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Magnesium alloy with excellent room temperature plasticity and preparation method thereof

A magnesium alloy and deformed magnesium alloy technology, which is applied in the field of metal materials and metal material processing, can solve the problems of low room temperature plasticity of magnesium alloys, achieve the effects of inhibiting grain growth, reducing processing costs, and excellent flame retardancy

Active Publication Date: 2021-12-10
国家镁及镁合金产品质量监督检验中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the main problem of low room temperature plasticity of existing magnesium alloys, to provide a magnesium alloy with excellent room temperature plasticity and excellent flame retardancy and its preparation method

Method used

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  • Magnesium alloy with excellent room temperature plasticity and preparation method thereof
  • Magnesium alloy with excellent room temperature plasticity and preparation method thereof
  • Magnesium alloy with excellent room temperature plasticity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Design and select the Mg-2Bi-3Gd-0.06Mn (wt%) alloy composition ratio to form a magnesium alloy. The preparation method includes the following steps:

[0051] 1) Ingredients: use pure Mg ingot, pure Bi block, Mg-30Gd master alloy and Mg-5Mn master alloy as raw materials, after surface pretreatment (such as removal of dirt, scale, etc., the same as in the following examples), according to the above objectives ingredients for batching;

[0052] 2) Melting: set the furnace temperature to 700-730°C (for example, 700°C). When the furnace temperature rises to the predetermined temperature, put the pure Mg ingot preheated to 200°C into the crucible of the melting furnace. After it is melted, Add the pure Bi block preheated to 50°C and the Mg-Gd master alloy preheated to 200°C into the molten magnesium; then raise the melting temperature to 750-760°C (for example, 750°C) and keep it warm for 10 minutes , then stirred for 5 minutes, stood still for 5 minutes, added Mg-5Mn m...

Embodiment 2

[0060] (1) Design and select the Mg-1.5Bi-1.5Gd-0.08Mn (wt%) alloy composition ratio to form a magnesium alloy. The preparation method includes the following steps:

[0061] 1) Ingredients: Use pure Mg ingots, pure Bi blocks, Mg-30Gd master alloys and Mg-5Mn master alloys as raw materials, after surface pretreatment (such as removal of dirt, scale, etc.), and ingredients according to the above target ingredients;

[0062] 2) Melting: set the furnace temperature to 700-730°C (for example, 720°C). When the furnace temperature rises to the predetermined temperature, put the pure Mg ingot preheated to 200°C into the crucible of the melting furnace. After it is melted, Add the pure Bi block preheated to 50°C and the Mg-Gd master alloy preheated to 200°C into the molten magnesium; then raise the melting temperature to 750-760°C (for example, 755°C) and keep it warm for 10 minutes , then stirred for 5 minutes, stood still for 5 minutes, added Mg-5Mn master alloy, and kept it warm for...

Embodiment 3

[0070] (1) design and select Mg-1Bi-1.5Gd-0.05Mn (wt%) alloy composition ratio to form a magnesium alloy, and the preparation method comprises the following steps:

[0071] 1) Ingredients: Use pure Mg ingots, pure Bi blocks, Mg-30Gd master alloys and Mg-5Mn master alloys as raw materials, after surface pretreatment (such as removal of dirt, scale, etc.), and ingredients according to the above target ingredients;

[0072] 2) Melting: set the furnace temperature to 700-730°C (for example, 730°C). When the furnace temperature rises to the predetermined temperature, put the pure Mg ingot preheated to 200°C into the crucible of the melting furnace. After it is melted, Add the pure Bi block preheated to 50°C and the Mg-Gd master alloy preheated to 200°C into the molten magnesium; then raise the melting temperature to 750-760°C (for example, 760°C) and keep it warm for 10 minutes , then stirred for 5 minutes, stood still for 5 minutes, added Mg-5Mn master alloy, and kept it warm for ...

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Abstract

The invention provides a magnesium alloy with excellent room temperature plasticity, which is characterized in that the magnesium alloy is a Mg-Bi-Gd-Mn magnesium alloy, and its components are: Bi 1-3%, Gd 1.5-4% , Gd≥1.5%, Mn 0.05-0.15%, the balance is Mg, wherein the Bi / Gd content ratio is 0.25-2. The elongation of the alloy at room temperature can reach more than 40%, exhibiting excellent room temperature plasticity, and it is a potential magnesium alloy material that can be used for further room temperature plastic processing or superplastic forming technology; in addition, the alloy can be used in casting and heat treatment The process exhibited excellent flame retardant properties.

Description

technical field [0001] The invention relates to the field of metal materials and metal material processing, in particular to a magnesium alloy with excellent room temperature plasticity and a preparation method thereof. Background technique [0002] Energy, materials and information are the three pillars of the development of human society. With the increasingly tight consumption of iron ore and other resources, as well as the increasingly severe situation of energy conservation and emission reduction, the development and utilization of resource-rich magnesium-based materials is an inevitable trend. Among metal materials, the density of magnesium is about 1.74g / cm 3 , is 2 / 3 of aluminum alloy, 1 / 4 of steel, magnesium alloy has a series of advantages such as low density, high specific strength and specific stiffness, good electromagnetic shielding effect, good damping and shock absorption, and easy recycling and reuse. Known as "green metal engineering materials in the 21st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/06C22C23/00C22C1/03C22F1/06
CPCC22C23/06C22C23/00C22C1/03C22F1/06
Inventor 钱亚锋赵言辉方明赵建峰孙志阳吴洋苏晓华
Owner 国家镁及镁合金产品质量监督检验中心
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