Abstract
The mechanical behaviour of layered systems, consisting of layers of monolithic titanium alloy, (IMI834) and titanium metal matrix composite, (Ti-MMC) is examined. A finite element based micromechanical model was developed to investigate the mechanical response of the systems subjected to four point bending. Two types of layered systems were examined: the first designated as C type with Ti-MMC in the centre of the beam, and IMI834 on the outside, and an S type which consists of a Ti-MMC layer on the outside and IMI834 on the inside. A representative volume element (RVE)was defined and boundary conditions imposed to simulate bending of the layered systems. While the S type system exhibited higher stiffness and linear behaviour up to fracture, the C type system exhibited more ductile behaviour prior to fracture. The overall predicted behaviour of the two systems was in good agreement with experimental results.
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