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Method for preparing block of nano aluminum alloy in ultrahigh strength

An ultra-high-strength, aluminum alloy technology, applied in the field of aluminum alloy and nano-material preparation, can solve the problem of inability to import, and achieve the effects of simple equipment, easy process control, and easy mass production scale.

Inactive Publication Date: 2006-07-12
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 l

[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. The alloy material was melted in an induction furnace and heated to 810° C. for 10 minutes to homogenize it. It is degassed by conventional hexachloroethane and sodium fluorosilicate refining, and then cast into pre-alloyed ingots. Put the above pre-alloyed ingot into non-vacuum air atomization equipment. The aluminum alloy powder is produced by heating in an intermediate frequency induction furnace and raising the temperature to 800°C, and refining and degassing with conventional hexachloroethane and sodium fluorosilicate. 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 pots were selected, the ball-to-material ratio was 40:1, the ball milling temperature was -120°C, and Al alloy powder with an average gr...

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. The alloy material was melted in an induction furnace and heated to 830° C. for 10 minutes to homogenize it. It is degassed by conventional hexachloroethane and sodium fluorosilicate refining, and then cast into pre-alloyed ingots. Put the above pre-alloyed ingot into non-vacuum air atomization equipment. Use medium frequency induction furnace to heat and raise the temperature to 820°C, use conventional hexachloroethane and sodium fluorosilicate to refine and degas to produce 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 pots were selected, the ball-to-material ratio was 35:1, the ball milling temperature was -140°C, and Al alloy powder with an average grain size of 32nm was forme...

Embodiment 3

[0036] The alloy composition is 10.6% by weight Zn, 2.8% by weight Mg, 2.0% by weight Cu, 0.2% by weight Zr, 0.2% by weight Ni, and the rest is Al. The alloy material was melted in an induction furnace and heated to 840° C. for 10 minutes to homogenize it. It is degassed by conventional hexachloroethane and sodium fluorosilicate refining, and then cast into pre-alloyed ingots. Put the above pre-alloyed ingot into non-vacuum air atomization equipment. The aluminum alloy powder is produced by heating in an intermediate frequency induction furnace and raising the temperature to 840°C, and using conventional hexachloroethane and sodium fluorosilicate for refining and degassing. The atomization gas is argon, the atomization pressure is 0.6MPa, and the diameter of the guide tube is 3.3mm.

[0037] A high-energy horizontal rotor ball mill and stainless steel balls and tanks were selected, the ball-to-material ratio was 50:1, the ball milling temperature was -150°C, and Al alloy pow...

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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 nanometer materials, and in particular provides a method for preparing ultrahigh-strength block nano-aluminum alloys. The material can be used in 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 nanostructure materials is an important direction for the development of nanomaterials, and plays a decisive 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 that of traditional coarse-grained materials (Zhang Lide, Mou Jimei, Nanomaterials and Nanostructures, Science Press, Beijing, 2001, p260), but the laboratory research results have no application to engineering applications. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/02B22F3/00C22C21/10B21C23/01B22F9/04C22C1/02
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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