High tensile plasticity and strength of a CuZr-based bulk metallic glass composite

Ning, Zhiliang, Liang, Weizhong, Zhang, Mingxing, Li, Zongze, Sun, Haichao, Liu, Ailian and Sun, Jianfei (2016) High tensile plasticity and strength of a CuZr-based bulk metallic glass composite. Materials and Design, 90 145-150. doi:10.1016/j.matdes.2015.10.117

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Author Ning, Zhiliang
Liang, Weizhong
Zhang, Mingxing
Li, Zongze
Sun, Haichao
Liu, Ailian
Sun, Jianfei
Title High tensile plasticity and strength of a CuZr-based bulk metallic glass composite
Journal name Materials and Design   Check publisher's open access policy
ISSN 1873-4197
0264-1275
Publication date 2016-01-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.matdes.2015.10.117
Open Access Status File (Author Post-print)
Volume 90
Start page 145
End page 150
Total pages 6
Place of publication London, United Kingdom
Publisher Elsevier Ltd
Language eng
Subject 2500 Materials Science
2211 Mechanics of Materials
2210 Mechanical Engineering
Abstract A new approach to improve the tensile ductility of CuZr-based bulk metallic glasses without significant reduction in high strength is reported. After doping of Nb into CuZr-based alloy, a composite was formed with a combination of high strength, large tensile plasticity and strong work-hardening effect. The addition of Nb led to a uniform distribution of single B2-CuZr phase in the glassy matrix. The optimal tensile properties were attributed to the deformation-induced martensitic transformation of the B2-CuZr phase, which in turn interacted with the glassy matrix. In addition, the drastic adiabatic heating on the fracture region also contributed to the increase in tensile plasticity.
Formatted abstract
A new approach to improve the tensile ductility of CuZr-based bulk metallic glasses without significant reduction in high strength is reported. After doping of Nb into CuZr-based alloy, a composite was formed with a combination of high strength, large tensile plasticity and strong work-hardening effect. The addition of Nb led to a uniform distribution of single B2-CuZr phase in the glassy matrix. The optimal tensile properties were attributed to the deformation-induced martensitic transformation of the B2-CuZr phase, which in turn interacted with the glassy matrix. In addition, the drastic adiabatic heating on the fracture region also contributed to the increase in tensile plasticity.
Keyword Bulk metallic glass
Composite
Martensitic transformation mediated plasticity
Tensile properties
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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