Open Access System for Information Sharing

Login Library

 

ARTICLE
Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Consolidation of carbon nanotube reinforced aluminum matrix composites by high-pressure torsion

Title
Consolidation of carbon nanotube reinforced aluminum matrix composites by high-pressure torsion
Authors
Asgharzadeh H., Joo S.-H., Kim H.S.김형섭
Date Issued
Aug-2014
Publisher
Springer
Abstract
Al-3 vol pct carbon nanotube (CNT) composites are fabricated by consolidation through high-pressure torsion (HPT) at room temperature. The densification behavior, microstructural evolution, and mechanical properties of Al/CNT composites are studied. The results show that density and microstructural homogeneity increase with increasing number of revolutions under a high pressure of 6 GPa. Substantial grain refinement is achieved after 10 turns of HPT with an average grain thickness of similar to 38 nm perpendicular to the compression axis of HPT. The Al/CNT composite shows a considerable increase in hardness and strength compared to the Al matrix. The strengthening mechanisms of the Al/CNT composite are found to be (i) grain refinement of Al matrix and (ii) Orowan looping. Raman spectroscopy and high-resolution transmission electron microscopy reveal that the structure of most of CNTs is changed during processing through mechanical milling and HPT.
Keywords
SEVERE PLASTIC-DEFORMATION; MECHANICAL-PROPERTIES; WALLED CARBON; NANOTUBE/ALUMINUM COMPOSITES; STRENGTHENING MECHANISMS; POWDER-METALLURGY; BEHAVIOR; ALLOY; EVOLUTION; MICROSTRUCTURE
URI
http://oasis.postech.ac.kr/handle/2014.oak/14440
DOI
10.1007/S11661-014-2354-6
ISSN
1073-5623
Article Type
ARTICLE
Files in This Item:
There are no files associated with this item.

qr_code

  • mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Views & Downloads

Browse