Microstructure evolution and mechanical properties of Nb-alloyed Cu-Zr-Al-Ni large-sized metallic glass composites

被引：5

作者：

Shao, Ziyu ^{[1
]}

Zhang, Aisheng ^{[1
]}

Wang, Feng ^{[1
]}

机构：

[1] Nanchang Univ, Sch Mat Sci & Engn, Nanchang 330031, Jiangxi, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2019年 / 35卷 / 16期

基金：

芬兰科学院;

关键词：

Bulk metallic glass; composites; precipitation; microstructures; compressive properties; COMPRESSIVE PROPERTIES; FORMING ABILITY; PLASTICITY; IMPROVEMENT; STRENGTH;

D O I：

10.1080/02670836.2019.1658439

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of Nb on the microstructures and mechanical properties of large-sized (Cu0.47Zr0.47Al0.06)(99 - x)Ni1Nbx (x = 0, 0.5, 1, 2 at.-%) bulk metallic glass composites were investigated. It is verified that the liquidus temperature (T-l) of the Nb-added alloys decreases to cause the increase of glass-forming ability (GFA). The addition of Nb adjusts the distribution and the volume fraction of B2-CuZr phase in the Cu-Zr-Al-Ni large-sized composites by changing the GFA of the alloys. The mechanical properties of the composites strongly depend on the volume fraction and distribution of B2-CuZr phase in the glassy matrix. The alloy with 0.5 at.-% Nb addition exhibits the high mechanical properties, which should be attributed to the uniform distribution and the proper volume fraction of B2-CuZr phase in the glassy matrix.

引用

页码：1956 / 1962

页数：7

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