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Preparation method of high-accuracy magnesium alloy plate

A magnesium alloy, high-precision technology, applied in the field of magnesium alloy materials, can solve the problems of application limitation, high thermal crack sensitivity, poor corrosion resistance, etc., and achieve the effect of improving microstructure and improving performance parameters.

Active Publication Date: 2014-01-22
山东银光钰源轻金属精密成型有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to their poor high-temperature strength, creep resistance, and poor corrosion resistance, they cannot be used in automotive power system components that require high high-temperature creep performance, and have been used only for some non-critical auto parts. , such as steering wheels, steering column components, instrument panels, seats, and gearboxes, etc., their application in major power systems such as automotive gearboxes and engine housings has been greatly restricted
[0005] The heat-resistant magnesium alloys Mg-Al-Ca (AX) and Mg-Al-Sr (AJ) alloys currently developed with the addition of alkaline earth elements have the disadvantages of high hot cracking sensitivity and poor alloy plasticity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-precision magnesium alloy plate, which is prepared according to the following method:

[0023] 1) Raw material composition: (percentage by weight): 0.2% yttrium, 0.06% titanium, 0.05% cerium, 0.05% lanthanum, 0.02% samarium, 0.5% zinc, 2% manganese, and the rest is magnesium;

[0024] 2) Raw material processing: Take magnesium metal according to the above weight ratio, and under the protection of argon gas, melt the magnesium metal and heat it up to 750°C to obtain Mg melt; take other metal raw materials according to the above weight ratio, and put them in a high-energy ball mill tank After mixing and ball milling for 3 hours, the mixed powder of metal raw materials was obtained;

[0025] 3) Melting: Start the resistance melting furnace, put the mixed powder obtained in step 2) into a crucible preheated to 350°C, and pass it into SF when the temperature rises to 700°C 6 and N 2 Mixed protective gas, the volume ratio of the mixed gas is SF 6 and N 2 =1:200; Af...

Embodiment 2

[0029] The yttrium metal and titanium metal in the raw materials are removed, and other raw materials and preparation processes remain unchanged.

Embodiment 3

[0031] The cerium metal and lanthanum metal in the raw materials are removed, and other raw materials and preparation processes remain unchanged.

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Abstract

The invention discloses a preparation method of a high-accuracy magnesium alloy plate. The preparation method of the high-accuracy magnesium alloy plate comprises the steps of composition of raw materials, processing of the raw materials, smelting, cooling, machining in a pressurization mode and the like. The magnesium alloy plate prepared through the preparation method is good in corrosion resistance, largely improves physicochemical parameters such as breaking strength and ductility, has good market application value, and can be applied to the fields of automobile gearboxes and engine cases.

Description

[0001] technical field [0002] The invention relates to a method for preparing a high-precision magnesium alloy plate, belonging to the technical field of magnesium alloy materials. [0003] Background technique [0004] Magnesium alloy is an alloy composed of magnesium and other elements. Its characteristics are: low density, high specific strength, large elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloy, resistance to organic matter and Alkali corrosion performance is good. Due to the characteristics of high specific strength, high specific stiffness and damping and shock absorption, magnesium alloy materials have become an important raw material for the automobile manufacturing industry, providing greater development space for meeting the requirements of energy saving and environmental protection in the automobile industry. Mg-Al alloys are the most widely used cast magnesium alloys, among which AZ and AM Mg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/02C22F1/06
Inventor 郭朝贵王守泰刘夫真王前进王飞
Owner 山东银光钰源轻金属精密成型有限公司
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