Ductile magnesium alloy

Abstract

The present invention relates to a corrosion resistant magnesium alloy which can be prepared with a justifiable expenditure of energy from scrap or impure copper containing precursors and displays a ductility such that it can be used as a casting or kneading material. The magnesium alloy contains, relative to the total weight of the magnesium alloy, 1 to 9 wt. % aluminium, 0.6 to 6 wt. % zinc, 0.1 to 2 wt. % manganese, 0 to 2 wt. % rare earth elements, 0.5 to 2 wt. % copper, wherein the weight ratio of aluminium to zinc lies in the range from 1:1 to 2:1.

1 . Magnesium alloy, containing, relative to the total weight of the magnesium alloy, 1 to 9 wt. % aluminium, 0.6 to 6 wt. % zinc, 0.1 to 2 wt. % manganese, 0 to 2 wt. % rare earth elements, 0.5 to 2 wt. % copper, wherein the weight ratio of aluminium to zinc lies in the range from 1:1 to 2:1. 
   
   
       2 . Magnesium alloy according to  claim 1 , characterized in that the aluminium content, relative to the total weight of the magnesium alloy, is 2 to 7.5 wt. %. 
   
   
       3 . Magnesium alloy according to  claim 1 , characterized in that the zinc content, relative to the total weight of the magnesium alloy, is 1 to 5 wt. %. 
   
   
       4 . Magnesium alloy according to  claim 1 , characterized in that the manganese content, relative to the total weight of the magnesium alloy, is 0.1 to 1 wt. %. 
   
   
       5 . Magnesium alloy according  claim 1 , characterized in that the copper content, relative to the total weight of the magnesium alloy, is 0.5 to 1 wt. %. 
   
   
       6 . Magnesium alloy according to  claim 1 , characterized in that it further contains nickel, iron and/or silicon. 
   
   
       7 . Magnesium alloy according to  claim 6 , characterized in that the nickel content, relative to the total weight of the magnesium alloy, is less than 0.005 wt. %. 
   
   
       8 . Magnesium alloy according to  claim 6 , characterized in that the iron content, relative to the total weight of the magnesium alloy, is less than 0.01 Wt. %. 
   
   
       9 . Magnesium alloy according to  claim 6 , characterized in that the silicon content, relative to the total weight of the magnesium alloy, is less than 0.1 wt. %. 
   
   
       10 . A method for the preparation of a magnesium alloy comprising melting magnesium scrap or impure, copper-containing precursors and then setting the level of constituents of the alloy to correspond to the composition of  claim 1 . 
   
   
       11 . (canceled) 
   
   
       12 . Magnesium alloy according to  claim 2 , characterized in that the zinc content, relative to the total weight of the magnesium alloy, is 1 to 5 wt. %. 
   
   
       13 . Magnesium alloy according to  claim 2 , characterized in that the manganese content, relative to the total weight of the magnesium alloy, is 0.1 to 1 wt. %. 
   
   
       14 . Magnesium alloy according to  claim 3 , characterized in that the manganese content, relative to the total weight of the magnesium alloy, is 0.1 to 1 wt. %. 
   
   
       15 . Magnesium alloy according  claim 2 , characterized in that the copper content, relative to the total weight of the magnesium alloy, is 0.5 to 1 wt. %. 
   
   
       16 . Magnesium alloy according  claim 3 , characterized in that the copper content, relative to the total weight of the magnesium alloy, is 0.5 to 1 wt. %. 
   
   
       17 . Magnesium alloy according to  claim 7 , characterized in that the iron content, relative to the total weight of the magnesium alloy, is less than 0.01 Wt. %. 
   
   
       18 . Magnesium alloy according  claim 4 , characterized in that the copper content, relative to the total weight of the magnesium alloy, is 0.5 to 1 wt. %. 
   
   
       19 . A method of forming a magnesium alloy product comprising casting the magnesium alloy of  claim 1  into a cast product. 
   
   
       20 . A method of forming a magnesium alloy material comprising kneading the magnesium alloy of  claim 1 . 
   
   
       21 . The method of  claim 19 , wherein the product is kneaded by a method selected from forging or rolling the magnesium alloy material.