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Preparation method of fine-grain biological magnesium-zinc alloy plate

An alloy plate, magnesium-zinc technology, applied in the field of preparation of fine-grained bio-magnesium-zinc alloy plate, can solve the problems of difficult grain size sub-micron level, unfavorable large-scale production, material size limitation, etc., to achieve excellent biophase Capacitance and safety, good prospects for biomedical and industrial applications, and good mechanical properties

Inactive Publication Date: 2021-02-02
上海隽美医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned patents have the following disadvantages: firstly, the radial channel angle extrusion process has a relatively large limit on the size of the processed material, and the size of the prepared material is usually small, which is not conducive to large-scale production
However, the above-mentioned patents have the following disadvantages: the directionally solidified magnesium-zinc alloy material is a cast alloy, and its grain size is difficult to refine to the submicron level, and its performance is also limited by the grain size

Method used

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  • Preparation method of fine-grain biological magnesium-zinc alloy plate

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Embodiment 1

[0027] The present embodiment provides a kind of preparation method of fine-grained bio-magnesium-zinc alloy plate, with reference to figure 1 shown, including the following steps:

[0028] A magnesium-zinc alloy cast slab containing 2% by weight of Zn, the balance of Mg and less than 0.01% of impurities is prepared; the size of the cast slab is 50mm (length) × 50mm (width) × 22mm (thickness).

[0029] The magnesium-zinc alloy cast slab is heated to a set temperature of 295°C, and rolled in a single pass at a temperature of 295°C, with a rolling reduction of 80%; as a preferred method, the rolling speed is 14m / min; Fine-grained magnesium-zinc alloy sheet.

[0030] refer to figure 2 As shown, it can be seen from the figure that a fine-grained magnesium-zinc alloy plate with a fine grain size of about 1 μm-2 μm can be obtained through the above-mentioned preparation method. The yield strength of the fine-grained magnesium-zinc alloy sheet at room temperature is 185MPa, and t...

Embodiment 2

[0032] This embodiment provides a method for preparing a fine-grained bio-magnesium-zinc alloy plate, comprising the following steps:

[0033] Prepare a magnesium-zinc alloy cast slab containing 2.1% by weight of Zn and the balance of Mg; the size of the cast slab is 60mm (length)×50mm (width)×25mm (thickness).

[0034] The magnesium-zinc alloy billet is heated to a set temperature of 290°C, and rolled in a single pass at a temperature of 290°C, the rolling reduction is 75%; the rolling speed is 12m / min; Magnesium zinc alloy sheet.

[0035] refer to image 3 As shown, it can be seen from the figure that a fine-grained magnesium-zinc alloy plate with a fine-grain size of about 3 μm-6 μm can be obtained through the above-mentioned preparation method. The room temperature yield strength of the fine-grained magnesium-zinc alloy sheet is 175MPa, and the tensile strength is 238MPa; the average corrosion rate of the fine-grained magnesium-zinc alloy sheet immersed in simulated body...

Embodiment 3

[0037] The present embodiment provides a kind of preparation method of fine-grained bio-magnesium-zinc alloy plate, with reference to figure 1 shown, including the following steps:

[0038] Prepare a magnesium-zinc alloy cast slab containing 1.9% by weight of Zn and the balance of Mg; the size of the cast slab is 60mm (length)×50mm (width)×20mm (thickness).

[0039] The magnesium-zinc alloy billet is heated to a set temperature of 295°C, and rolled in a single pass at a temperature of 295°C, with a rolling reduction of 85%; a rolling speed of 12m / min; Magnesium zinc alloy sheet.

[0040] refer to Figure 4 As shown, it can be seen from the figure that a fine-grained magnesium-zinc alloy plate with a fine grain size of about 1 μm-3 μm can be obtained through the above-mentioned preparation method. The yield strength of the fine-grained magnesium-zinc alloy sheet at room temperature is 175MPa, and the tensile strength is 245MPa; the average corrosion rate of the fine-grained ...

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Abstract

The invention provides a preparation method of a fine-grain biological magnesium-zinc alloy plate. The method comprises the following steps of preparing a magnesium-zinc alloy casting blank which comprises the following elements in percentage by weight: 1.8%-2.2% of Zn and the balance of Mg; and heating the magnesium-zinc alloy casting blank to 290 DEG C to 300 DEG C, and conducting one-pass rollat the temperature of 290 DEG C to 300 DEG C and the rolling reduction of 75%-85% in order to obtain the magnesium-zinc alloy plate with the fine grain size. According to the method, the grain size ofthe magnesium-zinc alloy can be effectively refined, the mechanical property and corrosion resistance of the biological magnesium-zinc alloy are improved, the steps of the preparation method are simple, and batch production is facilitated.

Description

technical field [0001] The invention relates to the field of processing magnesium alloy materials, in particular to a method for preparing fine-grained biological magnesium-zinc alloy plates. Background technique [0002] Magnesium and magnesium alloys have low density, high specific strength, and low recycling cost, and are known as green engineering materials in the 21st century. In addition, magnesium can also spontaneously corrode and degrade in the human environment, and has excellent biocompatibility. It is currently the most representative biomedical degradable metal material. Whether from industrial applications or biomedical applications, improving the strength of magnesium alloys, reducing the types of alloying elements (especially rare earth elements), and reducing the cost of alloys have always been the pursuit of this field. In addition, for biomedical magnesium alloys, the addition of harmful elements such as Al and rare earth should be avoided as much as poss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22F1/06
CPCC22C23/04C22F1/06
Inventor 王文辉张小农
Owner 上海隽美医疗科技有限公司
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