Optimisation of superplastic processing parameters for (Cu43Zr48Al9)98Y2 bulk metallic glasses

Bing Li; Xuanxuan Xu; Hucheng Zhang; Ke Yang; Xinhui Fan; Jinshan Li

doi:10.1016/j.jre.2018.05.007

Optimisation of superplastic processing parameters for (Cu₄₃Zr₄₈Al₉)₉₈Y₂ bulk metallic glasses

Bing Li, Xuanxuan Xu, Hucheng Zhang, Ke Yang, Xinhui Fan, Jinshan Li

School of Materials Sience and Engineering

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

7 Scopus citations

Abstract

In this study, hot compression tests of (Cu₄₃Zr₄₈Al₉)₉₈Y₂ bulk metallic glasses (BMGs) were performed, and their microstructure and thermal properties after the deformation were studied to explore the appropriate range of their optimum processing parameters. The experimental results show that the superplastic deformation of (Cu₄₃Zr₄₈Al₉)₉₈Y₂ bulk metallic glasses depends mainly on the temperature and strain rate. It is suitable for superplastic processing when the alloys are in the state of Newtonian flow and do not crystallise. The appropriate processing parameters of (Cu₄₃Zr₄₈Al₉)₉₈Y₂ BMGs are the temperatures and strain rates, which are below the “dividing line”. And when the temperature is above 733 K, the strain rate must be >1 × 10⁻³ s⁻¹.

Original language	English
Pages (from-to)	95-100
Number of pages	6
Journal	Journal of Rare Earths
Volume	37
Issue number	1
DOIs	https://doi.org/10.1016/j.jre.2018.05.007
State	Published - Jan 2019

Keywords

Bulk metallic glasses
Crystallisation behaviour
Flow behaviour
Rare earths
Superplastic

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10.1016/j.jre.2018.05.007

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title = "Optimisation of superplastic processing parameters for (Cu43Zr48Al9)98Y2 bulk metallic glasses",

abstract = "In this study, hot compression tests of (Cu43Zr48Al9)98Y2 bulk metallic glasses (BMGs) were performed, and their microstructure and thermal properties after the deformation were studied to explore the appropriate range of their optimum processing parameters. The experimental results show that the superplastic deformation of (Cu43Zr48Al9)98Y2 bulk metallic glasses depends mainly on the temperature and strain rate. It is suitable for superplastic processing when the alloys are in the state of Newtonian flow and do not crystallise. The appropriate processing parameters of (Cu43Zr48Al9)98Y2 BMGs are the temperatures and strain rates, which are below the “dividing line”. And when the temperature is above 733 K, the strain rate must be >1 × 10−3 s−1.",

keywords = "Bulk metallic glasses, Crystallisation behaviour, Flow behaviour, Rare earths, Superplastic",

author = "Bing Li and Xuanxuan Xu and Hucheng Zhang and Ke Yang and Xinhui Fan and Jinshan Li",

note = "Publisher Copyright: {\textcopyright} 2019",

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doi = "10.1016/j.jre.2018.05.007",

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AU - Li, Bing

AU - Xu, Xuanxuan

AU - Zhang, Hucheng

AU - Yang, Ke

AU - Fan, Xinhui

AU - Li, Jinshan

PY - 2019/1

Y1 - 2019/1

N2 - In this study, hot compression tests of (Cu43Zr48Al9)98Y2 bulk metallic glasses (BMGs) were performed, and their microstructure and thermal properties after the deformation were studied to explore the appropriate range of their optimum processing parameters. The experimental results show that the superplastic deformation of (Cu43Zr48Al9)98Y2 bulk metallic glasses depends mainly on the temperature and strain rate. It is suitable for superplastic processing when the alloys are in the state of Newtonian flow and do not crystallise. The appropriate processing parameters of (Cu43Zr48Al9)98Y2 BMGs are the temperatures and strain rates, which are below the “dividing line”. And when the temperature is above 733 K, the strain rate must be >1 × 10−3 s−1.

AB - In this study, hot compression tests of (Cu43Zr48Al9)98Y2 bulk metallic glasses (BMGs) were performed, and their microstructure and thermal properties after the deformation were studied to explore the appropriate range of their optimum processing parameters. The experimental results show that the superplastic deformation of (Cu43Zr48Al9)98Y2 bulk metallic glasses depends mainly on the temperature and strain rate. It is suitable for superplastic processing when the alloys are in the state of Newtonian flow and do not crystallise. The appropriate processing parameters of (Cu43Zr48Al9)98Y2 BMGs are the temperatures and strain rates, which are below the “dividing line”. And when the temperature is above 733 K, the strain rate must be >1 × 10−3 s−1.

KW - Bulk metallic glasses

KW - Crystallisation behaviour

KW - Flow behaviour

KW - Rare earths

KW - Superplastic

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Optimisation of superplastic processing parameters for (Cu₄₃Zr₄₈Al₉)₉₈Y₂ bulk metallic glasses

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Keywords

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