Aluminum casting alloy

Abstract

The disclosed subject-matter relates to the field of metallurgy, in particular to aluminum-based alloys, and can be used to manufacture thin-walled complex-shaped castings by casting in a metal mold, in particular for automotive components, parts of electronic devices, etc. The aluminum-based casting alloy comprises by wt. %: calcium 1.5-5.1; iron up to 0.7; silicon up to 1.0; zinc 0.1-1.8 and, optionally, one or more of manganese 0.2-2.5; titanium 0.005-0.1; zirconium 0.05-0.14; chrome 0.05-0.15, with calcium and zinc present in the alloy structure primarily as eutectic particles. The technical result is to provide a combination of process properties in casting and corrosion resistance.

1 . An Aluminum-based casting alloy with a distribution of alloying elements by wt. % comprising: 
       
         
           
                 
                 
                 
               
                     
                     
                 
                     
                   Calcium 
                   1.5-5.1 
                 
                     
                   Zinc 
                   0.1-1.8 
                 
                     
                   Iron 
                   up to 0.7 
                 
                     
                   Silicon 
                   up to 1.0, 
                 
                     
                     
                 
             
                
               
               
                
                
                
                
                
               
            
           
         
       
       and
 at least one element selected from the group comprising: 
 
       
         
           
                 
                 
                 
               
                     
                     
                 
                     
                   Manganese 
                   0.2-2.5 
                 
                     
                   Titanium 
                   0.005-0.1 
                 
                     
                   Zirconium 
                   0.05-0.14 
                 
                     
                   Chromium 
                   0.05-0.15 
                 
                 
                 
               
                     
                   Aluminum and impurities—the rest. 
                 
                     
                     
                 
             
                
               
               
                
                
                
                
               
            
             
                
                
               
            
           
         
       
     
     
         2 . The Aluminum-based casting alloy according to  claim 1 , wherein the distribution of the alloying elements by wt. % comprises: 
       
         
           
                 
                 
                 
               
                     
                     
                 
                     
                   Calcium 
                   2.8-5.0 
                 
                     
                   Manganese 
                   0.2- 1.2 
                 
                     
                   Iron 
                   up to 0.5 
                 
                     
                   Silicon 
                   up to 1.0, and 
                 
                     
                   Zinc 
                   0.1-1.6. 
                 
                     
                     
                 
             
                
               
               
                
                
                
                
                
                
               
            
           
         
       
     
     
         3 . The Aluminum-based casting alloy according to  claim 2 , wherein the Aluminum-based casting alloy is made in the form of a casting. 
     
     
         4 . The Aluminum-based casting alloy according to  claim 2 , wherein the calcium and zinc are in the form of eutectic particles. 
     
     
         5 . The Aluminum-based casting alloy according to  claim 4 , wherein the Aluminum-based casting alloy is made in the form of a casting. 
     
     
         6 . The Aluminum-based casting alloy according to  claim 1 , wherein the calcium and zinc are in the form of eutectic particles. 
     
     
         7 . The Aluminum-based casting alloy according to  claim 6 , wherein the Aluminum-based casting alloy is made in the form of a casting. 
     
     
         8 . The Aluminum-based casting alloy according to 1, wherein the Aluminum-based casting alloy is made in the form of a casting.