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Cariaceous high-damping deformation magnesium alloy and its prepn process

A deformed magnesium alloy and high damping technology, which is applied in the field of magnesium-based materials and its preparation, can solve the problems of reduced damping performance and low strength of pure magnesium, and achieve the effects of high damping performance, improved mechanical properties, and increased strength and plasticity

Inactive Publication Date: 2007-01-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But the strength of pure magnesium is too low
However, practical structural magnesium alloys, such as Mg-Al-Zn, Mg-Zn-Zr and Mg-RE-Zr series of magnesium alloys, mainly have solid solution strengthening, precipitation strengthening, etc., and these solid solution solute atoms and precipitated phases act as strong pinning points for the slip dislocations on the Mg basal plane, resulting in a greatly reduced damping performance

Method used

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Effect test

specific Embodiment approach 1

[0014] Embodiment 1: The high-strength, toughness, and high-damping deformable magnesium alloy of this embodiment is a Mg-Zr-Cu-Mn alloy, and the weight percentages of each component are: zirconium 0.2-1.0%, copper 0.05-0.5%, manganese 0.05-1.5% %, Fe<0.003%, Ni<0.003%, other impurities<0.06%, and the balance is magnesium.

specific Embodiment approach 2

[0015] Embodiment 2: The high-strength, toughness, and high-damping deformable magnesium alloy of this embodiment is a Mg-Cu-Mn-Ce alloy, and the weight percentages of each component are: copper 1-10%, manganese 0.3-8%, cerium 0.05-0.5% %, Fe<0.003%, Ni<0.003%, other impurities<0.06%, and the balance is magnesium.

specific Embodiment approach 3

[0016] Embodiment 3: The high-strength, toughness, and high-damping deformable magnesium alloy of this embodiment is a Mg-Si-Cu alloy, and the weight percentages of each component are: silicon 0.5-5%, copper: 0.2-3%, Fe<0.003%, Ni<0.003%, other impurities<0.06%, and the balance is magnesium.

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Abstract

The process relates to excellent magnesium base material, and is coriaceous high-damping deformation magnesium alloy and its preparation process. For obtaining both high damping performance and high mechanical performance, the present invention adds Cu, Si and other alloy element with small solid solubility into Mg material to reduce dislocation pinning points and to raise damping performance, while adding Zr, Mn and other crystal grain fining alloy element to raise the mechanical performance. Through conventional extrusion on ingot and intense plastic deformation, the alloy has regulated grain orientation, superfine crystal structure and raised toughness and damping performance. The present invention has wide application value.

Description

technical field [0001] The invention relates to a magnesium-based material with high damping and excellent mechanical properties and a preparation method thereof. Background technique [0002] Among practical metal materials, magnesium and its alloys have the lowest density, and are known as ultra-lightweight materials in the 21st century. After the 1990s, with the development of magnesium smelting technology, the output of magnesium increased rapidly and the price dropped, especially the increasing demand for magnesium alloys in the fields of automobiles, electronics, communications, aerospace and national defense military industries, which brought A new round of magnesium research and application climax. In addition to its low density, magnesium has another remarkable feature: Of all light metal materials, pure magnesium has the highest damping properties. But the strength of pure magnesium is too low. However, practical structural magnesium alloys, such as Mg-Al-Zn, Mg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/02B22D21/04C22F1/06
Inventor 郑明毅乔晓光吴昆
Owner HARBIN INST OF TECH
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