A kind of processing method of strengthening magnesium alloy

Abstract

The invention discloses a processing method of a reinforced magnesium alloy. The processing method comprises the following steps of (1) putting a magnesium alloy blank into a heat treatment furnace for homogenization treatment; (2) removing an oxide layer on the surface of the magnesium alloy blank, cleaning the magnesium alloy blank and carrying out drying treatment; (3) heating the magnesium alloy blank obtained in the step (2) to 300-450 DEG C for 20-40 minutes; (4) hot rolling the magnesium alloy blank; (5) making a pulse power supply to form a closed loop through two conductive wheels contacting a magnesium alloy plate by adjusting a device, adjusting the center distance between two rollers, and controlling the bending deformation angle of the magnesium alloy plate; (6) carrying out pulse current auxiliary multi-time roller bending deformation on the hot-rolled magnesium alloy plate; (7) turning off a rolling mill and the a pulse power supply; and (8) cooling the deformed magnesium alloy plate. By means of the processing method of the reinforced magnesium alloy, the process is simple, the operation is convenient, the grain can be uniformly refined, the texture can be weakened,and the comprehensive mechanical property of the magnesium alloy is improved.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy processing, and in particular relates to a processing method for strengthening magnesium alloys. Background technique [0002] Magnesium alloy has the characteristics of low density, high specific strength and specific stiffness, making it the material of choice for weight reduction, energy saving and environmental protection, and has broad application prospects in electronics, communications, transportation, aerospace and other fields. However, the close-packed hexagonal crystal structure of magnesium alloy can only provide four slip systems, which cannot meet the requirement of five independent slip systems required by the Von-Mises criterion. Therefore, the plastic deformation ability of magnesium alloy is poor. Traditional cast magnesium alloys have gradually failed to meet the requirements, and wrought magnesium alloy products produced by extrusion, forging, rolling and other process...

AI Technical Summary

Problems solved by technology

However, during the rolling and deformation process of magnesium alloys, due to the directional flow and rotation of grains, the preferred orientation will occur, which makes the plate have a strong texture tendency and anisotropy, which limits and restricts the plasticity of magnesium alloys, and at the same time, the rolling deformation A lot of heat will be lost during the process, the temperature of the magnesium alloy sheet will drop, and the plasticity will be poor, which will lead to difficulty in subsequent deformation. When the magnesium alloy sheet is rolled, problems such as cracks and edge cracks may occur. The V-shaped bending and continuous bending process can make the magnesium alloy Uniformly refining grains and weakening texture is an effective method to change the mechanical properties and formability of magnesium alloys

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