Microstructural and mechanical behavior of Zr-based metallic glasses with the addition of Nb

被引：9

作者：

Luo, X. M. ^{[2
]}

Zhou, Y. ^{[3
]}

Lu, J. Q. ^{[3
]}

Yu, G. S. ^{[1
]}

Lin, J. G. ^{[1
]}

Li, W. ^{[4
]}

机构：

[1] Xiangtan Univ, Fac Mat & Photoelect Phys, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Xiangtan 411105, Peoples R China

[2] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[3] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

[4] Huangshi Inst Technol, Sch Chem & Mat Engn, Huangshi 435003, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2009年 / 44卷 / 16期

基金：

中国国家自然科学基金;

关键词：

MATRIX COMPOSITES; FRACTURE MECHANISMS; ENHANCED PLASTICITY;

D O I：

10.1007/s10853-009-3661-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Nb content on the microstructure and mechanical properties of Zr-based bulk metallic glass (BMG) were investigated. The addition of Nb led to the formation of the Zr-based metallic glass composites with a ductile dentritic phase by in situ precipitation. The presence of the in situ precipitated phase enhanced significantly the plasticity of the composite under uniaxial compressive test. The interactions between the precipitated phase and the shear band affect the deformation mechanism and fracture mode of the BMG by enhancing the affecting level of the normal stress on the shear surface, and the constant alpha in the Mohr-Coulomb criterion can reflect the extent of the interactions among particles and the amorphous matrix.

引用

页码：4389 / 4393

页数：5

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