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Wednesday, June 10, 2009 - 4:30 PM
LAT4.6

New Developments on AlMgSc Alloys for Advanced Aircraft Applications -Properties and Potentials-

S. Spangel, A. Buerger, I. Kroepfl, Aleris Aluminum Koblenz GmbH, Koblenz, Germany; G. Tempus, Airbus Deutschland GmbH, Bremen, Germany; J. Hackius, AIRBUS Deutschland GmbH, Bremen, Germany

In the past decade the demand for lighter structures and advanced manufacturing technologies has accelerated the development of AlMgSc alloys. These alloys are specially designed for optimum performance considering new manufacturing techniques such as laser beam welding, friction stir welding and creep forming.

Focus will be placed on highly advanced AlMgSc alloys such as Ko8242 and Ko8542 with a density in the range of today’s Al-Li alloys for fuselage skin or other applications where sheet products in complicated shaped parts are used.

With their excellent fatigue and damage tolerance properties, good corrosion performance eliminating the need for cladding, good weldability and their low density the AlMgSc alloys offer huge benefits in terms of weight and cost savings.

This paper will give a property overview of Aleris’ latest AlMgSc alloys including the influence of heat treatment and will outline some future developments and trends.


Summary: In the past decade the demand for lighter structures and advanced manufacturing technologies has accelerated the development of AlMgSc alloys. These alloys are specially designed for optimum performance considering new manufacturing techniques such as laser beam welding, friction stir welding and creep forming. Focus will be placed on highly advanced AlMgSc alloys such as Ko8242 and Ko8542 with a density in the range of today’s Al-Li alloys for fuselage skin or other applications where sheet products in complicated shaped parts are used. With their excellent fatigue and damage tolerance properties, good corrosion performance eliminating the need for cladding, good weldability and their low density the AlMgSc alloys offer huge benefits in terms of weight and cost savings. This paper will give a property overview of Aleris’ latest AlMgSc alloys including the influence of heat treatment and will outline some future developments and trends.