Aluminum Company of America

Sps Technologies, LLC

Alcoa Inc.

Roger D Doherty

Rishi P Singh

John Liu

Dhruba J Chakrabarti

Robert E Sanders, Jr

Bernard W Lifka

John S Slaney

A method for making a superplastically formable, aluminum alloy product which consists essentially of: about 2-3.8 wt. % magnesium; at least one dispersoid-forming element selected from the group consisting of: up to about 1.6 wt. % manganese, up to about 0.2 wt. % zirconium, and up to about 0.3 w. % chromium; at least one nucleation-enhancing element for recrystallization selected from: about 0.11-1.0 wt. % silicon, up to about 1.5 wt. % copper, and combinations thereof. Said alloy product has greater than about 300% elongation at a strain rate of about 0.0001-0.003/sec and a superplastic forming temperature between about 1000-1100&deg; F. due, in part to the preferred thermomechanical processing steps applied to its intermediate plate or slab product forms.

Method for making a superplastically-formable AL-Mg product

A superplastically formable, aluminum alloy product which consists essentially of about 2-10 wt. % magnesium; at least one dispersoid-forming element selected from the group consisting of: up to about 1.6 wt. % manganese, up to about 0.2 wt. % zirconium, and up to about 0.3 w. % chromium; at least one nucleation-enhancing element for recrystallization selected from: up to about 1.0 wt. % silicon, up to about 1.5 wt. % copper, and combinations thereof. Said alloy product has greater than about 300% elongation at a strain rate of at least about 0.0003/sec and a superplastic forming temperature between about 1000-1100.degree. F. due, in part, to the preferred thermomechanical processing steps subsequently applied thereto. A related method of manufacture is also disclosed herein.

Superplastically-formable Al-Mg-Si product and method

Disclosed is a method for making an aluminum alloy sheet having controlled levels of strength properties for forming into a container panel. A body of an aluminum alloy consisting essentially of 0.45 to 0.60 wt. % Cu, 1.1 to 1.7 wt. % Mg, 0.3 to 0.6 wt. % Si, 0.3 to 0.55 wt. % Fe, 0.5 to 1.2 wt. % Mn, the remainder aluminum, incidental elements and impurities, is hot rolled to a gauge in the range of 0.12 to 0.16 inch to provide a hot rolled product. The hot rolled product is cold rolled to provide a reduction of 50 to 80% in thickness, then solution heat treated in a range of 850.degree. to 110.degree. F. and rapidly cooled before cold rollign to a final sheet gauge by providing a reduction of 30 to 90% in thickness.

Aluminum alloy sheet for food and beverage containers

A work-strengthenable alloy which includes a gamma prime phase gamma prime particles comprising the following elements in percent by weight:

Alloys containing gamma prime phase and particles and process for

This invention relates to a nickel-cobalt alloy comprising the following elements in percent by weight:

Nickel-cobalt based alloys

A method of making a work-strengthenable alloy which includes a gamma prime phase which method comprises forming a melt comprising the following elements in percent by weight:

Alloys containing gamma prime phase and process for forming same

A method including providing aluminum having particles for stimulating nucleation of new grains, and deforming the aluminum under conditions for causing recrystallization to occur during deformation or thereafter, without subsequent heating being required to effect recrystallization.

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Wynnewood, PA, United States of America

Roger D Doherty