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A method for improving the strong plasticity of magnesium alloy sheet

A magnesium alloy plate, magnesium alloy technology, applied in chemical instruments and methods, metal layered products, layered products, etc., can solve the problem of increasing the cost of high-strength and high-plastic magnesium alloys, difficult to achieve industrial preparation, and high prices of rare earth elements, etc. problems, to achieve excellent strength and plasticity matching, increase processing costs, and improve the effect of plasticity

Active Publication Date: 2022-04-19
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it should be pointed out that due to the high price of rare earth elements, their addition also greatly increases the cost of developing high-strength and high-ductility magnesium alloys, resulting in these materials being limited to the laboratory research stage, and it is difficult to achieve large-scale industrial preparation.

Method used

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  • A method for improving the strong plasticity of magnesium alloy sheet
  • A method for improving the strong plasticity of magnesium alloy sheet

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Embodiment 1

[0027] Embodiment one, a kind of method for improving the strong plasticity of magnesium alloy plate, it comprises the following steps:

[0028] S1, the extruded AZ91 magnesium alloy plate with a thickness of 3mm in the initial state was subjected to solution treatment, the solution temperature was 410°C, and the solution time was 12h to obtain a solid solution magnesium alloy plate, denoted as SS. Part of the magnesium alloy plate in solid solution state was taken for aging treatment, the aging temperature was 180°C, and the aging time was 5h, to obtain an aged magnesium alloy plate, which was recorded as A5.

[0029] S2. Cut the solid solution magnesium alloy plate and the aging state magnesium alloy plate into small plates with a size of 35mm×15mm×1.5mm, two solid solution magnesium alloy plates and three aging state magnesium alloy plates, respectively surface Grinding and degreasing treatment. see figure 1 with figure 2 The solid solution magnesium alloy plate 1 and t...

Embodiment 2

[0031] Embodiment 2, a method for improving the strong plasticity of magnesium alloy sheet material, the magnesium alloy sheet material used, the solution treatment process and the extrusion compounding process are all the same as the embodiment 1, except that the aging treatment process parameters are different, and the aging temperature is 180 ° C , the aging time is 10h, the yield strength of the finished product at room temperature is 185Mpa, the tensile strength is 386Mpa, and the elongation at break is 19.6%.

Embodiment 3

[0032] Embodiment 3, a method for improving the strong plasticity of magnesium alloy sheet material, the magnesium alloy sheet material used, the solution treatment process and the extrusion compounding process are all the same as the embodiment 1, except that the aging treatment process parameters are different, and the aging temperature is 180 ° C , the aging time is 20h, the yield strength of the finished product at room temperature is 173Mpa, the tensile strength is 379Mpa, and the elongation at break is 19.5%.

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Abstract

The invention discloses a method for improving the strong plasticity of a magnesium alloy plate, which comprises the following steps: S1, performing solution treatment on the magnesium alloy plate to obtain a solid solution state magnesium alloy plate; performing solution aging treatment on the magnesium alloy plate to obtain Aging state magnesium alloy plate; S2, the solid solution state magnesium alloy plate and aging state magnesium alloy plate are alternately stacked to form a laminated plate with a multi-layer structure, and the outermost layer of the laminated plate is an aging state magnesium alloy plate, S3, the laminated plate is treated Extrusion compounding or rolling compounding to obtain finished products. It can simultaneously take into account the strength and plasticity of the magnesium alloy material, has a simple process flow, and is suitable for large-scale industrial applications.

Description

technical field [0001] The invention relates to the field of processing magnesium alloy materials, in particular to a method for improving the strong plasticity of magnesium alloy plates. Background technique [0002] Magnesium alloy has the advantages of low density, high specific strength, easy recycling, good vibration damping, etc., and has broad application prospects in aerospace, automobile, digital 3C and other fields. However, commonly used magnesium alloys have a close-packed hexagonal crystal structure. Compared with metals with face-centered cubic structures such as aluminum and copper, there are fewer slip systems that can be activated at room temperature, resulting in poor room temperature plasticity, especially the uniform elongation of high-strength magnesium alloys. The tensile strength of ultra-low and ultra-high-strength magnesium alloys can reach more than 500MPa, while the elongation is usually only about 5%. This imbalance of strength and plasticity sev...

Claims

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Application Information

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IPC IPC(8): B32B37/10B32B15/01C22F1/06
CPCB32B37/10B32B15/01C22F1/06
Inventor 黄光胜陈祥黄宇刘帅帅刘珂蒋斌潘复生
Owner CHONGQING UNIV
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