Relationship between interphase chemistry and mechanical properties at the scale of micron in Cu-Cr/CF composite

A. Veillre, A. Sundaramurthy, J. M. Heintz, J. Douin, M. Lahaye, N. Chandra, S. Enders, J. F. Silvain

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


The properties of a composite material are determined not only by the constitutive properties of the matrix and the reinforcement, but also by the type and nature of interfacial bonding between them. For thermo-mechanical applications, the influence of interfaces and interphases is fundamental. In this work, we comprehensively study the copper alloy/carbon fiber composite material interfaces, with and without interphases, in terms of microstructural and chemical properties at the micro-and nanometric scales. These properties are then correlated with the local mechanical properties as determined by nanoindentation, enabling us to establish a direct relationship between the chemistry and mechanical properties at the microscale. In addition to experimental measurements, three-dimensional finite element simulations are performed on the matrix/interphase/reinforcement system, and the results between experiments and simulations show very good agreement, validating our basic hypothesis that the local mechanical properties are determined by the material chemistry.

Original languageEnglish (US)
Pages (from-to)1445-1455
Number of pages11
JournalActa Materialia
Issue number4
StatePublished - Feb 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys


  • Finite element analysis
  • Interfaces
  • Metal matrix composite (MMC)
  • Microstructure
  • Nanoindentation


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