| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for forming a metal matrix composite having high specific strength and uniformly stable properties and being manufacturable at a low cost. SOLUTION: In the former stage where hot isostatic pressing (HIP) is applied at a temperature at which HIP treatment can be done and which is within a high-temperature range of the diffusion bonding temperature of the metal matrix, to a pressure vessel in which a preform prepared by incorporating reinforcing fibers of silicon carbide, etc., into a metal matrix of titanium or titanium alloy is sealed, the inside of the vessel to which initial pressure is applied is subjected to temperature raising up to a temperature in the region lower than the above HIP treatment temperature and within the low-temperature range or medium-temperature range of plastic deformation temperature and this temperature region is maintained for a prescribed period of time to carry out preforming. For example, in the case of the above titanium or titanium alloy, temperature in the pressure vessel at the above preforming is made to about 300 deg.C to <700 deg.C and also pressure in the pressure vessel is made to about 30 kg/cm<2> to 100 kg/cm<2> . |
