Patent ID: 6379480
Filing Date: 2002-04-30
Classification: B23K,B32B,Y10T

Abstract:
Process for obtaining thin, lightweight and rigid metal parts, said process comprising the following steps:producing a thin core made of a metal alloy; applying, to each face of the core, a shell consisting of reinforcing fibers having an elastic modulus at least equal to four times that of the metal alloy, said reinforcing fibers being embedded in a matrix made of a matrix-forming metal alloy; densifying the shells by pressing at least in the thickness direction at a superplasticity temperature of the metal alloy of the matrix; and diffusion-bonding of said shells to said core by pressing in the thickness direction of the part at an isothermal forging temperature of the metal alloy of the core and of the matrix of the shells; wherein a plurality of cavities is produced in the core and emerge at least on one face of the core; and wherein the shells are densified to the shape of the core.