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A kind of magnesium alloy plate with high formability at room temperature and preparation method thereof

A technology for magnesium alloys and plates, applied in metal rolling and other directions, can solve problems such as inability to produce large-sized plates, and achieve the effects of outstanding formability, simplified forming methods, and clean grain boundaries

Active Publication Date: 2020-03-27
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the extrusion process can significantly refine the structure and improve the subsequent deformation ability, it cannot produce large-size plates

Method used

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  • A kind of magnesium alloy plate with high formability at room temperature and preparation method thereof
  • A kind of magnesium alloy plate with high formability at room temperature and preparation method thereof
  • A kind of magnesium alloy plate with high formability at room temperature and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Now remove the scale layer of pure Zn and pure magnesium, and weigh the ingredients. The mass percentage of Zn in the prefabricated alloy is 0.5wt.%, and the balance is magnesium. The alloy is smelted in a well-type resistance furnace with a rated power of about 7.5kW and a furnace size of Φ550×600mm, equipped with a protective gas delivery device and a PID temperature control device. The graphite crucible for smelting has an inner diameter of 100mm and a depth of 160mm, and the mass of the molten alloy for a single smelting is about 1.5kg. The casting mold is a low-carbon steel metal mold, and the obtained ingot size is a square billet of 120×33×200 mm. In order to prevent the alloy from being oxidized and burned during the smelting process, gas protection is used throughout the smelting process, where N 2 For conveying gas, SF 6For protective gas. The alloy smelting process is as follows: after preheating the crucible to remove moisture, first add pure magnesium, ...

Embodiment 2

[0031] Now remove the scale layer of the Mg-Er master alloy and pure magnesium, and weigh the ingredients. The mass percentage of Er in the prefabricated alloy is 0.5wt.%, and the balance is magnesium. The alloy is smelted in a well-type resistance furnace with a rated power of about 7.5kW and a furnace size of Φ550×600mm, equipped with a protective gas delivery device and a PID temperature control device. The graphite crucible for smelting has an inner diameter of 100mm and a depth of 160mm, and the mass of the molten alloy for a single smelting is about 1.5kg. The casting mold is a low-carbon steel metal mold, and the obtained ingot size is a square billet of 120×33×200 mm. In order to prevent the alloy from being oxidized and burned during the smelting process, gas protection is used throughout the smelting process, where N 2 For conveying gas, SF 6 For protective gas. The alloy smelting process is as follows: after preheating the crucible to remove moisture, first add ...

Embodiment 3

[0035] Now remove the scale layer of the Mg-Er master alloy, pure Zn and pure magnesium, and weigh the ingredients. The mass percent of Zn and Er in the prefabricated alloy is 0.5wt.%, the total amount of alloying elements is 1wt.%, and the balance is magnesium. The alloy is smelted in a well-type resistance furnace with a rated power of about 7.5kW and a furnace size of Φ550×600mm, equipped with a protective gas delivery device and a PID temperature control device. The graphite crucible for smelting has an inner diameter of 100mm and a depth of 160mm, and the mass of the molten alloy for a single smelting is about 1.5kg. The casting mold is a low-carbon steel metal mold, and the obtained ingot size is a square billet of 120×33×200 mm. In order to prevent the alloy from being oxidized and burned during the smelting process, gas protection is used throughout the smelting process, where N 2 For conveying gas, SF 6 For protective gas. The alloy smelting process is as follows:...

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Abstract

The invention provides an indoor-temperature high-formability magnesium alloy plate and a preparation method thereof and belongs to the technical field of alloy plates. The alloy comprises, by mass, less than or equal to 1.0 wt.% of Zn, less than or equal to 1.0 wt.% of Er, and the balance magnesium, wherein the total mass percentage of Zn and Er elements is less than or equal to 1.0 wt.% and greater than 0%. The magnesium alloy plate with the high formability at indoor temperature is prepared through the smelting and rolling method. The tensile strength and yield strength of the alloy at theindoor temperature is 160 MPa-230 MPa and 120 MPa-200 MPa. The indoor-temperature erichsen value (IE) is 2.5 mm-6.0 mm. According to the application characteristics, the alloy is applied to shell stamped thin-walled workpieces of 3C electronic products.

Description

technical field [0001] The invention relates to a Mg-Zn-Er alloy with high formability at room temperature and a preparation method thereof, in particular to preparation through a certain alloy composition, smelting process and rolling conditions; the alloy has good formability at room temperature and is a A high formability magnesium alloy material with potential application prospects belongs to the technical field of alloy plates. Background technique [0002] In recent years, environmental protection has been paid more and more attention worldwide. Improving the efficiency of energy use and reducing the emission of pollutants has become a top priority. Metal magnesium has attracted extensive attention of experts and scholars at home and abroad due to its abundant reserves and light weight. Magnesium alloy has excellent properties such as high specific strength, high specific stiffness, good shock absorption and machinability, and has potential application prospects and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/04C22C23/06C22C1/02C22C1/03C22F1/06B21B1/22B21B3/00
CPCB21B1/22B21B3/00B21B2001/225C22C1/02C22C1/03C22C23/04C22C23/06C22F1/002C22F1/06
Inventor 刘轲梁靖桃杜文博王朝辉李淑波杜宪于子健
Owner BEIJING UNIV OF TECH