CN102899545A - Rare earth magnesium alloy and preparation method thereof - Google Patents
Rare earth magnesium alloy and preparation method thereof Download PDFInfo
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- CN102899545A CN102899545A CN2012103952892A CN201210395289A CN102899545A CN 102899545 A CN102899545 A CN 102899545A CN 2012103952892 A CN2012103952892 A CN 2012103952892A CN 201210395289 A CN201210395289 A CN 201210395289A CN 102899545 A CN102899545 A CN 102899545A
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Abstract
The invention discloses a rare earth magnesium alloy. The rare earth magnesium alloy comprises the following components in percentage by weight: 8-9.9 percent of aluminum, 0.3-1 percent of zinc, 0-0.2 percent of strontium, 0-0.2 percent of barium, 0-0.2 percent of calcium, 0.05-0.5 percent of manganese, 0-0.1 percent of titanium, 0.0001-0.0015 percent of beryllium, 0-0.8 percent of light rare earth, 0-0.5 percent of heavy rare earth, and the balance of manganese and inevitable impurities. The invention also discloses a method for preparing the rare earth magnesium alloy. The method comprises the following steps of: (1), preparation of ingredients; (2) preheating of ingredients; (3) melting; (4) alloying; (5) micro-alloying; (6) gas refining; (7) impurity removal; (8) analysis of components; (9) fracture surface examination; and (10) pouring. According to the rare earth magnesium alloy, a die-casting magnesium alloy nozzle waste material is used as a raw material, and light rare earth, heavy rare earth and alkaline earth element are scientifically and reasonably added into the raw material, so that the defects that the conventional magnesium alloy performance is low and the preparation method is incomplete and contaminative are overcome; and the prepared magnesium alloy is high in strength, high in corrosion resistance, good in mobility, excellent in feeling, simple and pluution-free in preparation process, low in cost of raw materials and suitable for industrial production.
Description
Technical field
The present invention relates to the metal material processing technical field, relate in particular to a kind of magnesium-rare earth and preparation method thereof.
Background technology
Magnesium alloy is to add other elementary composition alloys take magnesium as base, it is material the lightest in the Structural Engineering, have that light weight, high specific stiffness, high damping, vibration and noise reducing, electromagnetic radiation resistant, thermal diffusivity are good, the good characteristic such as good of sense, be widely used in the every field such as aerospace, transportation, chemical industry.
Along with countries in the world to the resource and environment growing interest, production is pursued lightweight, energy-saving and emission-reduction and comprehensive utilization of resources day by day, is indicating that magnesium alloy will play the part of very important role in following metal material field.Yet traditional magnesium alloy exists the weakness such as not anti-oxidant burning, not anti-corrosion, high temperature creep resistance is poor, hot strength is low, far can't satisfy modern aerospace, traffic, 3C industry and other manufacturing requirement, thereby the magnesium alloy materials of rare earth occur again containing in recent years.Facts have proved to have special chemically reactive and surface-active rare earth element, is to improve magnesium alloy cast performance, high temperature creep property and corrosion resistance nature the most effectively and the element that has practical value most.
Yet magnesium-rare earth still is in conceptual phase at present, and technology is also immature.Because rare earth element kind and addition are unreasonable, cause magnesium-rare earth can not reach the requirement of Modern Fine Chemical Industry industry, its weight, intensity, the performance such as corrosion-resistant still have much room for improvement, the preparation technology of prior art is also perfect not to the utmost in addition, generally all need adopt flux as auxiliary, but flux both corrosion products, crucible and contaminate environment under hot conditions, villaumite wherein can bring again the loss of rare earth element, the rare earth element impurity and purification that seriously undermine, all effects of thin reinforced magnesium alloy have further affected the quality of magnesium-rare earth.
Summary of the invention
The object of the invention is to overcome above-mentioned technological deficiency, a kind of magnesium-rare earth and preparation method thereof is provided, described magnesium-rare earth intensity is high, strong resistance, good fluidity, sense are good good, and preparation technology is simply pollution-free, raw materials cost is low, is fit to suitability for industrialized production.
The present invention solves the problems of the technologies described above the scheme that adopts:
First aspect the invention provides a kind of magnesium-rare earth, and the weight percent of described magnesium-rare earth consists of:
Aluminium: 8 ~ 9.9%
Zinc: 0.3 ~ 1%
Strontium: 0 ~ 0.2%
Barium: 0 ~ 0.2%
Calcium: 0 ~ 0.2%
Manganese: 0.05 ~ 0.5%
Titanium: 0 ~ 0.1%
Beryllium: 0.0001 ~ 0.0015%
Light rare earths: 0 ~ 0.8%
Heavy rare earths: 0 ~ 0.5%
Surplus is magnesium and inevitable impurity.
Preferably, described light rare earths is cerium, lanthanum, or its combination.
Preferably, heavy rare earths is rich yttrium.
Magnesium-rare earth of the present invention, gently, the heavy rare earths combination rationally, the light rare earths impurity and purification stronger than heavy rare earth element, modifying-refining effect had both been brought into play, bring into play again the heavy rare earth element solution strengthening stronger than light rare earths, dispersion-strengthened action, also contain simultaneously the alkaline earth elements such as strontium, barium, calcium, manganese, titanium, beryllium, promoted the flowability of magnesium-rare earth, reduced the defectives such as hot tearing, described magnesium-rare earth intensity is high, strong resistance, good fluidity, sense are good good.
Second aspect the invention provides the preparation method of above-mentioned magnesium-rare earth, may further comprise the steps:
(1) batching is prepared: preset the component requirement of each element, and require to be ready to prepare the required batching of magnesium-rare earth according to component, comprising: magnesium alloy waste material, rare earth intermediate alloy, alkaline earth master alloy, aluminium manganese master alloy, aluminium beryllium master alloy; The component of described each element requires to form for the weight percent of above-mentioned magnesium-rare earth;
(2) batching preheating: to the preheating 30～80 minutes under 140～160 ℃ of conditions of above-mentioned batching;
(3) melting: magnesium alloy waste material is packed in the crucible, and under the protection of rare gas element with crucible in temperature rise to 700～720 ℃, make described magnesium alloy waste material fusing;
(4) alloying: temperature is 680～720 ℃ in the control crucible, adds aluminium manganese master alloy and aluminium beryllium master alloy through preheating, stirs;
(5) microalloying: be warming up to 720 ~ 800 ℃, add rare earth intermediate alloy and alkaline earth master alloy through preheating, stir make its fusing and with the abundant mixing of magnesium alloy waste material;
(6) gas refinement: pass into argon gas and under 670～690 ℃, carry out refining toward smelting furnace casting room.
(7) removal of impurities: temperature is 690～710 ℃ in the control refining furnace, uses ceramic filter plate to filter impurity in the melt, and leaves standstill under 670～690 ℃ and make contamination precipitation;
(8) analysis of components: get the part melt, pour into spectral analysis sample, and carry out analysis of components, if composition does not meet the described component requirement of step (1), repeating step (2)～(8) then are until composition meets the requirements;
(9) examination of fracture: get the part melt, pour into the fracture sample, check that fracture has or not unusual phenomenon, if unusual phenomenon is arranged, repeating step (2)～(9) then are until fracture requirement up to specification;
(10) cast: control melt temperature is 660～680 ℃, and melt in the crucible is poured in the model, melt is flowed in model and is cooled to ingot, obtains magnesium-rare earth.
Preferably, the described magnesium alloy waste material of step (1) is 1 grade of waste material and 2 grades of waste materials that AZ series diecast magnesium alloy produces after extrusion process.
Preferably, the described rare earth intermediate alloy of step (1) is light rare earths master alloy, heavy rare earths master alloy, or its combination.
More preferably, the weight percent of described light rare earths master alloy consists of: cerium, La mixed rare earth 93%, all the other are aluminium and inevitable impurity.
More preferably, the weight percent of described heavy rare earths master alloy consists of: rich yttrium 20%, all the other are magnesium and inevitable impurity.
Preferably, the weight percent of the described alkaline earth master alloy of step (1) consists of: strontium, barium, calcium and titanium mixed alkaline earth 10%, all the other are aluminium and inevitable impurity.
Preferentially, the weight percent of the described aluminium manganese of step (1) master alloy consists of: manganese 10%, all the other are aluminium and inevitable impurity.
Preferentially, the weight percent of the described aluminium beryllium of step (1) master alloy consists of: beryllium 3%, all the other are aluminium and inevitable impurity.
Preferably, the described rare gas element of step (3) is nitrogen or argon gas.
Preferably, the described refining of step (6) is for continuing refining to blowing out.
Preferably, described the leaving standstill as continuing of step (7) left standstill to blowing out.
Wherein, the described unusual phenomenon of step (9) comprises: be mingled with, slag inclusion, gas enclosure, shrinkage cavity and porosity.
The present invention is take the diecast magnesium alloy waste material as main raw material, adopt green without flux recovery Technology, need not to use flux in the preparation process, avoided antiflux corrosion products, crucible and contaminate environment, also avoided flux and rare earth element effect and the loss rare earth element; Adopt simultaneously ceramic filter plate to replace traditional irony screen plate, avoided that the irony screen plate is yielding, filter pore is easily stopped up, cleared up difficult problem, also avoided iron screen plate to introduce that impurity elements of ferrum exceeds standard and the defective that causes the alloy material erosion resistance to reduce; In preparation process, add light, heavy rare earths and alkaline earth alloy, improved end properties.
Than prior art, the present invention has following beneficial effect:
(1) light, heavy rare earths combination rationally also contains the alkaline earth elements such as strontium, barium, calcium, manganese, titanium, beryllium simultaneously, has improved the performance of the each side such as magnesium-rare earth intensity, resistance, flowability, sense is good.
(2) take the diecast magnesium alloy waste material as main raw material, adopt green without flux recovery Technology and ceramic filter technology, given full play to the effect of light, heavy rare earths and alkaline earth element, improved end properties, preparation technology is simply pollution-free, raw materials cost is low, is fit to large-scale industrial production.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention, the below will do to introduce simply to the accompanying drawing of required use in the embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is preparation technology's schema of magnesium-rare earth of the present invention;
Fig. 2 is magnesium-rare earth and the mobile comparison diagram of existing magnesium-rare earth of the embodiment of the invention four preparations.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
See also Fig. 1, the preparation technology that the present invention prepares magnesium-rare earth is: batching is prepared → batching preheating → melt → alloying → microalloying → gas refinement → removal of impurities → analysis of components → examination of fracture → cast.
The present invention forms the magnesium-rare earth of having produced KMEA-1, KMEA-2, KMEA-3, four series of KMEA-4 as a trial according to the described weight percent of table 1, its weight percent forms and to see Table 1, and in the table 1, Al is aluminium, Mn is manganese, and Zn is zinc, and Si is silicon, Fe is iron, and Cu is copper, and Ni is nickel, Be is beryllium, and La is lanthanum, and Ce is cerium, Y is rich yttrium, A be alkaline earth element (such as strontium, barium, calcium, manganese, titanium)
Table 1KMEA-X serial rare-earth magnesium alloy weight percent forms table
| Element | Al | Mn | Zn | Si | Fe | Cu | Ni | Be | La | Ce | Y | A |
| KMEA-1 | 9.12 | 0.115 | 0.78 | 0.042 | 0.0019 | 0.0035 | 0.0011 | 0.0007 | 0.455 | 0.253 | - | - |
| KMEA-2 | 9.25 | 0.097 | 0.75 | 0.042 | 0.0024 | 0.0025 | 0.0009 | 0.0005 | - | - | 0.157 | - |
| KMEA-3 | 9.46 | 0.085 | 0.69 | 0.038 | ＜0.0012 | 0.0019 | 0.0006 | 0.0006 | 0.423 | 0.217 | 0.129 | - |
| KMEA-4 | 9.81 | 0.082 | 0.71 | 0.043 | ＜0.0012 | 0.0011 | 0.0006 | 0.0007 | 0.437 | 0.209 | 0.134 | 0.107 |
| AZ91D | 8.76 | 0.151 | 0.76 | 0.039 | 0.0032 | 0.0049 | 0.0018 | 0.0007 | - | - | - | - |
Preparation method to the magnesium-rare earth of above-mentioned four series of the present invention is further described below in conjunction with specific embodiment.
Embodiment one (KMEA-1)
A kind of preparation method of magnesium-rare earth may further comprise the steps:
(1) batching is prepared: the burn out rate of 1 grade of waste material getting that AZ series diecast magnesium alloy produces after extrusion process and 2 grades of waste material 1000Kg, the ratio in 0.8% 10% takes by weighing light rare earths master alloy 9.6Kg, aluminium manganese master alloy 0.8Kg, aluminium beryllium master alloy 0.2Kg; The weight percent of described light rare earths master alloy consists of: cerium, La mixed rare earth 93%, and all the other are aluminium and inevitable impurity; The weight percent of described aluminium manganese master alloy consists of: manganese 10%, and all the other are aluminium and inevitable impurity; The weight percent of described aluminium beryllium master alloy consists of: beryllium 3%, and all the other are aluminium and inevitable impurity;
(2) batching preheating: to the preheating 60 minutes under 150 ℃ of conditions of above-mentioned batching;
(3) melting: magnesium alloy waste material is packed in the crucible, and under the protection of nitrogen with crucible in temperature rise to 720 ℃, make described magnesium alloy waste material fusing;
(4) alloying: temperature is 700 ℃ in the control crucible, adds aluminium manganese master alloy and aluminium beryllium master alloy through preheating, stirs 5 minutes;
(5) microalloying: be warming up to 720 ℃, add the rare earth intermediate alloy through preheating, stir made in 5 minutes its fusing and with the abundant mixing of magnesium alloy waste material;
(6) gas refinement: pass into argon gas and descend lasting refinings to blowing out at 680 ℃ toward smelting furnace casting room;
(7) leave standstill the refining removal of impurities: temperature is 700 ℃ in the control refining furnace, uses ceramic filter plate to remove impurity, slag inclusion etc. in the magnesium liquid, continues to leave standstill to blowing out under 680 ℃, makes contamination precipitation;
(8) analysis of components: get the part melt, pour into spectral analysis sample, and carry out analysis of components, if composition does not meet the composition requirement of K MEA-1 in the table 1, repeating step (2)～(8) then are until composition meets the requirements;
(9) examination of fracture: get the part melt, pour into the fracture sample, check fracture have or not be mingled with, the unusual phenomenoies such as slag inclusion, gas enclosure, shrinkage cavity and porosity, if unusual phenomenon is arranged, repeating step (2)～(9) then are until fracture is without unusually;
(10) cast: control melt temperature is 670 ℃, and melt in the crucible is poured in the model, melt is flowed in model and is cooled to ingot, obtains magnesium-rare earth.
The weight percent of the magnesium-rare earth that finally makes consists of: aluminium 9.12%, and zinc 0.78%, strontium 0%, barium 0%, calcium 0%, manganese 0.151%, titanium 0%, beryllium 0.007%, all the other are the inevitably impurity such as magnesium and silicon, iron, copper, nickel.But concrete weight percent forms reference table 1.
As can be seen from Table 1, originally be implemented in and mix micro-light rare earths La and Ce in the rare earth alloy, Impurity Fe, Cu and Ni reduce in the alloy, and the prompting light rare earths has removal of impurities, cleaning action.
Embodiment two (KMEA-2)
A kind of preparation method of magnesium-rare earth may further comprise the steps:
(1) batching is prepared: the burn out rate of 1 grade of waste material getting that AZ series diecast magnesium alloy produces after extrusion process and 2 grades of waste material 1040Kg, the ratio in 0.05% 20% takes by weighing heavy rare earths master alloy 19.55Kg, aluminium manganese master alloy 0.8Kg, aluminium beryllium master alloy 0.2Kg; The weight percent of described heavy rare earths master alloy consists of: rich yttrium 20%, and all the other are magnesium and inevitable impurity; The weight percent of described aluminium manganese master alloy consists of: manganese 10%, and all the other are aluminium and inevitable impurity; The weight percent of described aluminium beryllium master alloy consists of: beryllium 3%, and all the other are aluminium and inevitable impurity;
(2) batching preheating: to the preheating 30 minutes under 160 ℃ of conditions of above-mentioned batching;
(3) melting: magnesium alloy waste material is packed in the crucible, and under the protection of argon gas with crucible in temperature rise to 700 ℃, make described magnesium alloy waste material fusing;
(4) alloying: temperature is 690 ℃ in the control crucible, adds aluminium manganese master alloy and aluminium beryllium master alloy through preheating, stirs 3 minutes;
(5) microalloying: be warming up to 800 ℃, add the rare earth intermediate alloy through preheating, stir made in 3 minutes its fusing and with the abundant mixing of magnesium alloy waste material;
(6) gas refinement: pass into argon gas and descend lasting refinings to blowing out at 680 ℃ toward smelting furnace casting room;
(7) leave standstill the refining removal of impurities: temperature is 700 ℃ in the control refining furnace, uses ceramic filter plate to remove impurity, slag inclusion etc. in the magnesium liquid, continues to leave standstill to blowing out under 680 ℃, makes contamination precipitation;
(8) analysis of components: get the part melt, pour into spectral analysis sample, and carry out analysis of components, if composition does not meet the composition requirement of K MEA-2 in the table 1, repeating step (2)～(8) then are until composition meets the requirements;
(9) examination of fracture: get the part melt, pour into the fracture sample, check fracture have or not be mingled with, the unusual phenomenoies such as slag inclusion, gas enclosure, shrinkage cavity and porosity, if unusual phenomenon is arranged, repeating step (2)～(9) then are until fracture is without unusually;
(10) cast: control melt temperature is 660 ℃, and melt in the crucible is poured in the model, melt is flowed in model and is cooled to ingot, obtains magnesium-rare earth.
The weight percent of the magnesium-rare earth that finally makes consists of: aluminium 9.25%, and zinc 0.75%, strontium 0%, barium 0%, calcium 0%, manganese 0.097%, titanium 0%, beryllium 0.005%, all the other are the inevitably impurity such as magnesium and silicon, iron, copper, nickel.But concrete weight percent forms reference table 1.
Originally be implemented in and mix the rich Y of rare earth in the rare earth alloy, Impurity Fe, Cu and Ni reduce (seeing Table 1) in the alloy, and the mechanical property of alloy promotes to some extent than embodiment one simultaneously, and prompting heavy rare earths has better solution strengthening and dispersion-strengthened action.
Embodiment three (KMEA-3)
A kind of preparation method of magnesium-rare earth may further comprise the steps:
(1) batching is prepared: the burn out rate that the burn out rate of 1 grade of waste material getting that AZ series diecast magnesium alloy produces after extrusion process and 2 grades of waste material 1080Kg, the ratio in 0.8% 10% takes by weighing light rare earths master alloy 10.4Kg, the ratio in 0.05% 20% takes by weighing heavy rare earths master alloy 19.55Kg, aluminium manganese master alloy 0.8Kg, aluminium beryllium master alloy 0.2Kg; The weight percent of described light rare earths master alloy consists of: cerium, La mixed rare earth 93%, and all the other are aluminium and inevitable impurity; The weight percent of described heavy rare earths master alloy consists of: rich yttrium 20%, and all the other are magnesium and inevitable impurity; The weight percent of described aluminium manganese master alloy consists of: manganese 10%, and all the other are aluminium and inevitable impurity; The weight percent of described aluminium beryllium master alloy consists of: beryllium 3%, and all the other are aluminium and inevitable impurity;
(2) batching preheating: to the preheating 50 minutes under 140 ℃ of conditions of above-mentioned batching;
(3) melting: magnesium alloy waste material is packed in the crucible, and under the protection of argon gas with crucible in temperature rise to 710 ℃, make described magnesium alloy waste material fusing;
(4) alloying: temperature is 710 ℃ in the control crucible, adds aluminium manganese master alloy and aluminium beryllium master alloy through preheating, stirs 5 minutes;
(5) microalloying: be warming up to 750 ℃, add light rare earths master alloy and heavy rare earths master alloy through preheating, stir made in 5 minutes its fusing and with the abundant mixing of magnesium alloy waste material;
(6) gas refinement: pass into argon gas and descend lasting refinings to blowing out at 670 ℃ toward smelting furnace casting room;
(7) leave standstill the refining removal of impurities: temperature is 690 ℃ in the control refining furnace, uses ceramic filter plate to remove impurity, slag inclusion etc. in the magnesium liquid, continues to leave standstill to blowing out under 670 ℃, makes contamination precipitation;
(8) analysis of components: get the part melt, pour into spectral analysis sample, and carry out analysis of components, if composition does not meet the composition requirement of K MEA-3 in the table 1, repeating step (2)～(8) then are until composition meets the requirements;
(9) examination of fracture: get the part melt, pour into the fracture sample, check fracture have or not be mingled with, the unusual phenomenoies such as slag inclusion, gas enclosure, shrinkage cavity and porosity, if unusual phenomenon is arranged, repeating step (2)～(9) then are until fracture is without unusually;
(10) cast: control melt temperature is 680 ℃, and melt in the crucible is poured in the model, melt is flowed in model and is cooled to ingot, obtains magnesium-rare earth.
The weight percent of the magnesium-rare earth that finally makes consists of: aluminium 9.46%, and zinc 0.69%, strontium 0%, barium 0%, calcium 0%, manganese 0.085%, titanium 0%, beryllium 0.006%, all the other are the inevitably impurity such as magnesium and silicon, iron, copper, nickel.But concrete weight percent forms reference table 1.
Micro-light rare earths La, Ce and the rich Y combination of heavy rare earths are added in this enforcement, Impurity Fe, Cu and Ni obviously reduce (seeing Table 1) in the alloy, the mechanical property of alloy promotes to some extent than embodiment one simultaneously, this explanation light rare earths has better impurity and purification effect, heavy rare earths has better solution strengthening and dispersion-strengthened action, has reached synergy.
Embodiment four (KMEA-4)
A kind of preparation method of magnesium-rare earth may further comprise the steps:
(1) batching is prepared: the burn out rate that the burn out rate of 1 grade of waste material getting that AZ series diecast magnesium alloy produces after extrusion process and 2 grades of waste material 1000Kg, the ratio in 0.8% 10% takes by weighing light rare earths master alloy 9.6Kg, the ratio in 0.05% 20% takes by weighing heavy rare earths master alloy 18.95Kg, takes by weighing alkaline earth master alloy 30Kg, aluminium manganese master alloy 0.8Kg, aluminium beryllium master alloy 0.2Kg in 0.3% ratio, 10% burn out rate; The weight percent of described light rare earths master alloy consists of: cerium, La mixed rare earth 93%, and all the other are aluminium and inevitable impurity; The weight percent of described heavy rare earths master alloy consists of: rich yttrium 20%, and all the other are magnesium and inevitable impurity; The weight percent of described alkaline earth master alloy consists of: strontium, barium, calcium and titanium mixed alkaline earth 10%, and all the other are aluminium and inevitable impurity; The weight percent of described aluminium manganese master alloy consists of: manganese 10%, and all the other are aluminium and inevitable impurity; The weight percent of described aluminium beryllium master alloy consists of: beryllium 3%, and all the other are aluminium and inevitable impurity;
(2) batching preheating: to the preheating 40 minutes under 150 ℃ of conditions of above-mentioned batching;
(3) melting: magnesium alloy waste material is packed in the crucible, and under the protection of argon gas with crucible in temperature rise to 690 ℃, make described magnesium alloy waste material fusing;
(4) alloying: temperature is 690 ℃ in the control crucible, adds aluminium manganese master alloy and aluminium beryllium master alloy through preheating, stirs 5 minutes;
(5) microalloying: be warming up to 780 ℃, add light rare earths master alloy, heavy rare earths master alloy and alkaline earth master alloy through preheating, stir made in 5 minutes its fusing and with the abundant mixing of magnesium alloy waste material;
(6) gas refinement: pass into argon gas and descend lasting refinings to blowing out at 690 ℃ toward smelting furnace casting room;
(7) leave standstill the refining removal of impurities: temperature is 700 ℃ in the control refining furnace, uses ceramic filter plate to remove impurity, slag inclusion etc. in the magnesium liquid, continues to leave standstill to blowing out under 690 ℃, makes contamination precipitation;
(8) analysis of components: get the part melt, pour into spectral analysis sample, and carry out analysis of components, if composition does not meet the composition requirement of K MEA-1 in the table 1, repeating step (2)～(8) then are until composition meets the requirements;
(9) examination of fracture: get the part melt, pour into the fracture sample, check fracture have or not be mingled with, the unusual phenomenoies such as slag inclusion, gas enclosure and pore, if unusual phenomenon is arranged, repeating step (2)～(9) then;
(10) cast: control melt temperature is 670 ℃, and melt in the crucible is poured in the model, melt is flowed in model and is cooled to ingot, obtains magnesium-rare earth.
The weight percent of the magnesium-rare earth that finally makes consists of: aluminium 9.81%, and zinc 0.71%, strontium 0.107%, barium 0.107%, calcium 0.107%, manganese 0.082%, titanium 0.1%, beryllium 0.007%, all the other are the inevitably impurity such as magnesium and silicon, iron, copper, nickel.
The embodiment of the invention has also been carried out mobile simultaneous test, and the flowability of having tested respectively existing magnesium-rare earth and the described magnesium-rare earth of the present embodiment, result are as shown in Figure 2.As can be seen from Figure 2, the embodiment of the invention is passed through micro-light rare earths La and Ce, and the rich Y of heavy rare earths, micro-alkaline earth element (such as Sr, Ba) combination are added, and have obviously promoted the flowability of magnesium-rare earth.
The present embodiment is with micro-light rare earths La and Ce, the rich Y of heavy rare earths and micro-alkaline earth element combination interpolation, Impurity Fe, Cu and Ni obviously reduce (seeing Table 1) in the alloy, the mechanical property of alloy promotes to some extent than embodiment one simultaneously, the while alloy flowability obviously promotes this explanation light rare earths of (see figure 2) and has better impurity and purification effect, heavy rare earths has better solution strengthening and dispersion-strengthened action, the alkaline earth element adding has the lifting alloy flowability, reduce the defectives such as hot tearing, reach combination " synergistic effect ".
The above is preferred implementation of the present invention, and should be pointed out that is not affecting in the situation of the invention process, the embodiment of the invention can also be passed through the batching in the set-up procedure (1), so that the weight percent of the magnesium-rare earth that finally makes consists of: aluminium 8%, zinc 0.3%, strontium 0.2%, barium 0.2%, calcium 0.2%, manganese 0.5%, titanium 0.1%, beryllium 0.0015%, all the other are the inevitably impurity such as magnesium and silicon, iron, copper, nickel.
Claims (10)
1. a magnesium-rare earth is characterized in that, the weight percent of described magnesium-rare earth consists of:
Aluminium: 8 ~ 9.9%
Zinc: 0.3 ~ 1%
Strontium: 0 ~ 0.2%
Barium: 0 ~ 0.2%
Calcium: 0 ~ 0.2%
Manganese: 0.05 ~ 0.5%
Beryllium: 0.0001 ~ 0.0015%
Light rare earths: 0 ~ 0.8%
Heavy rare earths: 0 ~ 0.5%
Surplus is magnesium and inevitable impurity.
2. a kind of magnesium-rare earth according to claim 1 is characterized in that, described light rare earths is cerium, lanthanum, or its combination.
3. a kind of magnesium-rare earth according to claim 1 is characterized in that, described heavy rare earths is rich yttrium.
4. the preparation method of the described a kind of magnesium-rare earth of claim 1-3 any one is characterized in that, may further comprise the steps:
(1) batching is prepared: preset the component requirement of each element, and require to be ready to prepare the required batching of magnesium-rare earth according to component, comprising: magnesium alloy waste material, rare earth intermediate alloy, alkaline earth master alloy, aluminium manganese master alloy, aluminium beryllium master alloy; The component of described each element requires to form for weight percent claimed in claim 1;
(2) batching preheating: to the preheating 30～80 minutes under 140～160 ℃ of conditions of above-mentioned batching;
(3) melting: magnesium alloy waste material is packed in the crucible, and under the protection of rare gas element with crucible in temperature rise to 700～720 ℃, make described magnesium alloy waste material fusing;
(4) alloying: temperature is 680～720 ℃ in the control crucible, adds aluminium manganese master alloy and aluminium beryllium master alloy through preheating, stirs;
(5) microalloying: be warming up to 720 ~ 800 ℃, add rare earth intermediate alloy and alkaline earth master alloy through preheating, stir make its fusing and with the abundant mixing of magnesium alloy waste material;
(6) gas refinement: pass into argon gas and under 670～690 ℃, carry out refining toward smelting furnace casting room;
(7) removal of impurities: temperature is 690～710 ℃ in the control refining furnace, uses ceramic filter plate to filter impurity in the melt, and leaves standstill under 670～690 ℃ and make contamination precipitation;
(8) analysis of components: get the part melt, pour into spectral analysis sample, and carry out analysis of components, if composition does not meet the described component requirement of step (1), repeating step (2)～(8) then are until composition meets the requirements;
(9) examination of fracture: get the part melt, pour into the fracture sample, check that fracture has or not unusual phenomenon, if unusual phenomenon is arranged, repeating step (2)～(9) then are not until unusual phenomenon appears in fracture;
(10) cast: control melt temperature is 660～680 ℃, and melt in the crucible is poured in the model, melt is flowed in model and is cooled to ingot, obtains magnesium-rare earth.
5. the preparation method of a kind of magnesium-rare earth according to claim 4 is characterized in that, the described magnesium alloy waste material of step (1) is 1 grade of waste material and 2 grades of waste materials that AZ series diecast magnesium alloy produces after extrusion process.
6. the preparation method of a kind of magnesium-rare earth according to claim 4 is characterized in that, the described rare earth intermediate alloy of step (1) is light rare earths master alloy, heavy rare earths master alloy, or its combination.
7. the preparation method of a kind of magnesium-rare earth according to claim 6 is characterized in that, the weight percent of described light rare earths master alloy consists of: cerium, La mixed rare earth 93%, all the other are aluminium and inevitable impurity.
8. the preparation method of a kind of magnesium-rare earth according to claim 6 is characterized in that, the weight percent of described heavy rare earths master alloy consists of: rich yttrium 20%, all the other are magnesium and inevitable impurity.
9. the preparation method of a kind of magnesium-rare earth according to claim 4 is characterized in that, the weight percent of the described alkaline earth master alloy of step (1) consists of: strontium and barium mishmetal 10%, all the other are aluminium and inevitable impurity.
10. the preparation method of a kind of magnesium-rare earth according to claim 4 is characterized in that, the described unusual phenomenon of step (9) comprises: be mingled with, slag inclusion, gas enclosure, shrinkage cavity and porosity.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121095A (en) * | 2013-03-12 | 2013-05-29 | 中北大学 | Squeeze casting preparation technology of AZ91D rare earth magnesium alloy |
| CN103131877A (en) * | 2013-03-27 | 2013-06-05 | 江苏礼德铝业有限公司 | Smelting process of magnesium alloy |
| CN104745905A (en) * | 2013-12-30 | 2015-07-01 | 苏州昊卓新材料有限公司 | High-strength high-toughness die-cast magnesium alloy and preparation method thereof |
| CN105886819A (en) * | 2016-06-07 | 2016-08-24 | 中国兵器工业第五九研究所 | Continuous smelting and casting method of high-quality zirconium-containing magnesium alloy |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241641A (en) * | 1999-07-09 | 2000-01-19 | 上海交通大学 | Fireproof cast magnesium alloy and its smelting and casting process |
| CN1540016A (en) * | 2003-10-27 | 2004-10-27 | 重庆大学 | Flame retardant casting magnesium alloy |
-
2012
- 2012-10-17 CN CN2012103952892A patent/CN102899545A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241641A (en) * | 1999-07-09 | 2000-01-19 | 上海交通大学 | Fireproof cast magnesium alloy and its smelting and casting process |
| CN1540016A (en) * | 2003-10-27 | 2004-10-27 | 重庆大学 | Flame retardant casting magnesium alloy |
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| CN105886819A (en) * | 2016-06-07 | 2016-08-24 | 中国兵器工业第五九研究所 | Continuous smelting and casting method of high-quality zirconium-containing magnesium alloy |
| US11091823B2 (en) | 2016-12-23 | 2021-08-17 | Posco | Magnesium alloy sheet and manufacturing method thereof |
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| CN110382724B (en) * | 2016-12-23 | 2022-03-25 | 株式会社Posco | Magnesium alloy sheet material and method for producing same |
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| CN108642313A (en) * | 2018-05-25 | 2018-10-12 | 哈尔滨吉星机械工程有限公司 | A method of regenerating magnalium system magnesium alloy waste material using double rare earths |
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