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Novel method for preparation and processing of high-performance magnesium alloy profile

A magnesium alloy, high-performance technology, applied in the field of high-performance magnesium alloy profile preparation and processing, can solve the problems of unfavorable secondary plastic processing, low strength of rods, etc., to improve strength, improve formability, and weaken the texture of the base surface Effect

Active Publication Date: 2017-02-15
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For magnesium alloy profiles (mainly plates and rods) processed by general extrusion plasticity, the plates have a strong basal texture and the strength of the bars is low, which is not conducive to the use of later products and their secondary plastic processing

Method used

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  • Novel method for preparation and processing of high-performance magnesium alloy profile
  • Novel method for preparation and processing of high-performance magnesium alloy profile
  • Novel method for preparation and processing of high-performance magnesium alloy profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 A new method for preparing and processing high-performance magnesium alloy profiles, including the following steps:

[0022] S1. Select two magnesium alloy ingots A and D with the same mass composition and shape. The mass composition of magnesium alloy ingot A is 3.01% Al, 0.80% Zn, 0.40% Mn, 95.79% Mg, and magnesium The alloy ingot A is a cylindrical shape with a diameter of 100mm and a length of 100mm. Cut the magnesium alloy ingot A along the axis into semicircular ingots A1 and A2 with a radius of 50mm (such as figure 1 Shown), put the semi-circular ingots A1, A2 and magnesium alloy ingot D in an industrial resistance furnace, and heat them at 350℃, 200℃ and 200℃ respectively, and keep them for 4h to homogenize deal with;

[0023] S2. Put the magnesium alloy ingot D obtained in step S1 into a 500-ton extruder, and perform plastic processing in a rapid hot extrusion process at a temperature of 100°C, with an extrusion ratio of 44.4 and an extrusion speed of 45mm...

Embodiment 2

[0028] Example 2 A new method for preparing and processing high-performance magnesium alloy profiles, including the following steps:

[0029] S1. Select two magnesium alloy ingots B and D with the same mass composition. The mass composition of the magnesium alloy ingot B is 3.01% Al, 0.80% Zn, 0.40% Mn, 95.79% Mg, and the magnesium alloy ingot B is the diameter It is a cylinder with a diameter of 90mm and a length of 100mm. The magnesium alloy ingot D is a cylinder with a diameter of 100mm and a length of 100mm. At the same time, a piece with a mass composition of 0.42% Si, 0.35% Fe, 0.67% Mg and 98.50% Al is selected. Aluminum alloy ingot C, aluminum alloy ingot C is a tube with an outer diameter of 100mm, an inner diameter of 90mm, and a length of 100mm. Place the magnesium alloy ingots B, D and aluminum alloy ingot C in an industrial resistance furnace at 350℃. , Heating at 300℃, 300℃, and keeping it for 3h for homogenization treatment;

[0030] S2. Put the magnesium alloy ingo...

Embodiment 3

[0035] Example 3 A new method for preparing and processing high-performance magnesium alloy profiles, including the following steps:

[0036] S1. Select two magnesium alloy ingots A and D with the same mass composition and shape. The mass composition of magnesium alloy ingot A is 3.01% Al, 0.80% Zn, 0.40% Mn, 95.79% Mg, and magnesium The alloy ingot A is a cylindrical shape with a diameter of 100mm and a length of 100mm. The magnesium alloy ingot A is cut into blanks A1, A2, and A3 along the axis (such as figure 2 (Shown), the blanks A1, A2, and A3 and the magnesium alloy ingot D are placed in an industrial resistance furnace and heated at 250℃, 350℃, 250℃, and 250℃ respectively, and kept for 3h for uniformity Chemical treatment

[0037] S2. Put the magnesium alloy ingot D obtained in step S1 into a 500-ton extruder, and perform plastic processing in a rapid hot extrusion process at a temperature of 250°C, with an extrusion ratio of 44.4 and an extrusion speed of 55mm / s, to obtain...

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Abstract

Provided is a novel method for preparation and processing of a high-performance magnesium alloy profile. According to the method, magnesium alloy materials of the same type are subjected to plastic processing through the different-temperature hot extrusion technology, or a magnesium alloy material and a dissimilar alloy material are subjected to plastic processing through the identical-temperature / different-temperature hot extrusion technology, the extrusion speeds and the deformation speeds in the direction perpendicular to the axial direction are different due to the different temperatures or material types, then shear strain is generated on a contact interface, a basal texture weakening effect is achieved for magnesium alloy plates formed through hot extrusion, and the forming property is improved; and a grain refinement effect is achieved for magnesium alloy bars formed through hot extrusion, and the strength of the magnesium alloy bars is improved.

Description

Technical field [0001] The invention relates to the field of non-ferrous metal processing, in particular to a new method for preparing and processing high-performance magnesium alloy profiles. Background technique [0002] Magnesium alloy is currently the lightest metal material in industrial applications. It has the advantages of excellent vibration reduction performance, good electromagnetic shielding performance, impact resistance, wear resistance and easy recycling. It can replace steel, aluminum alloy and other materials to meet the light The requirements for thinness and integration have grown rapidly in recent years in many fields. At present, magnesium alloy processing is mainly based on die-casting, but its mechanical properties are poor, the surface quality is poor, and complex magnesium alloy profiles cannot be manufactured. Wrought magnesium alloy sheets produced by plastic processing such as extrusion and rolling have better mechanical properties and diversified str...

Claims

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Application Information

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IPC IPC(8): C22F1/06
CPCC22F1/06
Inventor 杨青山戴庆伟喻祖建柴森森蒋月月宋波
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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