on the enhanced plasticity of amorphous alloys.

AB - A bulk amorphous alloy, Zr54Cu36 Al4Be6, was synthesized. This alloy shows a yield strength of ∼1.8 GPa and a large plastic strain of ∼20.5%, which have hardly been observed in monolithic bulk amorphous alloys. Microstructures of this alloy were observed to investigate the origin of the extraordinary plasticity of the alloy. The alloy exhibited a unique microstructure characterized by atomistic-scale phase separation, which probably stems from the large difference in mixing enthalpy between the binary pairs of Zr-Be and Cu-Be. This paper discusses the effect of atomistic-scale phase separation on the enhanced plasticity of amorphous alloys.

KW - Bulk amorphous alloy

KW - Phase separation

KW - Plasticity

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M3 - Article

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JO - Journal of Korean Institute of Metals and Materials

JF - Journal of Korean Institute of Metals and Materials

IS - 3

ER -

Plasticity enhancement of an amorphous alloy driven by atomistic-scale phase separation

Abstract

Keywords

ASJC Scopus subject areas

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