Electric pulse regression treatment method for aluminum alloy

Abstract

The invention discloses an electric pulse regression treatment method for an aluminum alloy. The electric pulse regression treatment of a natural aging aluminum alloy material is finished by virtue of an electronic universal testing machine with an insulating chuck due to the match of a pulsed power supply, and the mechanical properties of the treated aluminum alloy material are measured; and by utilizing an electric pulse effect, the time consumption is low, the material temperature rise is slow, the regression treatment effect is controlled by changing the electric pulse parameters, and the material has high process flexibility. The method comprises the following steps: performing solution treatment on the cut single tensile test piece by virtue of heat preservation, quenching in water after discharging, and performing natural aging at room temperature, thereby obtaining an aluminum alloy uniaxial tensile test piece; introducing pulse current into the tensile test piece, setting the electric pulse duration time according to the power supply output capacity and the temperature resistance of the test piece, and monitoring and recording the temperature change conditions by adopting a thermal infrared imager when the electric pulse flows through the tensile test piece. The characteristic of slow material temperature rise completely accords with the aluminum alloy regression treatment standard, and the method has high actual application value.

Description

technical field [0001] The invention belongs to the technical field of heat treatment of aluminum alloy materials, and in particular relates to an electric pulse regression treatment method of aluminum alloys. Background technique [0002] Aluminum is the most widely distributed metal element in the earth's mineral deposits. Compared with common metal materials such as iron and copper, aluminum metal materials have low density, strong plastic deformation ability, good thermal conductivity and electrical conductivity, non-magnetic, non-toxic, acid corrosion resistance, excellent comprehensive mechanical properties, good castability and weldability, Moreover, it is convenient for cutting and forming, and has very good comprehensive performance. Aluminum and aluminum alloy materials have been widely used in aerospace, aviation, shipbuilding, construction, electronics, and machinery manufacturing. Due to the sensitivity of aircraft to weight, aluminum alloy has become the most...

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Problems solved by technology

[0005] In order to avoid the deficiencies of the existing technology and overcome the problems of relatively high material temperature rise and long heating and holding time during aluminum alloy regressive treatment, the present invention proposes an electric pulse regressive treatment method for aluminum alloy; Regression treatment of natural aging aluminum alloy materials, using the electric pulse effect, not only takes a short time, the temperature rise of the material is low, but also it is easy to control the regression treatment effect by changing the parameters of the electric pulse, and has good process flexibility

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