Low-temperature rolling high-toughness wrought magnesium alloy and preparation method thereof

A technology of deformed magnesium alloy and low temperature rolling, applied in the field of metal materials and metal material processing, can solve the problems of low plasticity of alloys, and achieve the effects of improving strength and toughness, low cost and good flame retardant effect

Active Publication Date: 2019-01-18
北京中安璟润新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its tensile strength is 395-412.4MPa, yield strength is 383-402.8MPa, and elongation is about 6%. The inventive alloy has high yield strength, but its plasticity is low, so it is still limited in application

Method used

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  • Low-temperature rolling high-toughness wrought magnesium alloy and preparation method thereof
  • Low-temperature rolling high-toughness wrought magnesium alloy and preparation method thereof
  • Low-temperature rolling high-toughness wrought magnesium alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] (1) Design and select Mg-4.5Bi-2.0Y-0.3Zn-0.05Mn (wt%) alloy composition ratio to form a magnesium alloy. The preparation method includes the following steps: (mass ratio: Bi:Y=2.25:1)

[0042] 1) Ingredients: with pure Mg (99.8wt%) ingots, pure Bi (99wt%) blocks, pure Zn blocks (99wt%) and Mg-30Y and Mg-10Mn master alloys as raw materials, after surface pretreatment (such as decontamination thing, scale etc., the following examples are the same), carry out batching according to the weight percent of above-mentioned magnesium alloy as target composition;

[0043] 2) Casting: set the furnace temperature to 720°C, heat slowly, and the heating rate is 25°C / min. Clean the crucible and put it into the furnace. When the temperature of the belt furnace rises to 720°C, put the magnesium ingot preheated to 200°C into the crucible of the melting furnace. Blocks, pure Zn blocks, and Mg-30Y and Mg-10Mn master alloys preheated to 200°C are added to the magnesium melt; keep warm for...

Embodiment 2

[0051] (1) Design and select Mg-5.2Bi-2.8Y-0.3Zn-0.06Mn (wt%) alloy composition ratio to form a magnesium alloy. The preparation method comprises the following steps: (mass ratio: Bi:Y=1.857:1)

[0052] 1) Ingredients: with pure Mg (99.8wt%) ingots, pure Bi (99wt%) blocks, pure Zn blocks (99wt%) and Mg-30Y and Mg-10Mn master alloys as raw materials, after surface pretreatment (such as decontamination thing, scale etc., the following examples are the same), carry out batching according to the weight percent of above-mentioned magnesium alloy as target composition;

[0053] 2) Casting: set the furnace temperature to 720°C, heat slowly, and the heating rate is 25°C / min. Clean the crucible and put it into the furnace. When the temperature of the belt furnace rises to 720°C, put the magnesium ingot preheated to 200°C into the crucible of the melting furnace. Blocks, pure Zn blocks, and Mg-30Y and Mg-10Mn master alloys preheated to 200°C are added to the magnesium melt; keep warm f...

Embodiment 3

[0061] (1) Design and select Mg-6.0Bi-3.5Y-0.5Zn-0.07Mn (wt%) alloy composition ratio to form a magnesium alloy. The preparation method comprises the following steps: (mass ratio: Bi:Y=1.714:1)

[0062] 1) Ingredients: with pure Mg (99.8wt%) ingots, pure Bi (99wt%) blocks, pure Zn blocks (99wt%) and Mg-30Y and Mg-10Mn master alloys as raw materials, after surface pretreatment (such as decontamination thing, scale etc., the following examples are the same), carry out batching according to the weight percent of above-mentioned magnesium alloy as target composition;

[0063] 2) Casting: set the furnace temperature to 720°C, heat slowly, and the heating rate is 25°C / min. Clean the crucible and put it into the furnace. When the temperature of the belt furnace rises to 720°C, put the magnesium ingot preheated to 200°C into the crucible of the melting furnace. Blocks, pure Zn blocks, and Mg-30Y and Mg-10Mn master alloys preheated to 200°C are added to the magnesium melt; keep warm f...

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Abstract

The invention discloses a low-temperature rolling high-toughness wrought magnesium alloy and a preparation method thereof. The alloy is Mg-Bi-Y-Zn-Mn magnesium alloy which is prepared from the following chemical components in percentage by weight: 3.0-6.0% of Bi, 2.0-3.5% of Y, 0.3-0.5% of Zn, 0.01-0.08% of Mn and the balance of magnesium and unavoidable impurities, wherein the mass ratio of Bi toY is (0.9 to 3) to 1. The high-toughness magnesium alloy material prepared in the invention has the advantages of excellent mechanical properties and relatively good flame-retardant effect.

Description

technical field [0001] The invention relates to the field of metal materials and metal material processing, in particular to a low-temperature rolled high-strength toughness deformed magnesium alloy and a preparation method thereof; the novel magnesium alloy can be used as a potential heat-resistant magnesium alloy material. Background technique [0002] Compared with other metal structural materials, magnesium alloy is the lightest commercial metal structural material with a density of about 1.74g / cm 3 , has the advantages of high specific strength and rigidity, strong shock absorption, electromagnetic shielding and radiation resistance, and easy cutting and processing. It is a lightweight metal structural material developed after steel and aluminum alloys, and has broad application prospects. [0003] However, the low absolute strength, poor corrosion resistance, and poor room temperature plasticity greatly limit the application of magnesium alloy materials. At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C23/06C22C1/02C22F1/06
CPCC22C1/02C22C23/00C22C23/06C22F1/06
Inventor 赵维民孟帅举周君李永胜闻晶晶李其智董小锐余晖
Owner 北京中安璟润新材料技术有限公司
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