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

Method for improving the structure and shape of Mg2Si strengthening phase in magnesium alloy

A technology of magnesium alloy and strengthening phase, applied in the field of magnesium alloy material preparation, can solve the problem of high production cost, and achieve the effects of reducing surface energy, improving morphology, improving strength and high-temperature mechanical properties

Inactive Publication Date: 2019-08-23
XI AN JIAOTONG UNIV +1
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the production cost is higher

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
  • Method for improving the structure and shape of Mg2Si strengthening phase in magnesium alloy
  • Method for improving the structure and shape of Mg2Si strengthening phase in magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The Sb content is 0.25% (mass fraction, the same below), and the Ce content is 0.2%, 0.4%, 0.6%, and 0.8%, respectively.

[0037] Step 1: Industrial pure Mg, Al-20% Si master alloy, Al-10Ce master alloy, industrial pure Zn, industrial pure Sb are dried in a vacuum drying oven, the drying time is 1 hour, and the drying temperature is 200°C .

[0038] Step 2: Brush the crucible, skimming spoon, stirring rod, etc. with uniform paint, turn on the heating furnace, set the temperature to 730°C, and put the crucible into the heating furnace. Turn on the preheating furnace and start preheating the mold at a temperature of 350°C.

[0039] Step 3: After the crucible is completely dry, sprinkle the refining agent on the bottom, add magnesium block, sprinkle a little refining agent on the surface, and pass through the argon gas for protection.

[0040] Step 4: After 40 minutes, the magnesium block is completely melted. Raise the temperature of the resistance furnace to 730° C., ...

Embodiment 2

[0043] The Sb content is 0.5% (mass fraction, the same below), and the Ce content is respectively 0.2%, 0.4%, 0.6%, and 0.8%.

[0044] Step 1: Industrial pure Mg, Al-20% Si master alloy, Al-10Ce master alloy, industrial pure Zn, industrial pure Sb are dried in a vacuum drying oven, the drying time is 1.5 hours, and the drying temperature is 180°C .

[0045] Step 2: Brush the crucible, skimming spoon, stirring rod, etc. with uniform paint, turn on the heating furnace, set the temperature to 720°C, and put the crucible into the heating furnace. Turn on the preheating furnace and start preheating the mold at a temperature of 330°C.

[0046] Step 3: After the crucible is completely dry, sprinkle refining agent on the bottom, add magnesium block, sprinkle a little refining agent on the surface, and inject 0.5% SF 6 +CO 2 Protect.

[0047] Step 4: After 45 minutes, the magnesium block is completely melted. At this time, the resistance furnace is heated up, and when the temperat...

Embodiment 3

[0050] The Sb content is 1.0% (mass fraction, the same below), and the Ce content is 0.2%, 0.4%, 0.6%, and 0.8%, respectively.

[0051] Step 1: Industrial pure Mg, Al-20% Si master alloy, Al-10Ce master alloy, industrial pure Zn, industrial pure Sb are dried in a vacuum oven, the drying time is 2 hours, and the drying temperature is 150°C .

[0052] Step 2: Brush the crucible, skimming spoon, stirring rod, etc. with uniform paint, turn on the heating furnace, set the temperature to 740°C, and put the crucible into the heating furnace. Turn on the preheating furnace and start preheating the mold at a temperature of 300°C.

[0053] Step 3: After the crucible is completely dry, sprinkle the refining agent on the bottom, add magnesium block, sprinkle a little refining agent on the surface, and pass through the argon gas for protection.

[0054] Step 4: After 45 minutes, the magnesium block is completely melted. Raise the temperature of the resistance furnace to 740° C., and add...

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 invention discloses a method for improving the structure and shape of an Mg2Si strengthening phase in magnesium alloy, and belongs to the technical field of magnesium-based composite materials. Byusing commercially pure Mg, pure Zn and Al-20%Si intermediate alloy for heating ; increasing the temperature, adding Sb particles and Al-10Ce intermediate alloy, and preserving heat for a period of time; carrying out cooling and mechanical stirring for uniform distribution of solute; and after standing for a period of time, carrying out casting into a preheated mold to obtain the magnesium-basedcomposite material with Mg2Si particles being fine in size and uniformly distributed. The Mg2Si reinforced particles with different sizes can be obtained by adjusting and controlling the content of the composite modification elements Sb and Ce. The mechanical property of the prepared magnesium-based composite material is obviously improved, especially the plasticity is obviously improved, the application range of the magnesium alloy is expanded, the refining process is simple, the cost is low, and the method is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy material preparation, and relates to a method for improving Mg in magnesium alloy 2 Si-enhanced phase structure and morphology methods. Background technique [0002] The increasingly serious environmental pollution and energy shortage have made how to save energy, reduce emissions, and develop more effective materials a hot topic. Due to the global energy shortage, automobile lightweight has become a basic trend in the development of the automobile industry worldwide. The use of magnesium alloy in auto parts can reduce the weight of the car body, reduce exhaust emissions and reduce fuel costs. Studies have shown that: the weight of the vehicle is reduced by 10%, the fuel consumption is reduced by 8-10%, and the emission is reduced by 4%. Automobile lightweight can take into account the triple goals of reducing vehicle weight, saving energy and environmental protection. At the same time...

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): C22C1/03C22C1/06C22C23/00
CPCC22C1/03C22C1/06C22C23/00
Inventor 高义民杨莎莎肖鹏李烨飞刘志伟李博刘宪民刘庆坤
Owner XI AN JIAOTONG UNIV