CN109385559A - A kind of high Mn content Al-Mn-Mg alloy and preparation method thereof - Google Patents
A kind of high Mn content Al-Mn-Mg alloy and preparation method thereof Download PDFInfo
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Abstract
A kind of high Mn content Al-Mn-Mg alloy of the invention and preparation method thereof, alloying component is Mn 1.2~2.4% by weight percentage, Mg 0.5~5.5%, Si≤0.7%, Fe≤0.8%, Cu≤0.5%, Cr 0.1~1.0%, Zn≤0.25%, Ti≤0.25%, Zr≤0.25%, surplus are Al and impurity.Preparation method are as follows: stock up by composition proportion；Aluminium ingot heating fusing is formed into aluminum melt, other raw materials are added in aluminum melt, it is stirred evenly after fusing, form alloy melt, refining treatment is carried out to alloy melt using refining agent, it is stood after refining treatment, pours into casting after skimming, casting is put into the furnace that homogenizes and carry out Homogenization Treatments and high Mn content Al-Mn-Mg alloy is made after cooling down.Mn content is improved in the alloy, to improve the invigoration effect of Mn；Meanwhile addition element Cr, refine intermetallic compound phase Al6(MnFe), mitigate its damage to alloy mechanical property, further improve the mechanical property of alloy.
Description
Technical field:
The invention belongs to metal material and metallurgical technology fields, and in particular to a kind of high Mn content Al-Mn-Mg alloy and its
Preparation method.
Background technique:
Metallic element Mn is an important alloying element of aluminium alloy, and especially in 3000 line aluminium alloys, Mn is main
Element.Mn atom is dissolved into Al matrix, is generated solid solution strengthening effect, is improved alloy strength.So increasing in alloy
Mn content, be conducive to improve alloy intensity.But with the increase of Mn content, it will change between formation metal in the alloy
Close object phase Al6Mn, and Mn content is higher, intermetallic compound phase Al6Mn is coarseer.If Mn content has been more than Al-Mn alloy
Eutectic composition, Al6Mn becomes primary phase, then coarseer.If containing Fe element in alloy, Fe element can be integrated to
Al6In Mn phase, Al is formed6(FeMn) phase may will form Al if containing Si in alloy15(MeFe)3Si2Phase makes between metal
Compound is mutually coarseer.Coarse intermetallic compound phase has destruction to the mechanical property of alloy.Intermetallic compound
It is mutually coarseer, it is stronger to the destruction of mechanical property.So a certain range in must limiting Mn content, prevents from being formed thick
Big intermetallic compound phase.For example, 3000 be AA3003 in alloy, the Mn content of AA3004 and AA3005 alloy is 1.0-
1.5wt%.It often controls in production in lower limit.Mn content in Al-Mn-Mg alloy is lower, and the invigoration effect of Mn is difficult to sufficiently
It plays.This problem is frustrated always the research and development of Al-Mn-Mg system alloy.
Summary of the invention:
The purpose of the present invention is overcoming above-mentioned the shortcomings of the prior art, a kind of high Mn content Al-Mn-Mg alloy is provided
And preparation method thereof, and by the size and shape of the coarse phase in addition alterant change alloy, mitigate coarse opposite alloy
The damage of mechanical property changes the coarse InterMetallic Compound phase Al in alloy by Metamorphism treatment6Mn、Al6(FeMn) or
Al15(MeFe)3Si2Size and shape, mitigate its damage to alloy mechanical property, further increase containing for Mn in alloy
Amount, gives full play to the solid solution strengthening effect of Mn, further increases the mechanical property of alloy.
To achieve the above object, the invention adopts the following technical scheme:
A kind of high Mn content Al-Mn-Mg alloy, ingredient are Mn 1.2~2.4% by weight percentage, Mg 0.5~
5.5%, Si≤0.7%, Fe≤0.8%, Cu≤0.5%, Cr 0.1~1.0%, Zn≤0.25%, Ti≤0.25%, Zr≤
0.25%, surplus is Al and impurity, wherein impurity content≤1.0%.
The high Mn content Al-Mn-Mg alloy obtains 0 state through rolling and rolls panel products 135~338MPa of tensile strength, bends
Take 62~167MPa of intensity, elongation percentage 19~25%
A kind of preparation method of high Mn content Al-Mn-Mg alloy of the invention, sequentially includes the following steps:
(1) prepare Mn, Mg, Si, Fe, Cu, Cr, Zn, Ti, Zr and Al according to the ratio；Wherein, the Al is aluminium ingot；
(2) aluminium ingot heating fusing is formed into aluminum melt, other raw materials is added in aluminum melt, until after whole melting sources,
It stirs evenly, forms alloy melt, wherein the alloy melt temperature is controlled at 700~760 DEG C；
(3) refining treatment is carried out to alloy melt using refining agent, stands 20~40min after refining treatment, is poured after skimming
Form casting, wherein carry out online degasification and online addition grain refiner in the casting process, and pass through ceramic wafer mistake
Filter pours into casting；
(4) casting is put into the furnace that homogenizes and carries out Homogenization Treatments, obtained homogenization product, high Mn is made after cooling and contains
Measure Al-Mn-Mg alloy；Wherein, the Homogenization Treatments temperature be 550~620 DEG C, the time be 8~for 24 hours.
In the step (1), Mn is manganese additive or aluminium manganese intermediate alloy.
In the step (1), Mg is magnesium ingot.
In the step (1), Fe is iron additive or ferro-aluminum intermediate alloy.
In the step (1), Si is metallic silicon or aluminium silicon intermediate alloy.
In the step (1), Cu is fine copper, copper additives or aluminum bronze intermediate alloy.
In the step (1), Cr is chrome additive or aluminium chromium hardener.
In the step (1), Zr is zirconium additive or aluminium zirconium hardener.
In the step (1), Zn is zinc ingot metal.
In the step (1), Ti is titanium additives or aluminium titanium intermediate alloy.
In the step (2), be added Cu, Cr, Mn and Fe when, respectively select aluminum bronze intermediate alloy, aluminium chromium hardener,
Aluminium manganese intermediate alloy and ferro-aluminum intermediate alloy, or copper additives, chrome additive, manganese additive and iron additive are selected respectively.
In the step (3), casting is as needed, can be the states such as pole or slab ingot.
In the step (3), any aluminum refining agent with refining effect, such as Promag is can be selected in refining agent
Granular refining agent, by quality proportioning, the dosage of refining agent is the 0.05~0.5% of aluminium alloy melt total weight.
In the step (3), online degasification is sprayed into argon gas in aluminum water, argon gas using the online depassing unit of SNIF
Flow is 3~5m3/h。
In the step (3), the online grain refiner that adds is to be passed through aluminium alloy for Al-5Ti-1B using wire feeder
In melt, Al-5Ti-1B additive amounts are 0.5~2.0kg/t aluminium alloy melt, preferably 1.0kg/t aluminium alloy melt.
In the step (4), casting is after Homogenization Treatments by removal epidermis processing.
In the step (4), high Mn content Al-Mn-Mg alloy obtained can carry out subsequent place according to casting state
Reason, specifically:
When the casting that high Mn content Al-Mn-Mg alloy is made is pole, obtained high Mn content Al-Mn-Mg alloy is existed
400~500 DEG C of preheatings, are then squeezed into profile；
When the casting that high Mn content Al-Mn-Mg alloy is made is slab ingot, obtained high Mn content Al-Mn-Mg alloy is rolled
Plate is made, and before pole squeezes and/or slab ingot rolls, pole or slab ingot are cut into required ruler according to the technological requirements
It is very little.
Beneficial effects of the present invention:
High Mn content Al-Mn-Mg alloy of the invention improves the content of Mn in alloy, so that the reinforcing for improving Mn is made
With；Meanwhile addition element Cr, refine intermetallic compound phase Al6(MnFe) etc., mitigate related compound with respect to alloy mechanical property
The damage of energy, therefore the high Mn content Al-Mn-Mg alloy of the method for the present invention preparation has given full play to the solid solution strengthening effect of Mn,
Further improve the mechanical property of alloy.
Detailed description of the invention:
Fig. 1 is the solidifying of the high Mn content Al-Mn-Mg alloy that under same curing condition prepared by AA3004 alloy and embodiment 3
Gu organization chart, wherein Fig. 1 (a) is AA3004 Solidification Structure figure；Fig. 1 (b) is high Mn content Al- prepared by embodiment 3
Mn-Mg Solidification Structure figure；
Fig. 2 is the solidifying of the high Mn content Al-Mn-Mg alloy that under same curing condition prepared by AA5083 alloy and embodiment 10
Gu organization chart, wherein Fig. 2 (a) is AA5083 Solidification Structure figure；Fig. 2 (b) is high Mn content Al- prepared by embodiment 10
Mn-Mg Solidification Structure figure.
Specific embodiment:
Below with reference to embodiment, the present invention is described in further detail.
In the description of the present invention, it should be noted that the person that is not specified actual conditions in embodiment, according to normal conditions or
The condition that manufacturer suggests carries out；Reagents or instruments used without specified manufacturer is that can be obtained by commercially available purchase
Conventional products.
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described；As long as technical characteristic involved in described different embodiments is each other
Between do not constitute conflict and can be combined with each other.
In the embodiment of the present invention, if pole surface quality is preferable, directly squeezed after Homogenization Treatments；If pole
Surface quality is not good enough, then needs to remove epidermis after Homogenization Treatments；And be used for the slab ingot of plate & strip production, then after Homogenization Treatments
Epidermis is removed.
Online degasification is sprayed into argon gas in aluminum water, argon gas stream using the online depassing unit of SNIF in the embodiment of the present invention
Amount is 3-5m3/ h, rotor speed are 300~700r/min.
Adding grain refiner in the embodiment of the present invention online is to be passed through aluminium alloy for Al-5Ti-1B using wire feeder to melt
In body, Al-5Ti-1B additive amounts are 0.5~2.0kg/t aluminium alloy melt, preferably 1.0kg/t aluminium alloy melt.
In the embodiment of the present invention, the intermediate alloy of addition selects 85Mn agent, metallic silicon, magnesium ingot, zinc ingot metal, 85Ti agent, 85Cr
Agent and Al-50Cu intermediate alloy.
Embodiment 1
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 1.2wt%, Mg 0.55wt%, Si by weight percentage
0.3wt%, Fe 0.5wt%, Cu 0.15wt%, Cr 0.35wt%, Zn 0.2wt%, Ti≤0.15wt%, Zr
0.1wt%, surplus are Al and impurity, wherein impurity content≤1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 1.2wt%, Cu 0.15wt%, Mg 0.55wt%, Cr 0.35wt%,
Fe 0.5wt%, Si 0.3wt%, Zn 0.2wt%, Ti 0.15wt%, Zr 0.1wt%, surplus Al；Prepare aluminium ingot, magnesium
Ingot, metallic silicon, 85 manganese agent (the aluminium alloy element additive containing 85%Mn), 85 chromium agent (the aluminium alloy element addition containing 85%Cr
Agent)；Al-50Cu intermediate alloy；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 600 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, is hot-rolled down to 3mm thickness, is moved back through 450 DEG C/1h
High Mn content Al-Mn-Mg alloy O state (full annealing state) hot rolled plate is obtained after fire；
6, the O state tensile strength 135MPa of high Mn content Al-Mn-Mg alloy, yield strength 62MP, elongation percentage 25%；This
Alloy is to add 0.35%Cr on the basis of AA3005 alloy, has refined intermetallic compound phase Al6(MnFe), make alloy properties
It can be improved.
Embodiment 2
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 1.2wt%, Mg 1.0wt%, Si by weight percentage
0.3wt%, Fe 0.5wt%, Cu 0.15wt%, Cr 0.95wt%, surplus be Al and impurity, wherein impurity content≤
1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 1.2wt%, Cu 0.15wt%, Mg 1.0wt%, Cr 0.95wt%, Fe
0.5wt%, Si 0.3wt%, surplus Al；Prepare aluminium ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium alloy element containing 85%Mn
Additive), 85 chromium agent (the aluminium alloy element additive containing 85%Cr)；Al-50Cu intermediate alloy；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 600 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, is hot-rolled down to 3mm thickness, is moved back through 450 DEG C/1h
High Mn content Al-Mn-Mg alloy O state (full annealing state) hot rolled plate is obtained after fire；
6, the tensile strength 205MPa of the O state of high Mn content Al-Mn-Mg alloy, yield strength 85MP, elongation percentage 22%；
This alloy is to add 0.35%Cr on the basis of AA3004 alloy, has refined intermetallic compound phase Al6(MnFe), make alloy
Performance is improved.
Embodiment 3
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 1.8wt%, Mg 1.1wt%, Si by weight percentage
0.3wt%, Fe 0.5wt%, Cu 0.15wt%, Cr 0.35wt%, surplus be Al and impurity, wherein impurity content≤
1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 1.8wt%, Mg 1.1wt%, Cu 0.15wt%, Cr 0.35wt%, Fe
0.5wt%, Si 0.3wt%, surplus are Al and impurity；Prepare aluminium ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium conjunction containing 85%Mn
Gold element additive), 85 chromium agent (the aluminium alloy element additive containing 85%Cr)；Al-50Cu intermediate alloy；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 600 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, 2.5mm thickness is hot-rolled down to, through 450 DEG C/1h
After annealing, further cold rolling obtains high Mn content Al-Mn-Mg alloy H19 state cold-reduced sheet；
6, the tensile strength 348MPa of the H19 state of high Mn content Al-Mn-Mg alloy, yield strength 331MP, elongation percentage
2%.
Comparative example 3: as a comparison, tested by the ingredient of AA3004 alloy: ingredient is Mn 1.2wt%, Mg
1.1wt%, Cu 0.15wt%, Fe 0.5wt%, Si 0.3wt%, surplus are Al and impurity；The same the present embodiment of preparation method.
Tensile strength 302MPa of the AA3004 alloy product in H19 state, yield strength 287MP, elongation percentage 2%；
Fig. 1 is the AA3004 alloy and high Mn content Al- manufactured in the present embodiment that under same curing condition prepared by comparative example 3
The solidified structure figure of Mn-Mg alloy, wherein Fig. 1 (a) is AA3004 Solidification Structure figure；Fig. 1 (b) is the present embodiment preparation
High Mn content Al-Mn-Mg Solidification Structure figure；By attached drawing 1 it is recognized that while containing for Mn is greatly improved in the present embodiment
Amount, but it is rotten using Cr, refine rich Mn richness Fe intermetallic compound phase, the intermetallic compound phase Al in the present embodiment6
(MnFe) still very tiny, thus, the mechanical property of alloy has raising by a relatively large margin.
Embodiment 4
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 2.4wt%, Mg 0.7wt%, Si by weight percentage
0.3wt%, Fe 0.5wt%, Cu 0.15wt%, Cr 0.55wt%, surplus be Al and impurity, wherein impurity content≤
1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 2.4wt%, Mg 0.7wt%, Cu 0.15wt%, Cr 0.55wt%, Fe
0.5wt%, Si 0.3wt%, surplus are Al and impurity；Prepare aluminium ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium conjunction containing 85%Mn
Gold element additive), 85 chromium agent (the aluminium alloy element additive containing 85%Cr)；Al-50Cu intermediate alloy；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 600 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, is hot-rolled down to 3mm thickness, is moved back through 450 DEG C/1h
High Mn content Al-Mn-Mg alloy O state (full annealing state) hot rolled plate is obtained after fire；
6, the tensile strength 228MPa of high Mn content Al-Mn-Mg alloy O state, yield strength 81MP, elongation percentage 23%；Compared with
The content of Mn is greatly improved, and has refined intermetallic compound phase Al using Cr6(MnFe), but due to containing more in alloy
More intermetallic compound phases, elongation percentage decrease.
Embodiment 5
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 1.8wt%, Mg 2.5wt%, Cu by weight percentage
0.15wt%, Cr 0.55wt%, Fe 0.5wt%, Si 0.3wt%, surplus be Al and impurity, wherein impurity content≤
1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 1.8wt%, Mg 2.5wt%, Cu 0.15wt%, Cr 0.55wt%, Fe
0.5wt%, Si 0.3wt%, surplus are Al and impurity；Prepare aluminium ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium conjunction containing 85%Mn
Gold element additive), 85 chromium agent (the aluminium alloy element additive containing 85%Cr)；Al-50Cu intermediate alloy；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 600 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, is hot-rolled down to 3mm thickness, is moved back through 450 DEG C/1h
High Mn content Al-Mn-Mg alloy O state (full annealing state) hot rolled plate is obtained after fire；
6, the tensile strength 238MPa of the O state of high Mn content Al-Mn-Mg alloy, yield strength 91MP, elongation percentage 22%.
Embodiment 6
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 1.8wt%, Mg 3.5wt%, Cu by weight percentage
0.15wt%, Cr 0.55wt%, Fe 0.5wt%, Si 0.3wt%, surplus be Al and impurity, wherein impurity content≤
1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 1.8wt%, Mg 3.5wt%, Si 0.3wt%, Fe 0.5wt%, Cu
0.15wt%, Cr 0.55wt%, surplus are Al and impurity；Prepare aluminium ingot, magnesium ingot, metallic silicon, the 85 manganese agent (aluminium containing 85%Mn
Alloying element additive), 85 chromium agent (the aluminium alloy element additive containing 85%Cr)；Al-50Cu intermediate alloy；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 600 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, is hot-rolled down to 3mm thickness, is moved back through 450 DEG C/1h
High Mn content Al-Mn-Mg alloy O state (full annealing state) hot rolled plate is obtained after fire；
6, the O state tensile strength 251MPa of high Mn content Al-Mn-Mg alloy, yield strength 93MP, elongation percentage 21%.
Embodiment 7
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mg 4.2wt%, Mn 1.7wt%, Cr by weight percentage
0.35wt%, Fe 0.5wt%, Si 0.3wt%, Ti 0.10wt%, surplus be Al and impurity, wherein impurity content≤
1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mg 4.2wt%, Mn 1.7wt%, Cr 0.35wt%, Fe 0.5wt%, Si
0.3wt%, Ti 0.10wt%, surplus are Al and impurity；Prepare aluminium ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium conjunction containing 85%Mn
Gold element additive), 85 chromium agent (the aluminium alloy element additive containing 85%Cr)；75 titanium agent (the aluminium alloy element containing 75%Ti
Additive)；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 520 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, is hot-rolled down to 3mm thickness, is moved back through 450 DEG C/1h
High Mn content Al-Mn-Mg alloy O state (full annealing state) hot rolled plate is obtained after fire；
6, the O state tensile strength 295MPa of high Mn content Al-Mn-Mg alloy, yield strength 122MP, elongation percentage 22%；.
Embodiment 8
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 1.2wt%, Cu 0.15wt%, Mg by weight percentage
5.5wt%, Cr 0.35wt%, Fe 0.5wt%, Si 0.3wt%, surplus are Al and impurity, wherein impurity content≤1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 1.2wt%, Cu 0.15wt%, Mg 5.5wt%, Cr 0.35wt%, Fe
0.5wt%, Si 0.3wt%, surplus are Al and impurity；Prepare aluminium ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium conjunction containing 85%Mn
Gold element additive), 85 chromium agent (the aluminium alloy element additive containing 85%Cr)；75 titanium agent (the aluminium alloy element containing 75%Ti
Additive)；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 520 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, is hot-rolled down to 3mm thickness, is moved back through 450 DEG C/1h
High Mn content Al-Mn-Mg alloy O state (full annealing state) hot rolled plate is obtained after fire；
6, the tensile strength 319MPa of high Mn content Al-Mn-Mg alloy O state, yield strength 155MP, elongation percentage 22%.
Embodiment 9
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 1.5wt%, Mg 5.0wt%, Cu by weight percentage
0.15wt%, Zn 0.2wt%, Ti 0.15wt%, Zr 0.07wt%, Cr 0.9wt%, Fe 0.5wt%, Si 0.3wt%,
Surplus is Al and impurity, wherein impurity content≤1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 1.5wt%, Mg 5.0wt%, Cu 0.15wt%, Zn 0.2wt%, Ti
0.15wt%, Zr 0.07wt%, Cr 0.9wt%, Fe 0.5wt%, Si 0.3wt%, surplus are Al and impurity；Prepare aluminium
Ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium alloy element additive containing 85%Mn), 85 chromium agent (the aluminium alloy element containing 85%Cr
Additive)；75 titanium agent (the aluminium alloy element additive containing 75%Ti)；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into Φ 100mm pole by ceramic wafer filtering；
4, pole is subjected to Homogenization Treatments, 520 DEG C of Homogenization Treatments temperature, time 16h；
5, the pole after Homogenization Treatments is cut into suitably sized, then, in 450 DEG C of preheating 2h, is squeezed at 600 tons
Profile is squeezed on machine.Then high Mn content Al-Mn-Mg alloy O state (full annealing state) type is obtained after 450 DEG C/1h annealing
Material；
6, the tensile strength 331MPa of high Mn content Al-Mn-Mg alloy O state profile, yield strength 239MP, elongation percentage
17%；Compared with AA5083 alloy, intermetallic compound phase Al has been refined using Cr6(MnFe), mention alloy property
It is high.
Embodiment 10
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 1.8wt%, Mg 4.85wt%, Cu by weight percentage
0.15wt%, Zn 0.2wt%, Ti 0.15wt%, Zr 0.1wt%, Cr 0.35wt%, Fe 0.4wt%, Si
0.25wt%, surplus are Al and impurity, wherein impurity content≤1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 1.8wt%, Mg 4.85wt%, Cu 0.15wt%, Zn 0.2wt%, Ti
0.15wt%, Zr 0.1wt%, Cr 0.35wt%, Fe 0.4wt%, Si 0.25wt%, surplus are Al and impurity；Prepare aluminium
Ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium alloy element additive containing 85%Mn), 85 chromium agent (the aluminium alloy element containing 85%Cr
Additive)；75 titanium agent (the aluminium alloy element additive containing 75%Ti)；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 520 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, 2.5mm thickness is hot-rolled down to, through 450 DEG C/1h
After annealing, further cold rolling obtains high Mn content Al-Mn-Mg alloy H116 state cold-reduced sheet；
6, the tensile strength 345MPa of high Mn content Al-Mn-Mg alloy H116 state, yield strength 245MP, elongation percentage
17%；Compared with AA30043 alloy, the content of Mn is improved, and refined intermetallic compound phase Al using Cr6(MnFe),
Alloy property is set to be improved.
Comparative example 10: as a comparison, tested by the ingredient of AA5083 alloy: ingredient is Mn 0.7wt%, Mg
4.85wt%, Cu 0.15wt%, Zn 0.2wt%, Ti 0.15wt%, Zr 0.1wt%, Cr 0.35wt%, Fe
0.4wt%, Si 0.25wt%, surplus are Al and impurity；The same the present embodiment of preparation method, 10 product of comparative example is in H116 state
Tensile strength 322MPa, yield strength 239MP, elongation percentage 17%；
Fig. 2 is the solidified structure of AA5083 alloy and the present embodiment high Mn content Al-Mn-Mg alloy under same curing condition
Figure, wherein Fig. 2 (a) is AA5083 Solidification Structure figure；Fig. 2 (b) is the high Mn content Al-Mn-Mg alloy of embodiment preparation
Solidified structure figure；By attached drawing 2 it is recognized that while the content of Mn is greatly improved in the present embodiment, but it is rotten using Cr, refine richness
Mn richness Fe intermetallic compound phase, the intermetallic compound phase Al in the present embodiment6(MnFe) still very tiny；To close
The mechanical property of gold has raising by a relatively large margin.
Embodiment 11
A kind of ingredient of high Mn content Al-Mn-Mg alloy is Mn 2.1wt%, Mg 4.7wt%, Cu by weight percentage
0.15wt%, Cr 0.55wt%, Fe 0.5wt%, Si 0.3wt%, surplus be Al and impurity, wherein impurity content≤
1.0%.
The preparation method of high Mn content Al-Mn-Mg alloy, sequentially includes the following steps:
1, founding: alloy is designed to be divided into Mn 2.1wt%, Mg 4.7wt%, Cu 0.15wt%, Cr 0.55wt%, Fe
0.5wt%, Si 0.3wt%, surplus are Al and impurity；Prepare aluminium ingot, magnesium ingot, metallic silicon, 85 manganese agent (the aluminium conjunction containing 85%Mn
Gold element additive), 85 chromium agent (the aluminium alloy element additive containing 85%Cr)；75 titanium agent (the aluminium alloy element containing 75%Ti
Additive)；
2, aluminium ingot heating fusing being formed into aluminum melt, temperature controls at 750 DEG C, other raw materials is added in aluminum melt, until
It after whole melting sources, stirs evenly, forms alloy melt, temperature is controlled at 720-750 DEG C；Sampling analysis chemical component, such as
It is necessary to adding raw materials again, it is ensured that chemical component is qualified；
3, Promag refining agent is blown into aluminium alloy melt using swiveling jetting device, carries out refining treatment, refining agent
Dosage be aluminium alloy melt total weight 0.35%；Stand 20min after refining treatment, be poured after skimming, in casting process into
The online degasification of row and online addition grain refiner, pour into slab ingot by ceramic wafer filtering；
4, slab ingot is cut into it is suitably sized, carry out Homogenization Treatments, 520 DEG C of Homogenization Treatments temperature, time 12h；
5, the slab ingot epidermis after Homogenization Treatments is removed, then, by cogging, is hot-rolled down to 3mm thickness, is moved back through 450 DEG C/1h
High Mn content Al-Mn-Mg alloy O state (full annealing state) hot rolled plate is obtained after fire；
6, the tensile strength 338MPa of the O state of high Mn content Al-Mn-Mg alloy, yield strength 167MP, elongation percentage 19%.
Claims (7)
1. a kind of high Mn content Al-Mn-Mg alloy, which is characterized in that ingredient is Mn 1.2~2.4%, Mg by weight percentage
0.5~5.5%, Si≤0.7%, Fe≤0.8%, Cu≤0.5%, Cr 0.1~1.0%, Zn≤0.25%, Ti≤0.25%,
Zr≤0.25%, surplus are Al and impurity, wherein impurity content≤1.0%.
2. a kind of high Mn content Al-Mn-Mg alloy according to claim 1, which is characterized in that obtain 0 state through rolling and roll
Panel products 135~338MPa of tensile strength, 62~167MPa of yield strength, elongation percentage 19~25%.
3. a kind of preparation method of high Mn content Al-Mn-Mg alloy described in claim 1, which is characterized in that according to the following steps
It carries out:
(1) prepare Mn, Mg, Si, Fe, Cu, Cr, Zn, Ti, Zr and Al according to the ratio；Wherein, the Al is aluminium ingot；
(2) aluminium ingot heating fusing is formed into aluminum melt, other raw materials is added in aluminum melt, until after whole melting sources, stirring
Uniformly, alloy melt is formed, wherein the aluminum melt temperature controls the alloy melt temperature control at 700~760 DEG C
System is at 700~760 DEG C；
(3) refining treatment is carried out to alloy melt using refining agent, stands 20~40min after refining treatment, is poured into after skimming
Casting, wherein carry out online degasification and online addition grain refiner in the casting process, and poured by ceramic wafer filtering
Form casting；
(4) casting is put into the furnace that homogenizes and carries out Homogenization Treatments, obtained homogenization product, high Mn content is made after cooling
Al-Mn-Mg alloy；Wherein, the Homogenization Treatments temperature be 550~620 DEG C, the time be 8~for 24 hours.
4. a kind of preparation method of high Mn content Al-Mn-Mg alloy according to claim 3, which is characterized in that described
In step (1), Mn is manganese additive or aluminium manganese intermediate alloy, and Mg is magnesium ingot, and Fe is iron additive or ferro-aluminum intermediate alloy, Si are
Metallic silicon or aluminium silicon intermediate alloy, Cu are fine copper, copper additives or aluminum bronze intermediate alloy, and Cr is to close among chrome additive or aluminium chromium
Gold, Zr are zirconium additive or aluminium zirconium hardener, and Zn is zinc ingot metal, and Ti is titanium additives or aluminium titanium intermediate alloy.
5. a kind of preparation method of high Mn content Al-Mn-Mg alloy according to claim 3, which is characterized in that described
In step (3), the dosage of refining agent is the 0.05~0.5% of aluminium alloy melt total weight.
6. a kind of preparation method of high Mn content Al-Mn-Mg alloy according to claim 3, which is characterized in that described
In step (3), online degasification is to be sprayed into argon gas in aluminum water using the online depassing unit of SNIF, and argon flow is 3~5m3/h。
7. a kind of preparation method of high Mn content Al-Mn-Mg alloy according to claim 3, which is characterized in that described
In step (3), the online grain refiner that adds is that Al-5Ti-1B are passed through in aluminium alloy melt using wire feeder, Al-5Ti-
1B additive amounts are 0.5~2.0kg/t aluminium alloy melt.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI674324B (en) * | 2019-03-14 | 2019-10-11 | 中國鋼鐵股份有限公司 | Method for manufacturing aluminum-manganese alloy |
| CN110408819A (en) * | 2019-07-29 | 2019-11-05 | 银邦金属复合材料股份有限公司 | A kind of preparation method of inflation type water-cooled plate and composite board used |
| CN111690843A (en) * | 2020-07-08 | 2020-09-22 | 沈阳航空航天大学 | High Fe content Al-Fe-Mn alloy for kitchen ware and its making method |
| CN111690844A (en) * | 2020-07-08 | 2020-09-22 | 沈阳航空航天大学 | Eutectic Al-Fe-Mn-Si-Mg die casting alloy and preparation method and application thereof |
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| CN108300907A (en) * | 2018-02-10 | 2018-07-20 | 沈阳航空航天大学 | A kind of Al-Mn-Si-Mg alloy materials and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI674324B (en) * | 2019-03-14 | 2019-10-11 | 中國鋼鐵股份有限公司 | Method for manufacturing aluminum-manganese alloy |
| CN110408819A (en) * | 2019-07-29 | 2019-11-05 | 银邦金属复合材料股份有限公司 | A kind of preparation method of inflation type water-cooled plate and composite board used |
| CN111690843A (en) * | 2020-07-08 | 2020-09-22 | 沈阳航空航天大学 | High Fe content Al-Fe-Mn alloy for kitchen ware and its making method |
| CN111690844A (en) * | 2020-07-08 | 2020-09-22 | 沈阳航空航天大学 | Eutectic Al-Fe-Mn-Si-Mg die casting alloy and preparation method and application thereof |
| CN111690844B (en) * | 2020-07-08 | 2021-12-31 | 沈阳航空航天大学 | Eutectic Al-Fe-Mn-Si-Mg die casting alloy and preparation method and application thereof |
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