Metal composite comprising aligned precipitate and preparation method therefor

Abstract

The present invention provides a metal composite with an oriented precipitate, in which a solid solution is created by performing solution treatment or homogenization on an alloy, a discontinuous cellular precipitate or lamellar precipitate of 40% or more per unit area of 500 μm×500 μm is forcibly created by aging and oriented by plastic working. The present invention provides a method of manufacturing a metal composite with an oriented precipitate which includes: a material preparing step of preparing a molded alloy; a solid solution creating step of creating a solid solution by performing heat treatment on the alloy in a single phase area; a precipitate forcible-creating step of creating a cellular precipitate or a lamellar precipitate of 40% or more per unit area of 500 μm×500 μm by aging the alloy containing the solid solution; and a precipitate orienting step of orienting the precipitate by performing plastic working on the alloy containing the precipitate.

1 . A metal composite with an oriented precipitate, wherein a solid solution is created by performing solution treatment or homogenization on an alloy, a discontinuous cellular precipitate or lamellar precipitate of 40% or more per unit area of 500 μm×500 μm is forcibly created by aging, and the forcibly created precipitate is oriented by plastic working. 
     
     
         2 . A metal composite with an oriented precipitate, wherein a solid solution is created by performing solution treatment or homogenization on an alloy, a discontinuous cellular precipitate or lamellar precipitate of 40% or more per unit area of 630 μm×480 μm is forcibly created by aging, and the forcibly created precipitate is oriented by plastic working. 
     
     
         3 . A metal composite with an oriented precipitate, wherein a solid solution is created by performing solution treatment or homogenization on an alloy, a discontinuous cellular precipitate or lamellar precipitate is forcibly created by aging, and the forcibly created precipitate is oriented by plastic working to have a length of 2.01 μm or more per unit area of 3.5 μm×1.5 μm in a copper base. 
     
     
         4 . The metal composite of  claim 1 , wherein the oriented precipitate has a length to diameter aspect ratio of 100 or more. 
     
     
         5 . The metal composite of  claim 4 , wherein the alloy that became the solid solution is rapidly cooled by water quenching or cooled by air. 
     
     
         6 . The metal composite of  claim 5 , wherein the aging is performed for three hours or more. 
     
     
         7 . The metal composite of  claim 6 , wherein precipitation-promoting metal is added in the solution treatment or homogenization process. 
     
     
         8 . The metal composite of  claim 7 , wherein the precipitation-promoting metal includes any one of titanium (Ti) or vanadium (V). 
     
     
         9 . A method of manufacturing a metal composite with an oriented precipitate, the method comprising:
 a material preparing step of preparing a molded alloy;/a solid solution creating step of creating a solid solution by performing heat treatment on the alloy in a single phase area;   a precipitate forcible-creating step of creating a cellular precipitate or a lamellar precipitate of 40% or more per unit area of 500 μm×500 μm by aging the alloy containing the solid solution; and   a precipitate orienting step of orienting the precipitate by performing plastic working on the alloy containing the precipitate.   
     
     
         10 . A method of manufacturing a metal composite with an oriented precipitate, the method comprising:
 a material preparing step of preparing a molded alloy;   a solid solution creating step of creating a solid solution by performing heat treatment on the alloy in a single phase area;   a precipitate forcible-creating step of creating a cellular precipitate or a lamellar precipitate of 40% or more per unit area of 630 μm×480 μm by aging the alloy containing the solid solution; and   a precipitate orienting step of orienting the precipitate by performing plastic working on the alloy containing the precipitate.   
     
     
         11 . A method of manufacturing a metal composite with an oriented precipitate, the method comprising:
 a material preparing step of preparing a molded alloy;   a solid solution creating step of creating a solid solution by performing heat treatment on the alloy in a single phase area;   a precipitate forcible-creating step of creating a cellular precipitate or a lamellar precipitate by aging the alloy containing the solid solution; and   a precipitate orienting step of orienting the precipitate to have a length of 2.0 μm or more per unit area of 3.5 μm×1.5 μm in a copper base by performing plastic working on the alloy containing the precipitate.   
     
     
         12 . The method of any one of  claim 9  wherein precipitation-promoting metal including any one of titanium (Ti) and vanadium (V) is added in the material preparing step. 
     
     
         13 . The method of  claim 12 , wherein the solid solution creating step is a process of performing heating within a temperature range of above the lowermost temperature where a single phase is maintained in the state diagram and below the melting temperature−7.5×X (X is wt % of an added component other than copper base) of a copper base phase for two hours or more. 
     
     
         14 . The method of  claim 12 , wherein the solid solution creating step is a process of performing heating within a temperature range of above the lowermost temperature where a single phase is maintained in the state diagram and below the melting temperature−7.5 ×X (X is wt % of an added component other than copper base) of a copper base phase for two hours or more. 
     
     
         15 . The method of  claim 14 , wherein the alloy is a copper alloy and (Ni+Si), which is X, is 4.8 to 7.5 wt %. 
     
     
         16 . The metal composite of  claim 2 , wherein the oriented precipitate has a length to diameter aspect ratio of 100 or more. 
     
     
         17 . The metal composite of  claim 3 , wherein the oriented precipitate has a length to diameter aspect ratio of 100 or more. 
     
     
         18 . The method of  claim 10  wherein precipitation-promoting metal including any one of titanium (Ti) and vanadium (V) is added in the material preparing step.