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Mg-Zn-Y magnesium alloy and preparation method thereof

A magnesium alloy and alloy technology are applied in the field of Mg-Zn-Y magnesium alloy and its preparation to achieve the effects of improved mechanical properties, easy popularization and application, and low interfacial energy.

Active Publication Date: 2014-11-19
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned magnesium alloy quasi-crystal integral fraction is low, and adopt existing rapid solidification preparation technology to be difficult to obtain the problem of high corrosion resistance magnesium alloy, the present invention provides a A Mg-Zn-Y magnesium alloy material and its rapid solidification preparation method optimize the distribution ratio of magnesium alloy components so that the generated quasicrystal phase has a large volume fraction and is evenly distributed in the matrix, thereby solving the problem of partial quasicrystal content Low problem, the corrosion resistance of magnesium alloy is significantly improved, which meets the application requirements of magnesium alloy in industrial production as a lightweight structural material with high corrosion resistance

Method used

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  • Mg-Zn-Y magnesium alloy and preparation method thereof

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Experimental program
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Embodiment 1

[0040] Take the following steps to make:

[0041] 1) Preparation of Mg-Y master alloy by conventional casting method:

[0042] Use the weight ratio of 30.00%Y and 70.00%Mg as the raw material, put it into the crucible, heat and melt it and raise the temperature to 830°C, stir it evenly and pour the metal mold to make the Mg-Y master alloy. SF is introduced into the above operation process 6 :CO 2 A gas shield with a volume ratio of 1: 150 to obtain a Mg-Y master alloy;

[0043] 2) Preparation of Mg-Zn-Y cast alloy master ingot:

[0044]According to the weight ratio of 56.00% pure zinc ingot, 40% Mg-Y master alloy, and the balance is pure magnesium ingot, weigh the raw materials, and put SF into the resistance furnace 6 :CO 2 Gas protection with a volume ratio of 1:150, put the Mg-Y master alloy and pure magnesium ingot into a crucible preheated to 200°C, raise the temperature to 710°C, and when the Mg-Y master alloy and pure magnesium ingot are completely melt...

Embodiment 2

[0051] Take the following steps to make:

[0052] 1) Preparation of Mg-Y master alloy by conventional casting method:

[0053] Use the weight ratio of 29.50%Y and 70.50%Mg as the raw material, put it into the crucible, heat and melt it and raise the temperature to 840°C, stir it evenly and pour the metal mold to make the Mg-Y master alloy. SF is introduced into the above operation process 6 :CO 2 A gas shield with a volume ratio of 1: 150 to obtain a Mg-Y master alloy;

[0054] 2) Preparation of Mg-Zn-Y cast alloy master ingot:

[0055] According to the weight ratio of 55.50% pure zinc ingot, 38.98% Mg-Y master alloy, and the balance is pure magnesium ingot, weigh the raw materials, and put SF into the resistance furnace 6 :CO 2 Gas protection with a volume ratio of 1:150, put the Mg-Y master alloy and pure magnesium ingot into a crucible preheated to 300°C, raise the temperature to 740°C, and when the Mg-Y master alloy and pure magnesium ingot are co...

Embodiment 3

[0062] Take the following steps to make:

[0063] 1) Preparation of Mg-Y master alloy by conventional casting method:

[0064] Use the weight ratio of 30.00%Y and 70.00%Mg as the raw material, put it into the crucible, heat and melt it and raise the temperature to 820°C, stir it evenly and pour the metal mold to make the Mg-Y master alloy. SF is introduced into the above operation process 6 :CO 2 Gas shielding with a volume ratio of 1:150 to obtain Mg-Y master alloy;

[0065] 2) Preparation of Mg-Zn-Y cast alloy master ingot:

[0066] According to the weight ratio of 55.76% pure zinc ingot, 40.96% Mg-Y master alloy, and the balance is pure magnesium ingot, weigh the raw materials, and put SF into the resistance furnace 6 :CO 2 Gas protection with a volume ratio of 1:150, put the Mg-Y master alloy and pure magnesium ingot into a crucible preheated to 250°C, raise the temperature to 730°C, and when the Mg-Y master alloy and pure magnesium ingot are completely ...

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Abstract

The invention provides an Mg-Zn-Y magnesium alloy. The Mg-Zn-Y magnesium alloy comprises the following components in percentage by mass: 55.50-56.00% of Zn, 11.50-13.00% of Y, and the balance of magnesium and trace impurity elements; and the quasicrystal volume fraction of the Mg-Zn-Y magnesium alloy is 26.8-51.3%. The invention further provides a preparation method of the Mg-Zn-Y magnesium alloy; a fast solidification spraying method is adopted; the operation is simple and convenient; and the promotion and application are convenient. The Mg-Zn-Y magnesium alloy prepared by the fast solidification spraying method increases the quasicrystal phase volume fraction, solves such problems as lower magnesium alloy quasicrystal content and uneven tissue distribution in an existing preparation method, and improves the corrosion resistance and Vickers hardness.

Description

Technical field [0001] The present invention involves the field of high-performance magnesium alloy technology, which specifically involves a MG-Zn-Y magnesium alloy and its preparation method. Background technique [0002] Magnesium alloys have low density, high ratio and ratio, ratio of rigidity, good vibration reduction performance and magnetic shielding performance. The amount of resources is relatively rich. It is the lightest metal structure material in engineering.Application prospects.Among them, the application of magnesium alloy in automotive parts, in recent years, the improvement of manufacturing technology and process process has facilitated the application of magnesium alloy in the automotive industry.The increase in amplitude, but the poor corrosion resistance is the main factor that hinders the application of magnesium alloy. It has become the bottleneck of magnesium alloy as a lightweight structural material in the process of industrial production. [0003] Stud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/00B22D11/06
Inventor 滕新营许敏杨超平耿继伟
Owner UNIV OF JINAN
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