Addition of Calcium and Vanadium to AlMg Alloys

Abstract

A process for the production of an aluminium-magnesium alloy with a content of at least 1% Mg, preferably 1-7% Mg where in a molten state 0.01-2% Ca and 0.01-0.3% V are added to the alloy.

1 . A process for the production of an aluminium-magnesium alloy comprising:
 adding 0.01-2% Ca and 0.01-0.3% V to an aluminum-magnesium alloy in the molten state,   wherein the aluminum-magnesium alloy comprises at least 1% Mg.   
     
     
         2 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein 0.05-1% Ca is added to the alloy in the molten state. 
     
     
         3 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein 0.07-0.5% Ca is added to the alloy in the molten state. 
     
     
         4 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein 0.02-0.15% V is added to the alloy in the molten state. 
     
     
         5 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein 0.02-0.08% V is added to the alloy in the molten state. 
     
     
         6 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein the aluminium-magnesium alloy comprises at least 2% Mg. 
     
     
         7 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein the Ca and V are added as two Al master alloys. 
     
     
         8 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein the addition of Ca and V is carried out at a melt temperature of 680-750° C. 
     
     
         9 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein at least one element selected from the group consisting of: Fe, Mn, Sr, P, Ni, Zn, Cu, Si, Ti, Cr, Mo, Zr, Hf, Ga, and B is added to the alloy in the molten state. 
     
     
         10 . The process for the production of an aluminum-magnesium alloy according to  claim 1 , further comprising adding the following elements to the alloy in the molten state, in addition to Al, Mg, Ca and V, either individually or as a master alloy:
 0.8-3.0% Fe;   0-2.5% Mn;   0-0.5% Ti;   0-0.4% Si;   0-0.8% Sr;   0-500 ppm P;   0-4.0% Cu;   0-10.0% Zn; and   up to 0.5% of an element or element group selected from the group consisting of chromium, nickel, molybdenum, zirconium, hafnium, calcium, gallium and boron.   
     
     
         11 . The process for the production of an aluminum-magnesium alloy according to  claim 1 , wherein the aluminium-magnesium alloy is a die-cast alloy. 
     
     
         12 . An alloy produced by the process according to  claim 1 , wherein the alloy consists of:
 0.8-3.0% Fe;   2.0-7.0% Mg;   0.01-2% Ca;   0.01-0.3% V;   Up to 2.5% Mn;   Up to 0.5% Ti;   Up to 0.4% Si;   Up to 0.8% Sr;   Up to 500 ppm P;   Up to 4.0% Cu;   Up to 10.0% Zn;   Up to 0.5% of an element or group of elements selected from the group consisting of chromium, nickel, molybdenum, zirconium, hafnium, gallium and boron, and   the balance aluminium and unavoidable impurities.   
     
     
         13 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein the aluminium-magnesium alloy comprises 1-7% Mg. 
     
     
         14 . The process for the production of an aluminium-magnesium alloy according to  claim 1 , wherein the aluminium-magnesium alloy comprises 2-7% Mg.