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Preparation method for rolling ultrathin magnesium alloy sheet or foil by using double-side coated aluminum plate

A technology of magnesium alloy and aluminum clad plate, which is applied in the field of metal material manufacturing, can solve the problems of magnesium alloy texture enhancement, foil performance degradation, magnesium alloy cannot produce sufficient recovery and recrystallization, etc., and achieve high ductility and excellent plasticity Effect

Inactive Publication Date: 2014-01-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantage is that after the surface of the magnesium alloy is coated with polyethylene solution, the clad plate can only be rolled at a lower temperature. After each pass, the magnesium alloy cannot produce sufficient recovery and recrystallization, resulting in an enhanced texture of the magnesium alloy. Material performance decline

Method used

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  • Preparation method for rolling ultrathin magnesium alloy sheet or foil by using double-side coated aluminum plate
  • Preparation method for rolling ultrathin magnesium alloy sheet or foil by using double-side coated aluminum plate

Examples

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Embodiment approach

[0021] In the embodiment, the aluminum plate adopts a 2 mm thick pure aluminum plate with a grade of 1100, and the magnesium alloy of the middle layer adopts an AZ31 magnesium alloy. The specific implementation plan is as follows:

[0022] 1) Preparation of cladding layer: the thickness of the outer pure Al plate is 2mm, and it is annealed at 350°C for 1.5h, and the grade of pure aluminum is 1100;

[0023] 2) Preparation of the middle layer: the hot-extruded 3.5mm AZ31 magnesium alloy sheet was rolled at 350°C to about 0.5mm, and annealed at 350°C for 1.5h to serve as the middle layer.

[0024] 3) Cladding and rolling: cladding the plates obtained in the first step and the second step, and connecting them with rivets after punching holes at three points on the plate surface; rolling the cladding plate at 350°C, the first The reduction of each pass is controlled at 15% to 25%, and the reduction of each pass after the first pass is controlled at 10% to 15%.

[0025] 4) Post-ro...

Embodiment 2

[0028] The difference from Example 1 is that the thickness of the pure aluminum used for cladding is 1mm, and the pass reduction control is the same as in Example 1. The magnesium alloy plate after the final multi-pass rolling is processed to obtain a 0.053mm thick The thickness of AZ31 foil is reduced by about 80% compared with ordinary rolling.

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Abstract

The invention provides a preparation method of an ultrathin magnesium alloy sheet or foil with excellent performance, belonging to the technical field of metal material manufacture. According to the better plasticity of pure industrial Al plates, pure Al plates are coated on two faces of a magnesium alloy sheet, and the stress state of the magnesium alloy in an intermediate layer is changed in the coating and rolling processes to ensure that the thickness of the rolled magnesium alloy sheet is up to 0.1mm and below. According to the invention, the foil with the thickness of 0.1mm and below, excellent magnesium alloy mechanical performance and better surface quality is obtained by using an optimized annealing process and a special rolling process, thereby laying a foundation for meeting the requirements of industrial production and electronic product devices.

Description

technical field [0001] The invention belongs to the technical field of metal material manufacturing, and relates to a method for preparing an ultra-thin magnesium alloy sheet or foil with excellent performance used in industrial production and in the field of electronic components, more specifically a special rolling method and a special Heat treatment method. Background technique [0002] Magnesium and its alloys are the lightest metal materials at present, with extremely low density, high specific strength and specific stiffness, good damping and shock absorption performance, good thermal conductivity, good electromagnetic shielding effect, excellent machining performance, and processed The size of the parts is stable, and the waste after use of the products is easy to recycle. Therefore, magnesium and its alloys have high application value and long service life in aviation, aerospace, automobile, computer, electronics, communication and household appliances and other indu...

Claims

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Application Information

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IPC IPC(8): C22F1/06C22F1/04
Inventor 江海涛唐荻米振莉段晓鸽赵爱民武会宾马昭蔡正旭康强
Owner UNIV OF SCI & TECH BEIJING
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