Effect of Strain Rate on Plastic Flow in Zr-Based Metallic-Glass-Reinforced Porous Tungsten Matrix Composites

被引：0
|
作者：
Y. F. Xue
L. Wang
H. N. Cai
F. C. Wang
H. W. Cheng
H. F. Zhang
A. M. Wang
机构：
[1] Beijing Institute of Technology,School of Materials Science and Engineering
[2] Chinese Academy of Sciences,Shenyang National Laboratory for Materials Science, Institute of Metal Research
来源：
Metallurgical and Materials Transactions A | 2011年 / 42卷
关键词：
Flow Stress; Shear Band; Metallic Glass; Strain Rate Sensitivity; Dynamic Compression;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The rate-dependent deformation of Zr38Ti17Cu10.5Co12Be22.5 bulk metallic-glass-reinforced porous tungsten matrix composites was investigated over a wide range of strain rates. The composites were examined in two forms: the as-cast composite and the as-extruded composite by extrusion. In addition to showing greater strain hardening, the as-cast composite also shows much more obvious strain rate dependence of flow stress than the as-extruded composite. Microhardness tests were performed on the tungsten and the metallic glass phase in both composites, respectively. The results from the microhardness measurements indicate that the strain rate sensitivity of the as-extruded composite is primarily a result of strain rate sensitivity of the tungsten phase.
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页码：3521 / 3526
页数：5
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