Magnesium-zinc-copper magnesium alloy containing cerium

A copper-magnesium alloy and chemical composition technology, applied in the field of metal materials, can solve the problem of less alloy, achieve the effects of refining grains, inhibiting the slip of grain boundaries, and improving mechanical and casting properties

Inactive Publication Date: 2011-05-11
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, studies have found that Mg-Zn-Cu alloys have good casting properties and weldability, but the alloys must be heat-treated to achieve their best mechanical properties
Moreover, the research on Mg-Zn-Cu alloys at home and abroad is still in its infancy, and there are few alloy systems developed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be further described below in conjunction with specific implementation methods.

[0014] The contents and proportions (percentage by weight) of Examples 1-5 are shown in Table 1.

[0015] Table 1 Example alloy content and proportion (mass percentage)

[0016] Example

[0017] The present invention can be refined by adopting induction furnace iron mold casting method according to the proportioning of said embodiment.

[0018] The actual performance of Examples 1-5 is shown in Table 2.

[0019] Table 2 Example alloy mechanical properties

[0020] Example

[0021] The room temperature tensile strength of all the example alloys in Table 2 is greater than 320MPa, the yield strength is greater than 260MPa, and the elongation is in the range of 9-11%. The lower limit values ​​of room temperature tensile strength and yield strength are achieved in Example 1. The chemical content of the alloy is: Zn 6.0%, Cu 3.0%, Ce 1%, impurity...

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Abstract

The invention discloses a magnesium-zinc-copper magnesium alloy containing cerium, which is applicable to the field of metal materials. The magnesium-zinc-copper magnesium alloy containing cerium is prepared from the following components in percentage by weight: 6.0-10.0% of Zn, 3.0-10.0% of Cu, 0.15-1.80% of Ce, no more than 0.15% of inevitable impurities and the balance of Mg. Ce is added on the basis of the Mg-Zn-Cu alloy to refine the grain structure, thereby influencing the distribution of Zn and Cu in the alloy, and the type, shape and content of the second phase. The magnesium-zinc-copper magnesium alloy containing cerium has high room-temperature properties; and at room temperature, the tensile strength is not lower than 320 MPa, the yield strength is not lower than 260 MPa, and the elongation percentage is 9-11%.

Description

technical field [0001] The invention relates to a cerium-containing magnesium-zinc-copper-magnesium alloy, which belongs to the technical field of metal materials. [0002] Background technique [0003] Magnesium alloy has the characteristics of low density, high specific strength and specific stiffness, excellent damping and vibration reduction performance and casting performance, and has attracted extensive attention in transportation, aerospace and military fields. Mg-Zn-Cu alloy is a new type of magnesium alloy developed in the 1980s. The maximum solid solubility of Zn in Mg is 6.2%, and the solid solubility decreases significantly with the decrease of temperature. Mg-Zn alloy improves its strength through solution aging. The addition of Cu increases the eutectic temperature of the Mg-Zn alloy on the one hand, so that it has a higher solution treatment temperature so that Zn and Cu can be dissolved in the magnesium matrix to the greatest extent, and on the other hand c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04
Inventor 胡耀波潘复生赵冲邓娟彭建王敬丰
Owner CHONGQING UNIV
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