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High-damping Mg-Zn-Y alloy and preparation technique thereof

A preparation process and high damping technology, applied in the field of metal materials, can solve the problem of small crystal grains, achieve the effect of low cost, simple process, and favorable alloy damping

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

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Problems solved by technology

The overall performance of the alloy is relatively excellent, but after deformation treatment, due to the large number of solid solution atoms and second phases, the grain size is small, and the damping performance has not yet reached a satisfactory level.

Method used

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  • High-damping Mg-Zn-Y alloy and preparation technique thereof
  • High-damping Mg-Zn-Y alloy and preparation technique thereof
  • High-damping Mg-Zn-Y alloy and preparation technique thereof

Examples

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Effect test

Embodiment 1

[0027] Embodiment 1: A high-damping Mg-Zn-Y two-phase alloy and its preparation process, the alloy composition (weight percentage): Y-6.6%, Zn-4.2%, less than 0.1% of impurity elements, and the rest is Mg.

[0028] The manufacture method of this high damping Mg-Zn-Y alloy is carried out as follows:

[0029] Step 1: In the vacuum melting furnace, and pass through argon gas for protection, add alloying elements according to weight percentage Y=6.6%, Zn=4.2%. Among them, Y and Zn are added in the form of Mg-30Y master alloy and pure Zn respectively. Heat preservation at 820°C and electromagnetic induction stirring to fully melt the raw materials. After the alloy is completely melted, continue to stand at 780°C for 15 minutes, and then cast.

[0030] Step 2: Grind and polish the ingot, carry out secondary melting on the alloy ingot, heat it up to 820°C for 3 hours; after it is completely melted, keep it at a temperature gradient of 650°C for 1 hour; finally, place the sample in...

Embodiment 2

[0032] Embodiment 2: A kind of high damping Mg-Zn-Y alloy and its preparation process, alloy composition (weight percent):

[0033] Y-7.5%, Zn-4.6% impurity elements are less than 0.1%, and the rest is Mg.

[0034] The manufacture method of this high damping Mg-Zn-Y alloy is carried out as follows:

[0035] Step 1: In the vacuum melting furnace, and pass through argon gas for protection, add alloying elements according to weight percentage Y=6.6%, Zn=4.2%. Among them, Y and Zn are added in the form of Mg-30Y master alloy and pure Zn respectively. Heat preservation at 820°C and electromagnetic induction stirring to fully melt the raw materials. After the alloy is completely melted, continue to stand at 780°C for 15 minutes, and then cast.

[0036] Step 2: Grind and polish the ingot, carry out secondary melting on the alloy ingot, heat it up to 820°C for 3 hours; after it is completely melted, keep it at 650°C for 1 hour; then keep it at 400°C 10h; then place the sample at...

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Abstract

The invention discloses a high-damping Mg-Zn-Y alloy containing rare-earth yttrium and a manufacturing method thereof. The magnesium alloy is composed of the following components in percentage by weight: 4.0-4.8% of Y, 6.6-8.9% of Zn, and the balance of magnesium and inevitable impurities. By designing the Zn and Y contents according to the synthesis components, the alloy is mainly a two-phase alloy composed of a magnesium phase and a long-period phase, wherein the long-period phase is an effective strengthening phase in the magnesium alloy and is beneficial to the damping capacity of the alloy. The alloy composition control and smelting techniques are adopted to control the grain size and long-period phase (LPSO) distribution in the alloy, thereby greatly enhancing the damping capacity of the alloy, ensuring the alloy strength and implementing the balanced optimization of damping and mechanical properties of the magnesium alloy. The technique is simple and easy to operate, has the advantages of high transferability and lower cost, and can be used for aerospace, track traffic and textile technology to achieve the effects of damping and noise reduction.

Description

technical field [0001] The invention relates to a metal material, in particular to a high-damping Mg-Zn-Y alloy and a preparation process thereof. [0002] Background technique [0003] The development of modern weapons and equipment is becoming increasingly lightweight, high-speed and high-power, and the problems of vibration and noise caused by this have become particularly prominent. In addition, various means of transportation and 3C products (Computer, Communication, Consumption Electronics Products) put forward more urgent requirements for structural lightweight and vibration and noise reduction. Therefore, metal structural materials with low density, high specific strength and high damping are one of the urgent material requirements in aerospace, new weapon equipment and modern industrial development. Magnesium is the lightest commercial metal structure material, which meets the needs of lightweight. Magnesium is also the metal material with the best damping perform...

Claims

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Application Information

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IPC IPC(8): C22C23/06C22C1/02
Inventor 王敬丰鲁若鹏秦德昭吴忠山杨文翔
Owner CHONGQING UNIV
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