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Enhanced tensile properties of aluminium matrix composites reinforced with graphene encapsulated SiC nanoparticles

Journal Article


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Abstract


  • Due to a high propensity of nano-particles to agglomerate, making aluminium matrix composites with a uniform dispersion of the nano-particles using liquid routes is an exceptionally difficult task. In this study, an innovative approach was utilised to prevent agglomeration of nano-particle by encapsulating SiC nano-particles using graphene sheets during ball milling. Subsequently, the milled mixture was incorporated into A356 molten alloy using non-contact ultrasonic vibration method. Two different shapes for graphene sheets were characterised using HRTEM, including onion-like shells encapsulating SiC particles and disk-shaped graphene nanosheets. This resulted in 45% and 84% improvement in yield strength and tensile ductility, respectively. The former was ascribed to the Orowan strengthening mechanism, while the latter is due primarily to the fiber pull-out mechanism, brought about by the alteration of the solidification mechanism from particle pushing to particle engulfment during solidification as a consequence of high thermal conductive graphene sheets encapsulating SiC particles.

UOW Authors


  •   Fadavi Boostani, Alireza (external author)
  •   Tahamtan, S (external author)
  •   Jiang, Zhengyi (external author)
  •   Wei, Dongbin
  •   Yazdani, Siamak (external author)
  •   Azari Khosroshahi, R (external author)
  •   Mousavian, R Taherzadeh. (external author)
  •   Xu, Jianzhong (external author)
  •   Zhang, X M. (external author)
  •   Gong, Dianyao (external author)

Publication Date


  • 2015

Citation


  • Fadavi Boostani, A., Tahamtan, S., Jiang, Z. Y., Wei, D., Yazdani, S., Azari Khosroshahi, R., Mousavian, R. Taherzadeh ., Xu, J., Zhang, X. M. & Gong, D. (2015). Enhanced tensile properties of aluminium matrix composites reinforced with graphene encapsulated SiC nanoparticles. Composites Part A: Applied Science and Manufacturing, 68 155-163.

Scopus Eid


  • 2-s2.0-84908339326

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4321&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3305

Number Of Pages


  • 8

Start Page


  • 155

End Page


  • 163

Volume


  • 68

Abstract


  • Due to a high propensity of nano-particles to agglomerate, making aluminium matrix composites with a uniform dispersion of the nano-particles using liquid routes is an exceptionally difficult task. In this study, an innovative approach was utilised to prevent agglomeration of nano-particle by encapsulating SiC nano-particles using graphene sheets during ball milling. Subsequently, the milled mixture was incorporated into A356 molten alloy using non-contact ultrasonic vibration method. Two different shapes for graphene sheets were characterised using HRTEM, including onion-like shells encapsulating SiC particles and disk-shaped graphene nanosheets. This resulted in 45% and 84% improvement in yield strength and tensile ductility, respectively. The former was ascribed to the Orowan strengthening mechanism, while the latter is due primarily to the fiber pull-out mechanism, brought about by the alteration of the solidification mechanism from particle pushing to particle engulfment during solidification as a consequence of high thermal conductive graphene sheets encapsulating SiC particles.

UOW Authors


  •   Fadavi Boostani, Alireza (external author)
  •   Tahamtan, S (external author)
  •   Jiang, Zhengyi (external author)
  •   Wei, Dongbin
  •   Yazdani, Siamak (external author)
  •   Azari Khosroshahi, R (external author)
  •   Mousavian, R Taherzadeh. (external author)
  •   Xu, Jianzhong (external author)
  •   Zhang, X M. (external author)
  •   Gong, Dianyao (external author)

Publication Date


  • 2015

Citation


  • Fadavi Boostani, A., Tahamtan, S., Jiang, Z. Y., Wei, D., Yazdani, S., Azari Khosroshahi, R., Mousavian, R. Taherzadeh ., Xu, J., Zhang, X. M. & Gong, D. (2015). Enhanced tensile properties of aluminium matrix composites reinforced with graphene encapsulated SiC nanoparticles. Composites Part A: Applied Science and Manufacturing, 68 155-163.

Scopus Eid


  • 2-s2.0-84908339326

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4321&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3305

Number Of Pages


  • 8

Start Page


  • 155

End Page


  • 163

Volume


  • 68