Brittle and ductile behavior in carbon nanotubes

被引：424

作者：

Nardelli, MB ^{[1
]}

Yakobson, BI ^{[1
]}

Bernholc, J ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.81.4656

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Large-scale molecular dynamics simulations were used to study the response of carbon nanotubes to a tensile load. Plastic or brittle behaviors can occur depending upon the external conditions and tube symmetry. All tubes rule: brittle at high strain and low temperature, while at low strain and high temperature: armchair (tl,rr) nanotubes can be completely or partially ductile. In zigzag (n,0) tubes ductile behavior is expected for tubes with n < 14, while larger tubes are completely brittle. In both cases the curvature determines the mechanical response. [S0031-9007(98)07696-0].

引用

页码：4656 / 4659

页数：4

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