R. Vancheeswaran et al., SIMULATION OF MICROSTRUCTURAL EVOLUTION DURING TMC MONOTAPE CONSOLIDATION PROCESSING, Acta materialia, 44(6), 1996, pp. 2175-2199
Citations number
73
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
The consolidation of fiber-reinforced titanium matrix composite (TMC)
monotapes produced by spray deposition is an important step in the man
ufacture of TMC components. The performance of this class of composite
s is controlled by fiber-matrix properties and by the composite's rela
tive density, fiber microbending stress/fracture and by the interfacia
l reaction layer thickness at the fiber-matrix interface after process
ing. These three microstructural features evolve during consolidation
processing. Models for predicting the microstructure's dependence upon
process conditions (i.e. the lime varying pressure and temperature) a
re combined with consolidation equipment dynamics to simulate the micr
ostructural evolution and to assess the relative ''processibility'' of
several silicon carbide fiber-titanium alloy matrix systems during th
eir transient consolidation processing. The dependence of the microstr
uctural state upon the material system's mechanical properties and the
monotape's initial geometry has also been investigated and is used to
propose guidelines for the selection of TMC system materials and mono
tape geometry parameters.