Abstract
The reinforcing effects of carbon nanotubes (CNTs) are investigated for aluminum matrix composites. The composites present a strong bonding between CNTs and the aluminum matrix using a controlled mechanical milling process, producing a network structure of aluminum atoms around CNTs. At the same time, CNTs that are dispersed during the milling process can be located inside aluminum powders, thereby providing an easy consolidation route via thermomechanical processes. A composite containing 4.5 vol% multiwalled CNTs exhibits a yield strength of 620 MPa and fracture toughness of 61 MPa·mm1/2, the values of which are nearly 15 and seven times higher than those of the corresponding starting aluminum, respectively.
Similar content being viewed by others
References
T. Noguchi, A. Magario, S. Fukazawa, J. Beppu, and M. Seki: Carbon nanotube/aluminium composites with uniform dispersion. Mater. Trans. 45, 602 (2004).
H. Yanagi, Y. Kawai, T. Kita, S. Fujii, Y. Hayashi, A. Magario, and T. Noguchi: Carbon nanotube/aluminum composites as a novel field electron emitter. Jpn. J. Appl. Phys. 45, L650 (2006).
R. Zhong, H. Cong, and P. Hou: Fabrication of nano-Al based composites reinforced by single-walled carbon nanotubes. Carbon 41, 848 (2003).
E. Flahaut, A. Peigney, Ch. Laurent, Ch. Marlière, F. Chastel, and A. Rousset: Carbon nanotube–metal–oxide nanocomposites: Microstructure, electrical conductivity and mechanical properties. Acta Mater. 48, 3803 (2000).
R. George, K.T. Kashyap, R. Rahul, and S. Yamdagni: Strengthening in carbon nanotube/aluminium (CNT/Al) composites. Scr. Mater. 53, 1159 (2005).
M.K.E. Amal and A.E.B. Mostafa: Carbon nanotube-reinforced aluminium strips. Compos. Sci. Technol. 68, 486 (2007).
S.I. Cha, K.T. Kim, S.N. Arshad, C.B. Mo, and S.H. Hong: Extraordinary strengthening effect of carbon nanotubes in metalmatrix nanocomposites processed by molecular-level mixing. Adv. Mater. 17, 1377 (2005).
X. Hu, T. Wang, X. Qu, and S. Dong: In situ synthesis and characterization of multiwalled carbon nanotube/Au nanoparticle composite materials. J. Phys. Chem. B 110, 853 (2006).
T. Laha, Y. Chen, D. Lahiri, and A. Agarwal: Tensile properties of carbon nanotube reinforced aluminum nanocomposite fabricated by plasma spray forming. Composites Part A 40(5), 589 (2009).
T. Tokunaga, K. Kaneko, and Z. Horita: Production of aluminummatrix carbon nanotube composite using high pressure torsion. Mater. Sci. Eng. A. 490, 300 (2008).
R. Pérez-Bustamante, C.D. Gómez-Esparza, I. Estrada-Guel, M. Miki-Yoshida, L. Licea-Jiménez, S.A. Pérez-García, and R. Martínez-Sánchez: Microstructural and mechanical characterization of Al–MWCNT composites produced by mechanical milling. Mater. Sci. Eng. A. 502, 159 (2009).
Y. Zhou, W. Yang, Y. Xia, and P.K. Mallick: An experimental study on the tensile behavior of a unidirectional carbon fiber reinforced aluminum composite at different strain rates. Mater. Sci. Eng. A. 361, 112 (2003).
S. Berber and A. Oshiyama: Reconstruction of mono-vacancies in carbon nanotube: Atomic relaxation vs. spin polarization. Physica B 376–377, 272 (2006).
A. Hashimoto, K. Suenaga, A. Gloter, K. Urita, and S. Iljima: Direct evidence for atomic defects in grapheme layers. Nature 430, 870 (2004).
S. Wang, R. Liang, B. Wang, and C. Zhang: Load-transfer in functionalized carbon nanotubes/polymer composites. Chem. Phys. Lett. 457, 371 (2008).
T.H. Courtney: Mechanical Behavior of Materials (McGraw-Hill, New York, 2000).
R.W. Armstrong: The Yield, Flow and Fracture of Polycrystals (Barking, UK, 1983).
K.T. Faber and A.G. Evans: Crack deflection processes. Acta Metall. 31, 565 (1983).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Choi, H., Shin, J., Min, B. et al. Reinforcing effects of carbon nanotubes in structural aluminum matrix nanocomposites. Journal of Materials Research 24, 2610–2616 (2009). https://doi.org/10.1557/jmr.2009.0318
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/jmr.2009.0318