Unlock instant, AI-driven research and patent intelligence for your innovation.

Binary wrought magnesium alloy and preparation method thereof

A technology for deforming magnesium alloys and magnesium alloys, which is applied in the field of magnesium alloy materials, can solve the problems that the plasticity and strength cannot be improved at the same time, the plastic deformation ability of magnesium alloys is poor, and the scope of application is limited, and the strength and toughness are improved, the strength is improved, and the process is simple. Effect

Active Publication Date: 2022-03-25
CHONGQING UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used magnesium alloy has poor plastic deformation ability and low absolute strength, which greatly limits its application range in structural parts.
[0003]Alloying and severe plastic deformation are the two most commonly used methods in the field of magnesium alloy materials to improve the mechanical properties of magnesium alloys at room temperature, which can make magnesium alloys The mechanical properties are improved, but there are limitations
Alloying mainly improves the performance of magnesium alloys through fine grain strengthening and second phase strengthening, but plasticity and strength cannot be improved at the same time
Severe plastic deformation methods such as equal channel extrusion can greatly refine the grain size of magnesium alloys, but due to the poor plastic deformation ability of magnesium alloys, severe plastic deformation methods have high requirements for molds, complex deformation processes, and easily lead to material cracking, etc. question

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Binary wrought magnesium alloy and preparation method thereof
  • Binary wrought magnesium alloy and preparation method thereof
  • Binary wrought magnesium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, a kind of preparation method of binary deformation magnesium alloy, it comprises the following steps:

[0027] S1, raw material preparation, the components of the binary deformed magnesium alloy include 1% samarium and 99% magnesium by weight percentage, using pure magnesium ingots and magnesium samarium master alloys as raw materials, the ingredients are calculated according to the weight percentage of the components, and mechanically polished Remove the oxide layer on the surface of the raw material.

[0028] S2, preheat the pure magnesium ingot and the magnesium-samarium master alloy at 300°C for 30 minutes, then heat the pure magnesium ingot at 720-750°C with SF 6 and CO 2 Under the protection of the mixed gas, it is completely melted to obtain a magnesium melt, and after the temperature of the magnesium melt is raised to 720°C and stabilized, the preheated magnesium samarium master alloy is added to the completely melted magnesium melt, Fully stir f...

Embodiment 2

[0031] Embodiment 2, a method for preparing a binary deformed magnesium alloy. The components of the binary deformed magnesium alloy include 2% samarium and 98% magnesium by weight percentage, and the rest are the same as the first embodiment.

Embodiment 3

[0032] Embodiment 3, a method for preparing a binary deformed magnesium alloy. The components of the binary deformed magnesium alloy include 3% samarium and 97% magnesium by weight percentage, and the rest are the same as the first embodiment.

[0033] Carry out X-ray diffraction analysis to the product that embodiment 1 to embodiment 3 make respectively, the result sees figure 1 , the binary magnesium alloy undergoes appropriate solid solution treatment so that the samarium element is completely dissolved in the magnesium matrix, and the obtained product is in a single-phase state.

[0034] In order to illustrate the advantages of the present invention by comparison, the product obtained by hot extrusion of pure Mg at a temperature of 350°C is used as Comparative Example 1, and the product obtained by hot extrusion of Mg-1Sm at a temperature of 380°C is used as a comparison example. Comparative Example 2, the product obtained by hot extrusion of Mg-2Sm at a temperature of 380...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The preparation method comprises the following steps that S1, raw materials are prepared, specifically, the binary wrought magnesium alloy comprises, by weight, 1-5% of samarium and 95-99% of magnesium, a pure magnesium ingot and a magnesium-samarium intermediate alloy serve as raw materials, and ingredients are calculated according to the weight percentage of the components; s2, melting the pure magnesium ingot to obtain a magnesium melt, adding the magnesium samarium intermediate alloy into the magnesium melt, melting the magnesium samarium intermediate alloy to obtain a magnesium alloy melt, and cooling to obtain a magnesium alloy cast ingot; s3, the magnesium alloy cast ingot is subjected to solution treatment for 12-36 h under the condition that the temperature ranges from 400 DEG C to 570 DEG C, and the magnesium alloy cast ingot is water-cooled to the room temperature; and S4, the magnesium alloy cast ingot is subjected to hot extrusion at the temperature of 250-350 DEG C, a magnesium alloy bar is obtained, and the binary wrought magnesium alloy with the ductility larger than or equal to 25% is obtained. The alloy has high strength and room-temperature tensile plasticity, and the preparation process is simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of magnesium alloy materials, in particular to a binary deformed magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium and magnesium alloys are currently the lightest metal structural materials, with low density, high specific strength and specific stiffness, good damping and shock absorption, good thermal conductivity, good electromagnetic shielding effect, excellent machining performance, stable parts size and easy recycling, etc. Advantages, it has many years of history in industries such as aviation, aerospace, automobiles, computers, electronics, communications and home appliances. In recent years, the continuous improvement of lightweight and environmental protection requirements for automobiles and the increasingly tight energy have stimulated people's interest in magnesium. Therefore, a large number of new wrought magnesium alloys have become research hotspots. I...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C1/03C22C23/06C22F1/06B21C23/00
CPCC22C1/03C22C23/06C22F1/06B21C23/002
Inventor 潘复生周世博刘婷婷汤爱涛盛光敏
Owner CHONGQING UNIV