High strength casting aluminum alloy material

Abstract

A high strength casting aluminum alloy material comprises (in weight %) Cu 2.0-6.0%, Mn 0.05-1.0%, Ti 0.01-0.5%, Cr 0.01-0.2%, Cd 0.01-0.4%, Zr 0.01-0.25%, B 0.005-0.04%, rare earth 0.05-0.3%, and balance aluminum and trace impurities. The alloy has reduced cost.

1 . A high-strength casting aluminum alloy material, comprising the following components by weight percentage: 2.0% to 6.0% of Cu, 0.05% to 1.0% of Mn, 0.01% to 0.5% of Ti, 0.01% to 0.2% of Cr, 0.01% to 0.4% of Cd, 0.01% to 0.25% of Zr, 0.005% to 0.04% of B, 0.05% to 0.3% of rare earth element and the balancing amount of Al and trace impurities. 
     
     
         2 . The high-strength casting aluminum alloy material according to  claim 1 , wherein the rare earth element is Pr, Ce, La or mixed rare earth elements RE. 
     
     
         3 . The high-strength casting aluminum alloy material according to  claim 1 , wherein the total content of various rare earth elements in the mixed rare earth elements RE is not lower than 98 wt %. 
     
     
         4 . The high-strength casting aluminum alloy material according to  claim 2 , wherein the content of Ce in the mixed rare earth elements RE is 40 wt % to 50 wt %. 
     
     
         5 . The high-strength casting aluminum alloy material according to  claim 3 , wherein the content of Ce in the mixed rare earth elements RE is 40 wt % to 50 wt %.