Zirconium-based metal glass alloy

Abstract

According to the present invention, provided is a zirconium-based metal glass alloy including, in atomic %, 62% or more and 67% or less of zirconium (Zr), 1% or more and 5% or less of niobium (Nb), 0.5% or more and 2% or less of titanium (Ti), 12% or more and 15% or less of copper (Cu), 8% or more and 10% or less of nickel (Ni), and 7.5% or more and 8.5% or less of aluminum (Al), the zirconium-based metal glass alloy having a composition represented by Zr 62-67 Nb 1-5 Ti 0.5-2 Cu 12-15 Ni 8-10 Al 7.5-8.5 .

What is claimed is: 
     
         1 . A zirconium-based metal glass alloy comprising, in atomic %, 62% or more and 67% or less of zirconium (Zr), 1% or more and 5% or less of niobium (Nb), 0.5% or more and 2% or less of titanium (Ti), 12% or more and 15% or less of copper (Cu), 8% or more and 10% or less of nickel (Ni), and 7.5% or more and 8.5% or less of aluminum (Al), the zirconium-based metal glass alloy having a composition represented by Zr 62-67 Nb 1-5 Ti 0.5-2 Cu 12-15 Ni 8-10 Al 7.5-8.5 . 
     
     
         2 . The zirconium-based metal glass alloy according to  claim 1 , wherein the total sum of the contents of Zr, Nb, and Ti (Zr+Nb+Ti) in atomic % is 65% or more and 70% or less. 
     
     
         3 . The zirconium-based metal glass alloy according to  claim 1 , wherein the sum of the contents of Nb and Ti (Nb+Ti) in atomic % is 5% or less, and the ratio of the contents of Nb and Ti (Nb/Ti) is 1.0 or more and 8.0 or less. 
     
     
         4 . The zirconium-based metal glass alloy according to  claim 1 , wherein a supercooled liquid region (ΔTx) obtained by difference between crystallization temperature Tx and glass transition temperature Tg (crystallization temperature Tx−glass transition temperature Tg) is 85 K or more. 
     
     
         5 . The zirconium-based metal glass alloy according to  claim 1 , wherein plastic strain (ε f ) is 10% or more. 
     
     
         6 . The zirconium-based metal glass alloy according to  claim 2 , wherein the sum of the contents of Nb and Ti (Nb+Ti) in atomic % is 5% or less, and the ratio of the contents of Nb and Ti (Nb/Ti) is 1.0 or more and 8.0 or less. 
     
     
         7 . The zirconium-based metal glass alloy according to  claim 2 , wherein a supercooled liquid region (ΔTx) obtained by difference between crystallization temperature Tx and glass transition temperature Tg (crystallization temperature Tx−glass transition temperature Tg) is 85 K or more. 
     
     
         8 . The zirconium-based metal glass alloy according to  claim 2 , wherein plastic strain (ε f ) is 10% or more. 
     
     
         9 . The zirconium-based metal glass alloy according to  claim 3 , wherein a supercooled liquid region (ΔTx) obtained by difference between crystallization temperature Tx and glass transition temperature Tg (crystallization temperature Tx−glass transition temperature Tg) is 85 K or more. 
     
     
         10 . The zirconium-based metal glass alloy according to  claim 3 , wherein plastic strain (ε f ) is 10% or more. 
     
     
         11 . The zirconium-based metal glass alloy according to  claim 4 , wherein plastic strain (ε f ) is 10% or more.