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Journal of Materials Science

, Volume 29, Issue 16, pp 4342–4350 | Cite as

Characteristics of several carbon fibrereinforced aluminium composites prepared by a hybridization method

  • H. M. Cheng
  • A. Kitahara
  • S. Akiyama
  • K. Kobayashi
  • Y. Uchiyama
  • B. L. Zhou
Papers

Abstract

The properties and microstructures of several high-strength and high-modulus carbon fibrereinforced aluminium or aluminium alloy matrix composites (abbreviated as HSCF/Al and HMCF/Al, respectively, for the two types of fibre) have been characterized. The composites evaluated were fabricated by pressure casting based on a hybridization method. It was found that the strength degradation of high-modulus carbon fibres after infiltration of aluminium matrices was not marked and depended upon the type of aluminium matrix. However, the strength of high-strength carbon fibres was greatly degraded by aluminium infiltration and the degradation seemed to be independent of the type of aluminium matrix. The longitudinal tensile strength (LTS) of CF/Al composites was very different between HMCF/Al and HSCF/Al composites. The HMCF/Al composites had LTS values above 800 MPa, but the HSCF/Al composites had only about 400 MPa. In contrast, the transverse tensile strength of the HSCF/Al composites, above 60 MPa, was much higher than that of the HMCF/Al composites, about 16 MPa. Chemical reactions were evident to the interface of high-strength carbon fibres and aluminium matrices. There was no evidence of chemical products arising between high-modulus carbon fibres and Al-Si alloy and 6061 alloy matrices. However, it was considered that some interfacial reactions took place in pure aluminium matrix composites. Fracture morphology observation indicated that the good LTS of CF/Al composites corresponded to an intermediate fibre pull-out, whereas a planar fracture pattern related to a very poor LTS and fibre strength transfer. The results obtained suggested that interfacial bonding between carbon fibres and aluminium matrices had an important bearing on the mechanical properties of CF/Al composites. An intermediate interfacial bonding is expected to achieve good longitudinal and transverse tensile strengths of CF/Al composites.

Keywords

Carbon Fibre Aluminium Matrix Aluminium Matrix Composite Aluminium Alloy Matrix Alloy Matrix Composite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • H. M. Cheng
    • 1
  • A. Kitahara
    • 2
  • S. Akiyama
    • 2
  • K. Kobayashi
    • 1
  • Y. Uchiyama
    • 1
  • B. L. Zhou
    • 3
  1. 1.Department of Materials Science and Engineering, Faculty of EngineeringNagasaki UniversityNagasakiJapan
  2. 2.Government Industrial Research Institute-Kyushu, AIST, MITISagaJapan
  3. 3.Institute of Metal ResearchAcademia SinicaShenyangChina

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