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Extrusion processing method of high-performance magnesium alloy sheet material

A technology for extrusion processing and magnesium alloys, applied in metal extrusion dies and other directions, can solve the problems of limiting the use range of magnesium alloys, reducing the mechanical properties of alloys, and reducing plasticity and toughness, achieving good large-scale application prospects and improving mechanical properties. , weakening the effect of basal texture

Inactive Publication Date: 2015-08-05
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, castings prepared by casting doped ceramic particles will have casting defects such as pores and shrinkage porosity; uneven distribution of ceramic particles will cause agglomeration, which will significantly reduce the mechanical properties of the alloy; the wear resistance of the particle-reinforced magnesium alloy However, its plasticity and toughness will be greatly reduced
The technical defects and disadvantages of these methods limit the scope of application of magnesium alloys to a large extent.

Method used

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  • Extrusion processing method of high-performance magnesium alloy sheet material
  • Extrusion processing method of high-performance magnesium alloy sheet material
  • Extrusion processing method of high-performance magnesium alloy sheet material

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Embodiment Construction

[0046] A method for extrusion processing of a high-performance magnesium alloy plate, using the following steps:

[0047] (1) Selected materials and chemical reagents

[0048] Select the materials and chemical reagents required for preparation, and control their purity and concentration:

[0049] Magnesium alloy block blank: solid block, containing 96% magnesium, 3.0% aluminum, and 1.0% zinc;

[0050] Sandpaper: solid solid;

[0051] High temperature graphite: solid powder;

[0052] Absolute ethanol: liquid liquid, 99.7%;

[0053] Acetone: liquid liquid, 99.0%;

[0054] (2) Pretreatment of magnesium alloy block blanks

[0055] ① Grinding the outer surface of the magnesium alloy block blank 21 with 1200-mesh sandpaper to remove oil stains, and then polishing with 2400-mesh sandpaper to make the surface clean and smooth;

[0056] ②Acetone and absolute ethanol are added into the cleaning tank according to the volume ratio of 3:2, stirred and mixed, and configured as acetone...

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Abstract

The invention relates to enhancing of performances and improvement of a processing method of a magnesium alloy sheet material and particularly relates to an extrusion processing method of the high-performance magnesium alloy sheet material and belongs to the field of the technical fields of plastic processing and mechanical performance enhancing of nonferrous metals. In the invention, by means of the novel extrusion processing method, the magnesium alloy material is subjected to distribution, two cross-section-varying angular extrusion deformations and differential shear deformation during the extrusion process, wherein crystal grain tissue is continuously fined and the c axis of the crystal grains is continuously turned so that the basal texture is continuously weakened, thereby refining the crystal grain tissue, weakening the basal texture and enhancing the mechanical performances. By means of the method, two high-performance magnesium alloy sheet materials can be produced just by one extrusion operation. The processing method is simple, is low in cost, is high in efficiency and is easy to carry out, is excellent in large-scale application prospect and is a very excellent processing method for producing the magnesium alloy sheet material.

Description

technical field [0001] The invention relates to performance enhancement of magnesium alloy plates and improvement of processing methods, in particular to an extrusion processing method of high-performance magnesium alloy plates, belonging to the technical field of plastic processing of non-ferrous metals and increasing mechanical properties. Background technique [0002] The density of magnesium is 1.74g / cm 3 , The density of magnesium alloy is about 2 / 3 of that of aluminum alloy and 1 / 4 of that of steel. Among the practical metal materials, the density of magnesium alloy is the lightest metal structural material currently used. Magnesium alloy has the advantages of high specific strength and specific rigidity, good electromagnetic shielding performance, easy machining, good electrical and thermal conductivity, and easy recycling, making it widely used in the fields of aerospace, weaponry, transportation, and electronic products. grow rapidly. However, the characteristics ...

Claims

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Application Information

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IPC IPC(8): B21C37/02B21C23/02B21C25/02
CPCB21C23/02B21C25/02B21C25/025B21C37/02
Inventor 张华樊建锋程伟丽曾勋许并社董洪标
Owner TAIYUAN UNIV OF TECH
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