PROCESS FOR PRODUCING FIBER-REINFORCED METAL COMPOSITE MATERIAL

• Main Authors: YAMATSUTA, KOHJI, NISHIO, KEN-ICHI
• Format: Patent
• Language: English; French
• Published: 28.10.1986
• Edition: 4
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

: The invention provides a process for producing a fiber-reinforced metal composite material which involves mixing inorganic fibers with an aluminum alloy at a temperature at or above the melting point of the alloy. A composite material of improved physical properties is then produced by either of the two following alternative procedures. In a first procedure the composite is removed from the mold at a temperature that is not higher than the solid phase line of the alloy (i.e., the temperature at which a liquid phase appears in the alloy). The composite is then heated to a temperature above the solid phase line and the elevated temperature is held for a definite period of time (heat treatment). In a second procedure the composite is quenched to a temperature of 200.degree.C or lower from a temperature above the solid phase line but below the melting temperature. This quenching is done quickly before allowing the composite to cool to a temperature that is not higher than the solid phase line.