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Room-temperature high-plasticity magnesium-stannum-yttrium-zirconium alloy and preparation method thereof

A magnesium-zirconium master alloy and high plasticity technology, applied in the field of magnesium alloys, can solve the problems of expensive rare earth elements and other problems, and achieve the effects of fine grain size, refined grain size and high plasticity

Inactive Publication Date: 2018-11-13
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high price of rare earth elements, researchers are forced to develop low-cost high-performance magnesium alloys

Method used

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  • Room-temperature high-plasticity magnesium-stannum-yttrium-zirconium alloy and preparation method thereof
  • Room-temperature high-plasticity magnesium-stannum-yttrium-zirconium alloy and preparation method thereof
  • Room-temperature high-plasticity magnesium-stannum-yttrium-zirconium alloy and preparation method thereof

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Embodiment 1

[0031] A magnesium-tin-yttrium-zirconium alloy with high plasticity at room temperature, the magnesium alloy is composed of the following components in terms of mass percentage: Sn 0.21%; Y 0.41%; Zr 0.46%; unavoidable impurities ≤ 0.15%; the balance is magnesium.

[0032] The preparation method of this room temperature high plasticity magnesium-tin-yttrium-zirconium alloy is as follows:

[0033] (1) Melting: in CO 2 and SF 6 Under the mixed gas formed according to the volume ratio of 99:1, heat the pure magnesium ingot to 670°C, slag after the pure magnesium ingot is completely melted, and then raise the temperature to 720°C, first add pure tin ingot, and wait for the pure tin ingot to melt Finally, let it stand for 5 minutes, then add the magnesium-yttrium master alloy, after the magnesium-yttrium master alloy melts, let it stand for 5 minutes, and finally add the magnesium-zirconium master alloy, fully stir and smelt, and obtain the magnesium alloy melt after holding at 7...

Embodiment 2

[0039] A room temperature high plasticity magnesium-tin-yttrium-zirconium alloy, the magnesium alloy is composed of the following components by mass percentage: Sn 0.38%; Y 0.90%; Zr 0.52%; unavoidable impurities ≤ 0.15%; magnesium.

[0040] The preparation method of this room temperature high plasticity magnesium-tin-yttrium-zirconium alloy is as follows:

[0041] (1) Melting: in CO 2 and SF 6 Under the mixed gas formed according to the volume ratio of 99:1, the pure magnesium ingot is heated to 700°C, after the pure magnesium ingot is completely melted, the slag is removed, and then the temperature is raised to 730°C, and the pure tin ingot is added first, and the pure tin ingot is melted Finally, let it stand for 5 minutes, then add the magnesium-yttrium master alloy, after the magnesium-yttrium master alloy melts, let it stand for 5 minutes, and finally add the magnesium-zirconium master alloy, fully stir and smelt, and obtain the magnesium alloy melt after holding at 73...

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Abstract

The invention relates to a room-temperature high-plasticity magnesium-stannum-yttrium-zirconium alloy and a preparation method thereof, and belongs to the technical field of magnesium alloys. The magnesium alloy consists of the following components of, by mass percentage, 0.2-0.4% of Sn, 0.4-0.9% of Y, 0.4-0.6% of Zr, less than or equal to 0.15% of unavoidable impurities, and the balance Mg. The elements of Sn, Y and Zr are added into the magnesium alloy, and the contents of the three elements are controlled simultaneously, so that it is guaranteed that the magnesium alloy finally prepared hasthe high plasticity, the stretching rate is as high as 40%, and it is guaranteed that the magnesium alloy has the moderate yield strength and tensile strength. In the magnesium alloy preparation process, only a small quantity of rare-earth elements are required to be added, so that the plasticity of the magnesium alloy can be remarkably changed; the preparation method of the magnesium alloy is simple, traditional extruding is only required to be carried out at one time, and a complicated processing technology is not required; a smelting furnace and an extruding machine which are used serve asconvectional general equipment, and the transportability is high; and the magnesium alloy is convenient to achieve in industry.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloys, in particular to a magnesium-tin-yttrium-zirconium alloy with high plasticity at room temperature and a preparation method thereof. Background technique [0002] Magnesium and magnesium alloys have the advantages of low density, high specific strength, high specific stiffness, and good electromagnetic shielding performance. They have extremely important application values ​​and broad prospects in the fields of aerospace, automotive lightweight, and electronic communications. [0003] Compared with cast magnesium alloys, wrought magnesium alloys have greater development potential, and better mechanical properties can be obtained by adjusting the material structure. Due to the close-packed hexagonal crystal structure of magnesium alloy, there are few slip systems at room temperature, which makes it difficult to process and deform. Therefore, deformed magnesium alloys need to be processed b...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/06C22C1/03C22F1/06
Inventor 蒋斌王庆航宋江凤柴炎福赵俊黄光胜张丁非胡耀波潘复生
Owner CHONGQING UNIV
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