Titanium-based alloy and article manufactured from same

Abstract

The invention relates to nonferrous metallurgy, namely to the development of low-alloyed titanium alloys characterized by high-temperature strength and thermal stability, and can be used for manufacture of articles intended for long-term operation at high temperatures, namely components of exhaust systems of vehicle engines. titanium alloy containing aluminum, molybdenum, silicon, oxygen, nitrogen, iron, hydrogen, with the alloy components taken in the following ratio, % wt.:Aluminum1.5 to 3.0Molybdenum0.1 to 0.5Silicon0.1 to 0.6Iron0.2maxOxygen0.15maxCarbon0.1maxNitrogen0.03maxHydrogen0.015maxTitanium and inevitable impurities—balance,which in one embodiment additionally contains copper 0.5 to 1.5% wt., and article made thereof.A technical result of the embodiment of invention is the production of titanium alloy characterized by a combination of high mechanical and performance properties, including a higher level of creep resistance, with capability of cold forming.

1 . A titanium alloy containing aluminum, molybdenum, silicon, iron, oxygen, carbon, nitrogen, hydrogen, wherein the alloy components are in the following ratio, in weight %: 
       
         
           
                 
                 
                 
               
                     
                     
                 
                     
                   Aluminum 
                   1.5 to 3.0 
                 
                     
                   Molybdenum 
                   0.1 to 0.5 
                 
                     
                   Silicon 
                   0.1 to 0.6 
                 
                     
                   Iron 
                   no more than 0.2 
                 
                     
                   Oxygen 
                   no more than 0.15 
                 
                     
                   Carbon 
                   no more than 0.1 
                 
                     
                   Nitrogen 
                   no more than 0.03 
                 
                     
                   Hydrogen 
                   no more than 0.015 
                 
                     
                     
                 
             
                
               
               
                
                
                
                
                
                
                
                
                
               
            
           
         
         and a remaining balance is Titanium and inevitable impurities. 
       
     
     
         2 . The alloy according to  claim 1 , further comprising copper 0.5-1.5% wt. 
     
     
         3 . A titanium alloy article, wherein the article is made of the alloy according to  claim 1 . 
     
     
         4 . A titanium alloy article, wherein the article is made of the alloy according to  claim 2 .