(19)
(11) EP 0 668 936 A1

(12)

(43) Date of publication:
30.08.1995 Bulletin 1995/35

(21) Application number: 93925104.0

(22) Date of filing: 28.10.1993
(51) International Patent Classification (IPC): 
B22F 7/ 02( . )
B32B 15/ 01( . )
C22C 47/ 14( . )
B22F 7/ 04( . )
C22C 1/ 10( . )
C22C 47/ 20( . )
(86) International application number:
PCT/US1993/010360
(87) International publication number:
WO 1994/010351 (11.05.1994 Gazette 1994/11)
(84) Designated Contracting States:
DE ES FR GB NL

(30) Priority: 29.10.1992 US 19920968149

(71) Applicant: ALUMINIUM COMPANY OF AMERICA
Alcoa Center, PA 15069-0001 (US)

(72) Inventors:
  • HUNT, Warren H., Jr.
    Export, PA 15632 (US)
  • SAWTELL, Ralph R.
    Murrysville, PA 15668 (US)
  • OSMAN, Todd M.
    Coraopolis, PA 15108 (US)

(74) Representative: Madgwick, Paul Roland 
Ladas & Parry Altheimer Eck 2
D-80331 München
D-80331 München (DE)

   


(54) METAL MATRIX COMPOSITE HAVING ENHANCED TOUGHNESS AND METHOD OF MAKING