Magnesium-based alloy and method for the production thereof

Details Magnesium-based alloy and method for the production thereof Magnesium-based alloy and method for the production thereof

C - Chemistry, Metallurgy

22

C

C22C 23/02 (2006.01) C22C 1/02 (2006.01) C22C 1/03 (2006.01)

Patent

CA 2458363

The inventive magnesium-based alloy comprises the following components: 2.6- 3.6 mass % of aluminium, 0.11-0.25 mass % of zinc, 0.24-0.34 mass % of manganese, 0.8-1.1 mass % of silicium, the rest being magnesium. The inventive method for producing said alloy consists in loading alloying components of aluminium, zinc, manganese and silicium in the form of a ready-made solid master alloy of aluminium-zinc-manganese-silicium, casting molten magnesium, introducing a titanium-containing fusion cake together with a flux agent, continuously agitating said cake and soaking. Said invention makes it possible to reduce the production costs of the alloy and to improve the performance characteristics thereof in order to extend the use of said alloy for the automobile industry.

L'invention concerne un alliage à base de magnésium qui contient les composants suivants, en % en poids: aluminium 2,6 - 3,6, zinc 0,11 - 0,25, manganèse 0,24 - 0,34, silicium - 0,8 - 1,1, le reste étant constitué de magnésium. Pour obtenir cet alliage, on utilise un procédé qui consiste à charger les composants d'alliage (aluminium, zinc, manganèse) sous la forme d'un alliage d'addition solide préalablement préparé d'aluminium-zinc-manganèse-silicium, de verser du magnésium en fusion, d'introduire un bain contenant du titane avec un flux en effectuant le mélangeage en continu puis de procéder à la retenue. L'invention permet de réduire le coût de fabrication de l'alliage et d'augmenter les performances d'usage de l'alliage à des fins de son utilisation à large échelle en industrie automobile.

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