Home > Papers

 
 
The effect of hybrid graphenes-carbon nanotubes reinforcements on mechanical properties of AZ31 nano-composites
Zhou Mingyang 1,Qu Xiaoni 2,Ren Lingbao 2,Fan Lingling 2,Guo Yangyang 2,Quan Gaofeng 2 * #,Sun Hao 2,Liu Bin 2,Tang Qi 2
1.school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031;school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031;school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031;school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031;school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031;school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031;school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031;school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031;school of materials science and engineering,southwest jiaotong university,chengdu,sichuan610031
2.
*Correspondence author
#Submitted by
Subject: Composite Materials
Funding: none
Opened online:25 August 2017
Accepted by: none
Citation: Zhou Mingyang,Qu Xiaoni,Ren Lingbao.The effect of hybrid graphenes-carbon nanotubes reinforcements on mechanical properties of AZ31 nano-composites[OL]. [25 August 2017] http://www.paper.edu.cn/lwzx/en_releasepaper/content/4740458
 
 
Carbon nanotubes (CNTs) and graphene nanoplatelets are ideal reinforcements of Mg matrix composites because of their excellent mechanical and physical properties. However, they are prone to agglomerate due to the strong Van der Waals forces, leading to the limitation of their applications in metal matrix composites (MMCs). In this work, CNTs and/or GNPs reinforced AZ31 matrix composites were successfully fabricated by powder metallurgy method followed by hot extrusion. The nano-reinforcements on the microstructure and mechanical properties of the matrix were investigated by optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM), microhardness and tensile test. The XRD results revealed that the addition of the carbonaceous nano-reinforcements would weaken basal texture of the AZ31. And it was found that adding the hybrid CNTs and GNPs could inhibit the agglomeration of the nano-reinforcements, which might be caused by the formation of 3D hybrid network structure due to CNTs intercalating into GNPs layers. A striking synergistic effect was achieved by using this hybrid nano-reinforcements and compared to the matrix, the microhardness, yield strength, ultimate tensile strength, ductility and work of fracture of the composites were significantly enhanced up to +9.4%, +22.3%, +12.5%, +28.5%, +41.7%, respectively. The load transfer mechanism, Orowan mechanism, and thermal mismatch hardening played the important roles in the improvement of the mechanical properties. Our investigation may provide a novel method to fabricate composites stronger and tougher by using hybrid nano-reinforcements.
Keywords:Hybrid CNTs-GNPs; Synergistic effects; Basal texture weaken; Strengthening mechanisms; Toughening
 
 
 

For this paper

  • PDF (856KB)
  • ● Revision 0   
  • ● Print this paper
  • ● Recommend this paper to a friend
  • ● Add to my favorite list

    Saved Papers

    Please enter a name for this paper to be shown in your personalized Saved Papers list

Tags

Add yours

Related Papers

Statistics

PDF Downloaded 78
Bookmarked 0
Recommend 0
Comments 0
Submit your papers