A kind of high damping high strength mg-ca-sn magnesium alloy and its preparation method

A mg-ca-sn, magnesium alloy technology, applied in the field of high damping alloy materials and its preparation, can solve the problems of unbalanced mechanical properties and damping properties of binary magnesium alloys, failure to meet industrial requirements, complex production process, etc., to achieve Improve the effect of dislocation damping, avoid plugging and winding, and improve the effect of mechanical properties

Active Publication Date: 2021-12-21
DONGHUA UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-damping high-strength Mg-Ca-Sn ternary magnesium alloy and its preparation method, to overcome the unbalanced mechanical properties and damping performance of the binary magnesium alloy in the prior art, and the multi-element alloy ( Adding alloying elements greater than 4 kinds) causes the production process to be too complex and the defect of high cost, can not meet the industrial requirements of fields such as aviation, aerospace, automobile, etc. Composite addition to obtain high damping and high strength magnesium alloy

Method used

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  • A kind of high damping high strength mg-ca-sn magnesium alloy and its preparation method

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Embodiment 1

[0033] The selected alloy is Mg-Ca-Sn series magnesium alloy. According to the mass percentage, the Ca content is 0.2%, the Sn content is 0.35%, and the balance is Mg and unavoidable impurities, and the impurity content is ≤0.05%.

[0034] The preparation of the alloy is carried out according to the following steps:

[0035] (1) carrying out batching according to the mass percentage of described magnesium alloy;

[0036] (2) Place commercially pure magnesium, Mg-20% Ca master alloy and Mg-20% Sn master alloy in an oven for preheating at 200°C for 2 hours to eliminate moisture in the raw materials;

[0037] (3) CO at a volume ratio of 100:1 2 and SF 6 Under the protection of protective gas, the preheated industrial pure magnesium is heated to 700°C for melting;

[0038] (4) Raising the temperature of the pure magnesium melt to 740° C., removing scum on the surface of the melt, adding Mg-20% Sn master alloy and Mg-20% Ca master alloy to the pure magnesium melt, until the abov...

Embodiment 2

[0041] The selected alloy is Mg-Ca-Sn series magnesium alloy. According to the mass percentage, the Ca content is 0.56%, the Sn content is 0.38%, and the balance is Mg and unavoidable impurities, and the impurity content is ≤0.05%.

[0042] The preparation of the alloy is carried out according to the following steps:

[0043] (1) carrying out batching according to the mass percentage of described magnesium alloy;

[0044] (2) Place commercially pure magnesium, Mg-20% Ca master alloy and Mg-20% Sn master alloy in an oven for preheating at 200°C for 2 hours to eliminate moisture in the raw materials;

[0045] (3) CO at a volume ratio of 100:1 2 and SF 6 Under the protection of protective gas, the preheated industrial pure magnesium is heated to 700°C for melting;

[0046] (4) Raising the temperature of the pure magnesium melt to 740° C., removing scum on the surface of the melt, adding Mg-20% Sn master alloy and Mg-20% Ca master alloy to the pure magnesium melt, until the abo...

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Abstract

The invention relates to a high-damping high-strength Mg-Ca-Sn magnesium alloy and a preparation method thereof. According to mass percentage, the components include: 0.1-0.6% Ca, 0.1-0.4% Sn. The balance is Mg and unavoidable impurities such as Fe and Si, and the total impurity content is ≤0.05%. The invention utilizes the multi-element micro-alloying method to improve the damping performance and mechanical performance of the magnesium alloy.

Description

technical field [0001] The invention belongs to the field of high-damping alloy materials and their preparation, and in particular relates to a high-damping and high-strength Mg-Ca-Sn magnesium alloy and a preparation method thereof. Background technique [0002] The damping performance of materials has the functions of reducing vibration, reducing noise and improving fatigue performance, and there are strict requirements on it in practical applications. With the development of modern high technology, materials are required to have good damping, vibration and noise reduction capabilities. At present, the structural materials used in aerospace, aviation, automobile and other transportation fields, such as aluminum alloy, titanium alloy and steel, etc., have poor damping performance (quality factor Q -1 <<0.01), leading to vibration fatigue cracks in some parts and failure of instrumentation, threatening the reliability and life of the system operation. Failure analysi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C1/03
CPCC22C23/00C22C1/03
Inventor 郑兴伟梁拥成韩志林张国军钱仁飞马哲峰郭学伟蔡小芝
Owner DONGHUA UNIV
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