Interface-dependent failure behaviors in graphene nanoflakes reinforced Ti matrix composites

X. N. Mu*, P. W. Chen, H. M. Zhang, X. W. Cheng, L. Liu, Y. X. Ge

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

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 languageEnglish
Article number129422
JournalMaterials Letters
Volume289
DOIs
Publication statusPublished - 15 Apr 2021

Keywords

  • Carbon materials
  • Graphene
  • Mechanical properties
  • Metallic composites

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Mu, X. N., Chen, P. W., Zhang, H. M., Cheng, X. W., Liu, L., & Ge, Y. X. (2021). Interface-dependent failure behaviors in graphene nanoflakes reinforced Ti matrix composites. Materials Letters, 289, Article 129422. https://doi.org/10.1016/j.matlet.2021.129422