A Cu-based amorphous alloy with a simultaneous improvement in its glass forming ability and plasticity

Kyou Hyun Kim; Seok Woo Lee; Jae Pyoung Ahn; Eric Fleury; Yu Chan Kim; Jae Chul Lee

doi:10.1007/BF03027818

A Cu-based amorphous alloy with a simultaneous improvement in its glass forming ability and plasticity

Kyou Hyun Kim, Seok Woo Lee, Jae Pyoung Ahn, Eric Fleury, Yu Chan Kim, Jae Chul Lee

Department of Materials Science and Engineering

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

36 Citations (Scopus)

Abstract

An amorphous alloy, Cu₄₃Zr₄₃Al₇Be ₇, was synthesized. The alloy showed a large supercooled liquid region (115°C), a significant glass forming ability (Φ12 mm) and considerable strain to fracture (8-9%), which collectively have not been observed in other Cu-based amorphous alloys. The alloy has a unique microstructure characterized by atomic-scale phase separation, which most likely resulted from the large difference in the mixing enthalpy between the binary pairs. This study discusses a possible mechanism underlying the simultaneous enhancement in the GFA and plasticity by considering the atomic packing state and atomic-scale compositional separation resulting from Al and Be.

Original language	English
Pages (from-to)	21-24
Number of pages	4
Journal	Metals and Materials International
Volume	13
Issue number	1
DOIs	https://doi.org/10.1007/BF03027818
Publication status	Published - 2007 Feb

Bibliographical note

Funding Information:
This research was supported by grants from the Nano-structured Materials Technology Development under the 21st Century Frontier R&D Programs (06K1501-01210), and the Basic Research Program (R01-2004-000-10891-0) of Ministry of Science and Technology, Korea.

Keywords

Bulk amorphous alloy
Glass forming ability
Liquid phase separation
Plasticity

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.1007/BF03027818

Cite this

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title = "A Cu-based amorphous alloy with a simultaneous improvement in its glass forming ability and plasticity",

abstract = "An amorphous alloy, Cu43Zr43Al7Be 7, was synthesized. The alloy showed a large supercooled liquid region (115°C), a significant glass forming ability (Φ12 mm) and considerable strain to fracture (8-9%), which collectively have not been observed in other Cu-based amorphous alloys. The alloy has a unique microstructure characterized by atomic-scale phase separation, which most likely resulted from the large difference in the mixing enthalpy between the binary pairs. This study discusses a possible mechanism underlying the simultaneous enhancement in the GFA and plasticity by considering the atomic packing state and atomic-scale compositional separation resulting from Al and Be.",

keywords = "Bulk amorphous alloy, Glass forming ability, Liquid phase separation, Plasticity",

author = "Kim, {Kyou Hyun} and Lee, {Seok Woo} and Ahn, {Jae Pyoung} and Eric Fleury and Kim, {Yu Chan} and Lee, {Jae Chul}",

note = "Funding Information: This research was supported by grants from the Nano-structured Materials Technology Development under the 21st Century Frontier R&D Programs (06K1501-01210), and the Basic Research Program (R01-2004-000-10891-0) of Ministry of Science and Technology, Korea.",

year = "2007",

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doi = "10.1007/BF03027818",

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journal = "Metals and Materials International",

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AU - Kim, Kyou Hyun

AU - Lee, Seok Woo

AU - Ahn, Jae Pyoung

AU - Fleury, Eric

AU - Kim, Yu Chan

AU - Lee, Jae Chul

N1 - Funding Information: This research was supported by grants from the Nano-structured Materials Technology Development under the 21st Century Frontier R&D Programs (06K1501-01210), and the Basic Research Program (R01-2004-000-10891-0) of Ministry of Science and Technology, Korea.

PY - 2007/2

Y1 - 2007/2

N2 - An amorphous alloy, Cu43Zr43Al7Be 7, was synthesized. The alloy showed a large supercooled liquid region (115°C), a significant glass forming ability (Φ12 mm) and considerable strain to fracture (8-9%), which collectively have not been observed in other Cu-based amorphous alloys. The alloy has a unique microstructure characterized by atomic-scale phase separation, which most likely resulted from the large difference in the mixing enthalpy between the binary pairs. This study discusses a possible mechanism underlying the simultaneous enhancement in the GFA and plasticity by considering the atomic packing state and atomic-scale compositional separation resulting from Al and Be.

AB - An amorphous alloy, Cu43Zr43Al7Be 7, was synthesized. The alloy showed a large supercooled liquid region (115°C), a significant glass forming ability (Φ12 mm) and considerable strain to fracture (8-9%), which collectively have not been observed in other Cu-based amorphous alloys. The alloy has a unique microstructure characterized by atomic-scale phase separation, which most likely resulted from the large difference in the mixing enthalpy between the binary pairs. This study discusses a possible mechanism underlying the simultaneous enhancement in the GFA and plasticity by considering the atomic packing state and atomic-scale compositional separation resulting from Al and Be.

KW - Bulk amorphous alloy

KW - Glass forming ability

KW - Liquid phase separation

KW - Plasticity

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DO - 10.1007/BF03027818

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SP - 21

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JO - Metals and Materials International

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ER -

A Cu-based amorphous alloy with a simultaneous improvement in its glass forming ability and plasticity

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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