Alloy production method and alloy produced by the same

Abstract

Provided are an alloy production method that may easily distribute a compound in a matrix of an alloy while maintaining the quality of a molten metal, and an alloy produced by the same. In accordance with an exemplary embodiment, the method includes forming a molten metal in which a mother alloy including at least one kind of first compound and a casting metal are melted, and casting the molten metal, wherein the mother alloy is a magnesium mother alloy or aluminum mother alloy.

What is claimed is: 
     
         1 . A method of producing an alloy, comprising:
 forming a molten metal in which a mother alloy including at least one kind of first compound and a casting metal are melted; and   casting the molten metal   wherein the mother alloy is a magnesium mother alloy or aluminum mother alloy.   
     
     
         2 . The method of  claim 1 , wherein the first compound has a higher melting point than the casting metal. 
     
     
         3 . The method of  claim 1 , wherein the casting metal is any one selected from the group consisting of tin, aluminum, zinc, magnesium, copper, nickel, cobalt, iron, titanium, vanadium, molybdenum, tungsten, and alloys thereof. 
     
     
         4 . The method of  claim 1 , wherein the first compound is formed by exhausting at least a portion of a second compound in which at least two components are bonded in a magnesium molten metal or aluminum molten metal. 
     
     
         5 . The method of  claim 4 , wherein the first compound is formed by substantially completely exhausting the second compound in a magnesium molten metal or aluminum molten metal. 
     
     
         6 . The method of  claim 4 , wherein the first compound is a compound in which a component supplied from the exhausted second compound and a metal component in the magnesium molten metal are bonded to each other. 
     
     
         7 . The method of  claim 6 , wherein the metal component is magnesium or aluminum. 
     
     
         8 . The method of  claim 4 , wherein the first compound is a compound produced by a bonding between components respectively supplied from the exhausted at least two kinds of second compounds. 
     
     
         9 . The method of  claim 1 , wherein the first compound is a compound formed by melting at least a portion of any one of calcium or strontium in the magnesium molten metal or aluminum molten metal. 
     
     
         10 . The method of  claim 1 , wherein the first compound is a compound added in a molten metal of the mother alloy. 
     
     
         11 . The method of  claim 10 , wherein the first compound is a compound produced by a mechanical alloying. 
     
     
         12 . The method of  claim 1 , wherein the first compound comprises a magnesium compound. 
     
     
         13 . The method of  claim 12 , wherein the magnesium compound comprises at least one selected from the group consisting of a magnesium-calcium compound, a magnesium-aluminum-calcium compound, a magnesium-strontium compound, and a magnesium-silicon compound. 
     
     
         14 . The method of  claim 12 , wherein the magnesium compound comprises at least one selected from the group consisting of Mg 2 Ca, (Mg,Al) 2 Ca, Mg 2 Sr, Mg 23 Sr 6 , Mg 38 Sr 9 , Mg 17 Sr 2 , and Mg 2 Si. 
     
     
         15 . The method of  claim 1 , wherein the first compound comprises an aluminum compound. 
     
     
         16 . The method of  claim 15 , wherein the aluminum compound comprises at least one selected from an aluminum-calcium compound, an aluminum-strontium compound, and an aluminum-cesium compound. 
     
     
         17 . The method of  claim 15 , wherein the aluminum compound comprises at least one selected from the group consisting of Al 2 Ca, Al 4 Ca, Al 4 Sr, Al 2 Sc, and Al 2 Ce. 
     
     
         18 . The method of  claim 1 , wherein the first compound comprises a calcium-silicon compound. 
     
     
         19 . The method of  claim 18 , wherein the calcium-silicon compound comprises CaSi. 
     
     
         20 . The method of  claim 4 , wherein the second compound comprises a calcium-based compound, a strontium-based compound, a silicon-based compound, or a rare earth metal compound. 
     
     
         21 . The method of  claim 20 , wherein the calcium-based compound comprises at least one selected from the group consisting of calcium oxide (CaO), calcium cyanide (CaCN 2 ), and calcium carbide. 
     
     
         22 . The method of  claim 20 , wherein the strontium-based compound comprises strontium oxide (SrO). 
     
     
         23 . The method of  claim 20 , wherein the silicon-based compound comprises silicon oxide (SiO 2 ). 
     
     
         24 . The method of  claim 20 , wherein the rare earth metal compound comprises at least one of scandium oxide (Sc 2 O 3 ) and cesium oxide (CeO 2 ). 
     
     
         25 . The method of  claim 1 , wherein the producing of the magnesium mother alloy comprises:
 adding at least one kind of second compound in which two or more components are bonded to a magnesium molten metal;   exhausting at least a portion of the second compound; and   casting the magnesium molten metal to produce a first magnesium mother alloy.   
     
     
         26 . The method of  claim 25 , wherein the producing of the magnesium mother alloy further comprises adding the first magnesium mother alloy to a magnesium molten metal and diluting the first magnesium mother alloy to form a second magnesium mother alloy. 
     
     
         27 . The method of  claim 1 , wherein the producing of the aluminum mother alloy comprises:
 adding at least one kind of second compound in which two or more components are bonded in an aluminum molten metal;   exhausting at least a portion of the second compound; and   casting the aluminum molten metal to produce a first aluminum mother alloy.   
     
     
         28 . The method of  claim 27 , wherein the producing of the aluminum mother alloy further comprises adding the first aluminum mother alloy to an aluminum molten metal and diluting the first aluminum mother alloy to form a second aluminum mother alloy. 
     
     
         29 . The method of  claim 25 , wherein the second compound is dispersively added to a surface of an upper layer portion of the magnesium molten metal. 
     
     
         30 . The method of  claim 29 , wherein the upper layer portion of the magnesium molten metal is stirred. 
     
     
         31 . The method of  claim 30 , wherein the stirring is performed in the upper layer portion from the surface of the magnesium molten metal to a point which is not more than 20% of a total depth of the magnesium molten metal. 
     
     
         32 . The method of  claim 25 , wherein any one component of the second compound is removed upward from a surface of the magnesium molten metal. 
     
     
         33 . The method of  claim 1 , wherein the producing of the mother alloy comprises:
 adding calcium or strontium to a mother alloy molten metal; and   exhausting at least a portion of the calcium or strontium in the magnesium molten metal.   
     
     
         34 . The method of  claim 1 , wherein the aluminum mother alloy is produced by adding a magnesium alloy in an aluminum molten metal, and the magnesium alloy is produced by a process comprising:
 adding calcium or strontium to a magnesium molten metal; and   melting at least a portion of the calcium or strontium in the magnesium molten metal.   
     
     
         35 . The method of  claim 1 , wherein the aluminum mother alloy is produced by adding an aluminum alloy in an aluminum molten metal, and the aluminum alloy is produced by a process comprising:
 adding calcium or strontium to an aluminum molten metal; and   melting at least a portion of the calcium or strontium in the aluminum molten metal.   
     
     
         36 . The method of  claim 1 , wherein the magnesium mother alloy is produced by adding an aluminum alloy in a magnesium molten metal, and the aluminum alloy is produced by a process comprising:
 adding calcium or strontium to an aluminum molten metal; and   melting at least a portion of the calcium or strontium in the aluminum molten metal.   
     
     
         37 . The method of  claim 1 , wherein the magnesium mother alloy is produced by adding a magnesium alloy in a magnesium molten metal, and the magnesium alloy is produced by a process comprising:
 adding calcium or strontium to a magnesium molten metal; and   melting at least a portion of the calcium or strontium in the magnesium molten metal.   
     
     
         38 . The method of  claim 1 , wherein the producing of the aluminum mother alloy comprises adding a magnesium alloy containing the first compound to the aluminum molten metal. 
     
     
         39 . The method of  claim 38 , wherein the producing of the magnesium alloy containing the first compound comprises:
 adding a second compound to a magnesium molten metal; and   casting the magnesium molten metal.   
     
     
         40 . An alloy comprising:
 a metal matrix; and   a first compound existing in the metal matrix,   wherein the first compound is a compound which is included in a magnesium mother alloy or aluminum mother alloy and is added in a molten metal produced so as to cast the alloy.   
     
     
         41 . The alloy of  claim 40 , wherein the metal matrix comprises any one selected from the group consisting of tin, aluminum, zinc, magnesium, copper, nickel, cobalt, iron, titanium, vanadium, molybdenum, tungsten, and alloys thereof. 
     
     
         42 . The alloy of  claim 40 , wherein the first compound comprises a magnesium compound. 
     
     
         43 . The alloy of  claim 42 , wherein the magnesium compound comprises at least one selected from the group consisting of a magnesium-calcium compound, a magnesium-aluminum-calcium compound, a magnesium-strontium compound, and a magnesium-silicon compound. 
     
     
         44 . The alloy of  claim 42 , wherein the magnesium compound comprises at least one selected from the group consisting of Mg 2 Ca, (Mg,Al) 2 Ca, Mg 2 Sr, Mg 23  Sr 6 , Mg 38 Sr 9 , Mg 17 Sr 2 , and Mg 2 Si. 
     
     
         45 . The alloy of  claim 40 , wherein the first compound comprises an aluminum compound. 
     
     
         46 . The alloy of  claim 45 , wherein the aluminum compound comprises at least one selected from an aluminum-calcium compound, an aluminum-strontium compound, and an aluminum-cesium compound. 
     
     
         47 . The alloy of  claim 45 , wherein the aluminum compound comprises at least one selected from the group consisting of Al 2 Ca, Al 4 Ca, Al 4 Sr, Al 2 Sc, and Al 2 Ce. 
     
     
         48 . The alloy of  claim 45 , wherein the first compound comprises a calcium-silicon compound. 
     
     
         49 . The alloy of  claim 48 , wherein the calcium-silicon compound comprises CaSi. 
     
     
         50 . The alloy of  claim 40 , wherein the alloy comprises an inclusion at a concentration which is lower than that of an inclusion of an alloy in which a mother alloy no containing the first compound is added and which is produced under the same condition.