Abstract: An aluminum alloy including aluminum, about 6 to about 17.4 weight percent by weight magnesium, and at least one of chromium up to about 0.2 percent by weight, zirconium up to about 0.2 percent by weight and manganese up to about 0.3 percent by weight.

Abstract: An aluminum alloy including aluminum, about 2.5 to about 17.4 weight percent by weight magnesium, about 50 to about 3000 ppm calcium, and at least one of chromium up to about 0.2 percent by weight, zirconium up to about 0.2 percent by weight and manganese up to about 0.3 percent by weight.

Abstract: An aluminum alloy including aluminum, about 6 to about 17.4 weight percent by weight magnesium, and at least one of chromium up to about 0.2 percent by weight, zirconium up to about 0.2 percent by weight and manganese up to about 0.3 percent by weight.

Abstract: An aluminum alloy including aluminum, about 2.5 to about 17.4 weight percent by weight magnesium, about 50 to about 3000 ppm calcium, and at least one of chromium up to about 0.2 percent by weight, zirconium up to about 0.2 percent by weight and manganese up to about 0.3 percent by weight.

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.

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.

Abstract: Provided are an aluminum alloy and a production method thereof. In accordance with an embodiment, an aluminum-based mother material is melted to form a molten metal. An additive including silicon oxide is added to the molten metal. At least a portion of the silicon oxide is exhausted in the molten metal. The molten metal is cast.

Abstract: Provided are an aluminum alloy improving mechanical characteristics by allowing a magnesium-silicon compound to be distributed in an aluminum matrix without performing a heat treatment, and a production method thereof. In accordance with an aspect of the present disclosure, there is provided a method of producing an aluminum alloy, including: melting a magnesium mother alloy including a magnesium-silicon compound, and aluminum to form a molten metal; and casting the molten metal.

Abstract: Provided are an aluminum alloy and a manufacturing method thereof. In the method, aluminum and a master alloy containing a calcium (Ca)-based compound are provided. A melt is prepared, in which the master alloy and the Al are melted. The aluminum alloy may be manufactured by casting the melt.

Abstract: Provided are an aluminum alloy and a manufacturing method thereof. In the method, aluminum and a magnesium (Mg) master alloy containing a calcium (Ca)-based compound are provided. A melt is prepared, in which the Mg master alloy and the Al are melted. The aluminum alloy may be manufactured by casting the melt.

Abstract: Provided are a resistance spot welding electrode including a projection protruding from an opposing surface that faces a base metal, surrounding a center of the opposing surface, and including a round-shaped end that is capable of contacting the base metal, in order to expand a welding area, minimize expulsion, and significantly increase weld strength, and a resistance spot welding method using the same.

Abstract: Provided are an aluminum alloy and a production method thereof. In accordance with an embodiment, an aluminum-based mother material is melted to form a molten metal. An additive including silicon oxide is added to the molten metal. At least a portion of the silicon oxide is exhausted in the molten metal. The molten metal is cast.

Abstract: Provided are an aluminium alloy and a manufacturing method thereof. In the method, aluminium and a magnesium (Mg) master alloy containing a calcium (Ca)-based compound are provided. A melt is prepared, in which the Mg master alloy and the Al are melted. The aluminum alloy may be manufactured by casting the melt.

Abstract: Provided are an aluminium alloy and a manufacturing method thereof. In the method, aluminium and a master alloy containing a calcium (Ca)-based compound are provided. A melt is prepared, in which the master alloy and the Al are melted. The aluminum alloy may be manufactured by casting the melt.

Abstract: An apparatus and a method for producing a mold using a semisolid rapid tooling (SRT) are disclosed. The apparatus includes a die set, a mold flask, a means for heating the die set, a pressurization plunger, a graphite heat insulating board and a pressure control means. The method includes steps of forming die steel having a lot of slits, heating the die steel to a semisolid state where a liquid phase and a solid phase are mixed, filling the semisolid die steel into a mold flask by pressurizing the semisolid die steel; and cooling the die steel filled in the mold flask.