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WO2021088611A1 - Alliage terre rare-magnésium à déformation plastique élevée et son procédé de préparation - Google Patents

Alliage terre rare-magnésium à déformation plastique élevée et son procédé de préparation Download PDF

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Publication number
WO2021088611A1
WO2021088611A1 PCT/CN2020/121106 CN2020121106W WO2021088611A1 WO 2021088611 A1 WO2021088611 A1 WO 2021088611A1 CN 2020121106 W CN2020121106 W CN 2020121106W WO 2021088611 A1 WO2021088611 A1 WO 2021088611A1
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rare earth
magnesium alloy
magnesium
alloy
plastic deformation
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Chinese (zh)
Inventor
房大庆
张晓茹
宰伟
李苏植
丁向东
孙军
杨军
刘鹏
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Xian Jiaotong University
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Xian Jiaotong University
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/002—Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
    • 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
    • C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
    • 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
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon

Definitions

  • the invention belongs to the technical field of non-ferrous metal materials, and specifically relates to a high-plastic deformation rare earth magnesium alloy and a preparation method thereof.
  • magnesium alloy as a new type of lightweight structural environmentally friendly material has attracted more and more attention from experts, scholars and major companies.
  • Magnesium alloys have low density, high specific strength and specific stiffness, and excellent functional properties (such as thermal conductivity and shock absorption).
  • High-plasticity magnesium alloy structural parts are used in mountain bikes, automobiles, airplanes and high-speed rails, which can delay plastic loss It is stable, avoiding the instantaneous fracture of parts and causing casualties or sudden accidents, which can greatly improve the comfort and safety of personnel.
  • the current magnesium alloys on the market generally have the problems of less slip system and low plasticity, which often limits their wide use.
  • the purpose of the present invention is to provide a highly plastic deformable rare earth magnesium alloy and a preparation method thereof.
  • the magnesium alloy can efficiently exert the strain coordination effect of the alloy during the plastic deformation process and achieve the characteristics of high plasticity.
  • the magnesium alloy obtained by the preparation method of the magnesium alloy has a high yield, good processing and formability, easy to realize industrialization, and can be widely used in non-load-bearing structural parts in transportation tools such as mountain bikes, automobiles, airplanes, and high-speed rails.
  • the invention discloses a high-plastic deformation rare earth magnesium alloy.
  • the raw material composition and weight percentage content of the magnesium alloy are as follows:
  • Rare earth elements 2.7-3.8%, Zn: 0.2-3%, Mn: 0.5-1.0%, the balance is Mg.
  • the rare earth element includes:
  • the weight percentage content of Y in the magnesium alloy is 2.2-2.8%, and the weight percentage content of Ce in the magnesium alloy is 0.5-1.0%.
  • the invention discloses a method for preparing the above-mentioned high plastic deformation rare earth magnesium alloy, which comprises the following steps:
  • Step 1 Take magnesium ingots, Zn ingots, magnesium rare earth master alloys and MnCl 2 particles as raw materials, weigh and prepare materials according to mass percentage;
  • Step 2 Preheat and dry the magnesium ingot in Step 1, and then heat and melt the magnesium ingot to form a magnesium liquid. Add the preheated Zn ingot, magnesium rare earth intermediate alloy and MnCl 2 particles to the magnesium liquid in sequence, and add them while stirring Refining agent is smelted, after removing slag, it is cast by semi-continuous casting process to obtain ingot
  • Step 3 Peel the surface of the ingot obtained in Step 2, homogenization treatment at 400° C. for 10 hours, and then extrude to obtain a highly plastic deformation rare earth magnesium alloy.
  • the mass percentage in the step one is:
  • Rare earth elements 2.7-3.8%, Zn: 0.2-3%, Mn: 0.5-1.0%, the balance is Mg.
  • the magnesium rare earth master alloy in step one is a combination of Mg-25Y master alloy and Mg-20Ce master alloy.
  • the weight percentage content of Y in the magnesium alloy in the magnesium rare earth master alloy is 2.2-2.8%, and the weight percentage content of Ce in the magnesium alloy is 0.5-1.0%.
  • the temperature of the smelting process in step 2 is controlled at 650 to 720°C, and the temperature is maintained for 20 to 30 minutes.
  • the extrusion temperature of the extrusion process in step 3 is controlled at 350-370°C, the extrusion speed is 15-20 mm/s, and the extrusion ratio is 10-12.
  • the content of magnesium in the magnesium ingot is greater than 99.5% by weight, and the content of Zn in the Zn ingot is greater than 99.5% by weight.
  • the present invention has the following beneficial effects:
  • the invention discloses a high plastic deformation rare earth magnesium alloy.
  • the magnesium alloy adopts a Mg-RE-Zn series alloy formula, and adjusts the ratio of rare earth element Y and Zn element by mixing relatively inexpensive heavy rare earth element Y and light rare earth element Ce. Ratio, a deformed rare earth magnesium alloy with high strength and high plasticity is obtained; on the one hand, the addition of trace Mn element can remove the harmful impurity element Fe, on the other hand, it can refine the grains.
  • Y as a kind of heavy rare earth element, has a smaller atomic radius and a larger solid solubility in Mg, and it can be solidified. Soluble in Mg matrix to reduce the c/a axis ratio in the magnesium crystal structure, thereby reducing the critical shear stress of other slip systems, promoting the activation of more slip systems in the close-packed hexagonal structure, and improving plasticity; Ce element The addition of C can improve the grain orientation of the alloy, weaken the texture of the alloy, and make the alloy obtain greater plasticity.
  • the solid solubility of Ce element in the Mg matrix is small, and it and undissolved Y can form MgRE phase with Mg and Zn. Or the Mg-Zn-RE phase promotes the occurrence of dynamic recrystallization through the particle excitation nucleation mechanism during the deformation process, which is beneficial to obtain a complete dynamic recrystallization structure.
  • the grain size of magnesium alloy is in the range of 7.5-8.5 ⁇ m, and these grains have free grain orientation, which can effectively exert the strain coordination effect of the alloy during the plastic deformation process. The characteristics of high plasticity.
  • the invention also discloses a method for preparing a highly plastic deformable rare earth magnesium alloy.
  • the method adopts reasonable heating and melting, semi-continuous casting, homogenization treatment and extrusion processing processes, and complete dynamic recrystallization occurs during the deformation process to obtain uniformity.
  • the fine equiaxed crystal structure, the extrusion temperature is set to 350°C-370°C, can provide higher activation energy for the dynamic recrystallization process, and the appropriate extrusion ratio and extrusion speed are helpful for the crushing and crushing of crystal grains.
  • the occurrence of recrystallization results in a series of highly plastic deformable rare earth magnesium alloys with an elongation of over 30%.
  • Figure 1a is a metallographic diagram of a magnesium alloy in Example 1;
  • Figure 1b is a metallographic diagram of the magnesium alloy in Example 2;
  • Figure 1c is a metallographic diagram of Example 3 magnesium alloy
  • Figure 1d is a metallographic diagram of a comparative example magnesium alloy
  • Figure 1e is a metallographic diagram of a comparative example of two magnesium alloys
  • Figure 2a is a reverse pole diagram of a magnesium alloy in Example 1;
  • Figure 2b is a reverse pole diagram of the magnesium alloy in Example 2;
  • Figure 2c is a reverse pole diagram of the magnesium alloy in Example 3.
  • Figure 2d is a reverse pole diagram of a magnesium alloy in Comparative Example 1;
  • Figure 2e is an inverse pole diagram of a comparative example of two magnesium alloys
  • Fig. 3 is a test curve of tensile properties of magnesium alloys of Examples and Comparative Examples.
  • composition of the raw material of the refining agent and its weight percentage content are: 55%-60% KCl, 2%-5% CaF 2 , the rest is BaCl 2 , the amount of refining agent added is 75 per kg of raw material -125g.
  • This embodiment provides a highly plastic deformable rare earth magnesium alloy.
  • the raw material composition and weight percentage content are: rare earth elements: 2.7%, Zn: 0.2%, Mn: 0.5%, and the balance is Mg.
  • the rare earth elements include Y and Ce, wherein the weight percentage content of Y in the magnesium alloy is 2.2%, and the weight percentage content of Ce in the magnesium alloy is 0.5%.
  • the preparation method of the high plastic deformation rare earth magnesium alloy includes the following steps:
  • Step 1 Use pure magnesium ingot (99.5wt% or more), pure Zn ingot (99.5wt% or more), Mg-25Y master alloy (that is, the composition content of the master alloy is: 25wt% Y, the balance is Mg) and Mg- 20Ce master alloy and MnCl 2 particles as raw materials, weigh and prepare the materials according to the mass percentages of Y 2.2wt%, Ce 0.5wt%, Zn 0.2wt%, Mn 0.5wt%, and the balance Mg;
  • Step 2 Preheat and dry the pure magnesium ingots in step 1 at 180°C, then heat the pure magnesium ingots in a crucible in a resistance furnace to 650°C and gradually melt them. After the magnesium ingots are completely melted, a magnesium liquid will be formed.
  • the pure Zn ingot, Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles preheated at 180°C are added to the magnesium liquid for smelting, and the refining agent is added for smelting while stirring.
  • the smelting temperature is controlled at 720°C and kept for 30 minutes. , After removing the slag, use a semi-continuous casting process to cast an ingot;
  • Step 3 Peel the surface of the ingot obtained in Step 2, homogenize at 400°C and 10h, and then extrude on a 350T extruder.
  • the extrusion temperature is 350°C and the extrusion speed is 15mm/s. The ratio is 10, and a highly plastic deformation rare earth magnesium alloy is obtained.
  • the metallographic diagram of the highly plastic deformable rare earth magnesium alloy obtained in this example is shown in Figure 1a, the grain size is 8.1 ⁇ m, and the inverse pole diagram of the magnesium alloy obtained by EBSD characterization is shown in Figure 2a, and the texture base area density is 2.6.
  • the MTS810 mechanical testing system is used for tensile performance testing.
  • the elongation rate of the magnesium alloy is 34%, as shown in Figure 2.
  • This embodiment provides a high plastic deformation rare earth magnesium alloy.
  • the raw material composition and weight percentage content are: rare earth element: 3.2%, Zn: 1.5%, Mn: 0.6%, and the balance is Mg.
  • the rare earth elements include Y and Ce, wherein the weight percentage content of Y in the magnesium alloy is 2.5%, and the weight percentage content of Ce in the magnesium alloy is 0.8%.
  • the preparation method of the high plastic deformation rare earth magnesium alloy includes the following steps:
  • Step 1 Use pure magnesium ingot (99.5wt% or more), pure Zn ingot (99.5wt% or more), Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles as raw materials, according to Y 2.5wt%, Ce 0.8wt %, Zn 1.5wt%, Mn 0.6wt%, and the balance is the weight percentage of Mg for weighing and preparing materials;
  • Step 2 Preheat and dry the pure magnesium ingots in step one at 230°C, then heat the pure magnesium ingots in a crucible in a resistance furnace to 680°C and gradually melt them, and form magnesium liquid after the magnesium ingots are completely melted.
  • the pure Zn ingots, Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles preheated at 230°C are added to the magnesium liquid for smelting, and the refining agent is added while stirring.
  • the smelting temperature is 700°C and the temperature is kept for 25min. After the slag, a semi-continuous casting process is used to cast an ingot;
  • Step 3 Peel the surface of the ingot obtained in Step 2, homogenize at 400°C and 10h, and extrude on a 350T extruder.
  • the extrusion temperature is controlled at 350°C
  • the extrusion speed is 18mm/s
  • the extrusion speed is 18mm/s.
  • the pressure ratio is 11, and a high plastic deformation rare earth magnesium alloy is obtained.
  • the metallographic diagram of the highly plastic deformable rare earth magnesium alloy obtained in this example is shown in Figure 1b, the grain size is 7.6 ⁇ m, and the inverse pole diagram of the magnesium alloy obtained by EBSD characterization is shown in Figure 2b, and the texture base area density is 3.4.
  • the MTS810 mechanical testing system is used for tensile performance testing, and the elongation rate of the magnesium alloy is 32.5%, as shown in Figure 2.
  • This embodiment provides a high plastic deformation rare earth magnesium alloy.
  • the raw material composition and weight percentage content are: rare earth element: 3.8%, Zn: 3%, Mn: 1.0%, and the balance is Mg.
  • the rare earth elements include Y and Ce, wherein the weight percentage content of Y in the magnesium alloy is 2.8%, and the weight percentage content of Ce in the magnesium alloy is 1.0%.
  • the preparation method of the high plastic deformation rare earth magnesium alloy includes the following steps:
  • Step 1 Use pure magnesium ingot (99.5wt% or more), pure Zn ingot (99.5wt% or more), Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles as raw materials, according to Y 2.8wt%, Ce 1.0wt %, Zn 3.0wt%, Mn 1.0wt%, and the balance is the weight percentage of Mg for weighing and preparing.
  • Step 2 Preheat and dry the pure magnesium ingot in step one at 230°C, then heat the pure magnesium ingot in a crucible in a resistance furnace to 680°C and gradually melt it.
  • the magnesium ingot When the magnesium ingot is completely melted, it will form a magnesium liquid
  • the pure Zn ingots, Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles preheated at 230°C are added to the magnesium liquid for smelting.
  • the refining agent is added while stirring.
  • the smelting temperature is 650°C and the temperature is kept for 20min. After the slag, a semi-continuous casting process is used to cast an ingot;
  • Step 3 Peel the surface of the ingot obtained in Step 2, homogenize it at 400°C and 10h, then extrude it on a 350T extruder.
  • the extrusion temperature is controlled at 350°C
  • the extrusion speed is 20mm/s
  • the extrusion speed is 20mm/s.
  • the pressure ratio is 12, and a high plastic deformation rare earth magnesium alloy is obtained.
  • the metallographic diagram of the highly plastic deformable rare earth magnesium alloy obtained in this example is shown in Figure 1c, the grain size is 8.0 ⁇ m, and the inverse pole diagram of the magnesium alloy obtained by EBSD characterization is shown in Figure 2c, and the texture base surface density is 2.9.
  • the MTS810 mechanical testing system is used to test the tensile properties.
  • the elongation rate of the magnesium alloy is 31%, as shown in Figure 2.
  • Comparative Example 1 provides a highly plastic deformable rare earth magnesium alloy.
  • the raw material composition and weight percentage content are: rare earth element: 2.5%, Zn: 4.6%, Mn: 0.6%, and the balance is Mg.
  • the rare earth elements include Y and Ce, wherein the weight percentage content of Y in the magnesium alloy is 2.5%, and the weight percentage content of Ce in the magnesium alloy is 1.0%.
  • the preparation method of the high plastic deformation rare earth magnesium alloy includes the following steps:
  • Step 1 Use pure magnesium ingot (99.5wt% or more), pure Zn ingot (99.5wt% or more), Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles as raw materials, according to Y 2.5wt%, Ce 1.0wt %, Zn 4.6wt%, Mn 0.6wt%, and the balance is the weight percentage of Mg for weighing and preparing materials;
  • Step 2 Preheat and dry the pure magnesium ingots in step 1 at 180°C, then heat the pure magnesium ingots in a crucible in a resistance furnace to 650°C and gradually melt them. After the magnesium ingots are completely melted, a magnesium liquid will be formed.
  • the pure Zn ingots, Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles preheated at 180°C are added to the magnesium liquid for smelting, and the refining agent is added while stirring.
  • the smelting temperature is 700°C, and the temperature is kept for 25min. After the slag, a semi-continuous casting process is used to cast an ingot;
  • Step 3 After peeling and homogenizing the surface of the ingot obtained in Step 2, it is extruded on a 350T extruder.
  • the extrusion temperature is controlled at 350°C, the extrusion speed is 18mm/s, and the extrusion ratio is 11 to obtain magnesium alloy.
  • the metallographic diagram of the magnesium alloy obtained in this comparative example is shown in Figure 1d, the grain size is 5.6 ⁇ m, and the inverse pole diagram of the magnesium alloy obtained by EBSD characterization is shown in Figure 2d.
  • the texture basal area density is 5.8, using MTS810
  • the tensile performance test was carried out by the mechanical testing system, and the elongation rate of the magnesium alloy was 24.2%, as shown in Figure 2.
  • Comparative Example 2 provides a highly plastic deformable rare earth magnesium alloy.
  • the raw material composition and weight percentage content are: rare earth element: 3.8%, Zn: 3.0%, Mn: 1.0%, and the balance is Mg.
  • the rare earth elements include Y and Ce, wherein the weight percentage content of Y in the magnesium alloy is 2.8%, and the weight percentage content of Ce in the magnesium alloy is 1.0%.
  • the preparation method of the high plastic deformation rare earth magnesium alloy includes the following steps:
  • Step 1 Use pure magnesium ingot (99.5wt% or more), pure Zn ingot (99.5wt% or more), Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles as raw materials, according to Y 2.8wt%, Ce 1.0wt %, Zn 3.0wt%, Mn 1.0wt%, and the balance is the weight percentage of Mg for weighing and preparing.
  • Step 2 Preheat and dry the pure magnesium ingots in step one at 230°C, then heat the pure magnesium ingots in a crucible in a resistance furnace to 680°C and gradually melt them, and form magnesium liquid after the magnesium ingots are completely melted.
  • the pure Zn ingots, Mg-25Y master alloy, Mg-20Ce master alloy and MnCl 2 particles preheated at 230°C are added to the magnesium liquid for smelting.
  • the refining agent is added while stirring.
  • the smelting temperature is 650°C and the temperature is kept for 20min. After the slag, a semi-continuous casting process is used to cast an ingot;
  • Step 3 The surface of the ingot obtained in step 2 is peeled and homogenized, and then extruded on a 350T extruder.
  • the extrusion temperature is controlled at 350°C, the extrusion speed is 15mm/s, and the extrusion ratio is 16, to obtain magnesium alloy.
  • the metallographic diagram of the magnesium alloy obtained in this comparative example is shown in Figure 1e, the grain size is 5.9 ⁇ m, and the inverse pole diagram of the magnesium alloy obtained by EBSD characterization is shown in Figure 2e.
  • the texture basal area density is 7.6, using MTS810
  • the tensile performance test was carried out by the mechanical testing system, and the elongation rate of the magnesium alloy was 21.5%, as shown in Figure 2.
  • Table 1 The main chemical components and preparation parameters of the magnesium alloy of the embodiment
  • Example 2 the magnesium alloy texture base surface density obtained in Example 2 is lower, indicating that the orientation of the crystal grains is more free, which is beneficial to improve the plastic deformation ability, and the elongation rate is also higher, reaching 32.5%.
  • Comparative Example 1 has the same extrusion ratio and different composition ratio range.
  • a high content of Zn is added, more Zn will combine with rare earth elements Y and Ce to form compounds, reducing the content of heavy rare earth Y
  • the solid solubility in Mg also weakens the optimization effect of Ce element on the texture, and the plasticity is low.
  • the Zn content is within the scope of the invention, while the Zn element plays a strengthening role, the greater content of the rare earth elements Y and Ce can play their respective effects of improving plasticity.
  • Example 3 when the extrusion process is changed, the magnesium alloy obtained in Example 3 has a smaller texture basal surface density and more free grain orientation, which is more beneficial to improve the inter-grain during the deformation process.
  • the plastic coordination ability which improves the plastic elongation to 31%.

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Abstract

L'invention concerne un alliage terre rare-magnésium à déformation plastique élevée et son procédé de préparation. La teneur de l'alliage de magnésium, en pourcentage en poids, est : en élément des terres rares : de 2,7 à 3,8 %, en Zn : de 0,2 à 3 %, et en Mn : de 0,5 à 1,0 %, le complément étant constitué de Mg. La grosseur des grains de l'alliage de magnésium est comprise dans la plage de 7,5 à 8,5 μm, et lesdits grains ont une orientation libre des grains. L'alliage présente une texture lâche, et l'effet de coordination des déformations de l'alliage peut se manifester efficacement dans un processus de déformation plastique de sorte à atteindre la caractéristique de déformation plastique élevée. Un procédé de préparation de l'alliage de magnésium décrit fait appel à un traitement acceptable de chauffage-fusion, de coulée semi-continue, d'homogénéisation et d'extrusion. Pendant le processus de déformation, une recristallisation dynamique complète se produit pour obtenir une structure cristalline équiaxe fine et uniforme, et un alliage terre rare-magnésium à déformation plastique élevée et à allongement de 31 % à 34 % est obtenu. Le rendement de l'alliage de magnésium décrit est élevé, son aptitude à la mise en œuvre et au moulage est bonne et une industrialisation est aisément réalisée. De plus, l'alliage terre rare-magnésium à déformation plastique élevée selon la présente invention peut s'appliquer largement aux pièces non portantes de véhicules tels que des V.T.T., des automobiles, des avions et des trains à grande vitesse.
PCT/CN2020/121106 2019-11-07 2020-10-15 Alliage terre rare-magnésium à déformation plastique élevée et son procédé de préparation Ceased WO2021088611A1 (fr)

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CN110699562A (zh) * 2019-11-07 2020-01-17 西安交通大学 一种高塑性变形稀土镁合金及其制备方法
CN111304471B (zh) * 2020-02-18 2021-07-30 太原理工大学 一种低合金化高强塑性镁合金材料的制备方法
CN112609114B (zh) * 2020-11-27 2021-11-30 鼎泰(江苏)轻合金有限公司 一种镁合金及其制备方法和应用
CN117431445A (zh) * 2023-10-26 2024-01-23 重庆大学 一种高强度低成本镁合金棒材的制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017035072A1 (fr) * 2015-08-21 2017-03-02 University Of Pittsburgh-Of The Commonwealth System Of Higher Education Dispositifs d'implant dégradable à base de magnésium pour fixation osseuse
CN110699562A (zh) * 2019-11-07 2020-01-17 西安交通大学 一种高塑性变形稀土镁合金及其制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2892449B2 (ja) * 1990-07-05 1999-05-17 住友金属鉱山株式会社 流電陽極用マグネシウム合金
KR100671195B1 (ko) * 2005-03-08 2007-01-25 주식회사 지알로이테크놀로지 미시메탈이 첨가된 고온 구조용 마그네슘 합금
CN101831581B (zh) * 2010-05-22 2012-07-04 山西华天辰贸易有限责任公司 高强高韧稀土镁合金
CN102226244B (zh) * 2011-06-07 2012-11-28 重庆大学 一种高强度镁-锌-锰-钇镁合金材料
CN106521278A (zh) * 2016-12-29 2017-03-22 湘潭大学 一种高强度镁‑锌‑锰‑钇‑铈镁合金及其制备方法
CN106756366B (zh) * 2017-01-23 2018-05-08 重庆大学 一种高强度高塑性镁锌锰钇合金的制备方法
KR102155934B1 (ko) * 2018-02-14 2020-09-17 서울대학교산학협력단 마그네슘 합금 판재 및 이의 제조방법

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017035072A1 (fr) * 2015-08-21 2017-03-02 University Of Pittsburgh-Of The Commonwealth System Of Higher Education Dispositifs d'implant dégradable à base de magnésium pour fixation osseuse
CN110699562A (zh) * 2019-11-07 2020-01-17 西安交通大学 一种高塑性变形稀土镁合金及其制备方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PARK SUNG HYUK; YOU BONG SUN; MISHRA RAJA K.; SACHDEV ANIL K.: "Effects of extrusion parameters on the microstructure and mechanical properties of Mg–Zn–(Mn)–Ce/Gd alloys", MATERIALS SCIENCE & ENGINEERING A, vol. 598, 26 March 2014 (2014-03-26), pages 396 - 406, XP028661854, ISSN: 0921-5093, DOI: 10.1016/j.msea.2014.01.051 *
TAHREEN N., ZHANG D.F., PAN F.S., JIANG X.Q., LI C., LI D.Y., CHEN D.L.: "Influence of yttrium content on phase formation and strain hardening behavior of Mg-Zn-Mn magnesium alloy", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 615, 5 December 2014 (2014-12-05), pages 424 - 432, XP055811361, ISSN: 0925-8388, DOI: 10.1016/j.jallcom.2014.06.211 *

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