Strengthening mechanisms of graphene sheets in aluminium matrix nanocomposites

Authors

Alireza Fadavi Boostani, University of WollongongFollow
Siamak Yazdani, Sahand University of Technology
R Taherzadeh Mousavian, Sahand University of Technology, Islamic Azad University
S Tahamtan, Northeastern University, Liaoning, University of Tehran
R Azari Khosroshahi, Sahand University of Technology
Dongbin Wei, University of WollongongFollow
D Brabazon, Dublin City University
Jianzhong Xu, Northeastern UniversityFollow
Xiaoming Zhang, Northeastern UniversityFollow
Zhengyi Jiang, University of WollongongFollow

RIS ID

103556

Publication Details

Fadavi Boostani, A., Yazdani, S., Mousavian, R. Taherzadeh., Tahamtan, S., Azari Khosroshahi, R., Wei, D., Brabazon, D., Xu, J. Z., Zhang, X. M. & Jiang, Z. Y. (2015). Strengthening mechanisms of graphene sheets in aluminium matrix nanocomposites. Materials and Design, 88 983-989.

Abstract

Uniform dispersion of SiC nanoparticles with a high propensity to agglomerate within a thixoformed aluminium matrix was attained using a graphene encapsulating approach. The analytical model devised in this study has demonstrated the significant role of shear lag and thermally activated dislocation mechanisms in strengthening aluminium metal matrix composites due to the exceptional negative thermal expansion coefficient of graphene sheets. This, in turn, triggers the pinning capacity of nano-sized rod-liked aluminium carbide, prompting strong interface bonding for SiC nanoparticles with the matrix, thereby enhancing tensile elongation.