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In situ spherical B2 CuZr phase reinforced ZrCuNiAlNb bulk metallic glass matrix composite

Published online by Cambridge University Press:  31 January 2011

Jinmin Liu ,
Haifeng Zhang ,
Huameng Fu ,
Zhuang-Qi Hu  and
Xiaoguang Yuan
Jinmin Liu
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; and School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
Zhuang-Qi Hu
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Xiaoguang Yuan
Affiliation:
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
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Abstract

In situ microlevel spherical B2 CuZr phase reinforced Zr49.5Cu36.45Ni4.05Al9Nb1 bulk metallic glass matrix composite was prepared successfully by the copper mold casting method. It was found that mechanical properties of Zr50.5Cu36.45Ni4.05Al9 alloy were improved largely due to the Nb addition. The room-temperature compressive fracture strength and plastic strain for Zr49.5Cu36.45Ni4.05Al9Nb1 rod with a diameter of 5 mm reaches 2037 MPa and 8%, respectively. The improvements are attributed to the precipitation of the spherical B2 CuZr phase distributed uniformly in amorphous matrix, which effectively hampers the propagation of shear bands by deflecting them at the interface and by a multiplication mechanism.

Keywords

AmorphousZrMicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 6 , June 2010 , pp. 1159 - 1163
Copyright
Copyright © Materials Research Society 2010

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