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A kind of high plasticity, low anisotropic deformation magnesium alloy plate and its preparation method

A wrought magnesium alloy, anisotropic technology, applied in the field of light metal materials, can solve the problems of reducing the oxidation resistance of the alloy at room temperature, the alloy cannot meet the basic requirements, and cannot be used in a higher temperature environment, and achieves obvious and excellent fine-grain strengthening effect. Comprehensive mechanical properties, the effect of inhibiting the growth of grains

Active Publication Date: 2020-08-28
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the alloy has low plasticity (≤23%) at room temperature, resulting in poor secondary processing performance. In addition, the addition of Li element accelerates the corrosion rate of the alloy and greatly reduces the room temperature oxidation resistance of the alloy. Therefore, The alloy prepared by this technical scheme cannot meet the basic requirements of most engineering components for magnesium alloy materials, let alone be applied in higher temperature environments

Method used

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  • A kind of high plasticity, low anisotropic deformation magnesium alloy plate and its preparation method
  • A kind of high plasticity, low anisotropic deformation magnesium alloy plate and its preparation method
  • A kind of high plasticity, low anisotropic deformation magnesium alloy plate and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Get each raw material by following mass ratio:

[0040] 3.0% Al, 0.3% Mn, 0.1% Y, 0.1% Ca, 0.1% Zn, the rest is Mg and unavoidable impurities, the total impurity content is ≤0.3%.

[0041] 1. Melting:

[0042] ①Put the crucible in a resistance furnace, heat up to 400°C, pass in protective gas for 10 minutes, and then add pure magnesium; heat the resistance furnace to 720°C, keep it warm for 40 minutes, and after the pure magnesium is completely melted, add preheated to 200°C Pure aluminum, keep warm for 20 minutes, after the pure aluminum is completely melted, stir and remove slag;

[0043] ②Raise the temperature of the resistance furnace to 740°C, add Mg-Mn, Mg-Ca and Mg-Y master alloys preheated at 200°C, keep it warm for 10 minutes, and stir and remove slag after the master alloy is completely melted;

[0044] ③Reduce the temperature of the resistance furnace to 720°C, add pure zinc preheated at 200°C, keep it warm for 5 minutes, and stir and remove slag after the ...

Embodiment 2

[0055] Get each raw material by following mass ratio:

[0056] 4.0Al, 0.5% Mn, 0.9% Y, 0.5% Ca, 0.3% Zn, the rest are Mg and unavoidable impurities, the total impurity content is ≤0.3%.

[0057] 1. Melting:

[0058] ① Place the crucible in a resistance furnace, raise the temperature to 450°C, pass in protective gas for 20 minutes, and then add pure magnesium; raise the temperature of the resistance furnace to 740°C, and keep it warm for 20 minutes. Aluminum, keep warm for 10 minutes, after the pure aluminum is completely melted, stir and remove slag;

[0059] ②Raise the temperature of the resistance furnace to 760°C, add Mg-Mn, Mg-Ca and Mg-Y master alloys preheated at 250°C, keep it warm for 10 minutes, and stir and remove slag after the master alloy is completely melted;

[0060] ③Reduce the temperature of the resistance furnace to 720°C, add pure zinc preheated at 250°C, keep it warm for 10 minutes, and stir and remove slag after the pure zinc is completely melted;

[00...

Embodiment 3

[0070] Get each raw material by following mass ratio:

[0071] 5.0% Al, 0.6% Mn, 0.6% Y, 0.8% Ca, 0.5% Zn, the rest is Mg and unavoidable impurities, the total content of impurities is ≤0.3%.

[0072] 1. Melting:

[0073] ①Put the crucible in a resistance furnace, heat up to 500°C, pass through the protective gas for 30 minutes, and then add pure magnesium; heat the resistance furnace to 700°C, keep it warm for 60 minutes, and after the pure magnesium is completely melted, add preheated 300°C Pure aluminum, keep warm for 15 minutes, after the pure aluminum is completely melted, stir and remove slag;

[0074] ②Raise the temperature of the resistance furnace to 750°C, add Mg-Mn, Mg-Ca and Mg-Y master alloys preheated to 300°C, keep it warm for 20 minutes, and stir and remove slag after the master alloy is completely melted;

[0075] ③Reduce the temperature of the resistance furnace to 710°C, add pure zinc preheated at 300°C, keep it warm for 20 minutes, and stir and remove sla...

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Abstract

The invention relates to the technical field of light metal materials, in particular to a high-plasticity and low-anisotropism deformed magnesium alloy plate and a preparation method thereof. The high-plasticity and low-anisotropism deformed magnesium alloy plate is composed of the following components of, by mass, 3.0-5.0% of Al, 0.3-0.6% of Mn, 0.1-0.9% of Y, 0.1-0.8% of Ca, 0.1-0.5% of Zn, andthe balance Mg and unavoidable impurities, wherein the content of the impurities is smaller than or equal to 0.3%. The prepared magnesium alloy plate has the high plasticity and low anisotropism at the room temperature, the basal texture strength is obviously weakened, and the comprehensive mechanical property is good.

Description

technical field [0001] The invention relates to the technical field of light metal materials, in particular to a magnesium alloy plate with high plasticity and low anisotropy deformation and a preparation method thereof. Background technique [0002] Magnesium alloy, as a "green engineering material in the 21st century", is widely favored by the aerospace, automotive and 3C electronics industries for its low density, high specific strength, good shock absorption, and easy recycling. In recent years, with the development of science and technology and the acceleration of industrial transformation and upgrading, the demand for high-performance wrought magnesium alloy sheets in various industries has increased dramatically. Existing commercial wrought magnesium alloy sheets (such as AZ31) tend to produce strong basal texture during the forming process, resulting in poor room temperature plasticity (generally 15% to 20%) and large anisotropy, while alloys The secondary processin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C1/03C22F1/06
CPCC22C1/03C22C23/02C22F1/06
Inventor 董祥雷赵红亮华云筱董亚光翁康荣
Owner ZHENGZHOU UNIV
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