High-plasticity magnesium alloy and preparation method thereof

A magnesium alloy, high plasticity technology, applied in the field of magnesium alloys, metal materials and metal material processing, can solve the problems of low room temperature plasticity, and achieve the advantages of inhibiting grain growth, good flame retardant performance, and promoting dynamic recrystallization and nucleation. Effect

Active Publication Date: 2019-03-01
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the main problem of low room temperature plasticity of existing magnesium alloys, the present invention provides a novel magnesium alloy with excellent room temperature plasticity and good flame retardancy and a preparation method thereof

Method used

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  • High-plasticity magnesium alloy and preparation method thereof
  • High-plasticity magnesium alloy and preparation method thereof
  • High-plasticity magnesium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Design and select the Mg-6.0Bi-3.2Nd-0.08Mn (wt%) alloy composition ratio to form a magnesium alloy. The preparation method includes the following steps: (wherein, the mass ratio Bi:Nd=6.0:3.2)

[0043] 1) Ingredients: Use pure Mg ingots, pure Bi blocks, Mg-30Nd master alloys and Mg-10Mn master alloys as raw materials, after surface pretreatment (removal of dirt, scale, etc.), and ingredients according to the above target ingredients;

[0044] 2) Melting: Set the furnace temperature to 730°C. When the furnace temperature rises to the predetermined temperature, put the pure Mg ingots preheated to 200°C into the crucible of the melting furnace. After they are melted, preheat them to 50°C The pure Bi block and the Mg-Nd master alloy preheated to 200°C are added to the molten magnesium; then the melting temperature is raised to 770°C and kept for 15 minutes, then stirred for 5 minutes, left for 5 minutes, and added to the preheated To the Mg-10Mn master alloy at 200°C, ...

Embodiment 2

[0052] (1) Design and select the Mg-5.2Bi-2.8Nd-0.05Mn (wt%) alloy composition ratio to form a magnesium alloy. The preparation method includes the following steps:

[0053] 1) Ingredients: Use pure Mg ingots, pure Bi blocks, Mg-30Nd master alloys and Mg-10Mn master alloys as raw materials, after surface pretreatment (removal of dirt, scale, etc.), and ingredients according to the above target ingredients; (where , mass ratio Bi:Nd=5.2:2.8)

[0054] 2) Melting: Set the furnace temperature to 730°C. When the furnace temperature rises to the predetermined temperature, put the pure Mg ingots preheated to 200°C into the crucible of the melting furnace. After they are melted, preheat them to 50°C The pure Bi block and the Mg-Nd master alloy preheated to 200°C are added to the molten magnesium; then the melting temperature is raised to 770°C and kept for 15 minutes, then stirred for 5 minutes, left for 5 minutes, and added to the preheated To the Mg-10Mn master alloy at 200°C, keep...

Embodiment 3

[0062] (1) Design and select Mg-4.5Bi-2.6Nd-0.08Mn (wt%) alloy composition ratio to form a magnesium alloy. The preparation method includes the following steps:

[0063] 1) Ingredients: Use pure Mg ingots, pure Bi blocks, Mg-30Nd master alloys and Mg-10Mn master alloys as raw materials, after surface pretreatment (removal of dirt, scale, etc.), and ingredients according to the above target ingredients; (where , mass ratio Bi:Nd=4.5:2.6)

[0064]2) Melting: Set the furnace temperature to 730°C. When the furnace temperature rises to the predetermined temperature, put the pure Mg ingots preheated to 200°C into the crucible of the melting furnace. After they are melted, preheat them to 50°C The pure Bi block and the Mg-Nd master alloy preheated to 200°C are added to the molten magnesium; then the melting temperature is raised to 770°C and kept for 15 minutes, then stirred for 5 minutes, left for 5 minutes, and added to the preheated To the Mg-10Mn master alloy at 200°C, keep it w...

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Abstract

The invention relates to high-plasticity magnesium alloy and a preparation method thereof. The alloy is Mg-Bi-Nd-Mn magnesium alloy, and comprises the following chemical components in percentages by mass: 2-8 wt% of Bi, 1.5-4 wt% of Nd, 0.05-0.15 wt% of Mn, and the balance of Mg and inevitable impurities, and moreover, the mass ratio of Bi to Nd equals to 1.3-2: 1. The process is simple, the plasticity of deformed magnesium alloy at the room temperature is excellent, the ductility at the room temperature reaches 43% or above, and meanwhile, the flame retardant property is good.

Description

technical field [0001] The invention relates to the field of metal materials and metal material processing, in particular to a Mg-Bi-Nd-Mn high room temperature plastic flame-retardant magnesium alloy and a preparation method thereof. The alloy has excellent plasticity at room temperature, can be used as a blank of a low-temperature large plastic deformation magnesium alloy, and a potential heat-resistant magnesium alloy material, has broad application prospects, and belongs to the technical field of magnesium alloys. Background technique [0002] Energy, materials and information are the three pillars of the development of human society. With the increasing consumption of resources such as iron ore and the increasingly severe situation of energy conservation and emission reduction, the development and utilization of resource-rich magnesium-based materials is an inevitable trend. Magnesium alloy is currently the lightest commercial metal structure material, which has the adv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C23/00C22C23/06C22F1/06
CPCC22C1/03C22C23/00C22C23/06C22F1/002C22F1/06
Inventor 余晖孟帅举周君范少达李其智闻晶晶李永胜赵维民
Owner HEBEI UNIV OF TECH
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