Abstract
This paper describes a process for the fabrication of Functionally Gradient Materials(FGM) by the Gas-pressure Combustion Sintering which is a combined process using combustion synthesis(SHS) and the hot isostatic press. We fabricated the (MOSi2-SiC) /TiAl FGM, for the purpose of applying then to airframes and engines of hypersonic vehicles because of the good oxidation resistance, the high temperature strength of the MoSi2-SiC composite and the excellent specific strength of TiAl. We clarified that the distribution of the chemical composition of FGN has a great influence on the residual stress which is generated during the process of fabrication and examined a boundary condition of the compositional distribution parameter to reduce the critical residual stress below the fracture strength.
