Ultrahigh-strength aluminum alloy refiner, and preparation and addition method thereof

A technology of refiner and aluminum alloy, which is applied in the field of materials, can solve problems such as unsatisfactory effects, and achieve the effects of significant refinement and purification effects, increased strength, and simple preparation processes

Inactive Publication Date: 2015-04-29
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: the present invention provides a super-strength aluminum alloy refiner and its preparation and addition method, the purpose of which is to solve the problem of unsatisfactory effects existing in the previous methods

Method used

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  • Ultrahigh-strength aluminum alloy refiner, and preparation and addition method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Put high-purity aluminum into a graphite crucible, then place the graphite crucible in a resistance furnace, heat it to 780°C, melt the pure aluminum ingot, and add Al-RE respectively according to the nominal composition of Al-Zn-Mg-Cu alloy For master alloy and Al-Cu master alloy, add pure Mg ingot and Zn ingot after melting and stir evenly, then add appropriate amount of Be, heat up to 1000°C to prepare liquid refiner.

[0024] When the liquid refiner flows out of the crucible with the conduit, 1.0MPa nitrogen gas is added into the ring to atomize it to make a powder refiner, so that the content of each component meets 2.5wt% Cu, 1.5wt% Mg, 5wt% Zn, 0.4wt%RE, 0.2wt%Be, the balance is the mass percentage of Al. In order to prevent the oxidation of the refiner, the atomization tank is evacuated first, and then filled with nitrogen.

Embodiment 2

[0026] Put high-purity aluminum into a graphite crucible, then place the graphite crucible in a resistance furnace, heat it to 780°C, melt the pure aluminum ingot, and add Al-RE respectively according to the nominal composition of Al-Zn-Mg-Cu alloy For master alloy and Al-Cu master alloy, add pure Mg ingot and Zn ingot after melting and stir evenly, then add appropriate amount of Be, heat up to 950~1000°C to prepare liquid refiner.

[0027] When the liquid refiner flows out of the crucible with the conduit, add 1.0MPa nitrogen in a ring to atomize it to make a powder refiner, so that the content of each component meets 1.0wt% Cu, 3.0wt% Mg, 4.5wt %Zn, 0.5wt%RE, 0.3wt%Be, and the balance is the mass percentage of Al. In order to prevent the oxidation of the refiner, the atomization tank is evacuated first, and then filled with nitrogen.

Embodiment 3

[0029] Put high-purity aluminum into a graphite crucible, then place the graphite crucible in a resistance furnace, heat it to 780°C, melt the pure aluminum ingot, and add Al-RE respectively according to the nominal composition of Al-Zn-Mg-Cu alloy For master alloy and Al-Cu master alloy, add pure Mg ingot and Zn ingot after melting and stir evenly, then add appropriate amount of Be, heat up to 980°C to prepare liquid refiner.

[0030] When the liquid refiner flows out of the crucible with the conduit, add 1.0MPa nitrogen in a ring to atomize it to make a powder refiner, so that the content of each component meets 2.0wt% Cu, 2.0wt% Mg, 6.5wt %Zn, 0.5wt%RE, 0.4wt%Be, and the balance is the mass percentage of Al. In order to prevent the oxidation of the refiner, the atomization tank is evacuated first, and then filled with nitrogen.

[0031] The composition of the Al-Zn-Cu-Mg series super-strength aluminum alloy is similar to that of the refining agent used. After the alloy is ...

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Abstract

The invention provides an ultrahigh-strength aluminum alloy refiner, and a preparation and addition method thereof. Aiming at the exploitability of the existing ultrahigh-strength aluminum alloy, the invention provides a preparation and addition method of an ultrahigh-strength aluminum alloy composed of Al, Cu, Mg, Zn, RE, Be and the like. On the basis of the ultrahard aluminum alloy, a proper amount of refiner can be added to improve the strength and toughness of the alloy, thereby satisfying the demands for the industrial field. The ultrahigh-strength aluminum alloy refiner has the advantages of simple preparation technique, uniform granular size, obvious refinement and cleaning actions, simple addition method and the like. The method is easy for popularization and use, is especially suitable for large-scale commercial production of the ultrahigh-strength aluminum alloy, and has great market potential.

Description

technical field [0001] The invention provides a super-strong aluminum alloy refiner and a preparation and addition method thereof, belonging to the technical field of materials. Background technique [0002] Al-Zn-Mg-Cu series high-strength wrought aluminum alloy is widely used in aerospace, transportation, etc. because of its high strength and hardness, good corrosion resistance and toughness, good processability and weldability. transportation and other fields. Since the United States first developed the practically applicable 7075 aluminum alloy in 1943, material workers from all over the world have changed the content of Zn, Mg and Cu, reduced the content of impurity elements Fe and Si, increased the mass ratio of Zn to Mg, and added some Trace elements (such as rare earth elements Zr and Sc) have successively developed some new 7xxx series aluminum alloys. At present, material workers attach great importance to the research of this type of alloys. However, increasing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/03C22C21/10
Inventor 杨林高菁吴伟王斯妮车欣李锋陈立佳
Owner SHENYANG POLYTECHNIC UNIV
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