High-strength and high-Gd-content deformed magnesium alloy and preparing method thereof

A wrought magnesium alloy, high-strength technology, applied in the field of metal materials, can solve the problems of unstable performance, low strength of wrought magnesium alloy, inconvenient industrial production, etc., and achieve the effect of improving the strength and plasticity of the alloy, improving the strength of the alloy, and excellent plasticity.

Active Publication Date: 2016-11-23
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0010] In view of the defects in the prior art, the purpose of the present invention is to propose a high-strength and high-Gd deformed magnesium alloy and its preparation method, to overcome the key problems of the existing deformed magnesium alloys, such as low strength, inconvenient industrial production, and unstable performance

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  • High-strength and high-Gd-content deformed magnesium alloy and preparing method thereof

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Embodiment 1

[0038] This embodiment provides a high-strength and high-Gd deformed magnesium alloy and a preparation method thereof, the alloy composition (weight percentage) is: 12.4% Gd, 1.6% Y, 0.8% Zn, 0.4% Zr, impurity elements are less than 0.02%, The remainder is Mg.

[0039] Such as figure 1 As shown, the preparation method of the above-mentioned high-strength high-Gd deformed magnesium alloy is as follows:

[0040] S1. Preheat the raw materials to 200°C in an oven, and preheat the crucible to dark red after spraying the paint at room temperature. Put pure magnesium into SF 6 / CO 2 Preheat to melt in a dark red crucible under gas protection. Add pure Zn when the melting temperature of pure magnesium rises to about 690°C, and when the temperature continues to rise to about 720°C, slowly add Mg-Gd master alloy and Mg-Y master alloy into the melt successively, keep warm and stir . After that, the furnace temperature is raised to 780°C, and then the Mg-30Zr master alloy or the Mg-...

Embodiment 2

[0047] This embodiment provides a high-strength and high-Gd deformed magnesium alloy and a preparation method thereof, the alloy composition (percentage by weight) is: 12.6% Gd, 1.3% Y, 0.9% Zn, 0.5% Mn, impurity elements are less than 0.02%, The remainder is Mg.

[0048] The preparation method of the above-mentioned high-strength and high-Gd deformed magnesium alloy is as follows:

[0049] S1. Preheat the raw materials to 200°C in an oven, and preheat the crucible to dark red after spraying the paint at room temperature. Put pure magnesium into SF 6 / CO 2 Preheat to melt in a dark red crucible under gas protection. Add pure Zn when the melting temperature of pure magnesium rises to about 690°C, and when the temperature continues to rise to about 720°C, slowly add Mg-Gd master alloy and Mg-Y master alloy into the melt successively, keep warm and stir . After that, the furnace temperature is raised to 780°C, and then the Mg-30Zr master alloy or the Mg-10Mn master alloy is ...

Embodiment 3

[0056] This embodiment provides a high-strength and high-Gd deformed magnesium alloy and a preparation method thereof, the alloy composition (weight percentage) is: 12.4% Gd, 1.6% Y, 0.8% Zn, 0.4% Zr, impurity elements are less than 0.02%, The remainder is Mg.

[0057] The preparation method of the above-mentioned high-strength and high-Gd deformed magnesium alloy is as follows:

[0058] S1. Preheat the raw materials to 200°C in an oven, and preheat the crucible to dark red after spraying the paint at room temperature. Put pure magnesium into SF 6 / CO 2 Preheat to melt in a dark red crucible under gas protection. Add pure Zn when the melting temperature of pure magnesium rises to about 690°C, and when the temperature continues to rise to about 720°C, slowly add Mg-Gd master alloy and Mg-Y master alloy into the melt successively, keep warm and stir . After that, the furnace temperature is raised to 780°C, and then the Mg-30Zr master alloy or the Mg-10Mn master alloy is add...

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Abstract

The invention provides a high-strength and high-Gd-content deformed magnesium alloy and a preparing method thereof. The magnesium alloy comprises the following elements of Mg, Gd, Zn and one or more kinds of Y, Zr and Mn. The preparing method includes the following steps that a magnesium alloy cast ingot high in Gd content is prepared; after the magnesium alloy cast ingot is subjected to two steps of T4 solution treatment, quenching is conducted at the temperature ranging from 80 DEG C to 100 DEG C, and a T4-state magnesium alloy cast ingot is obtained; the T4-state magnesium alloy cast ingot is subjected to different-temperature extrusion forming and is then quenched at the temperature ranging from 15 DEG C to 30 DEG C, and a bar or plate is obtained; and the bar or plate is subjected to cold rolling and cold drawing deformation at the room temperature, then artificial aging is conducted, and a T10-state deformed magnesium alloy, namely the high-strength and high-Gd-content deformed magnesium alloy is obtained. According to the high-strength and high-Gd-content deformed magnesium alloy and the preparing method thereof, the preparing technology is simple, the performance is stable, the success rate is high, the production efficiency is high, and the high-strength and high-Gd-content deformed magnesium alloy and the preparing method thereof are easily applied to industrial production.

Description

technical field [0001] The invention relates to a deformed magnesium alloy with high strength and high Gd content and a preparation method thereof, belonging to the technical field of metal materials. Background technique [0002] As the metal structure material with the lowest density at present, magnesium alloy has significant weight reduction benefits in high-tech fields such as aerospace, automobiles, and electronics. For example, every 0.45kg reduction in weight of automobiles, commercial aircraft, and aircraft can save $3, $300, and $30,000 respectively , At the same time, weight reduction will reduce energy consumption and pollution emissions, which is of great significance for energy saving and emission reduction. If a large number of magnesium alloys can be used to replace the aluminum alloy and steel structure materials currently mainly used in aerospace, automotive, electronics and other industries, the weight reduction benefit can be effectively realized. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C1/03C22F1/06
CPCC22C1/03C22C23/06C22F1/06
Inventor 吴玉娟容伟王英张宇彭立明陈娟丁文江
Owner SHANGHAI JIAO TONG UNIV
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