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Magnesium-zinc-manganese-tin-yttrium alloy and preparation method of same

An alloy and impurity technology, applied in the field of magnesium alloy and its preparation, can solve the problems of limited use range and low elongation after fracture, and achieve the effects of improving comprehensive mechanical properties, inhibiting grain growth, and refining grains

Active Publication Date: 2013-09-11
CHONGQING UNIV
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  • Application Information

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Problems solved by technology

[0004] The magnesium-zinc-manganese-tin series (patent application number 201110186910.X) and the magnesium-zinc-manganese-yttrium series (patent application number 201110150964.0) magnesium alloy developed by Qi Fugang and others have high extruded strength, but their elongation after fracture is relatively low. Low, less than 11%, limits the scope of use

Method used

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Embodiment 1

[0045] The method for preparing magnesium-zinc-manganese-tin-yttrium alloy in the present embodiment comprises the following steps:

[0046] 1) smelting: at first select raw material according to the formula of table 1 embodiment 1, wherein raw material is industrial pure magnesium, industrial pure zinc, industrial pure tin, Mg-30%Y master alloy and Mg-5%Mn master alloy; Then raw material Melt in a vacuum induction furnace filled with argon, stir for 2-5 minutes after all melted to make the ingredients uniform; finally close the induction furnace, take out the crucible and cool it with water cooling.

[0047] 2) Machining: turning to remove the oxide layer on the surface of the alloy obtained in step 1), and making the size of the processed magnesium alloy suitable for extrusion processing;

[0048] 3) Homogenization treatment: heat the alloy obtained in step 2) to 420°C with the furnace, and keep it at this temperature for 12 hours for homogenization annealing, and the heatin...

Embodiment 2

[0051] The difference between this embodiment and embodiment 1 is that the proportion of raw materials selected in this embodiment is the same as the formula in embodiment 2 of table 1.

Embodiment 3

[0053] The difference between this embodiment and embodiment 1 is that the proportion of raw materials selected in this embodiment is the same as the formula of embodiment 3 in table 1.

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Abstract

The invention discloses a magnesium-zinc-manganese-tin-yttrium alloy and a preparation method of the same. The mass percentage content of each component of the magnesium-zinc-manganese-tin-yttrium alloy is as follows: Zn: 2-8%, Mn: 0.1-3%, Sn: 1-6%, Y: 0.1-4%, the inevitable impurities of not more than 0.15%, and the balance of magnesium. The preparation method comprises the following steps of: firstly, adding the selected raw materials in a vacuum induction furnace, smelting and cooling with water, then, machining the smelted alloy to a proper size in a rolling mill, annealing the machined alloy, and finally extruding the annealed alloy into bars. The alloy provided by the invention contains very little rare earth yttrium, during smelting and hot working, crystalline grains can be refined, and sequentially, the comprehensive mechanical property of the alloy is improved; with the yttrium, the hot machining temperature of the alloy can be raised, the resistance to deformation in hot machining is reduced, and the machining efficiency is improved. The magnesium alloy provided by the invention needs simple preparation technology, and has low requirement on production equipment.

Description

technical field [0001] The invention relates to a magnesium alloy and a preparation method thereof, in particular to a high-strength magnesium-zinc-manganese-tin-yttrium alloy series magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium alloy is the lightest commercial metal structure material. The density of commonly used magnesium alloy is about 2 / 3 of that of aluminum alloy and 1 / 4 of that of steel. Compared with other metal structural materials, magnesium alloy has the advantages of higher specific strength and specific stiffness, strong shock absorption, electromagnetic shielding and radiation resistance, easy cutting and processing, and easy recycling. It is widely used in automobiles, electronics, electrical appliances, transportation, aviation Aerospace and other fields have important application value and broad application prospects. They are the third type of metal structural materials developed after steel and aluminum alloys, a...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/04C22C23/06
Inventor 张丁非潘复生胡光山谌夏董井忍柴森森余大亮郭非蒋璐瑶
Owner CHONGQING UNIV
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