Solvothermal-assisted graphene encapsulation of SiC nanoparticles: A new horizon toward toughening aluminium matrix nanocomposites

Fadavi Boostani, A; Taherzadeh Mousavian, R; Tahamtan, S; Yazdani, S; Azari Khosroshahi, R; Wei, D; Xu, J; Zhang, X; Jiang, ZY

Solvothermal-assisted graphene encapsulation of SiC nanoparticles: A new horizon toward toughening aluminium matrix nanocomposites

Fadavi Boostani, A Taherzadeh Mousavian, R Tahamtan, S Yazdani, S Azari Khosroshahi, R Wei, D

Xu, J Zhang, X Jiang, ZY

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Publication Type:: Journal Article
Citation:: Materials Science and Engineering A, 2016, 653 pp. 99 - 107
Issue Date:: 2016-01-20

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Field	Value	Language
dc.contributor.author	Fadavi Boostani, A	en_US
dc.contributor.author	Taherzadeh Mousavian, R	en_US
dc.contributor.author	Tahamtan, S	en_US
dc.contributor.author	Yazdani, S	en_US
dc.contributor.author	Azari Khosroshahi, R	en_US
dc.contributor.author	Wei, D https://orcid.org/0000-0002-4247-8905	en_US
dc.contributor.author	Xu, J	en_US
dc.contributor.author	Zhang, X	en_US
dc.contributor.author	Jiang, ZY	en_US
dc.date.issued	2016-01-20	en_US
dc.identifier.citation	Materials Science and Engineering A, 2016, 653 pp. 99 - 107	en_US
dc.identifier.issn	0921-5093	en_US
dc.identifier.uri	http://hdl.handle.net/10453/41498
dc.description.abstract	© 2015 Published by Elsevier B.V. Agglomeration of ceramic nanoparticles is a key challenge during manufacturing aluminium matrix composites in both solid and liquid methods. This study presents an innovative fabrication route to diminish the agglomeration of SiC nanoparticles using graphene encapsulating method stimulated by a solvothermal process. The produced SiC nanoparticles were then incorporated into A357 molten alloy using a liquid processing route. HRTEM investigations have shown the uniform distribution of SiC nanoparticles wrapped by onion-liked graphene shells within the matrix of composite, conferring 273% and 400% enhancement in yield strength and tensile ductility, respectively, compared to the unreinforced one. This is attributed to the manipulation of solidification mechanism of SiC nanoparticles from pushing to engulfment, ensued from imparting higher thermal conductivity to these particles by onion-liked graphene sheets. Fractographic observations have revealed the transgranular facture mode activated due to nano-void coalescence fracture mechanism in composites reinforced with graphene sheets associated with prolonged ductility. A devised analytical strengthening model has also demonstrated the profound efficacy of thermal activated dislocation mechanism in fortifying the matrix, brought about by the exceptional negative thermal expansion coefficient of graphene sheets.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP150102732
dc.relation.ispartof	Materials Science and Engineering A	en_US
dc.relation.isbasedon	10.1016/j.msea.2015.12.008	en_US
dc.subject.classification	Materials	en_US
dc.title	Solvothermal-assisted graphene encapsulation of SiC nanoparticles: A new horizon toward toughening aluminium matrix nanocomposites	en_US
dc.type	Journal Article
utslib.citation.volume	653	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	0910 Manufacturing Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	653	en_US

Abstract:

© 2015 Published by Elsevier B.V. Agglomeration of ceramic nanoparticles is a key challenge during manufacturing aluminium matrix composites in both solid and liquid methods. This study presents an innovative fabrication route to diminish the agglomeration of SiC nanoparticles using graphene encapsulating method stimulated by a solvothermal process. The produced SiC nanoparticles were then incorporated into A357 molten alloy using a liquid processing route. HRTEM investigations have shown the uniform distribution of SiC nanoparticles wrapped by onion-liked graphene shells within the matrix of composite, conferring 273% and 400% enhancement in yield strength and tensile ductility, respectively, compared to the unreinforced one. This is attributed to the manipulation of solidification mechanism of SiC nanoparticles from pushing to engulfment, ensued from imparting higher thermal conductivity to these particles by onion-liked graphene sheets. Fractographic observations have revealed the transgranular facture mode activated due to nano-void coalescence fracture mechanism in composites reinforced with graphene sheets associated with prolonged ductility. A devised analytical strengthening model has also demonstrated the profound efficacy of thermal activated dislocation mechanism in fortifying the matrix, brought about by the exceptional negative thermal expansion coefficient of graphene sheets.

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http://hdl.handle.net/10453/41498