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Heatproof magnesium alloy containing Nb

A magnesium alloy, heat-resistant technology, applied in the field of magnesium alloys, can solve the problems of being unable to apply to high temperature environments above 150°C, low melting point, and inability to adapt to high temperatures above 150°C, achieving good fluidity and die-casting properties, and improving elongation The effect of elongation and excellent mechanical properties

Active Publication Date: 2013-03-27
海宁市钱江兴业投资开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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: because the β phase in the alloy structure of the above-mentioned MgAlSi series magnesium alloy is still in the form of Mg 17 Al 12 Mainly, Mg 17 Al 12 The melting point is low, so that the existing MgAlSi series magnesium alloy cannot adapt to the high temperature above 150 ℃, so it cannot be used in the high temperature environment above 150 ℃

Method used

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  • Heatproof magnesium alloy containing Nb

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Experimental program
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Effect test

Embodiment 1

[0027] The heat-resistant magnesium alloy is prepared 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 Al1.6%, Si0.5%, Mn0.05%, Y0.001%, Nb0. 0002%, Ti0.001%, and the rest is Mg.

[0028] Castings are heat treated.

[0029] See Table 1 for the properties of the magnesium alloy castings provided in this example.

Embodiment 2

[0031] 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 Al9.8%, Si2.5%, Mn0.7%, Sm10%, Nb4%, Sr0 .3%, the rest is Mg.

[0032] Castings are heat treated.

[0033] See Table 1 for the properties of the magnesium alloy castings provided in this example.

Embodiment 3

[0035]Prepare the heat-resistant magnesium alloy according to the steps described in the above-mentioned process two. The casting adopts high-pressure die-casting, and the weight percentage of the heat-resistant magnesium alloy is composed of Al4%, Si0.6%, Mn0.06%, Nd9%, Nb3%, and C0.3%. , and the rest are Mg.

[0036] See Table 1 for the properties of the magnesium alloy castings provided in this example.

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Abstract

The invention discloses a heatproof magnesium alloy containing Nb, which belongs to the magnesium alloy field. The magnesium alloy is composed of Mg, Al, Si, Mn, rare earth, Nb and M, and comprises the following components by weight: 1.6-9.8% of Al, 0.5-2.5% of Si, 0.05-0.7% of Mn, 0.0001-10% of rare earth, 0.0002-4% of Nb, 0.0001-0.3% of M and the balance of Mg. M element is at least one selected in Ti, Sr, C and B. According to the invention, a rare earth element and an Nb element are added in the magnesium alloy, a structure of a beta phase is changed, thereby the high temperature resistance performance of the magnesium alloy is enhanced, the heatproof magnesium alloy containing Nb 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 MgAlSi heat-resistant magnesium alloy suitable for casting, especially die-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 MgAlSi die-casting magnesium alloys are YM102, YM103, YM104, YM105, YM106; the grades of MgAlSi die-casting magnesium alloys of the American standard ASTM B are AS21A, AS21B, AS41A, AS41B; the grades of MgAlSi die-casting magnesium alloys of the Japanese standard JIS H The grades are MDC6 and MDC3B; the MgAlS...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/02C22C23/06
Inventor 冯俊
Owner 海宁市钱江兴业投资开发有限公司
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