Magnesium alloy for room temperature and manufacturing method thereof
AssigneeKorea Institute of Industrial Technology
InventorsShae K. KIM, Jung-Ho SEO
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Abstract
Provided is a magnesium alloy for room temperature, which is manufactured by adding CaO onto a surface of a molten magnesium alloy and exhausting the CaO through a reduction reaction of the CaO with the molten magnesium alloy. Resultantly, the magnesium alloy with CaO added has more improved room-temperature mechanical properties (tensile strength, yield strength, elongation) than magnesium alloys without using CaO. Furthermore, as the added amount of CaO increases, room-temperature mechanical properties (tensile strength, yield strength, elongation) increase as well.
Claims11
A method of manufacturing a magnesium-based alloy, the method comprising:
- melting magnesium or magnesium alloy;
- adding 0.05% to 1.2% by weight of calcium oxide (CaO) onto a surface of a melt in which the magnesium or magnesium alloy is melted;
- exhausting the CaO through surface stirring to allow the CaO not to substantially remain in the magnesium or magnesium alloy through a sufficient reaction between the melt and the CaO;
- and
- allowing calcium (Ca) produced by the reaction to react with the melt such that the Ca does not substantially remain in the magnesium or magnesium alloy.
A magnesium-based alloy, characterized by that the magnesium-based alloy is manufactured by adding 0.05% to 1.2% by weight of CaO into a molten magnesium or magnesium alloy, and partially or wholly exhausting the CaO through a reduction reaction of the CaO with the molten magnesium or magnesium alloy,
- wherein the magnesium-based alloy contains a compound formed through combination of Ca with Mg or other alloying elements in the magnesium-based alloy to thereby have larger room-temperature mechanical properties than those of magnesium or magnesium alloys into which CaO is not added.
Dependencies are inferred from the claim text.