A CuZr-based bulk metallic glass composite with excellent mechanical properties by optimizing microstructure

被引：60
作者：
Jiang, Song-Shan [1 ,2 ]
Huang, Yong-Jiang [1 ]
Wu, Fu-Fa [2 ]
Xue, Peng [1 ]
Sun, Jian-Fei [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
[2] Liaoning Univ Technol, Sch Mat Sci & Engn, Jinzhou 121001, Peoples R China
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2018年 / 483卷
基金：
中国国家自然科学基金;
关键词：
Bulk metallic glass composites; Doping element; Mechanical properties; Martensitic transformation; MATRIX COMPOSITES; TENSILE DUCTILITY; PLASTICITY; PHASE; ALLOYS; TOUGHNESS; STRENGTH;
D O I：
10.1016/j.jnoncrysol.2018.01.006
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The dependence of microstructure and mechanical properties on alloy composition of a series of Cu48Zr48-xAl4Nbx (x = 0, 0.3, 0.8, 1.2, 1.5, 2.0 at.%) bulk metallic glass composites (BMGCs) was studied in detail. It was found that the doping element Nb exerts a crucial role on the mechanical properties of the studied BMGCs. By adjusting Nb content, a BMGC possessing an excellent combination of high strength (similar to 1.3 GPa) and significant tensile plasticity (similar to 8%) was obtained. Such superior mechanical performance can be attributed to the formation of multiple shear bands and the deformation-induced martensitic transformation from a cubic primitive B2 phase to a monoclinic B19' phase.
引用
收藏
页码：94 / 98
页数：5
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