CN108796312A - A kind of preparation method of the aluminium alloy containing spherical nanometer phase containing Fe - Google Patents
A kind of preparation method of the aluminium alloy containing spherical nanometer phase containing Fe Download PDFInfo
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- CN108796312A CN108796312A CN201810777832.2A CN201810777832A CN108796312A CN 108796312 A CN108796312 A CN 108796312A CN 201810777832 A CN201810777832 A CN 201810777832A CN 108796312 A CN108796312 A CN 108796312A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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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
- C22C1/026—Alloys based on aluminium
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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
- 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
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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Abstract
A kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy, belongs to aluminum alloy materials processing technique field；Method：1) raw material is subjected to melting；2) melt is subjected to continuous rheo-extrusion, prepares aluminium alloy rod；3) aluminium alloy rod is heat-treated；The present invention combines continuous rheo-extrusion and heat-treating methods prepare the aluminium alloy containing spherical nano-scale phase containing Fe, and the content of the Fe elements in aluminium alloy can be 0.01-20%, and there is no limit in Fe elements source in alloy；The spherical nanometer phase containing Fe contained in aluminium alloy prepared by the present invention, the mechanical property of aluminium alloy can be significantly improved, and establish good basis for the following process of aluminum alloy materials, Fe elements in aluminium alloy are turned waste into wealth, to eliminate the adverse effect of Fe elements in aluminium alloy metallurgy and production process, and becomes and a kind of new method is had found to the beneficial element of Mechanical Properties of Aluminum Alloys.
Description
Technical field
The invention belongs to aluminum alloy materials processing technique field, it is related to a kind of aluminium alloy containing spherical nanometer phase containing Fe
Preparation method.
Technical background
Application of the aluminium alloy in the manufacturing industry in China is very extensive, from aerospace, navigation, automobile, it is military to
It builds and civilian, the proportion that application of the aluminium alloy in these industries is occupied also will be increasing.However, due to aluminium and
The production of aluminium alloy can be all difficult to avoid that during from raw material, melting and casting introduces molten aluminum by Fe elements, works as aluminium
When Fe contents reach 0.4% in alloy, Fe is easy to the analysis that reaction forms coarse needle bar shape or Chinese character shape with Al in process of setting
Go out phase, this performance hazards that the gold that is involutory is precipitated are very big, in addition, this phase containing Fe in ingot casting can also influence subsequent add
Work deformation process reduces aluminium alloy processing performance, and therefore, the damaging effect for eliminating Fe elements is all aluminium alloy material all the time
Expect one of the important directions of research.Currently, the method for eliminating the harm of Fe elements is broadly divided into two kinds, a kind of method is pure
In aluminum smelting technology, by physics, metallurgy and Mechanical Method eliminate molten aluminum in Fe elements, such as gravitational settling, centrifugation or ionization separation with
And filtration method, these method and processes are complicated, energy consumption is high, are not suitable for large-scale industrial production.Another kind is aluminum alloy materials
The adverse effect of Fe elements is eliminated in production process by way of alloying, such as adds Mn, Sr, Cr, Co, Be in the alloy
With the elements such as Mo, interaction is occurred with Fe elements by alloying element and achievees the effect that refinement, rotten or reduce phase containing Fe.
In patent CN107794390A, Mn and B element are added simultaneously in aluminium alloy, promotes B to react with Fe to form rich Fe phases and sink to
For furnace bottom to eliminate Fe elements, this method can be to eliminate Fe phases in a certain range, but has to introduce other in the alloy
Unnecessary element improves aluminium alloy production cost.It proposes to add multiple elements design in aluminium alloy in patent CN103820683A
Fining modifier includes Al-Ti-C, Mn, RE, and needle-shaped phase containing Fe is improved as petal-shaped and Chinese character shape, is improved to a certain extent
The pattern of the phase containing Fe, but phase size containing Fe is still larger in alloy, can not completely eliminate the damaging effect of the phase containing Fe.
In conclusion developing a kind of new method, have the characteristics that processing method flow is short, energy-efficient, while can
To eliminate the adverse effect of Fe elements in aluminium alloy, or even by the beneficial member of the mechanical property of the pairs of aluminium alloy of Fe element transformations
Element, will be with great economic implications.
Invention content
The present invention is for the damaging effect for solving Fe elements in aluminum alloy materials, it is proposed that one kind containing Fe containing spherical nanometer
The preparation method of the aluminium alloy of phase.The present invention utilizes sub- fast rapid hardening under its shear action by continuous rheology extrusion forming method
Gu tissue modulation acts on, the aluminium alloy rod of nanometer phase containing Fe containing Dispersed precipitate is prepared, then prepares rheo-extrusion
Aluminium alloy rod is heat-treated, and nodularization occurs for the nanometer phase containing Fe enabled aluminum alloy in bar；This invention removes coarse in aluminium alloy
Containing Fe with respect to alloy mechanical property adverse effect, the comprehensive performance of aluminium alloy is improved by the nanosizing of the phase containing Fe.
The present invention adopts the following technical scheme that：
A kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy, specifically includes following steps：
Step 1, melting：Under protection of argon gas, it is matched according to al alloy component, aluminium raw material is heated to 680-860 DEG C,
Intermediate alloy is added after fusing, keeps the temperature 10min, stirring melt makes Fe elements homogenize, and melt is obtained after degasification slagging-off.
Step 2, rheo-extrusion shapes：680-900 DEG C by melt cast to continuous rheology extruder entrance, prepare straight
Diameter is the aluminium alloy rod of 5-20mm；
Step 3, it is heat-treated：Aluminium alloy rod is heat-treated, heat treatment temperature is 200-550 DEG C, soaking time 2-
8h obtains the aluminium alloy containing spherical nanometer phase containing Fe.
A kind of above-mentioned preparation method containing spherical nanometer phase containing Fe aluminium alloy, wherein：
In the step 1, aluminium alloy be A1-Fe alloys or containing Fe elements A1-Cu, Al-Mn, Al-Si and A1-Mg (-
Si), each element is respectively Fe according to weight percent：0.01-20wt.%, Cu：0.01-10wt.%, Mn：0.01-
2wt.%, Si：0.01-2wt.%, Mg：0.01-7wt.%, surplus are Al and impurity.
In the step 1, business rafifinal that aluminium raw material that when aluminium alloy smelting uses are 99.9%-99.99% or
Secondary aluminium of the Fe contents within 20%.
In the step 1, using crucible resistance stove heat, it is stirred using preheated ceramic stick.
In the step 2, compression roller rotating speed is 20-100r/min.
A kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy of the present invention, compared with prior art, have with
Lower distinguishing feature：
(1) present invention is suitable for Al-Fe alloys and Al-Cu, Al-Mn, Al-Si and Al-Mg (- Si) containing Fe elements
The content of the aluminium alloy of series, the Fe elements in aluminium alloy can be 0.01-20%, and Copper component can be A1-Fe phases, A1-Fe-
Si phases, Al-Fe-Mn phases or other iron content compound phases, and there is no limit can contain in aluminium ingot in Fe elements source in alloy
Some Fe, the Fe elements that the Fe and fusion process that alloying introduces are involved in；
(2) present invention combines aluminium alloy prepared by continuous rheo-extrusion and heat-treating methods, contains spherical nano-scale
Phase containing Fe, acted on using Sub realizable fuzzy matrix tissue modulation under rheo-extrusion shear action, meanwhile, the second phase of nano-scale exists
In heat treatment process due to atoms permeating act on caused by nodularization the phenomenon that, eliminate harmful shadow of Fe elements in aluminium alloy
It rings, and then Fe phase transition is significantly improved into the comprehensive performance of aluminium alloy at favorable factor, be that the follow-up of aluminum alloy materials adds
Work has established good basis；
(3) present invention has found a kind of new side to eliminate the adverse effect of the metallurgy and Fe elements in production process of aluminium alloy
Method.
Description of the drawings
Fig. 1 be the aluminium alloy rod that in the embodiment of the present invention 1 prepared by continuous rheo-extrusion and its before heat treatment after it is micro-
Tissue；Wherein Fig. 1 a, b show SEM the and TEM macrographs of Al-1Fe (wt.%) alloy of rheo-extrusion state, Fig. 1 c institutes
It is shown as SEM tissue of Al-1Fe (wt.%) alloys of rheo-extrusion state after 300 DEG C keep the temperature the heat treatment of 8h.
Specific implementation mode
With reference to embodiment, the invention will be further described：
Embodiment 1
A kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy, specifically includes following steps：
Step 1, melting：It under protection of argon gas, will using crucible electrical resistance furnace according to al alloy component Al-1Fe (wt.%)
The rafifinal of 99.99wt.% is heated to 730 DEG C, and Al-Fe intermediate alloys are added after fusing, keeps the temperature 10min, and stirring melt makes Fe
Element homogenizes, and melt is obtained after degasification slagging-off.
Step 2, rheo-extrusion shapes：To be carried out in melt cast to continuous rheology extruder at 730 DEG C it is continuously extruded, squeeze
Pressure roller rotating speed is 20-100r/min, prepares the aluminium alloy rod of a diameter of 10mm；
Step 3, it is heat-treated：Aluminium alloy rod is heat-treated, heat treatment temperature is 300 DEG C, and soaking time 8h is obtained
Aluminium alloy containing spherical nanometer phase containing Fe.
It, can be with if Fig. 1 a, b show SEM the and TEM macrographs of Al-1Fe (wt.%) alloy of rheo-extrusion preparation
Observe the Al that a large amount of nano-scale is dispersed with inside alloy3Fe phases, and can be seen that Al3The length range of Fe phases is several
Ten nanometers are arrived 500nm.As illustrated in figure 1 c, after 300 DEG C keep the temperature the heat treatment of 8h, the Al inside alloy3The distribution of Fe phases is more
Add uniformly, and nodularization all has occurred, average diameter is about 200nm.This equally distributed nano-scale A13Fe phases can
To significantly improve the comprehensive performance of aluminium alloy.
The aluminium alloy rod of the spherical nanometer phases containing Fe of Al-1%Fe manufactured in the present embodiment, the spherical A1 in rod of metal alloy3Fe phases
Size range be 190-210nm, tensile strength 132MPa, yield strength 120MPa, elongation 30%, conventional cast
The tensile strength of state Al-1Fe (wt.%) alloy is 87.1MPa, yield strength 81.6MPa, and elongation 26.8% compares
Al-1Fe (wt.%) the rod of metal alloy intensity containing spherical nanometer phase containing Fe prepared and plasticity more of the invention are significantly increased.
Embodiment 2
A kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy, specifically includes following steps：
Step 1, melting：It under protection of argon gas, will using crucible electrical resistance furnace according to al alloy component Al-1Fe (wt.%)
The rafifinal of 99.99wt.% is heated to 860 DEG C, and A1-Fe intermediate alloys are added after fusing, keeps the temperature 10min, and stirring melt makes Fe
Element homogenizes, and melt is obtained after degasification slagging-off.
Step 2, rheo-extrusion shapes：To be carried out in melt cast to continuous rheology extruder at 680 DEG C it is continuously extruded, squeeze
Pressure roller rotating speed is 20-100r/min, prepares the aluminium alloy rod of a diameter of 5mm；
Step 3, it is heat-treated：Aluminium alloy rod is heat-treated, heat treatment temperature is 200 DEG C, and soaking time 8h is obtained
Aluminium alloy containing spherical nanometer phase containing Fe.
Al-1Fe (wt.%) rod of metal alloy manufactured in the present embodiment, the spherical A1 in rod of metal alloy3The size range of Fe phases is
The tension of 250-270nm, tensile strength 131.6MPa, elongation 28.8%, as-cast Al-1Fe (wt.%) alloy are strong
Degree be 87.1MPa, yield strength 81.6MPa, elongation 26.8%, compared to it is more of the invention prepare contain containing spherical nanometer
Al-1Fe (wt.%) the rod of metal alloy intensity and plasticity of Fe phases are significantly increased.
Embodiment 3
A kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy, specifically includes following steps：
Step 1, melting：It under protection of argon gas, will using crucible electrical resistance furnace according to al alloy component Al-3Fe (wt.%)
The rafifinal of 99.99wt.% is heated to 730 DEG C, and Al-Fe intermediate alloys are added after fusing, keeps the temperature 10min, and stirring melt makes Fe
Element homogenizes, and melt is obtained after degasification slagging-off.
Step 2, rheo-extrusion shapes：To be carried out in melt cast to continuous rheology extruder at 730 DEG C it is continuously extruded, squeeze
Pressure roller rotating speed is 20-100r/min, prepares the aluminium alloy rod of a diameter of 10mm；
Step 3, it is heat-treated：Aluminium alloy rod is heat-treated, heat treatment temperature is 400 DEG C, and soaking time 6h is obtained
Aluminium alloy containing spherical nanometer phase containing Fe.
Al-1%Fe rod of metal alloy manufactured in the present embodiment, the spherical Al in rod of metal alloy3The size range of Fe phases is 150-
200nm, tensile strength 123.2MPa, elongation 20.4%.The tensile strength of as-cast Al-3Fe (wt.%) alloy
For 102MPa, elongation 16.8%, compared to the Al-3Fe (wt.%) containing spherical nanometer phase containing Fe more of the invention prepared
Rod of metal alloy intensity and plasticity are significantly increased.
Claims (4)
1. a kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy, which is characterized in that specifically include following steps：
Step 1, melting：Under protection of argon gas, it is matched according to al alloy component, aluminium raw material is heated to 680-860 DEG C, fusing
After be added intermediate alloy, keep the temperature 10min, stirring melt makes Fe elements homogenize, and melt is obtained after degasification slagging-off.
Step 2, rheo-extrusion shapes：680-900 DEG C by melt cast to rheo-extrusion machine entrance, prepare a diameter of 5-
The aluminium alloy rod of 20mm；
Step 3, it is heat-treated：Aluminium alloy rod is heat-treated, heat treatment temperature is 200-550 DEG C, and soaking time 2-8h is obtained
To the aluminium alloy containing spherical nanometer phase containing Fe.
2. a kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy according to claim 1, which is characterized in that institute
It states in step 1, aluminium alloy is that Al-Fe alloys or Al-Cu, Al-Mn, Al-Si and Al-Mg (- Si) series containing Fe elements are closed
Gold, each element are respectively Fe according to weight percent：0.01-20wt.%, Cu：0.01-10wt.%, Mn：0.01-2wt.%,
Si：0.01-2wt.%, Mg：0.01-7wt.%, surplus are Al and impurity.
3. a kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy according to claim 1, which is characterized in that institute
It states in step 1, the aluminium raw material that when aluminium alloy smelting uses are that the business rafifinal of 99.9%-99.99% or Fe contents exist
Secondary aluminium within 20%.
4. a kind of preparation method containing spherical nanometer phase containing Fe aluminium alloy according to claim 1, which is characterized in that step
Suddenly in (2), compression roller rotating speed is 20-100r/min.
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| CN201810777832.2A CN108796312A (en) | 2018-07-16 | 2018-07-16 | A kind of preparation method of the aluminium alloy containing spherical nanometer phase containing Fe |
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| CN201810777832.2A CN108796312A (en) | 2018-07-16 | 2018-07-16 | A kind of preparation method of the aluminium alloy containing spherical nanometer phase containing Fe |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040062678A1 (en) * | 2002-03-19 | 2004-04-01 | Spx Corporation | Aluminum alloy |
| CN101224490A (en) * | 2008-01-31 | 2008-07-23 | 东北大学 | Continuous rheological extending forming method for preparing Al alloy tube |
| CN102644011A (en) * | 2012-05-15 | 2012-08-22 | 中国船舶重工集团公司第十二研究所 | Aluminium alloy semi-solid preform body and preparation method thereof |
| CN105274397A (en) * | 2015-10-23 | 2016-01-27 | 东北大学 | High-strength super-heat-resistant aluminum-alloy conductor and preparation method thereof |
-
2018
- 2018-07-16 CN CN201810777832.2A patent/CN108796312A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040062678A1 (en) * | 2002-03-19 | 2004-04-01 | Spx Corporation | Aluminum alloy |
| CN101224490A (en) * | 2008-01-31 | 2008-07-23 | 东北大学 | Continuous rheological extending forming method for preparing Al alloy tube |
| CN102644011A (en) * | 2012-05-15 | 2012-08-22 | 中国船舶重工集团公司第十二研究所 | Aluminium alloy semi-solid preform body and preparation method thereof |
| CN105274397A (en) * | 2015-10-23 | 2016-01-27 | 东北大学 | High-strength super-heat-resistant aluminum-alloy conductor and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| XIANG WANG，ET AL: "Formation Mechanism of Nanoscale Al3Fe Phase in Al-Fe Alloy During Semisolid Forming Process", 《METALLURGICAL AND MATERIALS TRANSACTIONS B》 * |
| 辛达夫: "《当代铝箔生产工艺及装备》", 31 August 2013, 冶金工业出版社 * |
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