Synergetic enhancement of strength and ductility for titanium-based composites reinforced with nickel metallized multi-walled carbon nanotubes

Poor ductility of titanium matrix composites with medium/high-strength reinforced with carbonaceous nanomaterials (eg., graphene, carbon nanotubes etc.), has seriously restricted their wide-range engineering and practical industry utility. Herein, we propose a new methodology to significantly and si...

Full description

Saved in:
Bibliographic Details
Published in:Carbon (New York) 2021-10, Vol.184, p.583-595
Main Authors: Dong, L.L., Zhang, W., Fu, Y.Q., Lu, J.W., Liu, Y., Zhang, Y.S.
Format: Article
Language:English
Subjects:
Ball milling
Carbon
Composite materials
Ductility
Graphene
High strength
Load transfer
Metal matrix composites
Metallizing
Multi wall carbon nanotubes
Nanomaterials
Nanotubes
Ni metallized carbon nanotubes
Nickel
Sintering (powder metallurgy)
Spark plasma sintering
Strength
Studies
Tensile strength
Ti composites
Titanium carbide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Poor ductility of titanium matrix composites with medium/high-strength reinforced with carbonaceous nanomaterials (eg., graphene, carbon nanotubes etc.), has seriously restricted their wide-range engineering and practical industry utility. Herein, we propose a new methodology to significantly and simultaneously enhance both ductility and tensile strength of the titanium matrix composites. We ball milled Ti–6Al–4V (TC4) powders with in-situ chemically synthetized Ni decorated multi-walled carbon nanotubes (i.e MWCNTs@Ni), and then sintered the composites powders using spark plasma sintering (SPS). We achieved both a significant balanced between superior strength and increased ductility of the composite using the MWCNTs@Ni nanopowders. The enhanced strength in composites is mainly attributed to the interfacial structures for effectively enhanced load transfer capability between MWCNTs@Ni and Ti matrix, e.g., the formation of coherent/semi-coherent interfaces among interfacial phases Ti2Ni, TiC and Ti matrix. Furthermore, we applied the dislocation theory to reveal the toughening mechanisms of MWCNTs@Ni in the MWCNTs@Ni/TC4 composites. This study provides a new methodology of fabricating metal matrix composites (reinforced with carbon based nanomaterial) with both high strength and good ductility. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2021.08.030