Strain rate dependence of plastic flow in Ce-based bulk metallic glass during nanoindentation

被引：35

作者：

Wei, B. C. ^{[1
]}

Zhang, L. C.

Zhang, T. H.

Xing, D. M.

Das, J.

Eckert, J.

机构：

[1] Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China

[3] Tech Univ Darmstadt, FG Phys Met, FB Mat & Geowissensch 11, D-64287 Darmstadt, Germany

[4] Leibniz Inst Feskorper Werkstofforsch Dresden, D-01069 Dresden, Germany

来源：

JOURNAL OF MATERIALS RESEARCH | 2007年 / 22卷 / 02期

关键词：

D O I：

10.1557/JMR.2007.0039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The strain rate dependence of plastic deformation of Ce60Al15CU10Ni15 bulk metallic glass was studied by nanoindentation. Even though the ratio of room temperature to the glass transition temperature was very high (0.72) for this alloy, the plastic deformation was dominated by shear banding under nanoindentation. The alloy exhibited a critical loading rate dependent serrated flow feature. That is, with increasing loading rate, the alloy exhibited a transition from less prominent serrated flow to pronounced serrated flow during continuous loading but from serrated to smoother flow during stepped loading.

引用

页码：258 / 263

页数：6

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