Role of coatings in axial tensile strength of long fibre-reinforced metal-matrix composites

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(93)90379-7· OSTI ID:6324861

Xia, Zhenhai ^[1]

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1. Hebei Inst. of Tech., Tianjin (China). Dept. of Metallic Materials Science and Engineering

A model that includes effects of coatings, interfacial behavior, plastic deformation of matrix and reaction zone has been developed for analysis of the behavior of metal-matrix composites reinforced by coated fibres. The stress concentration caused by the cracks in the reaction zone was calculated from the model and the results show that it can be relaxed by choosing coatings of low modulus and controlling interfacial strength to a relatively low value. The predictions of the model in composite strength are consistent with that from the Griffith relationship with strong interfacial bonding and the experimental results for SiC-coated C/Al composites. Both the theory and the experiment show that high strength of the composites can be maintained by SiC coating even when there is a serious reaction at the coating/matrix interface.

• OSTI ID: 6324861
• Journal Information: Acta Metallurgica et Materialia; (United States), Vol. 41:7; ISSN 0956-7151
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
TENSILE PROPERTIES
CARBON FIBERS
COATINGS
COMPOSITE MATERIALS
BONDING
CRACKS
DEFORMATION
INTERFACES
MATHEMATICAL MODELS
MATRIX MATERIALS
PLASTICITY
SILICON CARBIDES
THEORETICAL DATA
ALLOYS
CARBIDES
CARBON COMPOUNDS
DATA
FABRICATION
FIBERS
INFORMATION
JOINING
MATERIALS
MECHANICAL PROPERTIES
NUMERICAL DATA
SILICON COMPOUNDS
360603* - Materials- Properties