R. Vancheeswaran et al., MODEL-BASED SIMULATION OF THE CONSOLIDATION PROCESSING OF METAL-COATED FIBERS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 244(1), 1998, pp. 49-57
The consolidation of metalized ceramic fibers by hot isostatic pressin
g (HIP) offers an attractive route for the manufacture of continuous f
iber 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 pr
edict the evolution of these microstructural attributes during consoli
dation processing are summarized and combined with consolidation equip
ment dynamics to simulate the microstructural evolution of PVD Ti-6Al-
4V coated Sigma 1240 (SiC) monofilaments during HIP. Fur this system,
diffusion accommodated grain sliding is the dominant densification mec
hanism for process cycles that preserve the refined grain size of the
PVD metal coating. (C) 1998 Elsevier Science S.A. All rights reserved.