Influence of Thermal Residual Stresses on the Behaviour of Metal Matrix Composite Materials

Document Type

Article

Publication Title

Iranian Journal of Science and Technology, Transactions of Mechanical Engineering

Abstract

In this article, numerical simulations are used to study the bonding of ceramic–metal interfaces as well as ceramic-reinforced metal matrix composites (MMCs). For the design of the geometrical model of the MMC, the reinforcement is considered to be discontinuous (MMCD) and it consists of particles in which their distribution is homogeneous within the composite material. As a consequence of the existence of residual stresses in the material, there will be higher compressive stresses in the reinforcement and higher differences of stress values between the matrix and the reinforcement than those found without them. The novelty of this research lies in the fact that through the knowledge of the stress states at a given distance from the interface, the manufacturing processes of the MMCs could actually be improved. After the simulations, it is observed that the reinforcement is compressed due to the difference between the two thermal expansion coefficients of the constituent materials. The matrix is also compressed in the incident zone longitudinal to the reinforcement and in the zone surrounding the fibre in the radial direction. However, the matrix is tensioned in the longitudinal direction parallel to the reinforcement and in the transverse direction around the particle.

First Page

1903

Last Page

1922

DOI

https://doi.org/10.1007/s40997-023-00601-9

Publication Date

2023

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