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Method for preparing block of nano aluminum alloy in ultrahigh strength

An ultra-high-strength, aluminum alloy technology, which is applied in the field of aluminum alloy and nano-material preparation, can solve the problems of being unable to import, and achieve the effects of simple equipment, easy mass production scale, and low comprehensive preparation cost

Inactive Publication Date: 2005-03-30
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also quite a few high-strength aluminum alloys that cannot be imported due to political reasons

Method used

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  • Method for preparing block of nano aluminum alloy in ultrahigh strength
  • Method for preparing block of nano aluminum alloy in ultrahigh strength
  • Method for preparing block of nano aluminum alloy in ultrahigh strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The alloy composition is 9.9% by weight Zn, 2.9% by weight Mg, 1.9% by weight Cu, 0.1% by weight Zr, 0.1% by weight Ni, and the rest is Al. Use an induction furnace to melt the alloy material and heat it to 810°C for 10 minutes to homogenize it. Use conventional hexachloroethane and sodium fluorosilicate to refine and degas, and then cast into a pre-alloyed ingot. Put the above-mentioned pre-alloyed ingot into a non-vacuum atomization device. Use an intermediate frequency induction furnace to heat and raise the temperature to 800°C, and use conventional hexachloroethane and sodium fluorosilicate to refine and degas to prepare aluminum alloy powder. The atomizing gas is nitrogen, the atomizing pressure is 0.4MPa, and the diameter of the draft tube is 3.1mm.

[0031] A vertical rotor ball mill and stainless steel balls and tanks are selected, the ball-to-material ratio is 40:1, the ball milling temperature is -120°C, and after 2 hours and 15 minutes of ball milling, Al alloy ...

Embodiment 2

[0033]The alloy composition is 10.2% by weight Zn, 3.1% by weight Mg, 1.9% by weight Cu, 0.1% by weight Zr, 0.1% by weight Ni, and the rest is Al. Use an induction furnace to melt the alloy material and heat it to 830°C for 10 minutes to homogenize it. Use conventional hexachloroethane and sodium fluorosilicate to refine and degas, and then cast into a pre-alloyed ingot. Put the above-mentioned pre-alloyed ingot into a non-vacuum atomization device. Use an intermediate frequency induction furnace to heat and raise the temperature to 820°C, and use conventional hexachloroethane and sodium fluorosilicate to refine and degas to prepare aluminum alloy powder. The atomizing gas is nitrogen, the atomizing pressure is 0.5MPa, and the diameter of the draft tube is 3.2mm.

[0034] A vertical rotor ball mill and stainless steel balls and tanks were selected, the ball-to-material ratio was 35:1, the ball milling temperature was -140°C, and after 7 hours of ball milling, Al alloy powder with ...

Embodiment 3

[0036] The alloy composition is 10.6 wt% Zn, 2.8 wt% Mg, 2.0 wt% Cu, 0.2 wt% Zr, 0.2 wt% Ni, and the rest is Al. Use an induction furnace to melt the alloy material and heat it to 840°C for 10 minutes to homogenize it. Use conventional hexachloroethane and sodium fluorosilicate to refine and degas, and then cast into a pre-alloyed ingot. Put the above-mentioned pre-alloyed ingot into a non-vacuum atomization device. Use an intermediate frequency induction furnace to heat and raise the temperature to 840°C, and use conventional hexachloroethane and sodium fluorosilicate to refine and degas to prepare aluminum alloy powder. The atomizing gas is argon, the atomizing pressure is 0.6 MPa, and the diameter of the draft tube is 3.3 mm.

[0037] A high-energy horizontal rotor ball mill and stainless steel balls and tanks are selected, the ball-to-material ratio is 50:1, the ball milling temperature is -150°C, and after 11 hours of ball milling, an Al alloy powder with an average grain siz...

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Abstract

A process or preparing high-strength nano-Al alloy block includes providing the Al-Zn-Mg-Cu-Zr-Ni alloy, prefabricating alloy ingot by induction furnace, aerosolizing to obtain alloy powder, low-temp ball grinding in liquefied nitrogen, and high-pressure treating at medium or low temp.

Description

Technical field [0001] The invention belongs to the technical field of preparation of aluminum alloys and nano materials, and particularly provides a method for preparing ultra-high-strength bulk nano aluminum alloys. The material can be applied to key structural parts in the fields of aviation, aerospace, military industry, electromechanical, automobile and micro machinery. Background technique [0002] The research and application of bulk nanostructured materials is an important direction for the development of nanomaterials, and plays a pivotal role in the further development and application of the entire nanomaterial science and technology. Although laboratory research has proved that the performance of nanostructured materials is far superior to traditional coarse-grained materials (Zhang Lide, Mou Jimei, Nanomaterials and Nanostructures, Science Press, Beijing, 2001, p260), the laboratory research results have been applied to engineering The conversion process is obviously ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/01B22F9/04C22C1/02C22C21/10
Inventor 杨滨樊建中张济山程军胜田晓风熊柏青崔华张永安
Owner UNIV OF SCI & TECH BEIJING
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