Homogeneous deformation of Ti41.5Cu37.5Ni 7.5Zr2.5Hf5Sn5Si1 bulk metallic glass in the supercooled liquid region

J. N. Mei; J. L. Soubeyroux; J. J. Blandin; J. S. Li; H. C. Kou; H. Z. Fu; L. Zhou

doi:10.1016/j.intermet.2010.09.005

Homogeneous deformation of Ti_41.5Cu_37.5Ni _7.5Zr_2.5Hf₅Sn₅Si₁ bulk metallic glass in the supercooled liquid region

J. N. Mei, J. L. Soubeyroux, J. J. Blandin, J. S. Li, H. C. Kou, H. Z. Fu, L. Zhou

材料学院

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33 引用（Scopus）

摘要

The homogeneous deformation behavior of Ti_41.5Cu _37.5Ni_7.5Zr_2.5Hf₅Sn ₅Si₁ BMG has been investigated by compression tests. The results show that its high-temperature deformation behavior is strongly dependent on strain rate and temperature, and there exists a transition from non-Newtonian flow to Newtonian flow with decrease in strain rate, which can be explained based on the transition state theory. In addition, this alloy can reach a large compressive strain than 0.8 at high strain rate; however the much higher flow stress and lower value of S parameter compared with typical BMGs indicates its worse formability in the SLR. A beneficial domain (temperature and strain rate) for optimum hot workability of this alloy has been roughly located by constructing the power dissipation efficiency map, where the power dissipation efficiency is larger than 0.8.

源语言	英语
页（从-至）	48-53
页数	6
期刊	Intermetallics
卷	19
期	1
DOI	https://doi.org/10.1016/j.intermet.2010.09.005
出版状态	已出版 - 1月 2011

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10.1016/j.intermet.2010.09.005

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title = "Homogeneous deformation of Ti41.5Cu37.5Ni 7.5Zr2.5Hf5Sn5Si1 bulk metallic glass in the supercooled liquid region",

abstract = "The homogeneous deformation behavior of Ti41.5Cu 37.5Ni7.5Zr2.5Hf5Sn 5Si1 BMG has been investigated by compression tests. The results show that its high-temperature deformation behavior is strongly dependent on strain rate and temperature, and there exists a transition from non-Newtonian flow to Newtonian flow with decrease in strain rate, which can be explained based on the transition state theory. In addition, this alloy can reach a large compressive strain than 0.8 at high strain rate; however the much higher flow stress and lower value of S parameter compared with typical BMGs indicates its worse formability in the SLR. A beneficial domain (temperature and strain rate) for optimum hot workability of this alloy has been roughly located by constructing the power dissipation efficiency map, where the power dissipation efficiency is larger than 0.8.",

keywords = "B. deformation map, B. mechanical properties at high temperatures, B. metallic glass, B. superplastic behavior",

author = "Mei, {J. N.} and Soubeyroux, {J. L.} and Blandin, {J. J.} and Li, {J. S.} and Kou, {H. C.} and Fu, {H. Z.} and L. Zhou",

year = "2011",

month = jan,

doi = "10.1016/j.intermet.2010.09.005",

language = "英语",

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T1 - Homogeneous deformation of Ti41.5Cu37.5Ni 7.5Zr2.5Hf5Sn5Si1 bulk metallic glass in the supercooled liquid region

AU - Mei, J. N.

AU - Soubeyroux, J. L.

AU - Blandin, J. J.

AU - Li, J. S.

AU - Kou, H. C.

AU - Fu, H. Z.

AU - Zhou, L.

PY - 2011/1

Y1 - 2011/1

N2 - The homogeneous deformation behavior of Ti41.5Cu 37.5Ni7.5Zr2.5Hf5Sn 5Si1 BMG has been investigated by compression tests. The results show that its high-temperature deformation behavior is strongly dependent on strain rate and temperature, and there exists a transition from non-Newtonian flow to Newtonian flow with decrease in strain rate, which can be explained based on the transition state theory. In addition, this alloy can reach a large compressive strain than 0.8 at high strain rate; however the much higher flow stress and lower value of S parameter compared with typical BMGs indicates its worse formability in the SLR. A beneficial domain (temperature and strain rate) for optimum hot workability of this alloy has been roughly located by constructing the power dissipation efficiency map, where the power dissipation efficiency is larger than 0.8.

AB - The homogeneous deformation behavior of Ti41.5Cu 37.5Ni7.5Zr2.5Hf5Sn 5Si1 BMG has been investigated by compression tests. The results show that its high-temperature deformation behavior is strongly dependent on strain rate and temperature, and there exists a transition from non-Newtonian flow to Newtonian flow with decrease in strain rate, which can be explained based on the transition state theory. In addition, this alloy can reach a large compressive strain than 0.8 at high strain rate; however the much higher flow stress and lower value of S parameter compared with typical BMGs indicates its worse formability in the SLR. A beneficial domain (temperature and strain rate) for optimum hot workability of this alloy has been roughly located by constructing the power dissipation efficiency map, where the power dissipation efficiency is larger than 0.8.

KW - B. deformation map

KW - B. mechanical properties at high temperatures

KW - B. metallic glass

KW - B. superplastic behavior

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U2 - 10.1016/j.intermet.2010.09.005

DO - 10.1016/j.intermet.2010.09.005

M3 - 文章

AN - SCOPUS:78349309805

SN - 0966-9795

VL - 19

SP - 48

EP - 53

JO - Intermetallics

JF - Intermetallics

IS - 1

ER -

Homogeneous deformation of Ti41.5Cu37.5Ni 7.5Zr2.5Hf5Sn5Si1 bulk metallic glass in the supercooled liquid region

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Homogeneous deformation of Ti_41.5Cu_37.5Ni _7.5Zr_2.5Hf₅Sn₅Si₁ bulk metallic glass in the supercooled liquid region