Titanium-based alloy and article made of same

Abstract

The invention relates to the field of nonferrous metallurgy and particularly to development of titanium-based alloys that are resistant to high-temperature oxidation, and can be used for manufacture of articles operating under conditions of prolonged exposure to high temperatures, in particular for manufacture of components of vehicle engine exhaust systems. The titanium-based alloy consists of aluminum, zirconium, niobium, molybdenum, silicon, oxygen, nitrogen, iron, hydrogen, and carbon, and is characterized in that the components of the alloy are in the following ratio, in weight %. Aluminum 0.7-1.5 Zirconium 0.5-1.5 Niobium 0.5-1.5 Molybdenum 0.1-0.5 Silicon 0.5 max Iron 0.2 max Oxygen 0.15 max Carbon 0.1 max Nitrogen 0.03 max Hydrogen 0.015 max Titanium and inevitable impurities being the balance; and an article made of this alloy. The technical result achieved in the implementation of the invention is obtaining of a titanium alloy with the set of high mechanical and performance properties including increased level of high-temperature oxidation resistance.

1 . A titanium-based alloy consisting of aluminum, zirconium, niobium, molybdenum, silicon, oxygen, nitrogen, iron, hydrogen, and carbon, wherein the components of the alloy are in the following ratio, in weight %: 
       
         
           
                 
                 
                 
               
                     
                     
                 
                     
                   Aluminum 
                   0.7-1.5 
                 
                     
                   Zirconium 
                   0.5-1.5 
                 
                     
                   Niobium 
                   0.5-1.5 
                 
                     
                   Molybdenum 
                   0.1-0.5 
                 
                     
                   Silicon 
                   no more than 0.5 
                 
                     
                   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 . An article of the titanium-based alloy, wherein the article is made of the alloy according to  claim 1 .