A high-strength heat-resistant magnesium alloy melting method and melting structure

A magnesium alloy and heat-resistant technology, which is applied in the field of high-strength and heat-resistant magnesium alloy melting methods and melting structures, can solve the problems of easy burning of rare earth elements, oxidation, burning and uneven distribution of rare earth elements in alloys, and avoid the distribution of elements. Non-uniform, ensure uniform distribution and mixing, improve the effect of slag removal

Active Publication Date: 2017-12-29
贵州航天风华精密设备有限公司
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Problems solved by technology

[0003] Traditional magnesium alloys as structural materials still have problems such as low elastic modulus and low high-temperature strength; for this reason, high-strength heat-resistant magnesium alloys have appeared in the prior art, and this material is made by adding rare earth elements. The fine-grain strengthening, dispersion strengthening, and solid solution strengthening of magnesium alloys have greatly improved their high-temperature strength and creep resistance while maintaining the original high specific strength and specific stiffness.
[0004] Although the addition of rare earth elements has improved the quality of magnesium alloys, it has also brought many problems while improving th...

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  • A high-strength heat-resistant magnesium alloy melting method and melting structure

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Embodiment Construction

[0020] The technical solutions of the present invention will be further limited below in conjunction with specific embodiments, but the scope of protection is not limited to the description.

[0021] For high-strength and heat-resistant magnesium alloys, the raw material components are magnesium-rare earth master alloys, which are 9.3-10.5% in terms of rare earths; magnesium-zirconium master alloys, which are 0.5% in terms of zirconium, and the rest are magnesium ingots.

[0022] In certain embodiments, the magnesium-rare earth master alloy is optimal at 10.5% rare earth.

[0023] In certain embodiments, the magnesium-rare earth master alloy is one of Mg-Gd, Mg-Y, Mg-Nd, Mg-Ce, Mg-La, Mg-Pr, Mg-Gd.

[0024] In certain embodiments, the magnesium-rare earth master alloy is a mixture of at least two of Mg-Gd, Mg-Y, Mg-Nd, Mg-Ce, Mg-La, Mg-Pr, Mg-Gd in any ratio.

[0025] In some embodiments, the specific composition of the magnesium-rare earth master alloy is Mg-Gd:Mg-Y:Mg-Nd=5....

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Abstract

The invention relates to the technical field of alloy material manufacturing, in particular to a high-strength heat-resistant magnesium alloy smelting method and a smelting structure. After magnesium ingots are melted, magnesium-rare earth intermediate alloy and magnesium-zirconium intermediate alloy are added separately, and the magnesium-rare earth intermediate alloy is added in batches at 780-800 DEG C, so that flowability of the intermediate alloy is improved; stirring is conducted in the adding process so that alloy smelt in a smelting furnace can achieve combination of convective diffusion, eddy diffusion, atomic diffusion and the like, and it is guaranteed that alloy elements are evenly distributed and mixed; solvents are added so that the solvents can make full contact with the alloy, and the slag removing effect is improved.

Description

technical field [0001] The invention relates to the technical field of alloy material production, in particular to a high-strength and heat-resistant magnesium alloy melting method and a melting structure. Background technique [0002] As the lightest metal structural material, magnesium alloy has high specific strength and specific stiffness, excellent casting performance and machinability, and is known as "green engineering material in the 21st century". It has broad application prospects in aerospace, electronics and automotive fields. [0003] As a structural material, traditional magnesium alloys also have problems such as low elastic modulus and low high temperature strength; for this reason, high-strength and heat-resistant magnesium alloys have appeared in the prior art. The fine grain strengthening, dispersion strengthening, solid solution strengthening and other functions of magnesium alloys make the high temperature strength and creep resistance of magnesium allo...

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Application Information

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IPC IPC(8): C22C1/03C22C1/06C22C23/06
CPCC22C1/03C22C1/06C22C23/06
Inventor 李翔光
Owner 贵州航天风华精密设备有限公司
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