Rl. Goetz et al., MODELING OF THE CONSOLIDATION OF CONTINUOUS-FIBER METAL-MATRIX COMPOSITES VIA FOIL-FIBER-FOIL TECHNIQUES, Journal of materials engineering and performance, 2(3), 1993, pp. 333-340
The consolidation of metal-matrix composites (MMC) via hot isostatic p
ressing (HIP) of foil-fiber-foil layups has been investigated using fi
nite element method (FEM) metal flow analysis. For this purpose, the d
eformation pattern for various fiber arrangements was determined using
representative unit cells to describe extremes in behavior. For a giv
en fiber architecture, the consolidation time was found to be heavily
dependent on the ratio of the HIP pressure to average flow stress and
the friction conditions at the matrix-fiber interface. The specific in
fluence of material properties such as the rate sensitivity of the flo
w stress appears to enter only as a second order effect. The FEM solut
ions were used to construct HIP diagrams delineating temperature-time-
pressure combinations for full composite consolidation. Laboratory tri
als on subscale foil-fiber coupons were used to validate the FEM predi
ctions.