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A kind of multi-component heat-resistant magnesium alloy and preparation method thereof

A magnesium alloy, heat-resistant technology, applied in the field of multi-component heat-resistant magnesium alloy and its preparation, can solve the problems of poor heat resistance, high alloy cost, sudden strength drop, etc., and achieve the effect of good mechanical properties and creep resistance.

Active Publication Date: 2016-08-24
HAIMEN ZHONGDE ELECTRONICS DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of magnesium alloys is still far less than that of aluminum alloys. One of the reasons is that its heat resistance is poor. When the ambient temperature exceeds 120 ° C, the strength of ordinary magnesium alloys drops sharply, which limits its use in many industrial equipment and products. Applications
Although some high-performance heat-resistant magnesium alloys appeared in the middle and late 20th century, the composition of these alloys contains a relatively high proportion of precious elements, resulting in a high cost of the alloy. Therefore, there is an urgent need for a high-temperature resistant magnesium alloy Excellent Magnesium Alloy

Method used

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  • A kind of multi-component heat-resistant magnesium alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0018] A multi-component heat-resistant magnesium alloy, containing: Al: 4.1%, Cu: 3.2%, Mo: 0.5%, Ni: 0.1%, Ti: 1.0%, Pr: 0.1%, V: 0.34%, Sn : 2.3%, Be: 1.4%, Sr: 3.3%, Os: 0.1%, La: 0.5%, Ho: 0.8%, the balance is Mg, and the balance is Mg.

[0019] The preparation method of the heat-resistant magnesium alloy comprises the following steps:

[0020] (1) Raw material preparation: raw material preparation is carried out according to weight percentage content, and described raw material is pure Mg ingot, Mg-Cu master alloy, pure Al ingot, pure Mo, Al-Ni master alloy, Al-Ti master alloy, Al-Pr Master alloy, Mg-V master alloy, Mg-Sn master alloy, pure Be, Al-Sr master alloy, Al-Os master alloy, pure La, Al-Ho master alloy;

[0021] (2) Smelting: Add pure Mg ingots, pure Al ingots, pure Mo, pure Be, and pure La to the resistance furnace, then heat up the resistance furnace, and fill CO2 / SF6 mixed gas protection when the added metals melt quickly, When the temperature of the resist...

Embodiment 2

[0029] A multi-component heat-resistant magnesium alloy, containing: Al: 4.6%, Cu: 3.7%, Mo: 1.1%, Ni: 0.4%, Ti: 1.1%, Pr: 0.25%, V: 0.55%, Sn : 3.3%, Be: 1.5%, Sr: 3.5%, Os: 0.3%, La: 0.6%, Ho: 0.9%, and the balance is Mg.

[0030] The preparation method of the heat-resistant magnesium alloy comprises the following steps:

[0031] (1) Raw material preparation: raw material preparation is carried out according to weight percentage content, and described raw material is pure Mg ingot, Mg-Cu master alloy, pure Al ingot, pure Mo, Al-Ni master alloy, Al-Ti master alloy, Al-Pr Master alloy, Mg-V master alloy, Mg-Sn master alloy, pure Be, Al-Sr master alloy, Al-Os master alloy, pure La, Al-Ho master alloy;

[0032] (2) Smelting: Add pure Mg ingots, pure Al ingots, pure Mo, pure Be, and pure La to the resistance furnace, then heat up the resistance furnace, and fill CO2 / SF6 mixed gas protection when the added metals melt quickly, When the temperature of the resistance furnace rises...

Embodiment 3

[0040] A multi-component heat-resistant magnesium alloy, containing: Al: 5.2%, Cu: 4.2%, Mo: 1.7%, Ni: 0.7%, Ti: 1.2%, Pr: 0.45%, V: 0.75%, Sn : 4.3%, Be: 1.6%, Sr: 3.7%, Os: 0.5%, La: 0.7%, Ho: 1.0%, and the balance is Mg.

[0041] The preparation method of the heat-resistant magnesium alloy comprises the following steps:

[0042] (1) Raw material preparation: raw material preparation is carried out according to weight percentage content, and described raw material is pure Mg ingot, Mg-Cu master alloy, pure Al ingot, pure Mo, Al-Ni master alloy, Al-Ti master alloy, Al-Pr Master alloy, Mg-V master alloy, Mg-Sn master alloy, pure Be, Al-Sr master alloy, Al-Os master alloy, pure La, Al-Ho master alloy;

[0043] (2) Smelting: Add pure Mg ingots, pure Al ingots, pure Mo, pure Be, and pure La to the resistance furnace, then heat up the resistance furnace, and fill in CO2 / SF6 mixed gas protection when the added metals melt quickly, When the temperature of the resistance furnace ri...

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Abstract

A multi-component heat-resistant magnesium alloy provided by the present invention contains: Al: 4.1-5.2%, Cu: 3.2-4.2%, Mo: 0.5-1.7%, Ni: 0.1-0.7%, Ti: 1.0- 1.2%, Pr: 0.1‑0.45%, V: 0.34‑0.75%, Sn: 2.3‑4.3%, Be: 1.4‑1.6%, Sr: 3.3‑3.7%, Os: 0.1‑0.5%, La: 0.5‑0.7 %, Ho: 0.8-1.0%, and the balance is Mg; the invention also proposes a preparation method of the alloy, and the alloy has good mechanical properties and heat resistance.

Description

technical field [0001] The invention belongs to the field of heat-resistant magnesium alloy materials, in particular to a multi-element heat-resistant magnesium alloy and a preparation method thereof. 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. As a new type of light metal material, magnesium alloy has the smallest density (specific gravity), high specific strength, large specific elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloy, and resistance to organic matter and alkali. It has good corrosion performance and is the lightest metal structural material in industrial materials. It is used by automobile manufacturers to replace traditional cast iron to achieve the purpose of reducing the weight of the car body. However, the use of magnesium alloy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C23/00C22C1/03C22F1/06
Inventor 赵玉
Owner HAIMEN ZHONGDE ELECTRONICS DEV CO LTD