Abstract
This study aims to explain the failure mechanism of graphene nanoflakes/titanum (GNFs/Ti) composites with physical and chemical bonded interface. Formation of suitable titanium carbides (TiC) by interfacial chemical reaction is a promising approach for the interface bonding enhancement. We find that nano-TiC layer (consists of multi-sized grains) will simultaneously accumulate abundant dislocations on TiC/Ti interface and store the micro-cracks on GNFs-TiC interface, which greatly improve the strength and failure tolerance compared with physical-bonding interface. Tensile tests show that the interface chemical bonding lead to the excellent combination of high strength (849 MPa) and well ductility (a superior elongation of 20%) in 0.23 vol% GNFs/Ti composites.
Original language | English |
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Article number | 129422 |
Journal | Materials Letters |
Volume | 289 |
DOIs | |
Publication status | Published - 15 Apr 2021 |
Keywords
- Carbon materials
- Graphene
- Mechanical properties
- Metallic composites