Aluminum Die-Casting Alloys

Abstract

An aluminum die-casting alloy comprising: 1 to 6% by weight nickel, 1 to 5% by weight manganese, 0.1 to 0.4% by weight zirconium, 0.1 to 0.4% by weight vanadium, 0. 1 to 1% by weight tungsten and/ or 0. 1 to 1% molybdenum, optionally up to 2% by weight iron, optionally up to 1% by weight titanium, optionally up to 2% by weight magnesium, optionally up to 0.5% by weight silicon, optionally up to 0.5% by weight copper, optionally up to 0,5% by weight zinc, optionally total maximum 5% by weight transition elements including strontium, scandium, lanthanum, yttrium, hafnium, niobium, tantalum, and/or chromium, and aluminum as the remainder with further elements present as impurities due to production such that the total maximum of impurity elements is 1% by weight.

1 . An aluminum die-casting alloy comprising:
 1 to 6% by weight nickel,   1 to 5% by weight manganese,   0.1 to 0.4% by weight zirconium,   0.1 to 4.4% by weight vanadium,   at least one of 0.1 to 1% by weight tungsten and 0.1 to 1% molybdenum,   optionally up to 2% by weight iron,   optionally up to 1% by weight titanium,   optionally up to 2% by weight magnesium,   optionally up to 0.5% by weight silicon,   optionally up to 0.5% by weight copper,   optionally up to 0.5% by weight zinc,   optionally total maximum 5% by weight transition elements selected from the group consisting of strontium, scandium, lanthanum, yttrium, hafnium, niobium, tantalum, and chromium, and aluminum as the remainder with further elements present as impurities due to production such that the total maximum of impurity elements is 1% by weight.   
     
     
         2 . The aluminum die-casting alloy according to  claim 1 , comprising 4 to 6% by weight nickel. 
     
     
         3 . The aluminum die-casting alloy according to  claim 1 , comprising 2 to 4% by weight manganese. 
     
     
         4 . The aluminum die-casting alloy according to  claim 1 , comprising 0.2 to 0.8% by weight tungsten. 
     
     
         5 . The aluminum die-casting alloy to  claim 1 , comprising 0.2 to 0.8% by weight molybdenum. 
     
     
         6 . The aluminum die-casting alloy according to  claim 1 , comprising 0.1 to 0.3% by weight zirconium. 
     
     
         7 . The aluminum die-casting alloy according to  claim 1 , comprising 0.3 to 0.4% by weight vanadium. 
     
     
         8 . The aluminum die-casting alloy according to  claim 1 , including substantially uniformly dispersed particles of Al 3 V x Zr 1-x , where x is a fraction of unity that depends on the ratio of Zr:V in the alloy, the particles having an equivalent diameter of less than about 50 nm. 
     
     
         9 . The aluminum die-casting alloy according to  claim 1 , including particles of Al 3 Ni having an equivalent diameter of less than about 500 nm. 
     
     
         10 . The aluminum die-casting alloy according to  claim 1 , including substantially uniformly dispersed particles of Al 12 Mn 1-x W x , where x is a fraction of unity that depends on the ratio of W:Mn in the alloy, the particles having an equivalent diameter of less than about 500 nm. 
     
     
         11 . The aluminum die-casting alloy of  claim 10 , wherein the Al 12 Mn 1-x W x , particles have a body centered cubic crystal structure. 
     
     
         12 . The aluminum die-casting alloy of  claim 10 , wherein the al 12 Mn 1-x W x  particles are semi-coherent with the aluminum matrix. 
     
     
         13 . The aluminum die-casting alloy according to  claim 1 , including substantially uniformly dispersed particles of Al 12 Mn 1-x Mo x  where x is a fraction of unity that depends on the ratio of Mo:Mn in the alloy, the particles having an equivalent diameter of less than about 500 nm. 
     
     
         14 . The aluminum die-casting alloy of  claim 13 , wherein the Al 12 Mn 1-x Mo x  particles have a body centered cubic crystal structure. 
     
     
         15 . The aluminum die-casting alloy of  claim 13 , wherein the Al 12 Mn 1-x Mo x  particles are semi-coherent with the aluminum matrix. 
     
     
         16 . The aluminum die-casting alloy according to  claim 1 , including substantially uniformly dispersed particles of Al 12 Mn 1-x-y W x Mo y , where x and y are fractions of unity that depend on the ratio of W:Mo:Mn in the alloy, the particles having an equivalent diameter of less than about 500 nm. 
     
     
         17 . The aluminum die-casting alloy of  claim 16 , wherein the Al 12 Mn 1-x-y W x Mo y  particles have a body centered cubic crystal structure. 
     
     
         18 . The aluminum die-casting alloy of  claim 16 , wherein the Al 12 Mn 1-x-y W x Mo y  particles are semi-coherent with the -aluminum matrix. 
     
     
         19 . A high pressure die-cast component made from an aluminum alloy according to  claim 1 . 
     
     
         20 . A cast component made from an aluminum alloy according to  claim 1  where in the alloy is solidified in a metal water-cooled mold. 
     
     
         21 . A method of producing a cast component made from an aluminum alloy according to  claim 1 , wherein the alloy is age-hardened by holding the solidified cast component at a temperature of 350° C. to 450° C. for 2 to 12 hours.