Balathandan S Pillai

US Patent:

6846369, Jan 25, 2005

Filed:

Sep 7, 2000

Appl. No.:

09/656626

Inventors:

Steven A. Clark - Hales Corners WI, US
Balathandan S. Pillai - Glendale WI, US

Assignee:

Johnson Brass & Machine Foundry, Inc. - Saukville WI

International Classification:

C22C 2100

US Classification:

148417, 148415, 148416, 148549

Abstract:

A method for producing a cast aluminum alloy article having high strength and/or toughness is provided. The method includes providing a molten aluminum alloy, centrifugally casting the molten aluminum alloy to form a cast body; and hot isostatically processing the cast body to form a hipped body. The hipped body may optionally be solution heat treated to form a heat treated body, which may subsequently be precipitation hardened to further enhance the properties of the cast product as desired. The method allows the production of cast aluminum alloy articles having physical and mechanical properties similar to those obtained for articles produced from corresponding aluminum alloy chemistries by wrought techniques.

US Patent:

61464775, Nov 14, 2000

Filed:

Aug 17, 1999

Appl. No.:

9/376067

Inventors:

Steven A. Clark - Hales Corners WI
Balathandan S. Pillai - Glendale WI

Assignee:

Johnson Brass & Machine Foundry, Inc. - Saukville WI

International Classification:

C22F 1043
B22D 1300

US Classification:

148539

Abstract:

A method for producing a cast aluminum alloy article having high strength and/or toughness is provided. The method includes providing a molten aluminum alloy, centrifugally casting the molten aluminum alloy to form a cast body; and hot isostatically processing the cast body to form a hipped body. The hipped body may optionally be solution heat treated to form a heat treated body, which may subsequently be precipitation hardened to further enhance the properties of the cast product as desired. The method allows the production of cast aluminum alloy articles having physical and mechanical properties similar to those obtained for articles produced from corresponding aluminum alloy chemistries by wrought techniques.