Size-dependent mechanical properties of molybdenum nanopillars

被引：59

作者：

Kim, Ju-Young ^{[1
]}

Greer, Julia R. ^{[1
]}

机构：

[1] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 10期

关键词：

D O I：

10.1063/1.2979684

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the deformation behavior of single crystalline molybdenum nanopillars in uniaxial compression, which exhibits a strong size effect called the "smaller is stronger" phenomenon. We show that higher strengths arise from the increase in the yield strength rather than through postyield strain hardening. We find the yield strength at nanoscale to depend strongly on sample size and not on the initial dislocation density, a finding strikingly different from that of the bulk metal. (C) 2008 American Institute of Physics.

引用

页数：3

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