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High Strength Heat Resistant Rare Earth Magnesium Alloy

A rare-earth magnesium and high-strength technology, applied in the field of alloys, can solve problems such as difficult to meet high temperature resistance, fatigue failure of parts, and development limitations of magnesium alloys, so as to expand the scope of use, improve heat resistance, and expand the use of high-heat environments required effect

Inactive Publication Date: 2018-08-03
XIANGTAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ZK60 has poor plasticity at room temperature, especially poor heat resistance, and has a high tendency to thermal cracking. Magnesium alloy parts need to withstand harsh environments such as high temperature, corrosion, and alternating loads during service. Over time, magnesium alloy parts will germinate on the surface. The source of fatigue cracks, the source of fatigue cracks, continues to further expand into cracks, and the parts will fail due to fatigue damage; therefore, it is difficult to meet the use in high temperature environments, especially the use requirements in the aerospace field, which has caused great damage to the development of magnesium alloys. limits

Method used

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  • High Strength Heat Resistant Rare Earth Magnesium Alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] The magnesium alloys of Examples 1-6 were prepared according to the ratio of raw materials in Table 1 and the following methods.

[0035] Table 1 Group distribution ratio table

[0036]

Mg(wt%)

Zn(wt%)

Zr (wt%)

Nd (wt%)

Y (wt%)

Impurities (wt%)

Example 1

86.97

6

0.5

2.5

4

0.03

Example 2

83.97

6

0.5

1.5

8

0.03

Example 3

87.97

6

0.5

1.5

4

0.03

Example 4

81.47

6

0.5

4

8

0.03

Example 5

88.47

6

0.5

2

3

0.03

Example 6

87.47

6

0.5

3

3

0.03

[0037] For each embodiment described in the above table 1, the rare earth magnesium alloy provided by the present invention can be obtained by adopting the following preparation method, and the specific preparation method is as follows:

[0038] a. Preheat pure magnesium, pure zinc ingots and intermediate alloys in an oven to 400°C according to the ratio ...

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Abstract

The invention discloses a rare earth and magnesium alloy. The rare earth and magnesium alloy comprises, by weight, 5.0-6.0% of Zn, 0.30-0.90% of Zr, 1.0-5.0% of Nd, 1.0-10.0% of Y and the balance Mg and inevitable impurities. According to the rare earth and magnesium alloy, the rare earth element which can enable grains to remarkably refine the alloy is added, so that mechanical performance, in particular to heat resistance, of a magnesium alloy is greatly improved, and the wide application scope is achieved.

Description

technical field [0001] The invention relates to a rare-earth magnesium alloy, in particular to designing a high-strength heat-resistant rare-earth magnesium alloy, which belongs to the field of alloy technology. Background technique [0002] Magnesium alloys are very attractive commercial lightweight structural materials due to their low density, high specific strength and specific stiffness, high dimensional stability and thermal conductivity, and good mechanical properties. In addition, magnesium is one of the most abundant elements on earth, one of the few inexhaustible and inexhaustible metal resources, and easy to recycle. Therefore, a large number of magnesium alloys used in the automotive and aviation fields will be an important direction for the development of the future manufacturing industry, not only to achieve the greatest weight reduction effect, but also to alleviate the increasingly serious energy problems. [0003] At present, the magnesium alloy parts in au...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/04C22C23/06C22C1/03
CPCC22C1/03C22C23/04C22C23/06
Inventor 覃波尹付成吴安如
Owner XIANGTAN UNIV