High-damping Mg-Zn-Ni-Y alloy and preparation process thereof

A high damping, alloy technology, applied in the field of high damping Mg-Zn-Ni-Y alloy and its preparation technology, can solve the problem that the damping performance has not been studied, and achieve convenient control of test parameters, easy operation and strong portability Effect

Active Publication Date: 2022-01-11
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can control the tensile strength of Mg-Y-Ni-Zr alloy to about 500MPa, but for magnesium alloys that only contain Mg-Y-Ni to form a large number of long-period phases, transition elements Zr, Zn, Mn, Ti The effect of rear damping performance has not been studied

Method used

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  • High-damping Mg-Zn-Ni-Y alloy and preparation process thereof
  • High-damping Mg-Zn-Ni-Y alloy and preparation process thereof
  • High-damping Mg-Zn-Ni-Y alloy and preparation process thereof

Examples

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Embodiment 1

[0025] A high damping Mg-Zn-Ni-Y alloy, the composition and mass percentage of alloy elements are: Zn 3.5wt%, Ni3.2wt%, Y 12.7wt%, impurity element content is less than 0.1wt%, and the balance is magnesium ; Its microstructure features are: the main phase is composed of magnesium phase and long-period phase, and the grain boundary is parallel long-period phase.

[0026] A preparation process of high damping Mg-Zn-Ni-Y alloy, comprising the following steps:

[0027] S1. Weigh raw materials according to the mass percentage of alloy elements: Zn 3.5wt%, Ni 3.2wt%, Y 12.7wt%, impurity element content is less than 0.1wt%, and the balance is magnesium; wherein, Y and Ni elements are Mg-30Y The master alloy (640g) and Mg-25Ni master alloy (160g) are added to the electromagnetic induction melting furnace, and the Zn element is added to the electromagnetic induction melting furnace in the form of Zn particles (52.5g). Keep it warm at 770°C for 2 hours and stir it by electromagnetic in...

Embodiment 2

[0030] A high damping Mg-Zn-Ni-Y alloy, the composition and mass percentage of alloy elements are: Zn 1.28wt%, Ni1.16wt%, Y 4.68wt%, impurity element content is less than 0.1wt%, and the balance is magnesium ; Its microstructure features are: the main phase is composed of magnesium phase and long-period phase, and the grain boundary is parallel long-period phase.

[0031] A preparation process of high damping Mg-Zn-Ni-Y alloy, comprising the following steps:

[0032] S1. Weigh raw materials according to the mass percentage of alloy elements: Zn 1.28wt%, Ni 1.16wt%, Y 4.68wt%, impurity element content is less than 0.1wt%, and the balance is magnesium; wherein, Y and Ni elements are Mg-30Y The master alloy (640g) and Mg-25Ni master alloy (160g) are added to the electromagnetic induction melting furnace, and the Zn element is added to the electromagnetic induction melting furnace in the form of Zn particles (52.5g). Keep warm at 770°C for 4 hours and stir by electromagnetic indu...

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Abstract

The invention provides a high-damping Mg-Zn-Ni-Y alloy and a preparation process thereof, and belongs to the technical field of magnesium alloys and preparation thereof. The alloy comprises the following elements in percentage by mass: 1.28-3.5wt% of Zn, 1.16-3.2wt% of Ni, 4.68-12.8wt% of Y, and the balance of magnesium and inevitable impurities; and the microstructure morphology characteristics are as follows: a main phase consists of a magnesium phase and a long period phase; and a grain boundary is a parallel long period phase. The alloy is a two-phase alloy mainly consisting of the magnesium phase and the long period phase, wherein the long period phase is an effective reinforcing phase in the magnesium alloy, and facilitates the damping performance of the alloy. The alloy is simple in process, high in transportability, easy to operate, lower in cost and energy-saved; and through control of the alloy components and a heat treatment process, the LPSO phase morphology and solid solution atoms of the alloy are controlled, so that the damping performance of the alloy can be greatly improved, the strength of the alloy is guaranteed, and the balance optimization of damping and mechanics of the magnesium alloy is realized.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy and its preparation, and in particular relates to a high-damping Mg-Zn-Ni-Y alloy and its preparation process. Background technique [0002] Vibration and noise are serious problems accompanying the rapid development of modern electric power, automobile and aerospace industries. Therefore, metal structural materials with good anti-vibration and noise reduction properties have been paid more and more attention. Magnesium alloy has the characteristics of high specific strength, excellent casting and machining performance, and recyclability. It has great potential in reducing weight and reducing energy consumption, so it has become the most promising lightweight structural material. [0003] Damping performance refers to the reduction of unwanted vibrations in a structure without external dampers. However, materials with high damping capacity usually exhibit poor mechanical properties. For ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C1/03
CPCC22C23/06C22C1/03
Inventor 鲁若鹏焦凯赵宇宏姚珂宇侯华闫希李南婷马君泽鱼帆
Owner ZHONGBEI UNIV
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