Temperature distortion resistant magnesium alloy containing Ca and Sr

A technology for heat-resistant deformation and magnesium alloys, applied in the field of heat-resistant deformation magnesium alloys and wrought magnesium alloys, to achieve the effects of good secondary deformation process performance, low cost, excellent elongation and heat resistance

Inactive Publication Date: 2009-07-08
HUNAN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The technical problem to be solved in the present invention is to propose a heat-resistant deformed magnesium alloy containing Ca and Sr, which can effectively refine the alloy structure by compounding a certain amount of Ca and Sr, aiming at the shortcomings of the existing deformed magnesium alloys. Combined with Al to form Al with high melting point 2 Ca and Al

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  • Temperature distortion resistant magnesium alloy containing Ca and Sr
  • Temperature distortion resistant magnesium alloy containing Ca and Sr
  • Temperature distortion resistant magnesium alloy containing Ca and Sr

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Embodiment 1

[0028] Example 1: An advanced heat-resistant deformation magnesium alloy containing Ca and Sr, the weight percentage of each component in the magnesium alloy is 8% Al, 1.5% Ca, 0.2% Sr, 0.6% Mn, and the balance is Mg And trace inevitable impurities.

[0029] The alloys of Comparative Example 1, Comparative Example 2, and Example 1 can be prepared by the following preparation process steps:

[0030] (1) Under the protection of flux RJ-2, after the industrial pure magnesium is completely melted, industrial pure aluminum and industrial pure manganese are respectively added at 720°C, and the alloy of Comparative Example 2 is then added with an Al-Ca master alloy. Example 1 Add Al-Ca master alloy and Al-Sr master alloy to the alloy;

[0031] (2) After all the alloying elements are dissolved, stir the alloy with a stir bar at 740°C for about 10 minutes, and then stand at this temperature for 20 minutes;

[0032] (3) After the static is completed, in SO 2 Pour the alloy liquid steadily i...

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Abstract

The invention provides an advanced heat-resisting deformation magnesium alloy comprising the following components by weight: Al of 6.0%-9.0%, Ca of 0.5%-3.0%, Sr of 0.05%-0.5%, Mn of 0.1%-0.8%, Mg and ineluctable foreign matters of the rest.The cost of the alloy which does not contain rare-earth elements is low. The formability range of the alloy is extended because the added elements can thin the alloy tissue substantially; and the distribution of heat-resisting phases is turned from bulky bocks or bones to fine and scattered state, which improves the formability of the alloy. The alloy which has a good plastic property and forming ability and has a large deformation temperature range is suitable for common processes of extrusion pressing, drawing, rolling and smithing and can bear bigger deflection and higher deformation velocity at one time. The alloy that can be used as the light high-strength heat-resistant structural metallic material will be widely used for high-temperature transportation piping and high-temperature load-carrying construction of aerospace, automobiles, track trains and the like.

Description

Technical field [0001] The invention relates to a wrought magnesium alloy, in particular to a heat-resistant wrought magnesium alloy containing Ca and Sr. It belongs to the technical field of metal structural materials. Background technique [0002] As the lightest commercial metal structural material, magnesium alloy has high specific strength, specific rigidity, excellent damping performance, and various characteristics such as antimagnetic, shielding, and heat dissipation. It is used in aerospace, automotive, 3C (computer, communication, consumer Electronics) and other fields have been widely used. Take the application of magnesium alloy in automobiles, motorcycles, and rail trains as an example. It can not only significantly reduce weight, improve vehicle dynamic performance and reduce energy consumption, but also limit the improvement of vehicle structure and absorb vibration and noise. However, the current use of magnesium is far from giving full play to the potential advan...

Claims

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Application Information

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IPC IPC(8): C22C23/02
Inventor 李落星白星梁桂平胡文俊
Owner HUNAN UNIV
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