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High-precision magnesium alloy sheet and preparation method thereof

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

Active Publication Date: 2013-01-23
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 high-precision magnesium alloy sheet which is prepared from the following raw materials: 0.2% of yttrium, 0.06% of titanium, 0.05% of cerium, 0.05% of lanthanum, 0.02% of samarium, 0.5% of zinc, 2% of manganese and the balance of magnesium. The invention also discloses a preparation method of the magnesium alloy sheet. The magnesium alloy sheet disclosed by the invention has the advantages of favorable corrosion resistance and greatly higher physicochemical parameters (fracture strength, elongation percentage and the like), has high market application value, and can be used in the fields of automobile transmission cases, motor casings and the like.

Description

[0001] technical field [0002] The invention relates to a high-precision magnesium alloy plate and a preparation method thereof, 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...

Claims

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Application Information

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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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