Direct observation of carbon nanotube induced strengthening in aluminum composite via in situ tensile tests

被引：49

作者：

Boesl, Benjamin ^{[1
]}

Lahiri, Debrupa ^{[1
,2
]}

Behdad, Sadegh ^{[1
]}

Agarwal, Arvind ^{[1
]}

机构：

[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA

[2] Indian Inst Technol, Dept Met & Mat Engn, Roorkee 247667, Uttar Pradesh, India

来源：

CARBON | 2014年 / 69卷

关键词：

MATRIX COMPOSITE; MECHANISMS; DEFORMATION; FRACTURE;

D O I：

10.1016/j.carbon.2013.11.061

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

In situ tensile tests inside a scanning electron microscope chamber are conducted on spark plasma sintered Al and Al-1 vol.% CNT composites to understand the strengthening and deformation mechanisms due to long (25-30 mu m) CNT reinforcement addition. Al-CNT composite shows 40% higher tensile strength, and 65% higher stiffness for mere 1 vol.% CNT addition. The failure occurs by CNT pullout from the matrix, which is directly imaged during the tensile testing. Telescopic sliding of CNT walls is also observed which aids to strengthening. (C) 2013 Elsevier Ltd. All rights reserved.

引用

收藏

页码：79 / 85

页数：7

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