Impact-resistant high-strength heat-resistant magnesium rare earth alloy material

A magnesium rare earth alloy and impact resistance technology, applied in the field of high-strength heat-resistant magnesium rare earth alloy materials and their preparation, can solve the problems of unsatisfactory heat resistance and insufficient strength of magnesium alloys, and achieve obvious fine-grain strengthening effect, equipment and temperature. The requirements are not harsh, and the effect of improving the casting structure

Active Publication Date: 2021-10-22
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, magnesium alloys generally have defects such as insufficient strength and unsatisfactory heat resistance, which limit their applications.

Method used

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  • Impact-resistant high-strength heat-resistant magnesium rare earth alloy material
  • Impact-resistant high-strength heat-resistant magnesium rare earth alloy material
  • Impact-resistant high-strength heat-resistant magnesium rare earth alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Alloy composition

[0025] The alloy composition (mass fraction) is: Gd 4%, Y 3.5%, Zr 0.81%; impurity elements Al≤0.02%, Cu≤0.02%, Fe≤0.02%, Ni≤0.02%, Si≤0.02%, and the rest are Mg .

[0026] (2) alloy casting

[0027] After the batching is completed, the weighed raw materials are placed in an oven for drying and the temperature of the oven is 150°C; when the alloy is smelted, pure magnesium and intermediate alloys Mg-Gd and Mg-Y are added to the crucible to heat up and melt. After the magnesium and the master alloy are completely melted, raise the temperature to 780°C, add the Mg-Zr master alloy, and after the Mg-Zr master alloy is completely melted, refine for 10 minutes, then stand still after removing the slag, then cool down to 750°C, and put the alloy The liquid is poured into a steel mold preheated to 300°C, and an inert gas argon is used for protection during melting and casting to obtain a round rod ingot. After pouring is completed, the mold is cooled ...

Embodiment 2

[0037] (1) Alloy composition

[0038] The alloy composition (mass fraction) is: Gd 4.2%, Y4%, Zr 0.86%; impurity elements Al≤0.02%, Cu≤0.02%, Fe≤0.02%, Ni≤0.02%, Si≤0.02%, and the rest is Mg.

[0039] (2) alloy casting

[0040] After the batching is completed, the weighed raw materials are placed in an oven for drying and the temperature of the oven is 150°C; when the alloy is smelted, pure magnesium and intermediate alloys Mg-Gd and Mg-Y are added to the crucible to heat up and melt. After the magnesium and the master alloy are completely melted, raise the temperature to 780°C, add the Mg-Zr master alloy, and after the Mg-Zr master alloy is completely melted, refine for 10 minutes, then stand still after removing the slag, then cool down to 750°C, and put the alloy The liquid is poured into a steel mold preheated to 300 ° C, and an inert gas is used for protection during melting and casting to obtain a round rod ingot. After pouring is completed, the mold is cooled with a w...

Embodiment 3

[0050] (1) Alloy composition

[0051] The alloy composition (mass fraction) is: Gd 4.4%, Y 4.5%, Zr 0.9%; impurity elements Al≤0.02%, Cu≤0.02%, Fe≤0.02%, Ni≤0.02%, Si≤0.02%, and the rest are Mg .

[0052] (2) alloy casting

[0053] After the batching is completed, the weighed raw materials are placed in an oven for drying and the temperature of the oven is 150°C; when the alloy is smelted, pure magnesium and intermediate alloys Mg-Gd and Mg-Y are added to the crucible to heat up and melt. After the magnesium and the master alloy are completely melted, raise the temperature to 780°C, add the Mg-Zr master alloy, and after the Mg-Zr master alloy is completely melted, refine for 10 minutes, then stand still after removing the slag, then cool down to 750°C, and put the alloy The liquid is poured into a steel mold preheated to 300°C, and an inert gas argon is used for protection during melting and casting to obtain a round rod ingot.

[0054] (3) Solution treatment

[0055] Plac...

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Abstract

The invention discloses an impact-resistant high-strength heat-resistant magnesium rare earth alloy material. The material is characterized by comprising the following components in percentage by mass: 4-4.9% of Gd, 3.5-6.1% of Y and 0.81-1% of Zr, wherein the total content of rare earth elements of Gd and Y is less than or equal to 11%, the total content of impurity elements of Al, Cu, Fe and Si is less than or equal to 0.1%, and the balance is pure Mg. The impact-resistant high-strength heat-resistant rare earth magnesium alloy material provided by the invention has the advantages of high heat resistance and good impact resistance.

Description

technical field [0001] The invention relates to non-ferrous metal materials and processing, in particular to an impact-resistant high-strength heat-resistant magnesium rare-earth alloy material and a preparation method thereof. Background technique [0002] After entering the 21st century, with the rapid development of science and technology, various emerging technologies have been widely used in conventional weapon systems, which has significantly improved the military strike capability and protection system performance, but the metal protection layer of tanks and armored vehicles is getting thicker and thicker. , the cost and weight are getting more and more serious, and the maneuverability and quick response ability have also been seriously affected. Therefore, magnesium alloy is the lightest metal structural material in engineering applications, and has the advantages of low density, high specific strength, high specific stiffness, and good damping performance. It has br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C1/03C22F1/06C21D1/18B21C23/00
CPCC22C23/06C22C1/03C22F1/002C22F1/06B21C23/002
Inventor 王雪兆王优强唐昌平倪陈兵房玉鑫于晓
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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