Preparation method of microalloyed ultrahigh-strength magnesium alloy

An ultra-high-strength, micro-alloying technology, used in chemical instruments and methods, mixers, mixers with rotary stirring devices, etc., can solve the problems of high cost, difficulty in matching the strength and plasticity of materials, and improve the strength. , improve stability and uniformity, simple and easy to operate effect

Active Publication Date: 2021-12-17
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems that the cost of existing magnesium alloy materials is too high, and the mate

Method used

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  • Preparation method of microalloyed ultrahigh-strength magnesium alloy
  • Preparation method of microalloyed ultrahigh-strength magnesium alloy
  • Preparation method of microalloyed ultrahigh-strength magnesium alloy

Examples

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Example Embodiment

[0039] DETAILED DESCRIPTION OF THE INVENTION The present embodiment is a method of preparing a microalloyized ultra-high intensity magnesium alloy, specifically, according to the following steps:

[0040] First, prepare a micro-metallized magnesium alloy: Place the pure magnesium block in a ribbed crucible, cover the lid on the top of the ribbed crucible, place the ribs in the resistance heating furnace, in the protective atmosphere The pure magnesium blocks are heated to 720 ° C to 740 ° C. After the magnesium is fully melted, the preheated pure Zn particles and the preheated MG-30nd alloy are added to the pure MG melt, and then mixed The melt is heated to 760 ° C to 780 ° C, and the preheated MG-30ZR intermediate alloy is added to the melt, and the roller mixing paddle extends into the melt and fixed, multi-field stress in 760 ° C ~ 780 ° C. Substance is stirred for 3 min ~ 5min; take out the slurry leaf stirring paddle, the melt is allowed to stand for 20 min to 25 min at 760 °...

Example Embodiment

[0051] DETAILED DESCRIPTION OF THE INVENTION Different from the specific embodiment of the present embodiment, the mass fraction of Zn in the cast MG-Zn-ND-Zr alloy described in step one is 3 wt.%, And the mass fraction of Nd is 0.3 wt. .%, Zr mass fraction is 0.5 wt.%, The margin is mg. Others are the same as specific embodiments.

Example Embodiment

[0052] DETAILED DESCRIPTION OF THE INVENTION 3: The present embodiment is different from that of the particular embodiment: the refineries described in the step one is CAF 2 MGCL 2 Mixture, where CAF 2 The mass fraction is 5 wt.%. Others are the same as those of the specific embodiments.

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Abstract

The invention discloses a preparation method of a microalloyed ultrahigh-strength magnesium alloy, and relates to a preparation method of a microalloyed magnesium alloy. The preparation method aims to solve the technical problems that an existing magnesium alloy material is too high in cost, and the strength and plasticity of the material are difficult to match well. In the preparation method, an Nd element is adopted as one of alloying elements of the magnesium alloy, a small quantity of a rare earth element Nd and an alloying element Zr are added into a traditional Mg-Zn binary alloy, after two-stage deformation heat treatment, microalloying is achieved, meanwhile, a good strengthening and toughening effect is achieved, it is ensured that the alloy has high strength and meanwhile still has acceptable plasticity, microalloying can also reduce the defects such as inclusion caused by alloying to the greatest extent, the cost is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a preparation method of microalloyed magnesium alloy. Background technique [0002] Magnesium alloys have excellent properties of low density, high specific strength and specific stiffness, and have obvious advantages in the application of modern metal lightweight, but poor plasticity and deformation ability limit the wide application of magnesium alloys. In this context, exploring and preparing new alloy components in order to obtain magnesium alloys with excellent comprehensive mechanical properties is the main research direction of current researchers. Studies have shown that the strength and plasticity of magnesium alloys can be effectively improved by adding appropriate alloying elements combined with a reasonable hot deformation process. Zn element can improve the strength, plasticity and creep resistance of the alloy; Zr element can refine the grain, reduce the hot cracking tendency, and improve the mechanical propertie...

Claims

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Application Information

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IPC IPC(8): C22C23/04C22C1/03C22F1/06B21C23/21B01F7/18
CPCC22C23/04C22C1/03C22F1/002C22F1/06B21C23/21
Inventor 聂凯波李玮邓坤坤张晋华
Owner TAIYUAN UNIV OF TECH
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