"ScaLA". 2nd generation of AlMgSc materials dedicated for short manufacturing chains in the aerospace industry

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"ScaLA". 2nd generation of AlMgSc materials dedicated for short manufacturing chains in the aerospace industry

Gradinger, Rudolf / Schneider, Roland / Palm, Frank

Since many decades aerospace products have to prove their physical performance. Meanwhile apparently soft technical features like long life cycles (corrosion poorness) and extended sustainability are gaining increasing interests. 2nd generation AlMgSc alloys ('Scalmalloy') can fulfil these partly contra dictionary requirements in a unique manner. Innovative process technologies like melt spinning enable an extraordinary highly stable microstructure compared to other aerospace Al-alloys, which is promising for new processing chains in order to maximise performance and minimize costs. Strength properties of 2nd generation AlMgSc alloys are adjustable by the amount of Sc added to the alloy. Appropriate processing generates a very dense network of nano-scaled Al3ScZr precipitates responsible for high strength (up to 600 MPa) and unbeaten good notch toughness. Mechanically fastened, bonded or fusion welded parts consisting of AlMgSc have demonstrated very good properties. A broad cooperation was established in order to connect industrial practicability with scientific depth. The regarding project 'ScaLA' is a public funded Austrian research project incorporating seven Austrian and two German companies. The TAKE-OFF funding programme is an Austrian impulse programme for aeronautics, run by the Federal Ministry of Transport, Innovation and Technology (BMVIT).