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High damping Mg-Sn-Ce alloy and preparation process thereof

A mg-sn-ce, high damping technology, applied in the field of multi-element magnesium alloys and their manufacturing, can solve the problems of limited, no necessary connection, and unfavorable damping performance, and achieves strong portability, low cost, and convenient control of test parameters. Effect

Active Publication Date: 2016-03-23
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing studies on the damping properties of Mg-Ce alloys are still limited.
[0003] In addition, people have studied the influence of alloying elements with low solid solubility on the damping performance of magnesium, while elements such as Sn and Y with high solid solubility are effective solid solution strengthening elements for magnesium, and many scholars believe that it is not conducive to damping. performance
CN101440438B discloses "the method of adding Ce to refine the CaMgSn phase in the Mg-Sn-Ca series magnesium alloy", which mainly studies the tensile and creep resistance properties, but does not study the influence on the damping properties, and between them no necessary connection

Method used

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  • High damping Mg-Sn-Ce alloy and preparation process thereof
  • High damping Mg-Sn-Ce alloy and preparation process thereof
  • High damping Mg-Sn-Ce alloy and preparation process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the high damping Mg-Sn-Ce alloy, the weight percentage of each component is 1.15% Sn, 0.45% Ce, less than 0.1% impurity elements, and the rest is Mg. The purity of raw materials industrially pure magnesium is greater than 99.9%, the purity of high-purity tin is greater than 99.95%, and the Mg-Ce master alloy (Mg-14.08wt%Ce) is compounded according to the above ratio. Put the three kinds of raw materials into the electromagnetic induction melting furnace for melting. During the melting process, argon is used as the protective gas. The temperature is raised to 770°C for heat preservation and electromagnetic induction stirring to make the ingredients uniform and the raw materials are fully melted. After all the raw materials are melted, cool down to 620°C and stand still. Insulated for 22 minutes, taken out and cooled in a salt bath to obtain a Mg-Sn-Ce alloy ingot.

[0021] The microstructure photo of the high damping magnesium alloy is obtained as figure 2 shown.

Embodiment 2

[0023] High-damping Mg-Sn-Ce alloy, the weight percentage of each component is 3.14% Sn, 0.48% Ce, less than 0.1% impurity elements, and the rest is Mg. The purity of raw materials industrially pure magnesium is greater than 99.9%, the purity of high-purity tin is greater than 99.95%, and the Mg-Ce master alloy (Mg-14.08wt%Ce) is compounded according to the above ratio. Put the three kinds of raw materials into the electromagnetic induction melting furnace for melting. During the melting process, argon is used as the protective gas. The temperature is raised to 770°C for heat preservation and electromagnetic induction stirring to make the ingredients uniform and the raw materials are fully melted. After all the raw materials are melted, cool down to 620°C and stand still. Insulated for 22 minutes, taken out and cooled in a salt bath to obtain a Mg-Sn-Ce alloy ingot.

[0024] The microstructure photo of the high damping magnesium alloy is obtained as image 3 shown.

[0025] ...

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Abstract

The invention discloses a high damping Mg-Sn-Ce alloy containing trace rare-earth and a preparation process thereof. The magnesium alloy is mainly composed of three elements Mg, Sn and Ce, and comprises the following alloying element components distributed in the alloy in percentage by weight: 0.5%-3.5% of Sn, 0.40%-0.49% of Ce, and the balance of magnesium and inevitable impurities. According to the high damping Mg-Sn-Ce alloy, the contents of Sn and Ce are designed through reasonable components, and an appropriate smelting process is adopted to prepare a regular parallel second-phase structure which is conductive to the damping performance of the alloy. The alloy components and the smelting process are controlled in a production process, such that second-phase morphology and distribution in the alloy can be controlled and the damping performance (SDC=41%) of the alloy can be effectively improved; and a density of the alloy is lower than 2g / cm<3>. The process of the present invention is simple, high in portability, low in cost and easy to operate, and can be widely applied to national defense and civilian use industries to achieve the effects of light weight, and vibration and noise reduction.

Description

technical field [0001] The invention relates to a multi-element magnesium alloy containing trace rare earth elements and a manufacturing method thereof, in particular to a high-damping Mg-Sn-Ce alloy and a preparation process thereof. Background technique [0002] Magnesium and its alloys, as one of the metal structural materials with the best damping performance at present, also have low density, high specific strength and specific stiffness, good thermal and electrical conductivity, strong resistance to dynamic impact loads, excellent electromagnetic radiation shielding ability, and abundant resources. A series of advantages, such as a series of advantages, have attracted more and more attention from people, and have been applied to a certain extent in aerospace, rail transit, 3C products and other fields. With the rapid development of modern society, the increasingly sophisticated and complex instruments and equipment, as well as the diversification of the working envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/03
CPCC22C1/03C22C23/00
Inventor 王敬丰吴忠山汪海波潘复生
Owner CHONGQING UNIV
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