Copper alloy material

Abstract

A copper alloy material, containing Ni 1.8 to 5.0 mass % and Si 0.3 to 1.7 mass %, at a ratio of contents of Ni and Si, Ni/Si, of 3.0 to 6.0, and having a content of S of less than 0.005 mass %, with the balance of being Cu and inevitable impurities, wherein the copper alloy material satisfies formulae (1) to (4): 130× C +300≦ TS ≦130× C +650  (1) 0.001≦d≦0.020  (2) W≦150  (3) 10≦L≦800  (4) wherein TS represents a tensile strength (MPa) of the copper alloy material in a direction parallel to rolling; C represents the content (mass %) of Ni in the copper alloy material; d represents an average grain diameter (mm) of the copper alloy material; W represents a width (nm) of a precipitate free zone; and L represents a particle diameter (nm) of a compound on a grain boundary.

1 . A copper alloy material, comprising Ni 1.8 to 5.0 mass % and Si 0.3 to 1.7 mass %, at a ratio of contents of Ni and Si, Ni/Si, of 3.0 to 6.0, and having a content of S of less than 0.005 mass %, with the balance of being Cu and inevitable impurities, wherein the copper alloy material satisfies the following formulae (1) to (4):
   130× C+ 300 ≦TS≦ 130 ×C+ 650  (1)     0.001≦d≦0.020  (2)     W≦150  (3)     10≦L≦800  (4)   wherein TS represents a tensile strength (MPa) of the copper alloy material in a direction parallel to rolling (LD); C represents the content (mass %) of Ni in the copper alloy material; d represents an average grain diameter (mm) of the copper alloy material; W represents a width (nm) of a precipitate free zone (PFZ); and L represents a particle diameter (nm) of a compound on a grain boundary.   
     
     
         2 . The copper alloy material according to  claim 1 , further comprising any one or two or more in the following (I) to (IV) in 0.005 to 2.0 mass % in total:
 (I) one or two or more selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Mo, and Ag in 0.005 to 0.3 mass %;   (II) Mn 0.01 to 0.5 mass %;   (III) Co 0.05 to 2.0 mass %; and   (IV) Cr 0.005 to 1.0 mass %.   
     
     
         3 . The copper alloy material according to  claim 1 , further comprising Zn 0.2 to 1.5 mass %. 
     
     
         4 . The copper alloy material according to  claim 3 , further comprising any one or two or more in the following (I) to (IV) in 0.005 to 2.0 mass % in total:
 (I) one or two or more selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Mo, and Ag in 0.005 to 0.3 mass %;   (II) Mn 0.01 to 0.5 mass %;   (III) Co 0.05 to 2.0 mass %; and   (IV) Cr 0.005 to 1.0 mass %.   
     
     
         5 . The copper alloy material according to  claim 1 , further comprising Sn 0.05 to 1.5 mass %. 
     
     
         6 . The copper alloy material according to  claim 5 , further comprising any one or two or more in the following (I) to (IV) in 0.005 to 2.0 mass % in total:
 (I) one or two or more selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Mo, and Ag in 0.005 to 0.3 mass %;   (II) Mn 0.01 to 0.5 mass %;   (III) Co 0.05 to 2.0 mass %; and   (IV) Cr 0.005 to 1.0 mass %.   
     
     
         7 . The copper alloy material according to  claim 5 , further comprising Zn 0.2 to 1.5 mass %. 
     
     
         8 . The copper alloy material according to  claim 7 , further comprising any one or two or more in the following (I) to (IV) in 0.005 to 2.0 mass % in total:
 (I) one or two or more selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Mo, and Ag in 0.005 to 0.3 mass %;   (II) Mn 0.01 to 0.5 mass %;   (III) Co 0.05 to 2.0 mass %; and   (IV) Cr 0.005 to 1.0 mass %.   
     
     
         9 . The copper alloy material according to  claim 1 , further comprising Mg 0.01 to 0.20 mass %. 
     
     
         10 . The copper alloy material according to  claim 9 , further comprising any one or two or more in the following (I) to (IV) in 0.005 to 2.0 mass % in total:
 (I) one or two or more selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Mo, and Ag in 0.005 to 0.3 mass %;   (II) Mn 0.01 to 0.5 mass %;   (III) Co 0.05 to 2.0 mass %; and   (IV) Cr 0.005 to 1.0 mass %.   
     
     
         11 . The copper alloy material according to  claim 9 , further comprising Zn 0.2 to 1.5 mass %. 
     
     
         12 . The copper alloy material according to  claim 11 , further comprising any one or two or more in the following (I) to (IV) in 0.005 to 2.0 mass % in total:
 (I) one or two or more selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Mo, and Ag in 0.005 to 0.3 mass %;   (II) Mn 0.01 to 0.5 mass %;   (III) Co 0.05 to 2.0 mass %; and   (IV) Cr 0.005 to 1.0 mass %.   
     
     
         13 . The copper alloy material according to  claim 9 , further comprising Sn 0.05 to 1.5 mass %. 
     
     
         14 . The copper alloy material according to  claim 13 , further comprising any one or two or more in the following (I) to (IV) in 0.005 to 2.0 mass % in total:
 (I) one or two or more selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Mo, and Ag in 0.005 to 0.3 mass %;   (II) Mn 0.01 to 0.5 mass %;   (III) Co 0.05 to 2.0 mass %; and   (IV) Cr 0.005 to 1.0 mass %.   
     
     
         15 . The copper alloy material according to  claim 13 , further comprising Zn 0.2 to 1.5 mass %. 
     
     
         16 . The copper alloy material according to  claim 15 , further comprising any one or two or more in the following (I) to (IV) in 0.005 to 2.0 mass % in total:
 (I) one or two or more selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Mo, and Ag in 0.005 to 0.3 mass %;   (II) Mn 0.01 to 0.5 mass %;   (III) Co 0.05 to 2.0 mass %; and   (IV) Cr 0.005 to 1.0 mass %.