Effect of minor Nb addition on mechanical properties of in-situ Cu-based bulk metallic glass composite

Hai min ZHAI; Hai feng WANG; Feng LIU

doi:10.1016/S1003-6326(17)60040-2

Effect of minor Nb addition on mechanical properties of in-situ Cu-based bulk metallic glass composite

Hai min ZHAI, Hai feng WANG, Feng LIU

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

10 Scopus citations

Abstract

In-situ formed (Cu_0.6Zr_0.3Ti_0.1)₉₅Nb₅ bulk metallic glass (BMG) composite with Nb-rich dendrite randomly dispersed in hard glassy matrix was prepared by casting into a water-cooled copper mold. The dendrite has much smaller hardness and elastic modulus than glassy matrix, and the stress concentration at interface provides a channel for the initiating and branching of shear bands upon loading, thus leading to a high compressive fracture strain of 6.08% and fracture strength about 2200 MPa. Comparing with other Cu-based BMG composite, the fracture strength of present (Cu_0.6Zr_0.3Ti_0.1)₉₅Nb₅ composite is not significantly reduced, indicating that the addition of Nb in the current work is an effective and effortless way to fabricate new practical BMG composites with enhanced strength and good plasticity.

Original language	English
Pages (from-to)	363-368
Number of pages	6
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	27
Issue number	2
DOIs	https://doi.org/10.1016/S1003-6326(17)60040-2
State	Published - 1 Feb 2017

Keywords

bulk metallic glass composite
mechanical property
microstructure
Nb addition
shear band

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10.1016/S1003-6326(17)60040-2

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title = "Effect of minor Nb addition on mechanical properties of in-situ Cu-based bulk metallic glass composite",

abstract = "In-situ formed (Cu0.6Zr0.3Ti0.1)95Nb5 bulk metallic glass (BMG) composite with Nb-rich dendrite randomly dispersed in hard glassy matrix was prepared by casting into a water-cooled copper mold. The dendrite has much smaller hardness and elastic modulus than glassy matrix, and the stress concentration at interface provides a channel for the initiating and branching of shear bands upon loading, thus leading to a high compressive fracture strain of 6.08% and fracture strength about 2200 MPa. Comparing with other Cu-based BMG composite, the fracture strength of present (Cu0.6Zr0.3Ti0.1)95Nb5 composite is not significantly reduced, indicating that the addition of Nb in the current work is an effective and effortless way to fabricate new practical BMG composites with enhanced strength and good plasticity.",

keywords = "bulk metallic glass composite, mechanical property, microstructure, Nb addition, shear band",

author = "ZHAI, {Hai min} and WANG, {Hai feng} and Feng LIU",

note = "Publisher Copyright: {\textcopyright} 2017 The Nonferrous Metals Society of China",

year = "2017",

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doi = "10.1016/S1003-6326(17)60040-2",

language = "英语",

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T1 - Effect of minor Nb addition on mechanical properties of in-situ Cu-based bulk metallic glass composite

AU - ZHAI, Hai min

AU - WANG, Hai feng

AU - LIU, Feng

PY - 2017/2/1

Y1 - 2017/2/1

N2 - In-situ formed (Cu0.6Zr0.3Ti0.1)95Nb5 bulk metallic glass (BMG) composite with Nb-rich dendrite randomly dispersed in hard glassy matrix was prepared by casting into a water-cooled copper mold. The dendrite has much smaller hardness and elastic modulus than glassy matrix, and the stress concentration at interface provides a channel for the initiating and branching of shear bands upon loading, thus leading to a high compressive fracture strain of 6.08% and fracture strength about 2200 MPa. Comparing with other Cu-based BMG composite, the fracture strength of present (Cu0.6Zr0.3Ti0.1)95Nb5 composite is not significantly reduced, indicating that the addition of Nb in the current work is an effective and effortless way to fabricate new practical BMG composites with enhanced strength and good plasticity.

AB - In-situ formed (Cu0.6Zr0.3Ti0.1)95Nb5 bulk metallic glass (BMG) composite with Nb-rich dendrite randomly dispersed in hard glassy matrix was prepared by casting into a water-cooled copper mold. The dendrite has much smaller hardness and elastic modulus than glassy matrix, and the stress concentration at interface provides a channel for the initiating and branching of shear bands upon loading, thus leading to a high compressive fracture strain of 6.08% and fracture strength about 2200 MPa. Comparing with other Cu-based BMG composite, the fracture strength of present (Cu0.6Zr0.3Ti0.1)95Nb5 composite is not significantly reduced, indicating that the addition of Nb in the current work is an effective and effortless way to fabricate new practical BMG composites with enhanced strength and good plasticity.

KW - bulk metallic glass composite

KW - mechanical property

KW - microstructure

KW - Nb addition

KW - shear band

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U2 - 10.1016/S1003-6326(17)60040-2

DO - 10.1016/S1003-6326(17)60040-2

M3 - 文章

AN - SCOPUS:85014925124

SN - 1003-6326

VL - 27

SP - 363

EP - 368

JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

IS - 2

ER -

Effect of minor Nb addition on mechanical properties of in-situ Cu-based bulk metallic glass composite

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Keywords

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