Thermal deformation resistant magnesium alloy

A heat-resistant deformation and magnesium alloy technology, which is applied in the field of magnesium alloy production, can solve the problems of poor high-temperature mechanical properties and coarse grains of AZ31 magnesium alloy, so as to reduce micro-shrinkage, improve creep resistance, and increase density Effect

Active Publication Date: 2009-02-04
WUTAI YUNHAI MAGNESIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing AZ31 magnesium alloy has poor high-temperature mechanical properties and coarse grains. A fine-grained heat-resistant deformation magnesium alloy is provided to further meet the requirements for the above-mentioned properties of the magnesium alloy material. production of technical requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 1128kg of magnesium ingots, 30kg of aluminum ingots, and 16.8kg of zinc ingots into the prepared clean crucible and add 18kg of RJ-2 bottom flux to melt them. During the process, sprinkle 3.6kg of RJ-4 covering agents to prevent burning. The entire melting process takes Control at 4h, and the final temperature of magnesium liquid is controlled at 670°C; after melting, blow argon gas into the magnesium liquid, and use mechanical stirring, add RJ-6 refining agent 30kg and manganese chloride 13.75kg at the same time for refining, time control In 45 minutes, the temperature was controlled at 690°C; after the refining, the magnesium alloy liquid was controlled at 700°C, and 18kg of rare earth element cerium and 1.2kg of metal strontium were added, and the time was controlled at 10min, and the temperature was controlled at 700°C; The flux and inclusions are settled, the time is controlled at 30min, and the temperature is controlled at 660°C; finally, pouring is performed a...

Embodiment 2

[0025] Put 1126kg of magnesium ingots, 42kg of aluminum ingots, and 12.0kg of zinc ingots into the prepared clean crucible and add 24kg of RJ-2 bottom flux to melt them. During the process, sprinkle 4.8kg of RJ-5 covering agents to prevent burning. The entire melting process takes Control at 5h, and the final temperature of magnesium liquid is controlled at 680°C; after melting, blow argon gas into the magnesium liquid, and use mechanical stirring, add RJ-5 refining agent 24kg and manganese chloride 9.65kg at the same time for refining, time control In 45 minutes, the temperature was controlled at 705°C; after the refining, the magnesium alloy liquid was controlled at 710°C and 12kg of rare element cerium and 3.6kg of metal strontium were added, the time was controlled at 10min, and the temperature was controlled at 710°C; Let the flux and inclusions settle, the time is controlled at 30min, and the temperature is controlled at 670°C; finally, pouring is performed at a temperatu...

Embodiment 3

[0027] Put 1124.5kg of magnesium ingots, 54kg of aluminum ingots, and 7.2kg of zinc ingots into the prepared clean crucible, add 30kg of RJ-2 bottom flux to melt, and sprinkle 6.0kg of RJ-5 covering agent during the process to prevent burning. The time is controlled at 6 hours, and the final temperature of the magnesium liquid is controlled at 690°C; after the melting is completed, argon gas is blown into the magnesium liquid, and mechanical stirring is used, and at the same time, 18 kg of RJ-4 refining agent and 5.50 kg of manganese chloride are added for refining. Control the temperature at 720°C for 45 minutes; after refining, add 6kg of rare earth element cerium and 6.0kg of metal strontium to the magnesium alloy liquid at 720°C, control the time for 10min, and control the temperature at 720°C; Let the flux and inclusions settle, the time is controlled at 30min, and the temperature is controlled at 680°C; finally, pouring is performed at a temperature of 680°C and in a prot...

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PUM

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Abstract

A kind of heat resistant anamorphosis magnesium alloy which is heat-resistant, he weight percent of the components in it is: Al: 2.5-4.5%; Mn: 0.2-0.5%, Zn: 0.6-1.4%; Ce: 0.5-1.5%, Sr: 0.01-0.5%, Si: <= 0.05%, Fe: <=0.004%, Cu: <=0.01%, Ni: <=0.002%, the other is Mg. Cerium, which is a kind of rare earth component, and Strontium which is a kind of metal will be added in during the actual melting technology of Magnesium alloy, the mechanical capability under high temperate will be improved for the complex function of them, it can sequentially fulfill higher need.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy production, in particular to a heat-resistant deformation magnesium alloy. Background technique [0002] AZ31 alloy is currently the most commonly used commercial wrought magnesium alloy, which is inseparable from its high extrudability and good comprehensive mechanical properties, but AZ31 alloy has significant yield anisotropy and narrow processing range, and its The yield strength is low. As the extrusion speed increases, the temperature generated during the extrusion process also increases, causing the temperature at the exit of the die to rise sharply, which will cause significant grain growth of the extruded product. The strengthening phase in AZ31 alloy is only Mg 17 al 12 , due to its low high-temperature stability, will melt away during extrusion and cannot form sufficient pinning to prevent grain growth. [0003] For the AZ31 alloy, its mechanical properties usually deteriorat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02
Inventor 陶卫建佟龙福王殊
Owner WUTAI YUNHAI MAGNESIUM IND
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