The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 1990
Filed:
Jun. 25, 1987
Applicant:
Inventors:
Jocelyn I Petit, New Kensington, PA (US);
Philip E Bretz, Plum Boro, PA (US);
Henry G Paris, San Diego, CA (US);
Ralph R Sawtell, Lafayette, CA (US);
Diana K Denzer, Lower Burrell, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; C22C / ;
U.S. Cl.
CPC ...
428328 ; 428323 ; 428546 ; 428567 ; 75230 ; 75232 ; 148 / ; 148 / ; 148 / ; 148127 ; 148437 ; 148902 ; 420550 ;
Abstract
Composite materials having improved fracture toughness are formed by dispersing ductile inclusions in a less ductile matrix. The matrices may be formed from metals, such as high-strength aluminum alloys or ceramics. Bonding should be present between the inclusions and the matrix so that cracks in the composite material must pass through the inclusions.