A New Method of Machining High Performance Magnesium Alloy Profiles

A magnesium alloy, high-performance technology, applied in the processing field of high-performance magnesium alloy profiles, can solve the problems of low bar strength, unfavorable secondary plastic processing, etc. Effect

Active Publication Date: 2018-03-20
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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  • A New Method of Machining High Performance Magnesium Alloy Profiles
  • A New Method of Machining High Performance Magnesium Alloy Profiles
  • A New Method of Machining High Performance Magnesium Alloy Profiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 A new method for processing high-performance magnesium alloy profiles, comprising the following steps:

[0020] S1. Select two identical (mass composition and shape are all the same) magnesium alloy ingots A and D, wherein the mass composition of magnesium alloy ingot A is 3.01% Al, 0.80% Zn, 0.40% Mn, 95.79% Mg, magnesium Alloy ingot A is a cylinder with a diameter of 100mm and a length of 100mm, and the magnesium alloy ingot A is cut into semicircular ingots A1 and A2 with a radius of 50mm along the axis (such as figure 1 shown), put semicircular ingots A1, A2 and magnesium alloy ingot D in an industrial resistance furnace, and heat them at 350°C, 200°C and 200°C respectively, and keep them warm for 4h to homogenize deal with;

[0021] S2. Add the magnesium alloy ingot D obtained in step S1 into a 500-ton extruder, and perform plastic processing by rapid hot extrusion process at a temperature of 100°C. The extrusion ratio is 44.4, and the extrusion speed...

Embodiment 2

[0026] Embodiment 2 A new method for processing high-performance magnesium alloy profiles, comprising the following steps:

[0027] S1. Select two magnesium alloy ingots B and D with the same mass composition, wherein the mass composition of magnesium alloy ingot B is 3.01% Al, 0.80% Zn, 0.40% Mn, 95.79% Mg, and the diameter of magnesium alloy ingot B is The magnesium alloy ingot D is a cylinder with a diameter of 100 mm and a length of 100 mm, and a magnesium alloy ingot D 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 tubular shape with an outer diameter of 100 mm, an inner diameter of 90 mm, and a length of 100 mm. Magnesium alloy ingots B, D and aluminum alloy ingot C are placed in an industrial resistance furnace, and respectively heated at 350°C , 300°C, and 300°C for heating and holding for 3 hours for homogenization treatment;

[0028] S2. Add the magnesium alloy ingot D obtained ...

Embodiment 3

[0033] Embodiment 3 A new method for processing high-performance magnesium alloy profiles, comprising the following steps:

[0034] S1. Select two identical (mass composition and shape are all the same) magnesium alloy ingots A and D, wherein the mass composition of magnesium alloy ingot A is 3.01% Al, 0.80% Zn, 0.40% Mn, 95.79% Mg, magnesium The alloy ingot A is a cylinder with a diameter of 100mm and a length of 100mm, and the magnesium alloy ingot A is cut into billets A1, A2 and A3 along the axis direction (such as figure 2 shown), put billets A1, A2 and A3 and magnesium alloy ingot D in an industrial resistance furnace, and heat them at 250°C, 350°C, 250°C, and 250°C respectively, and keep them warm for 3 hours to carry out uniform treatment;

[0035] S2. Add the magnesium alloy ingot D obtained in step S1 into a 500-ton extruder, and perform plastic processing by rapid hot extrusion process at a temperature of 250° C., with an extrusion ratio of 44.4 and an extrusion s...

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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 nonferrous metal processing, in particular to a new method for 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 damping performance, good electromagnetic shielding performance, impact resistance, wear resistance and easy recycling. It can replace steel, aluminum alloy and other materials to meet the lightness of the product. Requirements such as thinness and integration have seen rapid growth in applications in many fields in recent years. At present, die casting is the main processing method for magnesium alloys, but its mechanical properties are poor, the surface quality is poor, and complex magnesium alloy profiles cannot be produced. The deformed magnesium alloy sheet produced by plastic processing such as extrusion and rolling has better mechanica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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