期刊
MATERIALS LETTERS
卷 117, 期 -, 页码 228-230出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.12.025
关键词
Amorphous materials; Composite materials; Deformation and fracture; Titanium alloy; Cryogenic temperature
资金
- Fundamental Research Fund of Northwestern Polytechnical University [JC20120203]
- Specialized Research Fund for the Doctoral Program of Higher Education [20136102120007]
- Program of Introducing Talents of Discipline to Universities [808040]
Quasi-static and dynamic deformation behavior of a Ti48Zr20Nb12Cu5Be15, bulk-metallic-glass composite (BMGC) were investigated at cryogenic temperature (77 K). Results demonstrate that the composite shows good plasticity at quasi-static deformation, but brittle fracture occurs during dynamic deformation. Compared with quasi-static deformation which is insensitive to strain rate, dynamic deformation of the composites exhibits negative strain-rate response that the fracture strength decreases with increasing strain rate. The matrix is believed to dominate the strain-rate response of the present BMGC at cryogenic deformation. Thermal softening due to significant temperature rising in shear band is believed to be responsible for negative strain-rate response during dynamic deformation at cryogenic temperature. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据