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High-strength magnesium alloy containing rare earth and preparation method thereof

A magnesium alloy and high-strength technology, which is applied in the field of magnesium alloy materials and preparation, and rare earth-containing magnesium alloy materials and preparation fields, can solve the problem of shrinkage cavities, segregation, insufficient grain refinement of magnesium alloy castings, and limitations in the field of magnesium alloy utilization, etc. problem, to achieve the effect of high strength and excellent plasticity

Active Publication Date: 2019-07-12
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing magnesium alloy grains are not refined enough, magnesium alloy castings are prone to shrinkage cavities and segregation, and their mechanical properties are not ideal, which cannot meet the requirements of lightweight and high-strength materials for automobiles and other parts, resulting in the utilization of magnesium alloys. field is restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] In this embodiment, a high-strength rare earth-containing magnesium alloy is composed of the following mass percentages (%): the Al content is 3.5 wt%, the Ca content is 4.5 wt%, and the Mn content is 0.5 wt%. The Zn content is 3.0 wt%, the Zr content is 0.1 wt%, the Nd content is 0.9 wt%, the Sm content is 0.5 wt%, and the balance is Mg and unavoidable impurities.

[0057] In this embodiment, a method for preparing the high-strength rare earth-containing magnesium alloy of this embodiment, the steps are as follows:

[0058] a. Raw material preparation:

[0059] Pure Mg ingot, pure Al ingot, pure Ca ingot, pure Mn ingot, pure Zn ingot, pure Zr ingot, pure Sm ingot and pure Nd ingot are used as raw materials. Composition carries out raw material batching according to following mass percent (%) composition: Al content is 3.5wt%, Ca content is 4.5wt%, Mn content is 0.5wt%, Zn content is 3.0wt%, Zr content is 0.1wt%, Nd content is 0.9wt%, the Sm content is 0.5wt%, and the...

Embodiment 2

[0070] This embodiment is basically the same as Embodiment 1, especially in that:

[0071] In this embodiment, a high-strength rare earth-containing magnesium alloy is composed of the following mass percentages (%): the Al content is 3.5 wt%, the Ca content is 4.5 wt%, and the Mn content is 0.5 wt%. The Zn content is 3.0 wt%, the Zr content is 0.1 wt%, the Nd content is 0.8 wt%, the Sm content is 0.3 wt%, and the balance is Mg and unavoidable impurities.

[0072] In this embodiment, the preparation method of the high-strength rare earth-containing magnesium alloy of this embodiment, the steps are as follows:

[0073] a. Raw material preparation:

[0074] Pure Mg ingot, pure Al ingot, pure Ca ingot, pure Mn ingot, pure Zn ingot, pure Zr ingot, pure Sm ingot and pure Nd ingot are used as raw materials. Composition carries out raw material batching according to following mass percent (%) composition: Al content is 3.5wt%, Ca content is 4.5wt%, Mn content is 0.5wt%, Zn content i...

Embodiment 3

[0084] This embodiment is basically the same as the previous embodiment, and the special features are:

[0085] In this embodiment, a high-strength rare earth-containing magnesium alloy is composed of the following mass percentages (%): the Al content is 4.5 wt%, the Ca content is 1.0 wt%, and the Mn content is 0.25 wt%. The Zn content is 2.0 wt%, the Zr content is 0.03 wt%, the Nd content is 0.1 wt%, the Sm content is 0.1 wt%, and the balance is Mg and unavoidable impurities.

[0086] In this embodiment, a method for preparing the high-strength rare earth-containing magnesium alloy of this embodiment, the steps are as follows:

[0087] a. Raw material preparation:

[0088] Pure Mg ingot, pure Al ingot, pure Ca ingot, pure Mn ingot, pure Zn ingot, pure Zr ingot, pure Sm ingot and pure Nd ingot are used as raw materials. Composition carries out raw material batching according to following mass percent (%) composition: Al content is 4.5wt%, and Ca content is 1.0wt%, and Mn con...

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Abstract

The invention discloses high-strength magnesium alloy containing rare earth and a preparation method thereof. The alloy comprises, by weight, 3%-8% of Al, 0.5%-6.5% of Ca, 0.1%-1.2% of Mn, 1.5%-4.5% of Zn, 0.02%-2.5% of Zr, 0.05%-1.5% of Nd, 0.05%-1.5% of Sm and the balanced Mg and unavoidable impurities. The method comprises the steps that magnesium ingots are melted and alloyed; casting membersare produced, and dissolving treatment is conducted; uniform thermal processing is conducted, and aging treatment is conducted after deformation processing is conducted by squeezing and forging. According to the alloy and the method, high-strength magnesium alloy is provided, a magnesium material with diversified dimensions can be processed through plastic deformation treatment, demands on a lighthigh-strength material of automobile parts can be met, and the utilization field of the aluminum alloy is expanded.

Description

technical field [0001] The invention relates to a magnesium alloy material and a preparation method, in particular to a rare earth-containing magnesium alloy material and a preparation method, which are applied in the technical field of nonferrous metal materials. Background technique [0002] With the improvement of material lightweight requirements, magnesium alloy is called "green engineering material" because of its small density, good machinability, high specific strength and good heat dissipation performance, and now it has become more and more It has attracted the attention of the academic field and the manufacturing field, and has become a research hotspot. In order to adapt to the requirements of lightweight and improve the application of magnesium alloys in industrial production, the research and development of high-strength magnesium alloys has become an inevitable development trend. Ascertaining the microscopic mechanism of strengthening and toughening magnesium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/02C22F1/06B21J1/06B21C29/00
CPCB21C29/003B21J1/06C22C1/02C22C23/00C22F1/06
Inventor 吴广新贾慧超成毅张捷宇
Owner SHANGHAI UNIV
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