Boron nitride nanotubes reinforced aluminum composites prepared by spark plasma sintering: Microstructure, mechanical properties and deformation behavior

被引：70

作者：

Lahiri, Debrupa ^{[1
]}

Hadjikhani, Ali ^{[1
]}

Zhang, Cheng ^{[1
]}

Xing, Tan ^{[2
]}

Li, Lu Hua ^{[2
]}

Chen, Ying ^{[2
]}

Agarwal, Arvind ^{[1
]}

机构：

[1] Florida Int Univ, AMERI, Plasma Forming Lab, Miami, FL 33174 USA

[2] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 574卷

关键词：

Boron nitride nanotube; Spark plasma sintering; Micro-pillar; Deformability; Aluminum; Composite; ELASTIC-MODULUS; FABRICATION; RESISTANCE;

D O I：

10.1016/j.msea.2013.03.022

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Boron nitride nanotubes (BNNT) reinforced aluminum based composites are synthesized by spark plasma sintering (SPS). The concentration of BNNT is varied as 0, 2 and 5 vol% in the aluminum matrix. Micropillar compression testing revealed that Al-5 vol% BNNT has yield strength and compressive strength as 88 MPa and 216 MPa respectively, which is more than 50% improvement over unreinforced Al. BNNT play an active role in strengthening Al matrix through effective load bearing and transfer by crack bridging and sword in sheath mechanisms. Cold rolling of Al-5 vol% BNNT with 75% thickness reduction in a single pass exhibited high deformability without cracking or disintegration. The deformation is dominated by slip signifying ductile behavior in sintered Al with and without BNNT. BNNT survives the extreme temperature and pressure conditions during SPS processing and heavy deformation during cold rolling. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：149 / 156

页数：8

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