Abstract
The consolidation of metalized ceramic fibers by hot isostatic pressing (HIP) offers an attractive route for the manufacture of continuous fiber reinforced titanium matrix composites (TMCs). The performance of this class of composites is controlled by the fiber/matrix properties and by the composite's relative density, the grain size of the matrix alloy and the interfacial reaction layer thickness at the fiber–matrix interface after processing. Recently developed process models that predict the evolution of these microstructural attributes during consolidation processing are summarized and combined with consolidation equipment dynamics to simulate the microstructural evolution of PVD Ti–6Al–4V coated Sigma 1240 (SiC) monofilaments during HIP. For this system, diffusion accommodated grain sliding is the dominant densification mechanism for process cycles that preserve the refined grain size of the PVD metal coating.
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