Quasi-static and dynamic deformation of an in-situ Ti-based metallic glass composite in supercooled liquid region

J. Bai; J. S. Li; J. Wang; X. Xie; R. Feng; H. Y. Diao; R. Wei; H. C. Kou; P. K. Liaw

doi:10.1016/j.jallcom.2016.04.062

Quasi-static and dynamic deformation of an in-situ Ti-based metallic glass composite in supercooled liquid region

J. Bai, J. S. Li, J. Wang, X. Xie, R. Feng, H. Y. Diao, R. Wei, H. C. Kou, P. K. Liaw

School of Materials Sience and Engineering

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

15 Scopus citations

Abstract

The quasi-static and dynamic deformation behaviors of the Ti-based bulk metallic glass (BMG) composite (Ti₄₈Zr₂₀Nb₁₂Cu₅Be₁₅) were investigated in the supercooled liquid region. The present BMG composite exhibits homogenous viscous flow under quasi-static deformation, but shear-band dominated inhomogeneous plastic deformation upon dynamic loading. With the increase of the temperature, the flow stress decreases in both quasi-static and dynamic conditions. Due to the effective plastic accommodation of dendrites to the glass matrix, characteristic of the formation of shear steps and multiple dislocations, the remarkable plasticity under dynamic deformation has been obtained in the present BMG composite in SLR. The constitutive equation for the present BMG composite upon quasi-static loading is obtained. Upon dynamic loading, the flow stress approximately follows a linear relationship with the temperature: σ (MPa) ≈ 2,791-2.11T(K).

Original language	English
Pages (from-to)	239-246
Number of pages	8
Journal	Journal of Alloys and Compounds
Volume	679
DOIs	https://doi.org/10.1016/j.jallcom.2016.04.062
State	Published - 15 Sep 2016

Keywords

Composite materials
Mechanical properties
Metallic glasses
Strain
Supercooled liquid region

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10.1016/j.jallcom.2016.04.062

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title = "Quasi-static and dynamic deformation of an in-situ Ti-based metallic glass composite in supercooled liquid region",

abstract = "The quasi-static and dynamic deformation behaviors of the Ti-based bulk metallic glass (BMG) composite (Ti48Zr20Nb12Cu5Be15) were investigated in the supercooled liquid region. The present BMG composite exhibits homogenous viscous flow under quasi-static deformation, but shear-band dominated inhomogeneous plastic deformation upon dynamic loading. With the increase of the temperature, the flow stress decreases in both quasi-static and dynamic conditions. Due to the effective plastic accommodation of dendrites to the glass matrix, characteristic of the formation of shear steps and multiple dislocations, the remarkable plasticity under dynamic deformation has been obtained in the present BMG composite in SLR. The constitutive equation for the present BMG composite upon quasi-static loading is obtained. Upon dynamic loading, the flow stress approximately follows a linear relationship with the temperature: σ (MPa) ≈ 2,791-2.11T(K).",

keywords = "Composite materials, Mechanical properties, Metallic glasses, Strain, Supercooled liquid region",

author = "J. Bai and Li, {J. S.} and J. Wang and X. Xie and R. Feng and Diao, {H. Y.} and R. Wei and Kou, {H. C.} and Liaw, {P. K.}",

year = "2016",

month = sep,

day = "15",

doi = "10.1016/j.jallcom.2016.04.062",

language = "英语",

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pages = "239--246",

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T1 - Quasi-static and dynamic deformation of an in-situ Ti-based metallic glass composite in supercooled liquid region

AU - Bai, J.

AU - Li, J. S.

AU - Wang, J.

AU - Xie, X.

AU - Feng, R.

AU - Diao, H. Y.

AU - Wei, R.

AU - Kou, H. C.

AU - Liaw, P. K.

PY - 2016/9/15

Y1 - 2016/9/15

N2 - The quasi-static and dynamic deformation behaviors of the Ti-based bulk metallic glass (BMG) composite (Ti48Zr20Nb12Cu5Be15) were investigated in the supercooled liquid region. The present BMG composite exhibits homogenous viscous flow under quasi-static deformation, but shear-band dominated inhomogeneous plastic deformation upon dynamic loading. With the increase of the temperature, the flow stress decreases in both quasi-static and dynamic conditions. Due to the effective plastic accommodation of dendrites to the glass matrix, characteristic of the formation of shear steps and multiple dislocations, the remarkable plasticity under dynamic deformation has been obtained in the present BMG composite in SLR. The constitutive equation for the present BMG composite upon quasi-static loading is obtained. Upon dynamic loading, the flow stress approximately follows a linear relationship with the temperature: σ (MPa) ≈ 2,791-2.11T(K).

AB - The quasi-static and dynamic deformation behaviors of the Ti-based bulk metallic glass (BMG) composite (Ti48Zr20Nb12Cu5Be15) were investigated in the supercooled liquid region. The present BMG composite exhibits homogenous viscous flow under quasi-static deformation, but shear-band dominated inhomogeneous plastic deformation upon dynamic loading. With the increase of the temperature, the flow stress decreases in both quasi-static and dynamic conditions. Due to the effective plastic accommodation of dendrites to the glass matrix, characteristic of the formation of shear steps and multiple dislocations, the remarkable plasticity under dynamic deformation has been obtained in the present BMG composite in SLR. The constitutive equation for the present BMG composite upon quasi-static loading is obtained. Upon dynamic loading, the flow stress approximately follows a linear relationship with the temperature: σ (MPa) ≈ 2,791-2.11T(K).

KW - Composite materials

KW - Mechanical properties

KW - Metallic glasses

KW - Strain

KW - Supercooled liquid region

UR - http://www.scopus.com/inward/record.url?scp=84963894647&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2016.04.062

DO - 10.1016/j.jallcom.2016.04.062

M3 - 文章

AN - SCOPUS:84963894647

SN - 0925-8388

VL - 679

SP - 239

EP - 246

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Quasi-static and dynamic deformation of an in-situ Ti-based metallic glass composite in supercooled liquid region

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Keywords

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