A Yarahmadi - MSc. Student of Metallurgy and Materials Engineering Department, Engineering and Technology faculty, Imam Khomeini International University (IKIU), Qazvin, Iran
M Rajabi - Academic Member at Metallurgy and Materials Engineering Department, Engineering and Technology Faculty, Imam Khomeini International University (IKIU), Qazvin, Iran.
M.T Noghani - Academic Member at Metallurgy and Materials Engineering Department, Engineering and Technology Faculty, Imam Khomeini International University (IKIU), Qazvin, Iran.
R Taghiabadi - Academic Member at Metallurgy and Materials Engineering Department, Engineering and Technology Faculty, Imam Khomeini International University (IKIU), Qazvin, Iran

In this study, carbon nanotubes (CNTs) reinforce aluminum composites which were synthesized by double-pressing double-sintering (DPDS) method. Hardness as well as compressive and bending strength of Al-CNTs increase with the increase of up to 8.0wt% (HV= 82.6) as compared with the pure matrix. The composites were characterized by SEM and XRD. The XRD is used to analyse the composites structure. Appearances and fracture surface morphologies of failed composite samples indicate that the composites become more and more brittle with the increase of the MWCNT content. The maximal increments of bending and compressive strength, and the hardness of the composites, compared to Al matrix, are 20%, 52% and 64%, respectively. This study shows the feasibility of manufacturing CNT reinforced metal composites by DPDS.

Aluminum-CNTs Nano-composites; double-pressing double-sintering method; mechanical properties