Electro-plastic multi-directional forging method and device for spray-formed aluminum alloy

A spray forming and multi-directional forging technology, which is applied in forging/pressing/hammer devices, manufacturing tools, metal processing equipment, etc., can solve the problems of unsuitable spray forming aluminum alloy materials, uneven deformation of TiAl alloy, and anisotropic structure and performance. Problems such as anisotropy, to achieve the effect of metallurgical healing of pores and the bonding state of particle interfaces, easy industrial application, and strengthening the effect of grain refinement
CN109201983AInactive Publication Date: 2019-01-15HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Publication Date
2019-01-15
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses an electro-plastic multi-directional forging method and device for a spray-formed aluminum alloy. The electro-plastic multi-directional forging method comprises the steps thata spray-formed aluminum alloy blank is cut into an aluminum alloy ingot blank which is in a cuboid shape; sleeving processing is performed on the cut aluminum alloy ingot blank, and the whole aluminumalloy ingot blank is tightly wrapped with a steel plate; the sleeved aluminum alloy ingot blank is forged in the Z direction of the height of the cuboid, and an impulse current is applied to the aluminum alloy ingot blank at the same time; the aluminum alloy ingot blank is turned over, and forging is performed on the aluminum alloy ingot blank in the Y direction and is supplemented by the impulsecurrent; the aluminum alloy ingot blank is continuously turned over, and forging is performed on the aluminum alloy ingot blank in the X direction and is supplemented by the impulse current to complete one-pass electro-plastic multi-directional forging; the step (3) is repeated to complete multiple-pass electro-plastic multi-directional forging; and a spray-formed aluminum alloy blank is obtainedafter a sleeve is removed. The electro-plastic multi-directional forging method and device for the spray-formed aluminum alloy are suitable for densification of the spray-formed aluminum alloy ingotblank, and the spray-formed aluminum alloy blank with fine grain structures, uniform dispersion distribution of a second phase, a high degree of densification and good mechanical properties can be obtained.
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Description

technical field

[0001] The invention relates to an aluminum alloy cold working forming technology, in particular to a spray forming aluminum alloy electroplastic multidirectional forging method and device. Background technique

[0002] Spray forming technology has greatly improved the cooling and solidification speed of the material during the billet making process. Compared with traditional casting and forming materials, it can have higher alloy composition, finer grains and lower segregation tendency. Spray forming aluminum With its excellent comprehensive mechanical properties such as high strength, corrosion resistance, and good toughness, alloys have been increasingly widely used in my country's aerospace and military industries.

[0003] However, the aluminum alloy billet prepared by spray forming technology has a low structure density due to a certain amount of pores, and the existence of an oxide film makes the particles unable to achieve a good metallurgical bond. Re...

Claims

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