Heatproof magnesium alloy

A magnesium alloy, heat-resistant technology, applied in the field of magnesium alloys, can solve problems such as the inability of magnesium alloys to meet the requirements, achieve excellent mechanical properties, delay the growth of grains, and have good fluidity and die casting.

Inactive Publication Date: 2013-03-27
孙俊亚 +8
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventors have found that the prior art has at least the following problems: with the development of science and technology, the application fields of magnesium alloys are becoming mor

Method used

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  • Heatproof magnesium alloy
  • Heatproof magnesium alloy

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Example Embodiment

[0028] Example 1

[0029] The heat-resistant magnesium alloy is prepared according to the steps described in the second process above, the castings are cast by metal molds, and the weight percent of the magnesium alloy is divided into Zn 0.2%, Zr 0.1%, Y 0.0002%, Nb 0.0002%, Al 0.001%, and Sr 0.001 %, the rest is Mg.

[0030] The casting is heat treated. The properties of the magnesium alloy castings provided in this embodiment are shown in Table 1.

Example Embodiment

[0031] Example 2

[0032] The heat-resistant magnesium alloy is prepared according to the steps described in the first process above, and the casting is semi-solid casting. The weight percent of the magnesium alloy is divided into Zn 1%, Zr 1.5%, Sc 10%, Nb 2%, Al 1.2%, Ti 0.15 %, the rest is Mg.

[0033] The casting is heat treated.

[0034] The properties of the magnesium alloy castings provided in this embodiment are shown in Table 1.

Example Embodiment

[0035] Example 3

[0036] The heat-resistant magnesium alloy is prepared according to the steps described in the second process. The castings are high-pressure die-casting. The weight of the heat-resistant magnesium alloy is divided into Zn 9%, Zr 2%, Sm 16%, Nb 4%, Al 1.49%, and Ca 2%. , The rest is Mg.

[0037] The properties of the magnesium alloy castings provided in this embodiment are shown in Table 1.

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Abstract

The invention discloses a heatproof magnesium alloy, which belongs to the magnesium alloy field. The magnesium alloy is composed of Mg, Zn, Zr, rare earth, Nb, Al and M, and comprises the following components by weight: 0.2-9% of Zn, 0.1-2% of Zr, 0.0002-16% of rare earth, 0.0002-4% of Nb, 0.001-1.49% of Al, 0.001-2% of M and the balance of Mg. The M element is at least one selected in Ti, Sr, Ca, C and B. The rare earth and an Nb element are added in the magnesium alloy, and a structure of a beta phase is changed; the combined action of Zr and the M element can strongly refine the crystal grain, and Zr and M are reacted with certain impurity element (such as Si) in an alloy liquid and deposited, and the alloy liquid is purified. The combined effect of the elements enhances the high temperature resistance performance of the magnesium alloy, the heatproof magnesium alloy has excellent mechanical property and machinery processability, and good fluidity and die casting performance, and is suitable for casting the heatproof magnesium alloy and die casting of the heatproof magnesium alloy.

Description

technical field [0001] The invention relates to a magnesium alloy, in particular to a high-performance heat-resistant magnesium alloy suitable for casting. Background technique [0002] With the development of science and technology, vehicles represented by automobiles need to further develop new products with higher fuel efficiency by reducing the weight of the body. In the automobile manufacturing industry, magnesium alloy, as a new type of lightweight metal material, is used by automobile manufacturers to replace traditional cast iron in order to achieve the purpose of reducing the weight of the vehicle body. [0003] At present, the grades of domestic cast magnesium alloys include ZM2, ZM3, ZM4, ZM6 and so on. These grades of alloys have the characteristics of good mechanical properties and casting properties. At the same time, because the β phase of ZM series magnesium alloys contains a certain amount of MgZr compounds with higher melting points or the combination of M...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/02C22C23/04C22C23/06
Inventor 冯俊
Owner 孙俊亚
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