Temperature dependent dynamic flow behavior of an in-situ Ti-based bulk metallic glass composite

J. Bai; J. S. Li; J. Wang; H. C. Kou; P. K. Liaw

doi:10.1016/j.msea.2014.12.100

Temperature dependent dynamic flow behavior of an in-situ Ti-based bulk metallic glass composite

J. Bai, J. S. Li, J. Wang, H. C. Kou, P. K. Liaw

School of Materials Sience and Engineering

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

3 Scopus citations

Abstract

The deformation behavior of in-situ Ti₄₈Zr₂₀Nb₁₂Cu₅Be₁₅ bulk metallic glass (BMG) composites was investigated within a wide range of temperature from 77K to 573K upon dynamic loading. The present BMG composites exhibit good plasticity (about 11%) above the ambient temperature, but ductile to brittle transition occurs as the temperature lows. Further studies reveal that the deteriorated ability of dendrites to hinder the propagation of shear bands at low temperature is responsible for the present transition. With the decrease of temperature, the yield stress of the present BMG composite increases dramatically and the lower temperature also yields more obvious temperature rising in the fracture surfaces.

Original language	English
Pages (from-to)	21-26
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	627
DOIs	https://doi.org/10.1016/j.msea.2014.12.100
State	Published - 1 Mar 2015

Keywords

Bulk amorphous alloys
Composites
Ductile to brittle transition
Mechanical characterization
Micromechanism
Plasticity

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10.1016/j.msea.2014.12.100

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title = "Temperature dependent dynamic flow behavior of an in-situ Ti-based bulk metallic glass composite",

abstract = "The deformation behavior of in-situ Ti48Zr20Nb12Cu5Be15 bulk metallic glass (BMG) composites was investigated within a wide range of temperature from 77K to 573K upon dynamic loading. The present BMG composites exhibit good plasticity (about 11%) above the ambient temperature, but ductile to brittle transition occurs as the temperature lows. Further studies reveal that the deteriorated ability of dendrites to hinder the propagation of shear bands at low temperature is responsible for the present transition. With the decrease of temperature, the yield stress of the present BMG composite increases dramatically and the lower temperature also yields more obvious temperature rising in the fracture surfaces.",

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T1 - Temperature dependent dynamic flow behavior of an in-situ Ti-based bulk metallic glass composite

AU - Bai, J.

AU - Li, J. S.

AU - Wang, J.

AU - Kou, H. C.

AU - Liaw, P. K.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - The deformation behavior of in-situ Ti48Zr20Nb12Cu5Be15 bulk metallic glass (BMG) composites was investigated within a wide range of temperature from 77K to 573K upon dynamic loading. The present BMG composites exhibit good plasticity (about 11%) above the ambient temperature, but ductile to brittle transition occurs as the temperature lows. Further studies reveal that the deteriorated ability of dendrites to hinder the propagation of shear bands at low temperature is responsible for the present transition. With the decrease of temperature, the yield stress of the present BMG composite increases dramatically and the lower temperature also yields more obvious temperature rising in the fracture surfaces.

AB - The deformation behavior of in-situ Ti48Zr20Nb12Cu5Be15 bulk metallic glass (BMG) composites was investigated within a wide range of temperature from 77K to 573K upon dynamic loading. The present BMG composites exhibit good plasticity (about 11%) above the ambient temperature, but ductile to brittle transition occurs as the temperature lows. Further studies reveal that the deteriorated ability of dendrites to hinder the propagation of shear bands at low temperature is responsible for the present transition. With the decrease of temperature, the yield stress of the present BMG composite increases dramatically and the lower temperature also yields more obvious temperature rising in the fracture surfaces.

KW - Bulk amorphous alloys

KW - Composites

KW - Ductile to brittle transition

KW - Mechanical characterization

KW - Micromechanism

KW - Plasticity

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DO - 10.1016/j.msea.2014.12.100

M3 - 文章

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VL - 627

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JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

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Temperature dependent dynamic flow behavior of an in-situ Ti-based bulk metallic glass composite

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Keywords

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