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Heat-resisting magnesium alloy

A magnesium alloy, heat-resistant technology, applied in the field of magnesium alloys, can solve the problems of discomfort of components, high temperature resistance, low melting point, etc., and achieve the effects of good fluidity and die casting, improved high temperature resistance, and excellent mechanical properties.

Inactive Publication Date: 2012-08-01
嘉兴佳斯贝特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the above-mentioned MgAlMn series magnesium alloy is due to the β phase in the alloy structure as Mg 17 Al 12 Mainly, Mg 17 Al 12 The melting point is low, and it is not resistant to high temperature. The tensile strength of the above-mentioned MgAlMn series magnesium alloy is only tens of MPa at a high temperature of 200 ° C. high temperature demand

Method used

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  • Heat-resisting magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare the heat-resistant magnesium alloy according to the steps described in the above-mentioned process one, and the casting adopts metal mold casting, and the weight percentage of the magnesium alloy is composed of Al 1.5%, Mn 0.1%, Sm 0.0002%, Nb 0.0002%, Zr 0.001%, and the rest is Mg.

[0029] Heat treatment of castings (T4 solid solution treatment process): the castings are heated to 400°C in a box-type resistance furnace and kept for 16 hours. After the castings are released from the furnace, they are water quenched at a water temperature of 80°C.

[0030] See Table 1 for the properties of the magnesium alloy castings provided in this example.

Embodiment 2

[0032] Prepare the heat-resistant magnesium alloy according to the steps described in the above process two, the casting adopts semi-solid casting, and the weight percentage of the magnesium alloy is composed of Al 25%, Mn 2%, Y 16%, Nb 4%, Zr 2%, and the rest is Mg.

[0033] Heat treatment of castings (T4 solid solution treatment process): the castings are heated to 400°C in a box-type resistance furnace and kept for 16 hours. After the castings are released from the furnace, they are water quenched at a water temperature of 80°C.

[0034] See Table 1 for the properties of the magnesium alloy castings provided in this example.

Embodiment 3

[0036]Prepare the heat-resistant magnesium alloy according to the steps described in the above-mentioned process three. The standard grade MgAlMn series die-casting magnesium alloy added in the preparation process is AM60B. The casting adopts high-pressure die-casting. The weight percentage of the heat-resistant magnesium alloy is composed of Al 6%, Mn 0.24%, Pr0.2%, Nb 1%, Zr 0.6%, and the rest is Mg; the corresponding standard brand die-casting magnesium alloy without Nb is AM60B.

[0037] See Table 1 for the properties of the magnesium alloy castings provided in this example.

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Abstract

The invention discloses heat-resisting magnesium alloy and belongs to the field of magnesium alloy. The heat-resisting magnesium alloy comprises the following elements in percent by weight: 1.5 to 25% of Al (aluminium), 0.1 to 2% of Mn (manganese), 0.0002 to 16% of rare earth, 0.0002 to 4% of Nb (niobium), 0.001 to 2% of Zr (zirconium), and Mg (magnesium) in balancing amount. The beta-phase structure is changed by adding the rare earth element and the Nb element in the magnesium alloy, and the grain refinement and the alloy liquid purification are achieved by adding the Zr element, so as to improve the high temperature resistance of the magnesium alloy, and obtain the heat-resisting magnesium alloy which has an excellent mechanical property, machinability, flowability and good die-casting performance and is suitable for casting, particularly die-casting.

Description

technical field [0001] The invention relates to a magnesium alloy, in particular to a MgAlMn series heat-resistant magnesium alloy with good die-casting property. 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 MgAlMn series die-casting magnesium alloys are YM202, YM203, YM204, YM205; the grades of MgAlMn series die-casting magnesium alloys of the American standard ASTM B are AM50A, AM60A, AM60B; the grades of MgAlMn series of die-casting magnesium alloys of the Japanese standard JIS H are MDC2B, MDC4, MDC5; European stand...

Claims

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Application Information

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IPC IPC(8): C22C23/02
Inventor 冯俊
Owner 嘉兴佳斯贝特新材料有限公司
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