CN114507799A - Heat-resistant high-strength rare earth magnesium alloy material and preparation - Google Patents
Heat-resistant high-strength rare earth magnesium alloy material and preparation Download PDFInfo
- Publication number
- CN114507799A CN114507799A CN202210158637.8A CN202210158637A CN114507799A CN 114507799 A CN114507799 A CN 114507799A CN 202210158637 A CN202210158637 A CN 202210158637A CN 114507799 A CN114507799 A CN 114507799A
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- China
- Prior art keywords
- magnesium
- alloy
- percent
- rare earth
- gadolinium
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 21
- 239000000956 alloy Substances 0.000 title claims abstract description 21
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 16
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 19
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 17
- 239000011701 zinc Substances 0.000 claims abstract description 17
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 16
- 239000011777 magnesium Substances 0.000 claims abstract description 16
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 14
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 14
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 12
- 238000007670 refining Methods 0.000 claims description 11
- DFIYZNMDLLCTMX-UHFFFAOYSA-N gadolinium magnesium Chemical compound [Mg].[Gd] DFIYZNMDLLCTMX-UHFFFAOYSA-N 0.000 claims description 10
- MIOQWPPQVGUZFD-UHFFFAOYSA-N magnesium yttrium Chemical compound [Mg].[Y] MIOQWPPQVGUZFD-UHFFFAOYSA-N 0.000 claims description 10
- QRNPTSGPQSOPQK-UHFFFAOYSA-N magnesium zirconium Chemical compound [Mg].[Zr] QRNPTSGPQSOPQK-UHFFFAOYSA-N 0.000 claims description 10
- 229910000748 Gd alloy Inorganic materials 0.000 claims description 8
- 229910000946 Y alloy Inorganic materials 0.000 claims description 8
- 229910001093 Zr alloy Inorganic materials 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000005275 alloying Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 238000009749 continuous casting Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 238000005242 forging Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/06—Alloys based on magnesium with a rare earth metal as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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 rare earth magnesium alloy material alloy and a preparation method thereof. The alloy comprises the following chemical components in percentage by mass: 8.5-10% of gadolinium, 2.7-4% of yttrium, 1.5-2% of zinc, more than or equal to 0.3% of zirconium, and the balance of magnesium and trace impurity elements. According to the invention, the gadolinium, yttrium, zinc and zirconium elements are added to form the LPSO phase containing GdYZn, so that the normal-temperature mechanical capability and the high-temperature mechanical property of the magnesium alloy material can be improved, the content of the rare earth elements is higher, the material cost is higher, and the magnesium alloy is mainly used in the field of aerospace and military industry.
Description
Technical Field
The invention belongs to the field of magnesium-aluminum alloy manufacturing, and particularly relates to a rare earth magnesium alloy material with heat resistance and high strength and a preparation method thereof.
Background
With the gradual development of environmental pollution and green energy, the application of magnesium alloy as a light metal material with the most prospect in recent years in the fields of rail transit, intelligent manufacturing and military aviation is gradually increased and enlarged. Particularly, in recent years, the international situation is subtle, and the country increases the construction of military equipment and develops the integration of military and civilian, which is reflected in the requirements of high strength, high heat resistance and light weight of materials. In order to meet the increasing demands, the composite magnesium metal material with high heat resistance and high strength is urgent.
Disclosure of Invention
The invention provides a composite magnesium metal material with heat resistance and high strength.
In order to solve the problems, the invention provides a composite magnesium metal material with heat resistance and high strength and a preparation method thereof
A rare earth magnesium alloy is characterized in that: the alloy comprises the following chemical components in percentage by mass: 8.5-10% of gadolinium, 2.7-4% of yttrium, 1.5-2% of zinc, more than or equal to 0.3% of zirconium, and the balance of magnesium and trace impurity elements.
Further, the alloy comprises the following chemical components in percentage by mass: 8.5 percent of gadolinium, 2.7 percent of yttrium, 1.5 percent of zinc, 0.3 percent of zirconium, and the balance of magnesium and trace impurity elements.
Further, the alloy comprises the following chemical components in percentage by mass: 10 percent of gadolinium, 4 percent of yttrium, 2 percent of zinc, more than or equal to 0.3 percent of zirconium, and the balance of magnesium and trace impurity elements.
A preparation method of rare earth magnesium alloy comprises the following steps,
preparing raw materials with corresponding preparation amounts: pure magnesium ingots, pure zinc ingots, magnesium-gadolinium alloys, magnesium-yttrium alloys and magnesium-zirconium alloys, and baking and preheating for at least 1h before the furnace at the temperature of more than 150 ℃;
preheating a crucible to more than 450 ℃, spraying a bottom flux accounting for 1-3% of the total furnace charge, and putting a raw material magnesium ingot once to be melted;
heating the crucible to above 720 ℃, adding zinc ingots, alloying and stirring for 5-10 min, adding the magnesium-gadolinium alloy, the magnesium-yttrium alloy and the magnesium-zirconium alloy when the temperature is above 760 ℃, fully stirring and alloying, and manually stirring for 10-20 min.
When the temperature is 750-820 ℃, refining and stirring are carried out for 20-30 min, and the injected refining agent accounts for 3-8% of the total furnace charge.
Keeping the temperature at 750-820 ℃ for refining, sampling, testing, and standing after the components are qualified, wherein the standing time is 30-60 min, and then casting into a cast ingot which can be used for semi-continuous casting.
Furthermore, the grades of the magnesium-gadolinium alloy, the magnesium-yttrium alloy and the magnesium-zirconium alloy are Mg-30Gd and Mg-30Y, Mg-30 Zr.
Further, the bottom fusing agent is RJ2 which accounts for 2 percent of the total charge.
Further, the refining agent is RJ6 which accounts for 5 percent of the total charge.
The invention has the beneficial effects that: by adding gadolinium, yttrium, zinc and zirconium elements, the mechanical capacity of the composite material is improved, and the mechanical property at high temperature is further improved by matching metal elements.
Detailed Description
The invention is further illustrated by the following specific examples.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention aims to provide a heat-resistant high-strength rare earth magnesium alloy for the military field, which improves the mechanical capability and the mechanical property at high temperature of the material by adding gadolinium, yttrium, zinc and zirconium elements.
The invention relates to a rare earth magnesium alloy material alloy and a preparation method thereof. The alloy comprises the following chemical components in percentage by mass: 8.5 to 10 percent of gadolinium, 2.7 to 4 percent of yttrium, 1.5 to 2 percent of zinc, more than or equal to 0.3 percent of zirconium, and the balance of magnesium and trace impurity elements. The preferable chemical components of the alloy in percentage by mass are as follows: 8.5 percent of gadolinium, 2.7 percent of yttrium, 1.5 percent of zinc, 0.3 percent of zirconium, and the balance of magnesium and trace impurity elements.
The method comprises the following steps:
1. smelting and casting of the rare earth magnesium alloy:
(1) the proportioning calculation is carried out according to the material components provided by the invention, and corresponding raw materials are weighed: magnesium ingot, zinc ingot, magnesium gadolinium, magnesium yttrium and magnesium zirconium intermediate alloy, and baking and preheating for at least 1h before the furnace at the temperature of more than 150 ℃, wherein the brands of the magnesium gadolinium alloy, the magnesium yttrium alloy and the magnesium zirconium alloy are Mg-30Gd and Mg-30Y, Mg-30Zr, the Mg-30Gd represents that the gadolinium content in the magnesium gadolinium alloy is 30%, the Mg-30Y represents that the yttrium content in the magnesium yttrium alloy is 30%, and the Mg-30Zr represents that the zirconium content in the magnesium zirconium alloy is 30%,.
(2) Preheating the crucible to make it dark red, above 450 deg.C, adding bottom flux, and once adding raw material magnesium ingot to melt.
(3) Adding zinc ingot at above 720 ℃, alloying and stirring for 5-10 min, adding magnesium gadolinium, magnesium yttrium and magnesium zirconium intermediate alloy when the temperature is above 750 ℃, fully stirring and alloying, and manually stirring for 10-20 min.
(4) When the temperature is 750-820 ℃, refining and stirring for 20-30 min, and scattering a refining agent.
(5) And (3) after the components are sampled and tested to be qualified after refining at the temperature of 750-820 ℃, standing for 30-60 min, and then casting into a cast ingot which can be used for semi-continuous casting.
2. Deformation processing and mechanical property of rare earth magnesium alloy
(1) The rare earth magnesium alloy material is a semi-continuous casting bar billet
The treatment is carried out through homogenization heat treatment, and the heat treatment is carried out for 12 to 48 hours continuously at 400 to 550 ℃.
(2) And performing die forging forming on the treated bar blank by a 6000T forging press, and forging and pressing the bar blank into a round cake and a die forging.
(3) The mechanical properties of the patty material after forging were as follows, and the patty material was sampled and heat-treated by T6.
Table-forged round cake various mechanical properties
(wherein YGB15 represents the chemical composition of the alloy comprises, by mass, 8.5% of gadolinium, 2.7% of yttrium, 1.5% of zinc, 0.3% of zirconium, and the balance magnesium and trace impurity elements, the directions H, Z, G represent the transverse direction (vertical radius), the longitudinal direction (radial direction), and the height direction (thickness direction) of the forged round cake in three spatial directions, and two sets of data represent the transverse direction, the longitudinal direction, and the height direction, respectively, or represent one set of data.)
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (7)
1. A rare earth magnesium alloy is characterized in that: the alloy comprises the following chemical components in percentage by mass: 8.5-10% of gadolinium, 2.7-4% of yttrium, 1.5-2% of zinc, more than or equal to 0.3% of zirconium, and the balance of magnesium and trace impurity elements.
2. The rare earth magnesium alloy according to claim 1, wherein: the alloy comprises the following chemical components in percentage by mass: 8.5 percent of gadolinium, 2.7 percent of yttrium, 1.5 percent of zinc, 0.3 percent of zirconium, and the balance of magnesium and trace impurity elements.
3. The rare earth magnesium alloy according to claim 1, wherein: the alloy comprises the following chemical components in percentage by mass: 10 percent of gadolinium, 4 percent of yttrium, 2 percent of zinc, more than or equal to 0.3 percent of zirconium, and the balance of magnesium and trace impurity elements.
4. The preparation method of the rare earth magnesium alloy is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
preparing raw materials with corresponding preparation amounts: pure magnesium ingots, pure zinc ingots, magnesium-gadolinium alloys, magnesium-yttrium alloys and magnesium-zirconium alloys, and baking and preheating for at least 1h before the furnace at the temperature of more than 150 ℃;
preheating a crucible to more than 450 ℃, spraying a bottom flux accounting for 1-3% of the total furnace charge, and putting a raw material magnesium ingot once to be melted;
heating the crucible to above 720 ℃, adding zinc ingots, alloying and stirring for 5-10 min, adding the magnesium-gadolinium alloy, the magnesium-yttrium alloy and the magnesium-zirconium alloy when the temperature is above 760 ℃, fully stirring and alloying, and manually stirring for 10-20 min.
When the temperature is 750-820 ℃, refining and stirring are carried out for 20-30 min, and the injected refining agent accounts for 3-10% of the total furnace charge.
Keeping the temperature at 750-820 ℃ for refining, sampling, testing, and standing after the components are qualified, wherein the standing time is 30-60 min, and then casting into a cast ingot which can be used for semi-continuous casting.
5. The method for producing a rare earth-magnesium alloy according to claim 4, wherein: the grades of the magnesium-gadolinium alloy, the magnesium-yttrium alloy and the magnesium-zirconium alloy are Mg-30Gd and Mg-30Y, Mg-30 Zr.
6. The method for producing a rare earth-magnesium alloy according to claim 4, wherein: the bottom fusing agent is RJ2 accounting for 2 percent of the total charging material.
7. The method for producing a rare earth-magnesium alloy according to claim 4, wherein: the refining agent is RJ6 accounting for 5 percent of the total charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210158637.8A CN114507799A (en) | 2022-02-21 | 2022-02-21 | Heat-resistant high-strength rare earth magnesium alloy material and preparation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210158637.8A CN114507799A (en) | 2022-02-21 | 2022-02-21 | Heat-resistant high-strength rare earth magnesium alloy material and preparation |
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|---|---|
| CN114507799A true CN114507799A (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210158637.8A Pending CN114507799A (en) | 2022-02-21 | 2022-02-21 | Heat-resistant high-strength rare earth magnesium alloy material and preparation |
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|---|---|---|---|---|
| CN1804083A (en) * | 2006-01-23 | 2006-07-19 | 中南大学 | High-strength heat-resistant rare earth magnesium alloy |
| CN101914713A (en) * | 2010-07-07 | 2010-12-15 | 中南大学 | Oversized high-strength heatproof magnesium alloy ingot blank semicontinuous casting technique |
| CN102392166A (en) * | 2011-10-27 | 2012-03-28 | 哈尔滨工业大学 | Mg-Gd-Y-Zn-Zr-series alloy large ingot and preparation method thereof |
| CN102400071A (en) * | 2011-11-15 | 2012-04-04 | 中南大学 | Extrusion deformation technology for large-diameter high-strength heat resistant magnesium alloy pipes |
| CN102828133A (en) * | 2012-09-20 | 2012-12-19 | 中南大学 | Method for preparing ultrahigh strength high toughness magnesium alloy |
| CN103388095A (en) * | 2013-07-18 | 2013-11-13 | 上海交通大学 | Mg-Gd-Y-Zr magnesium alloy and heat treatment method of large-scale complex casting prepared from the Mg-Gd-Y-Zr magnesium alloy |
| CN103774069A (en) * | 2014-01-18 | 2014-05-07 | 中南大学 | Forging forming technology for large-size high-intensity and heat-resistant magnesium alloy thick plate |
| CN105525179A (en) * | 2015-12-21 | 2016-04-27 | 华北电力大学 | Preparation method for rare-earth magnesium alloy large-size high-strength forged piece |
| CN106756370A (en) * | 2016-12-10 | 2017-05-31 | 哈尔滨工业大学 | A kind of anti-flaming Mg Gd Y Zn Zr alloys of high-strength anticorrosion and preparation method thereof |
| CN110512129A (en) * | 2019-08-30 | 2019-11-29 | 中南大学 | A kind of forging torsion integrated technique preparing superelevation severe deformation magnesium alloy rod |
| CN113073244A (en) * | 2021-03-19 | 2021-07-06 | 中北大学 | High-strength and high-toughness rare earth heat-resistant magnesium alloy and preparation method thereof |
-
2022
- 2022-02-21 CN CN202210158637.8A patent/CN114507799A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804083A (en) * | 2006-01-23 | 2006-07-19 | 中南大学 | High-strength heat-resistant rare earth magnesium alloy |
| CN101914713A (en) * | 2010-07-07 | 2010-12-15 | 中南大学 | Oversized high-strength heatproof magnesium alloy ingot blank semicontinuous casting technique |
| CN102392166A (en) * | 2011-10-27 | 2012-03-28 | 哈尔滨工业大学 | Mg-Gd-Y-Zn-Zr-series alloy large ingot and preparation method thereof |
| CN102400071A (en) * | 2011-11-15 | 2012-04-04 | 中南大学 | Extrusion deformation technology for large-diameter high-strength heat resistant magnesium alloy pipes |
| CN102828133A (en) * | 2012-09-20 | 2012-12-19 | 中南大学 | Method for preparing ultrahigh strength high toughness magnesium alloy |
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| CN103774069A (en) * | 2014-01-18 | 2014-05-07 | 中南大学 | Forging forming technology for large-size high-intensity and heat-resistant magnesium alloy thick plate |
| CN105525179A (en) * | 2015-12-21 | 2016-04-27 | 华北电力大学 | Preparation method for rare-earth magnesium alloy large-size high-strength forged piece |
| CN106756370A (en) * | 2016-12-10 | 2017-05-31 | 哈尔滨工业大学 | A kind of anti-flaming Mg Gd Y Zn Zr alloys of high-strength anticorrosion and preparation method thereof |
| CN110512129A (en) * | 2019-08-30 | 2019-11-29 | 中南大学 | A kind of forging torsion integrated technique preparing superelevation severe deformation magnesium alloy rod |
| CN113073244A (en) * | 2021-03-19 | 2021-07-06 | 中北大学 | High-strength and high-toughness rare earth heat-resistant magnesium alloy and preparation method thereof |
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