CN104498794A - High-temperature-resistant magnesium alloy, and preparation method and application thereof - Google Patents

High-temperature-resistant magnesium alloy, and preparation method and application thereof Download PDF

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Publication number
CN104498794A
CN104498794A CN201410778640.5A CN201410778640A CN104498794A CN 104498794 A CN104498794 A CN 104498794A CN 201410778640 A CN201410778640 A CN 201410778640A CN 104498794 A CN104498794 A CN 104498794A
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Prior art keywords
magnesium alloy
amount
weight
temperature
parts
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CN201410778640.5A
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Chinese (zh)
Inventor
张建军
史沸涛
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M-UNION (WUHU) Co Ltd
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M-UNION (WUHU) Co Ltd
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Priority to CN201410778640.5A priority Critical patent/CN104498794A/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium
    • C22C23/02Alloys based on magnesium with aluminium as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium
    • C22C23/06Alloys based on magnesium with a rare earth metal as the next major constituent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses a high-temperature-resistant magnesium alloy, and a preparation method and application thereof. The preparation method comprises the following step: mixing and smelting magnesium, aluminum, yttrium, rhenium, gadolinium and cerium to obtain the high-temperature-resistant magnesium alloy. Relative to 100 parts by weight of magnesium, the magnesium alloy comprises the following components in parts by weight: 2-15 parts of aluminum, 0.1-5 parts of yttrium, 0.1-3 parts of rhenium, 0.01-0.5 part of gadolinium and 0.01-0.5 part of cerium. The magnesium, aluminum, yttrium, rhenium, gadolinium and cerium are mixed proportionally and then smelted, so that the smelted magnesium alloy material has favorable high temperature resistance; and thus, the magnesium alloy still has favorable creep resistance even at higher temperature in the actual use process, thereby greatly widening the application range.

Description

High-temperature-resistant magnesium alloy and preparation method and application thereof
Technical Field
The invention relates to the field of preparation of magnesium alloy, in particular to high-temperature-resistant magnesium alloy and a preparation method and application thereof.
Background
The magnesium alloy has wide application in daily production and life, and products prepared by adopting the magnesium alloy as a raw material have wide application. The magnesium alloy is often used as a raw material of mechanical equipment in the daily production process, and the magnesium alloy is often subjected to a higher temperature condition in the daily use process, so that the heat resistance of the magnesium alloy greatly influences the service life of the product.
Therefore, the present invention provides a high temperature resistant magnesium alloy with high temperature resistance and good creep resistance under high temperature conditions, and a preparation method thereof, which are problems to be solved by the present invention.
Disclosure of Invention
Aiming at the prior art, the invention aims to overcome the problem of poor high-temperature resistance of a magnesium alloy material in the prior art, thereby providing a high-temperature-resistant magnesium alloy with high temperature resistance and good creep resistance under a high-temperature condition and a preparation method thereof.
In order to achieve the above object, the present invention provides a method for preparing a high temperature resistant magnesium alloy, wherein the method comprises: mixing magnesium, aluminum, yttrium, rhenium, gadolinium and cerium, and then smelting to obtain a high-temperature-resistant magnesium alloy; wherein,
the aluminum is used in an amount of 2 to 15 parts by weight, the yttrium is used in an amount of 0.1 to 5 parts by weight, the rhenium is used in an amount of 0.1 to 3 parts by weight, the gadolinium is used in an amount of 0.01 to 0.5 part by weight, and the cerium is used in an amount of 0.01 to 0.5 part by weight, relative to 100 parts by weight of the magnesium.
The invention also provides the high-temperature-resistant magnesium alloy prepared by the preparation method.
The invention also provides an application of the high-temperature-resistant magnesium alloy.
According to the technical scheme, magnesium, aluminum, yttrium, rhenium, gadolinium and cerium are mixed according to a certain proportion and then smelted, so that the magnesium alloy material prepared after smelting has good high-temperature resistance, the creep resistance of the magnesium alloy material is good even at a high temperature in the actual use process, and the application range of the magnesium alloy material is greatly expanded.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The invention provides a preparation method of a high-temperature-resistant magnesium alloy, wherein the preparation method comprises the following steps: mixing magnesium, aluminum, yttrium, rhenium, gadolinium and cerium, and then smelting to obtain a high-temperature-resistant magnesium alloy; wherein,
the aluminum is used in an amount of 2 to 15 parts by weight, the yttrium is used in an amount of 0.1 to 5 parts by weight, the rhenium is used in an amount of 0.1 to 3 parts by weight, the gadolinium is used in an amount of 0.01 to 0.5 part by weight, and the cerium is used in an amount of 0.01 to 0.5 part by weight, relative to 100 parts by weight of the magnesium.
According to the design, magnesium, aluminum, yttrium, rhenium, gadolinium and cerium are mixed according to a certain proportion and then smelted, so that the magnesium alloy material prepared after smelting has good high-temperature resistance, the creep resistance of the magnesium alloy material is good even at a high temperature in the actual use process, and the application range of the magnesium alloy material is greatly expanded.
In order to make the prepared magnesium alloy material have better performance and better creep resistance under the environment with higher temperature, in a preferred embodiment of the invention, relative to 100 parts by weight of magnesium, the aluminum is used in an amount of 8-12 parts by weight, the yttrium is used in an amount of 0.5-2 parts by weight, the rhenium is used in an amount of 0.3-1 part by weight, the gadolinium is used in an amount of 0.03-0.1 part by weight, and the cerium is used in an amount of 0.03-0.1 part by weight.
The smelting process may be performed according to a smelting method conventionally used in the art, for example, raw materials may be put into a smelting furnace for smelting, the smelting temperature may not be limited as long as the raw materials are all molten, and of course, in order to ensure that the raw materials are completely molten, in a preferred embodiment of the present invention, the smelting temperature in the smelting process may be limited to not lower than 700 ℃.
In order to reduce the cost in the smelting process as much as possible and ensure better smelting effect, in a more preferred embodiment of the invention, the smelting temperature can be further limited to 750-850 ℃.
The magnesium, the aluminum, the yttrium, the rhenium, the gadolinium and the cerium may be conventionally used products, for example, in the form of blocks or powders, but in order to ensure better melting and to save as much melting time as possible, in a more preferred embodiment of the invention, the magnesium, the aluminum, the yttrium, the rhenium, the gadolinium and the cerium are powders having a particle size of not more than 0.5 mm.
In order to avoid as much as possible the occurrence of unwanted reactions in the smelting process, which lead to the production of other unwanted products, in a preferred embodiment of the invention the smelting process may also include the introduction of a protective gas into the smelting vessel.
The shielding gas may be of the type conventionally used in the art, for example, it may be an inert gas, and in a preferred embodiment of the invention, it may be selected to be nitrogen in order to reduce production costs.
The invention also provides the high-temperature-resistant magnesium alloy prepared by the preparation method.
The invention also provides an application of the high-temperature-resistant magnesium alloy.
The present invention will be described in detail below by way of examples. In the following examples, the magnesium, aluminum, yttrium, rhenium, gadolinium and cerium are conventional commercial products having a particle size of 0.5 mm.
Example 1
100g of magnesium, 8g of aluminum, 0.5g of yttrium, 0.3g of rhenium, 0.03g of gadolinium and 0.03g of cerium are put into a smelting furnace filled with nitrogen, mixed and smelted at the temperature of 750 ℃ to obtain the high-temperature resistant magnesium alloy A1.
Example 2
100g of magnesium, 12g of aluminum, 2g of yttrium, 1g of rhenium, 0.1g of gadolinium and 0.1g of cerium are placed in a nitrogen-filled smelting furnace, mixed and smelted at the temperature of 850 ℃ to obtain the high-temperature-resistant magnesium alloy A2.
Example 3
100g of magnesium, 10g of aluminum, 1g of yttrium, 0.5g of rhenium, 0.05g of gadolinium and 0.05g of cerium are placed in a nitrogen-filled smelting furnace, mixed and smelted at the temperature of 800 ℃ to obtain the high-temperature-resistant magnesium alloy A3.
Example 4
The preparation was carried out in accordance with the preparation method of example 1 except that the aluminum was used in an amount of 2g, the yttrium was used in an amount of 0.1g, the rhenium was used in an amount of 0.1g, the gadolinium was used in an amount of 0.01g, and the cerium was used in an amount of 0.01g, to obtain a high temperature resistant magnesium alloy A4.
Example 5
The preparation was carried out in accordance with the preparation method of example 2 except that the aluminum was used in an amount of 15g, the yttrium was used in an amount of 5g, the rhenium was used in an amount of 3g, the gadolinium was used in an amount of 0.5g, and the cerium was used in an amount of 0.5g, to obtain a high temperature resistant magnesium alloy A5.
Comparative example 1
The preparation was carried out in accordance with the preparation method of example 3 except that the aluminum was used in an amount of 1g, the yttrium was used in an amount of 0.02g, the rhenium was used in an amount of 0.02g, the gadolinium was used in an amount of 0.005g, and the cerium was used in an amount of 0.005g, to obtain a high temperature resistant magnesium alloy D1.
Comparative example 2
The preparation was carried out in accordance with the preparation method of example 3 except that the aluminum was used in an amount of 30g, the yttrium was used in an amount of 10g, the rhenium was used in an amount of 5g, the gadolinium was used in an amount of 2g, and the cerium was used in an amount of 2g, to obtain a high temperature resistant magnesium alloy D2.
Comparative example 3
A commercially available magnesium alloy D3 manufactured by Shanghai Hensheng metals Co., Ltd under the trade designation AZ 91D.
Test example
The above A1-A5 and D1-D3 were examined for tensile strength and elongation at 200 ℃ in accordance with GB1499.1 and GB1499.2, and the results are shown in Table 1.
TABLE 1
Numbering Tensile Strength (MPa) Elongation (%)
A1 236 32.6
A2 214 33.5
A3 225 32.4
A4 153 23.5
A5 165 22.6
D1 52 5.6
D2 63 7.9
D3 95 15.5
As can be seen from table 1, the magnesium alloy prepared in the range of the present invention has better tensile strength and elongation at high temperature than those of the conventional commercial products, but the magnesium alloy prepared in the range outside the range of the present invention has poor tensile strength and elongation at high temperature, and the magnesium alloy prepared in the preferred range of the present invention has better tensile strength and elongation at high temperature, more excellent high temperature resistance, wider application range, and greatly prolonged service life.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (9)

1. The preparation method of the high-temperature-resistant magnesium alloy is characterized by comprising the following steps of: mixing magnesium, aluminum, yttrium, rhenium, gadolinium and cerium, and then smelting to obtain a high-temperature-resistant magnesium alloy; wherein,
the aluminum is used in an amount of 2 to 15 parts by weight, the yttrium is used in an amount of 0.1 to 5 parts by weight, the rhenium is used in an amount of 0.1 to 3 parts by weight, the gadolinium is used in an amount of 0.01 to 0.5 part by weight, and the cerium is used in an amount of 0.01 to 0.5 part by weight, relative to 100 parts by weight of the magnesium.
2. The production method according to claim 1, wherein the aluminum is used in an amount of 8 to 12 parts by weight, the yttrium is used in an amount of 0.5 to 2 parts by weight, the rhenium is used in an amount of 0.3 to 1 part by weight, the gadolinium is used in an amount of 0.03 to 0.1 part by weight, and the cerium is used in an amount of 0.03 to 0.1 part by weight, relative to 100 parts by weight of the magnesium.
3. The production method according to claim 1 or 2, wherein a melting temperature in a melting process is not lower than 700 ℃.
4. The preparation method as claimed in claim 3, wherein the melting temperature is 750-850 ℃.
5. The production method according to claim 1 or 2, wherein the magnesium, the aluminum, the yttrium, the rhenium, the gadolinium and the cerium are powders having a particle size of not more than 0.5 mm.
6. The method of claim 1 or claim 2, wherein the smelting process further comprises passing a protective gas into the smelting vessel.
7. The production method according to claim 6, wherein the shielding gas is nitrogen.
8. A high temperature resistant magnesium alloy prepared according to the preparation method of any one of claims 1 to 7.
9. Use of the high temperature resistant magnesium alloy according to claim 8.
CN201410778640.5A 2014-12-15 2014-12-15 High-temperature-resistant magnesium alloy, and preparation method and application thereof Pending CN104498794A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101760683A (en) * 2008-12-24 2010-06-30 沈阳铸造研究所 High-strength casting magnesium alloy and melting method thereof
JP2011195929A (en) * 2010-03-23 2011-10-06 Kumamoto Univ Magnesium alloy and method for producing the same
CN102230116A (en) * 2011-06-23 2011-11-02 江汉大学 High-hardness cast magnesium alloy
CN102534329A (en) * 2012-03-29 2012-07-04 成都青元泛镁科技有限公司 Preparation method for magnesium alloy with high strength and large plasticity
CN102618762A (en) * 2012-04-13 2012-08-01 江汉大学 Heat-resisting magnesium alloy
CN102634710A (en) * 2012-05-07 2012-08-15 东莞市闻誉实业有限公司 Al-Zn-Mg alloy and preparation method thereof
CN103074530A (en) * 2012-09-18 2013-05-01 南昌大学 Preparation method of high-strength heat-resistant magnesium alloy
CN103343271A (en) * 2013-07-08 2013-10-09 中南大学 Light and pressure-proof fast-decomposed cast magnesium alloy

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101760683A (en) * 2008-12-24 2010-06-30 沈阳铸造研究所 High-strength casting magnesium alloy and melting method thereof
JP2011195929A (en) * 2010-03-23 2011-10-06 Kumamoto Univ Magnesium alloy and method for producing the same
CN102230116A (en) * 2011-06-23 2011-11-02 江汉大学 High-hardness cast magnesium alloy
CN102534329A (en) * 2012-03-29 2012-07-04 成都青元泛镁科技有限公司 Preparation method for magnesium alloy with high strength and large plasticity
CN102618762A (en) * 2012-04-13 2012-08-01 江汉大学 Heat-resisting magnesium alloy
CN102634710A (en) * 2012-05-07 2012-08-15 东莞市闻誉实业有限公司 Al-Zn-Mg alloy and preparation method thereof
CN103074530A (en) * 2012-09-18 2013-05-01 南昌大学 Preparation method of high-strength heat-resistant magnesium alloy
CN103343271A (en) * 2013-07-08 2013-10-09 中南大学 Light and pressure-proof fast-decomposed cast magnesium alloy

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Application publication date: 20150408