CN105755339A - Deformed magnesium alloy material and preparation method thereof - Google Patents
Deformed magnesium alloy material and preparation method thereof Download PDFInfo
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- CN105755339A CN105755339A CN201610099525.4A CN201610099525A CN105755339A CN 105755339 A CN105755339 A CN 105755339A CN 201610099525 A CN201610099525 A CN 201610099525A CN 105755339 A CN105755339 A CN 105755339A
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- magnesium alloy
- magnesium
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- 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
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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
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- 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
Abstract
The invention discloses a deformed magnesium alloy material and a preparation method thereof. The deformed magnesium alloy material comprises the following components in percentage by weight: 4.1-4.6% of Cu (copper), 0.1-0.5% of Al (aluminum), 0.1-0.2% of Ce (cerium), 0.05-1% of Mn (manganese), 2.1-6.9% of Sn (tin), 0.06-1% of Co (cobalt), and the balance of Mg (magnesium). The deformed magnesium alloy material has the advantages that the high toughness is obtained, and the higher tensile strength and yield strength of the alloy can be guaranteed; by adding more Sn, and utilizing the property that the saturating solid solubility of Sn in Mg is quickly decreased along with the lowering of temperature, the separating of Mg2Sn phase in the high-temperature hard phase is favorably promoted, and the dispersive reinforced tissue is easily obtained, so that the room temperature and high temperature mechanical properties of magnesium alloy are improved; by selecting the rare earth element of Ce, the microalloying is realized, the better roughening effect is obtained, and the amount of impurities and inclusions caused by alloying is furthest reduced.
Description
Technical field
The present invention relates to alloy field, be specifically related to a kind of deformed magnesium alloy material and preparation method thereof.
Background technology
Magnesium alloy has low-density, high specific strength and specific stiffness, high heat-conductivity conducting, excellent damping characteristics and capability of electromagnetic shielding, excellent cast form performance and machinability, and is easily recycled.Along with stepping up of science and technology, promote high-strength light magnesium base alloy in the extensive use in the fields such as Aero-Space, automobile making, household electrical appliances instrument, telecommunications.But, current magnesium alloy high-temperature heat-resistance performance is poor mostly, it is impossible to meet the service condition of more than 150 DEG C, makes magnesium alloy receive serious obstruction in the development further of industrial circle.
Alloying is to improve one of magnesium alloy mechanical property most efficient method.Rare earth element, as alloy element important in magnesium alloy, has crystal grain thinning, purifies crystal boundary, improves casting character and improves the good characteristic such as Alloy At Room Temperature and mechanical behavior under high temperature.The research and development of current business heat resistance magnesium alloy are concentrated mainly on and improve its heat resistance by elements such as interpolation rare earths, but expensive, use and nevertheless suffer from restriction.
Improve magnesium alloy comprehensive mechanical property and also should control its value at cost simultaneously, thus utilize multicomponent microalloying method to be replaced by other elements or partly replace the alloying action of rare earth element, be the important development trend improving magnesium alloy combination property.According to Mg-Sn binary phase diagraml, when eutectic transformation temperature 561.2 DEG C, the Sn saturated solid solubility in Mg is 14.85wt.%, and solid solubility reduces change substantially with temperature.When temperature drops to 400 DEG C, saturated solid solubility is substantially reduced to 4.4wt.%, and when 200 DEG C, saturated solid solubility is only 0.45wt.%.The characteristic that the Sn saturated solid solubility in Mg declines with temperature and quickly reduces may advantageously facilitate the precipitation of Mg2Sn phase, it is thus achieved that dispersion-strengtherning tissue, thus improving room temperature and the mechanical behavior under high temperature of magnesium alloy.Mg2Sn phase is high-temperature rigid phase, and under room temperature, crystal structure is cubic system, and fusing point is 770.5 DEG C, and microhardness is 119HV.The precipitation of Mg2Sn phase can significantly improve hardness and the tensile strength of alloy.Thus the interpolation of Sn can provide for the strengthening of magnesium alloy and ensure.
Although adding alkaline-earth metal can reduce production cost, but its grain refinement and alloy strength improve obvious far away from the action effect of rare earth metal, one-sided excessively controlling thus sacrificing the improvement of Properties of Magnesium Alloy cost, effect ratio is far below adding rare earth element, thus significantly limit the application of magnesium alloy.Casting shrinkage porosite existing for casting alloy, thermal contraction and the defect such as secondary dendrite is thick cannot to properly settling, thus magnesium alloy product would be likely to occur obvious crack initiation source, thus seriously undermining the reliability of Magnesium Alloys Components of knowing clearly.Therefore it is very necessary for adding a certain amount of rare earth element
Summary of the invention
It is an object of the invention to provide a kind of deformed magnesium alloy material and preparation method thereof.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of deformed magnesium alloy material, comprises following components in percentage by weight:
Cu4.1～4.6%；Al0.1～0.5%；Ce0.1～0.2%；Mn0.05～1%；Sn2.1～6.9%；Co0.06～1%；Mg surplus.
The preparation method that present invention also offers a kind of deformed magnesium alloy material, comprises the steps:
S1, weigh fine aluminium, fine copper, pure magnesium, pure tin, magnesium cerium intermediate alloy, pure cobalt and aluminum manganese intermediate alloy by the proportioning described in claim 1, carry out drying and processing；
S2, by crucible heating-up temperature to 530～570 DEG C time, in crucible, add pure magnesium that step S1 weighs, fine aluminium, fine copper, pure tin and pure cobalt, adopt the CaF of KCl+2～5% of 55～60%2The BaCl of+10～15%2As refining agent, and pass into protectiveness mixing gas, be rapidly heated with the programming rate of 10 DEG C/min, be heated to 700～720 DEG C and be incubated 10～30 minutes, obtain liquid magnesium alloy；
S3, when heating-up temperature reaches 720～760 DEG C, add the magnesium cerium intermediate alloy that weighs of step S1 and aluminum manganese intermediate alloy, gentle agitation aluminium alloy, after solid material all melts, insulation stands 10 minutes, obtains magnesium alloy fused mass
S4, the magnesium alloy fused mass of gained is cast to 250～350 DEG C preheating after mould in, cool down to obtain magnesium alloy ingot；
S5, the magnesium alloy ingot of gained is preheated 2 hours in 400～430 DEG C of temperature ranges after, add and be pre-heated in the extrusion die of 430～440 DEG C, be squeezed into bar.
Wherein, the extrusion temperature in described step S5 is 460 DEG C, and extruding rate is 2mm/s, and extrusion ratio is 110: 1.
The method have the advantages that
While obtaining high tenacity, also ensure that alloy has higher tensile strength and yield strength.With the addition of that more Sn, the Sn saturated solid solubility in Mg declines with temperature and the characteristic that quickly reduces may advantageously facilitate high-temperature rigid phase Mg2The precipitation of Sn phase, it is easy to obtain dispersion-strengtherning tissue, thus improving room temperature and the mechanical behavior under high temperature of magnesium alloy；Owing to have selected rare earth element ce, the toughening effect of the best can be obtained while realizing microalloying, it is possible to reduce the impurity produced due to alloying to greatest extent and be mingled with；Owing to adopting the form of Al-Ce intermediate alloy to add Ce element, it is ensured that the accurate control of alloying component so that the preparation technology highly versatile of this alloy, simple to operate.
Detailed description of the invention
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1
S1, weigh Cu4.1%；Al0.1%；Ce0.1%；Mn0.05%；Sn2.1%；Co0.06%；Mg surplus, carries out drying and processing；
S2, by crucible heating-up temperature to 530 DEG C time, in crucible, add pure magnesium that step S1 weighs, fine aluminium, fine copper, pure tin and pure cobalt, adopt the CaF of the KCl+2% of 55%2The BaCl of+10%2As refining agent, and pass into protectiveness mixing gas, be rapidly heated with the programming rate of 10 DEG C/min, be heated to 700 DEG C and be incubated 10 minutes, obtain liquid magnesium alloy；
S3, when heating-up temperature reaches 720 DEG C, add the magnesium cerium intermediate alloy that weighs of step S1 and aluminum manganese intermediate alloy, gentle agitation aluminium alloy, after solid material all melts, insulation stands 10 minutes, obtains magnesium alloy fused mass
S4, the magnesium alloy fused mass of gained is cast to 250 DEG C preheating after mould in, cool down to obtain magnesium alloy ingot；
S5, the magnesium alloy ingot of gained is preheated 2 hours in 400 DEG C of temperature ranges after, add and be pre-heated in the extrusion die of 430 DEG C, be squeezed into bar, wherein, extrusion temperature is 460 DEG C, and extruding rate is 2mm/s, and extrusion ratio is 110: 1.
Embodiment 2
S1, weigh Cu4.6%；Al0.5%；Ce0.2%；Mn1%；Sn6.9%；Co1%；Mg surplus, carries out drying and processing；
S2, by crucible heating-up temperature to 570 DEG C time, in crucible, add pure magnesium that step S1 weighs, fine aluminium, fine copper, pure tin and pure cobalt, adopt the CaF of the KCl+5% of 60%2The BaCl of+15%2As refining agent, and pass into protectiveness mixing gas, be rapidly heated with the programming rate of 10 DEG C/min, be heated to 720 DEG C and be incubated 30 minutes, obtain liquid magnesium alloy；
S3, when heating-up temperature reaches 760 DEG C, add the magnesium cerium intermediate alloy that weighs of step S1 and aluminum manganese intermediate alloy, gentle agitation aluminium alloy, after solid material all melts, insulation stands 10 minutes, obtains magnesium alloy fused mass
S4, the magnesium alloy fused mass of gained is cast to 350 DEG C preheating after mould in, cool down to obtain magnesium alloy ingot；
S5, the magnesium alloy ingot of gained is preheated 2 hours in 430 DEG C of temperature ranges after, add and be pre-heated in the extrusion die of 440 DEG C, be squeezed into bar, wherein, extrusion temperature is 460 DEG C, and extruding rate is 2mm/s, and extrusion ratio is 110: 1.
Embodiment 3
S1, weigh Cu4.35%；Al0.3%；Ce0.15%；Mn0.525%；Sn4.5%；Co0.53%；Mg surplus, carries out drying and processing；
S2, by crucible heating-up temperature to 550 DEG C time, in crucible, add pure magnesium that step S1 weighs, fine aluminium, fine copper, pure tin and pure cobalt, adopt the CaF of the KCl+3.5% of 57.5%2The BaCl of+12.5%2As refining agent, and pass into protectiveness mixing gas, be rapidly heated with the programming rate of 10 DEG C/min, be heated to 710 DEG C and be incubated 20 minutes, obtain liquid magnesium alloy；
S3, when heating-up temperature reaches 740 DEG C, add the magnesium cerium intermediate alloy that weighs of step S1 and aluminum manganese intermediate alloy, gentle agitation aluminium alloy, after solid material all melts, insulation stands 10 minutes, obtains magnesium alloy fused mass
S4, the magnesium alloy fused mass of gained is cast to 300 DEG C preheating after mould in, cool down to obtain magnesium alloy ingot；
S5, the magnesium alloy ingot of gained is preheated 2 hours in 415 DEG C of temperature ranges after, add and be pre-heated in the extrusion die of 435 DEG C, be squeezed into bar, wherein, extrusion temperature is 460 DEG C, and extruding rate is 2mm/s, and extrusion ratio is 110: 1.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (3)
1. a deformed magnesium alloy material, it is characterised in that comprise following components in percentage by weight:
Cu4.1～4.6%；Al0.1～0.5%；Ce0.1～0.2%；Mn0.05～1%；Sn2.1～6.9%；Co0.06～1%；Mg surplus.
2. the preparation method of a deformed magnesium alloy material, it is characterised in that comprise the steps:
S1, weigh fine aluminium, fine copper, pure magnesium, pure tin, magnesium cerium intermediate alloy, pure cobalt and aluminum manganese intermediate alloy by the proportioning described in claim 1, carry out drying and processing；
S2, by crucible heating-up temperature to 530～570 DEG C time, in crucible, add pure magnesium that step S1 weighs, fine aluminium, fine copper, pure tin and pure cobalt, adopt the CaF of KCl+2～5% of 55～60%2The BaCl of+10～15%2As refining agent, and pass into protectiveness mixing gas, be rapidly heated with the programming rate of 10 DEG C/min, be heated to 700～720 DEG C and be incubated 10～30 minutes, obtain liquid magnesium alloy；
S3, when heating-up temperature reaches 720～760 DEG C, add the magnesium cerium intermediate alloy that weighs of step S1 and aluminum manganese intermediate alloy, gentle agitation aluminium alloy, after solid material all melts, insulation stands 10 minutes, obtains magnesium alloy fused mass
S4, the magnesium alloy fused mass of gained is cast to 250～350 DEG C preheating after mould in, cool down to obtain magnesium alloy ingot；
S5, the magnesium alloy ingot of gained is preheated 2 hours in 400～430 DEG C of temperature ranges after, add and be pre-heated in the extrusion die of 430～440 DEG C, be squeezed into bar.
3. the preparation method of a kind of deformed magnesium alloy material according to claim 2, it is characterised in that the extrusion temperature in described step S5 is 460 DEG C, extruding rate is 2mm/s, and extrusion ratio is 110: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610099525.4A CN105755339A (en) | 2016-02-21 | 2016-02-21 | Deformed magnesium alloy material and preparation method thereof |
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| CN201610099525.4A CN105755339A (en) | 2016-02-21 | 2016-02-21 | Deformed magnesium alloy material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718146A (en) * | 2021-09-03 | 2021-11-30 | 承德石油高等专科学校 | Mg-Sn-Ce-Ag-Sc alloy and preparation method thereof |
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| CN1584091A (en) * | 2003-08-06 | 2005-02-23 | 爱信精机株式会社 | Heat resistant mg alloy for casting process with excellent casting performance and low cost |
| CN102242298A (en) * | 2011-07-04 | 2011-11-16 | 四川大学 | Al and Zn strengthened Mg-Sn-RE-based high-toughness heat-resistant magnesium alloy |
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| CN1584091A (en) * | 2003-08-06 | 2005-02-23 | 爱信精机株式会社 | Heat resistant mg alloy for casting process with excellent casting performance and low cost |
| CN102242298A (en) * | 2011-07-04 | 2011-11-16 | 四川大学 | Al and Zn strengthened Mg-Sn-RE-based high-toughness heat-resistant magnesium alloy |
| CN102994836A (en) * | 2011-09-09 | 2013-03-27 | 江汉大学 | Tough magnesium alloy with high elongation rate |
| CN103602865A (en) * | 2013-12-02 | 2014-02-26 | 四川大学 | Copper-containing heat-resistant magnesium-tin alloy and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718146A (en) * | 2021-09-03 | 2021-11-30 | 承德石油高等专科学校 | Mg-Sn-Ce-Ag-Sc alloy and preparation method thereof |
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Application publication date: 20160713 |
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