(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