CN106947892A - A kind of high tough anticorrosion aluminium material and preparation method thereof - Google Patents
A kind of high tough anticorrosion aluminium material and preparation method thereof Download PDFInfo
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- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- 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
The invention discloses the high tough anticorrosion aluminium material of one kind, 7.93~8.92wt% silicon, 1.98~2.11wt% copper, 0.001~0.02wt% manganese, 0.001~0.02wt% magnesium, 0.005~0.23wt% zinc, 0.182~0.62wt% zirconiums and 0.0346~0.0391wt% or 0.0391~0.04wt% strontiums are included.The present invention is on the basis of conventional Al Si Cu systems cast aluminium alloy gold composition design, by adjusting silicon, copper, zirconium and the content of strontium, the silicon phase in aluminium alloy has efficiently been refined, silicon size is concentrated on submicron order, and draw ratio concentrates on≤2, make its material impact toughness >=34.3J/cm2, tensile strength >=208MPa, elongation after fracture >=6.5%, immersion 93h corrosion rate≤0.049mm/y in the 3.5%NaCl aqueous solution.
Description
Technical field
The present invention relates to field of alloy material, more particularly to a kind of high tough anticorrosion aluminium material, the aluminium is further related to
The preparation method of alloy material.
Background technology
Al-Si-Cu systems cast aluminium alloy gold is current in the industry using most cast aluminium alloy materials, such as country
YL102 (AlSi12), YL112 (AlSi8.5Cu3.5) and YL113 (AlSi811Cu3), Japanese ADC12 (AlSi11Cu3),
ADC10 (AlSi8.5Cu3.5) and U.S. A380 (AlSi8.5Cu3.5) etc., these alloys have excellent casting character, height
Intensity and preferable corrosion resistance, in various fields such as staircase elevator, vehicle key parts (reducer shell, control arm)
Extensive use, but its toughness, plasticity are relatively low, such as：The intensity of Y112 alloys (GB/T15115-94) is 240MPa, and elongation percentage is only
1%.If further improving reliability and lightweight level that its plasticity will undoubtedly improve product.So far, it is right both at home and abroad
Casting is good, obdurability is high, good corrosion resistance cast aluminium alloy material has all carried out numerous studies, but impact flexibility >=
34.3J/cm2, tensile strength >=208MPa, elongation after fracture >=6.5%, the immersion 93h corrosion in the 3.5%NaCl aqueous solution
There is not been reported for speed≤0.049mm/y cast aluminium alloy material.
As Chinese patent CN101798649A discloses 6013 type aluminium alloys of a kind of zirconium and microalloyed with strontium, mainly by
Aluminium, 1.22~1.52% magnesium, 0.90~1.15% silicon, 0.804~1.04% copper, 0.451~0.661% manganese,
0.311~0.135% zinc, 0.0915~0.135% zirconium and 0.0157~0.0391% strontium composition；The preparation of the alloy
Method is：Al-Cu intermediate alloys, Al-Si intermediate alloys, Al-Mn intermediate alloys, the conjunction of Al-Zr centres are added after pure Al is melted
Gold, Al-Sr intermediate alloys, pure Mg, pure Zn, after adding carbon trichloride refining after its thawing, remove slag after standing 5~10min of insulation
And ingot of casting.The invention alloy rigidity is 156.0~159.1HV, and anti intercrystalline corrosion performance is in level Four, anti-strip corrosivity
PB grades can be not less than.The preparation method for the micro alloyed aluminium alloy that the invention is provided is that the invention provides certain guidance think of
Road, still, compared to the present invention, aluminium alloy prepared by the invention can not show a candle to prepared by the present invention in terms of obdurability and plasticity
Aluminium alloy.
And for example Chinese patent CN103572111A discloses a kind of high-toughness casting aluminium alloy, its composition percentage by weight
Than for：Si：6.5~7.50%, Mg：0.3~0.45%, Sr：0.1~0.2%, Cu≤0.1%, Cr：0.02%th, Ti≤
0.2%th, Mn≤0.5%, Zn≤0.05%, Fe≤0.12%, surplus is Al.Its manufacture method comprises the following steps：Melt first
Aluminium metallurgy material, removes waste residue；Temperature is risen to 780 DEG C, Sr is added；Temperature of aluminum liquid is adjusted to 740 DEG C of degasification 30 minutes；Temperature is dropped
To 690 DEG C of cast temperature；Mould is poured into be cast；Aluminium alloy castings is handled through artificial aging.It is high-strength that the invention is provided
Tough cast aluminium alloy gold tensile strength is 250MPa, and elongation is 5%, Brinell hardness 80HBW.And the present invention provide it is high tough resistance to
Corrode aluminum alloy materials, its elongation is substantially better than the invention.
The content of the invention
To overcome the problem of cast aluminium alloy material toughness and plasticity are low, corrosion resistance is not high present in prior art,
The invention provides high tough anticorrosion aluminium material of one kind and preparation method thereof.
A kind of high tough anticorrosion aluminium material, comprising master alloying element aluminum, silicon and copper, micro alloying element manganese,
Magnesium and zinc, while adding trace zirconium and strontium element progress combined microalloying, it is characterised in that：Silicon in the master alloying element
Content is 7.93~8.92wt%, and copper content is 1.98~2.11wt%；In the micro alloying element manganese content be 0.001~
0.02wt%, content of magnesium be 0.001~0.02wt%, Zn content be 0.005~0.23wt%, zirconium content be 0.182~
0.62wt%, content of strontium is 0.0346~0.0391wt% or 0.0391~0.04wt%, and surplus is aluminium.
In some embodiments, silicone content is 8.21~8.92wt% in the master alloying element, and copper content is
1.98~2.08wt%；In the micro alloying element manganese content be 0.001~0.02wt%, content of magnesium be 0.001~
0.02wt%, Zn content be 0.005~0.23wt%, zirconium content be 0.32~0.62wt%, content of strontium be 0.0346~
0.0391wt%, surplus is aluminium.
In some embodiments, silicone content is 8.61~8.92wt% in the master alloying element, and copper content is
1.98~2.04wt%；In the micro alloying element manganese content be 0.001~0.02wt%, content of magnesium be 0.001~
0.02wt%, Zn content be 0.005~0.23wt%, zirconium content be 0.55~0.62wt%, content of strontium be 0.0391~
0.04wt%, surplus is aluminium.
In some embodiments, silicone content is 8.92wt% in the master alloying element, and copper content is 1.98wt%；
Manganese content is 0.001~0.02wt% in the micro alloying element, and content of magnesium is 0.001~0.02wt%, and Zn content is
0.005~0.23wt%, zirconium content is 0.62wt%, and content of strontium is 0.04%, and surplus is aluminium.
In some embodiments, the high tough anticorrosion aluminium material impact toughness >=34.3J/cm2, tension is strong
Degree >=208MPa, elongation after fracture >=6.5% soaks 93h corrosion rate≤0.049mm/y in the 3.5%NaCl aqueous solution,
On the step that can be applicable to space flight, automobile and escalator.
A kind of preparation method of high tough anticorrosion aluminium material, it is characterised in that：Comprise the following steps：
Step one：High temperature melt, makes aluminium be melted into aluminium liquid；
Step 2：Alloy element Si, Cu, Zr, Sr, Mn, Mg and Zn are added, the final content of its each element is met proportioning
It is required that；
Step 3：Remove waste residue, cooling exhaust；
Step 4：Cast molding.
In some embodiments, in the step 2 Adding Way of alloy element in the way of contained aluminium-base intermediate alloy
Add, wherein, Al-Si intermediate alloy contents 15.86~17.84wt%, Si mass percent are 50%；Closed in the middle of Al-Cu
Gold content 5.66~6.03wt%, Cu mass percent are 35%；Al-Zr intermediate alloy contents 1.86~6.33wt%, Zr
Mass percent be 9.8%；Al-Sr 0.23~0.257wt% of intermediate alloy content or 0.257~0.263wt%, Sr matter
It is 15.2% to measure percentage；Al-Mg intermediate alloy contents 0.019~0.39wt%, Mg mass percent are 5.1%；Al-Mn
Intermediate alloy content 0.016~0.33wt%, Mn mass percent are 6%；Al-Zn intermediate alloys 0.065~
3.067wt%, Zn mass percent are 7.6%.
In some embodiments, a kind of high temperature melt temperature of the step is drop in 750~800 DEG C, the step 3
Warm delivery temperature is 700~750 DEG C, and the time is 20~30min.
In some embodiments, the step 4 kind cast molding includes casting solidification and post processing processing, casting temperature
Spend for 680~740 DEG C, setting time control is 1~3min；Post processing is processed as the processing of aluminum alloy surface flaw, wraps successively
Include annealing and temper.
Compared with prior art, a kind of high tough anticorrosion aluminium material that the present invention is provided and preparation method thereof is produced
Beneficial effect be：
First, a kind of high tough anticorrosion aluminium material that the present invention is provided and preparation method thereof, in conventional Al-Si-Cu
On the basis of being cast aluminium alloy gold composition design, by adjusting silicone content to 7.93~8.92wt%, copper content to 1.98~
2.11wt%, while adding the strontium of 0.182~0.62wt% zirconium, 0.0346~0.0391wt% or 0.0391~0.04wt%
Combined microalloying is carried out, while aluminium alloy casting character (mobility) is not reduced, the silicon in aluminium alloy has efficiently been refined
Phase, makes silicon size concentrate on submicron order, and draw ratio concentrates on≤2, and the toughness of aluminium alloy, plasticity and resistance to greatly improved
Corrosivity, meanwhile, the intensity of alloy is also improved, the impact of performance with highly significant.
2nd, a kind of high tough anticorrosion aluminium material that the present invention is provided and preparation method thereof, the Cast aluminium alloy of acquisition
Its golden breakthrough performance International Standard, is detected through mechanical industry quality of materials inspection center：Its impact flexibility >=34.3J/
cm2, tensile strength >=208MPa, elongation after fracture >=6.5%, in the 3.5%NaCl aqueous solution soak 93h corrosion rate≤
0.049mm/y, wherein elongation after fracture are that other materials is incomparable, can significantly improve aluminum alloy materials obdurability and can
Plasticity.
3rd, a kind of high tough anticorrosion aluminium material that the present invention is provided and preparation method thereof, what is prepared is high-strength
Tough anticorrosion aluminium material can prepare more light-weighted product, can be widely applied to escalator, automobile, aviation etc.
Industrial circle, to mitigate the weight of staircase, automobile, spacecraft, so as to reduce the energy consumption of staircase, automobile, spacecraft, and improves it
Reliability.
4th, a kind of high tough anticorrosion aluminium material for providing of the present invention and preparation method thereof, by theory analysis,
JMatPro design of material software calculate and experimental study, research master alloying element (Si, Cu), micro alloying element (Zr, Sr,
Mn, Mg, Zn) and its content to high tough anticorrosion aluminium casting character (mobility), tissue, mechanical property influence rule
Rule, accurate guidance is provided to formulate experimental program, is provided to ensure to obtain the excellent as-cast structure that silicon is mutually tiny, alloy is fine and close
Strong data are supported and performance guarantee.
Brief description of the drawings
Fig. 1 is the microstructure of the high tough anticorrosion aluminium of present disclosure；
Fig. 2 is fracture apperance of the high tough anticorrosion aluminium of present disclosure in impact flexibility；
Fig. 3 is fracture apperance of the high tough anticorrosion aluminium of present disclosure in stretching.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific embodiment only to explain the present invention, is not intended to limit the present invention.
The present invention discloses the high tough anticorrosion aluminium of one kind, master alloying element aluminum, silicon and copper, microalloying are included
Element manganese, magnesium and zinc, while adding trace zirconium and strontium element progress combined microalloying.As the inventive point of the present invention,
Silicone content is 7.93~8.92wt% in the master alloying element, and copper content is 1.98~2.11wt%；The microalloying
In element manganese content be 0.001~0.02wt%, content of magnesium be 0.001~0.02wt%, Zn content be 0.005~
0.23wt%, zirconium content be 0.182~0.62wt%, content of strontium be 0.0346~0.0391wt% or 0.0391~
0.04wt%, surplus is aluminium.The present invention is on the basis of conventional Al-Si-Cu systems cast aluminium alloy gold composition design, by adjusting silicon
Content is to 7.93~8.92wt%, copper content to 1.98~2.11wt%, while 0.182~0.62wt% zirconium is added,
0.0346~0.0391wt% or 0.0391~0.04wt% strontium carries out combined microalloying, is not reducing aluminium alloy castability
While energy (mobility), the silicon phase in aluminium alloy has efficiently been refined.
Performance characterization and test are carried out to the high tough anticorrosion aluminium obtained by above-mentioned embodiment, it is specific as follows：
Pass through optics Electronic Speculum, the surface microscopic tissue of the high tough anticorrosion aluminium of observation gained, as a result as shown in figure 1, can by Fig. 1
Know, silicon phase size concentrates on submicron order, and draw ratio concentrates on≤2.Pass through surface sweeping Electronic Speculum, the high tough corrosion resistant of observation gained
Fracture apperance of the aluminium alloy in impact flexibility is lost, as a result as shown in Fig. 2 as shown in Figure 2, high tough anticorrosion aluminium material
Fracture in impact flexibility is in the typical ductile rupture pattern of dimple feature；The high tough anticorrosion aluminium of observation gained is being drawn
Fracture apperance when stretching, as a result as shown in figure 3, from the figure 3, it may be seen that fracture of the high tough anticorrosion aluminium material in stretching
In the typical ductile rupture pattern of dimple feature；Corrosion test is carried out to high tough anticorrosion aluminium：Sample is put into temperature
To carry out observing after 93 hours soak tests in 3.5% sodium chloride solution of (37 ± 2) DEG C, it is found that specimen surface has white corrosion
Thing, weighs after removing erosion, and the uniform corrosion rate for drawing sample is 0.049mm/y.High tough anticorrosion aluminium is entered
Row tensile property is tested, and method of testing is with reference to GB/T228.1-2010, and test result is as shown in table 1, as shown in Table 1, its tension
Intensity >=208MPa, elongation after fracture >=6.5%, regulation plastic elongation intensity >=88MPa.High tough anticorrosion aluminium is entered
Row impact property is tested, and method of testing is with reference to GB/T229-2007, and as shown in table 2, as shown in Table 2, its impact is tough for test result
Property >=34.3J/cm2。
The high tough anticorrosion aluminium tensile property test of table 1
| Detection project | 1# | 2# | 3# | 4# | 5# |
| Tensile strength (MPa) | 208 | 208 | 211 | 208 | 209 |
| Elongation after fracture (%) | 6.7 | 6.5 | 7.1 | 7.8 | 6.6 |
| Provide plastic elongation intensity (MPa) | 88 | 89 | 90 | 93 | 88 |
The high tough anticorrosion aluminium impact property test of table 2
In summary, the tough of aluminium alloy greatly improved in the high tough anticorrosion aluminium material obtained by present invention preparation
Property, plasticity and corrosion resistance, specifically, the high tough anticorrosion aluminium material impact toughness >=34.3J/cm2, tension is strong
Degree >=208MPa, elongation after fracture >=6.5% soaks 93h corrosion rate≤0.049mm/y in the 3.5%NaCl aqueous solution,
Wherein elongation after fracture is that other materials is incomparable, can significantly improve the obdurability and plasticity of aluminum alloy materials, is obtained
High tough its breakthrough performance of anticorrosion aluminium International Standard.
On the basis of above-mentioned embodiment, tri- comparative examples of 1-3 are specifically described the height by the following examples
Influence of the tough anticorrosion aluminium each element content to material property.
Embodiment 1：
Silicone content is 8.21~8.92wt% in the master alloying element, and copper content is 1.98~2.08wt%；It is described
In micro alloying element manganese content be 0.001~0.02wt%, content of magnesium be 0.001~0.02wt%, Zn content be 0.005~
0.23wt%, zirconium content is 0.32~0.62wt%, and content of strontium is 0.0346~0.0391wt%, and surplus is aluminium.
High tough anticorrosion aluminium material impact toughness >=38.4J/cm that the embodiment is obtained2, tensile strength >=
210MPa, elongation after fracture >=6.8% soaks 93h corrosion rate≤0.047mm/y in the 3.5%NaCl aqueous solution.
Embodiment 2：
Silicone content is 8.61~8.92wt% in the master alloying element, and copper content is 1.98~2.04wt%；It is described
In micro alloying element manganese content be 0.001~0.02wt%, content of magnesium be 0.001~0.02wt%, Zn content be 0.005~
0.23wt%, zirconium content is 0.55~0.62wt%, and content of strontium is 0.0391~0.04wt%, and surplus is aluminium.
High tough anticorrosion aluminium material impact toughness >=39.1J/cm that the embodiment is obtained2, tensile strength >=
209MPa, elongation after fracture >=7.1% soaks 93h corrosion rate≤0.045mm/y in the 3.5%NaCl aqueous solution.
Embodiment 3：
Silicone content is 8.92wt% in the master alloying element, and copper content is 1.98wt%；The micro alloying element
Middle manganese content is 0.001~0.02wt%, and content of magnesium is 0.001~0.02wt%, and Zn content is 0.005~0.23wt%, zirconium
Content is 0.62wt%, and content of strontium is 0.04%, and surplus is aluminium.
High tough anticorrosion aluminium material impact toughness >=40.1J/cm that the embodiment is obtained2, tensile strength >=
211MPa, elongation after fracture >=7.8% soaks 93h corrosion rate≤0.042mm/y in the 3.5%NaCl aqueous solution.
Three of the above embodiment, the content to master alloying elemental silicon and copper is further optimized, while to micro-
The content of alloy element zirconium and strontium is also further optimized, by a series of detections, has obtained high tough corrosion-resisting aluminium
Impact flexibility, tensile strength, elongation after fracture and the corrosion speed that 93h is soaked in the 3.5%NaCl aqueous solution of alloy material
Rate.Found by test result, when silicone content is 8.92wt% in master alloying element, copper content is 1.98wt%；Microalloying
In element manganese content be 0.001~0.02wt%, content of magnesium be 0.001~0.02wt%, Zn content be 0.005~
0.23wt%, zirconium content is 0.62wt%, and when content of strontium is 0.04%, the high tough anticorrosion aluminium material of gained hits toughness
≥40.1J/cm2, tensile strength >=211MPa, elongation after fracture >=7.8%, the immersion 93h corruption in the 3.5%NaCl aqueous solution
Speed≤0.042mm/y is lost, compared to embodiment before, with optimal implementation result.In production application, this hair
The embodiment of bright offer：Silicone content is 7.93~8.92wt% in master alloying element, and copper content is 1.98~2.11wt%；
In micro alloying element manganese content be 0.001~0.02wt%, content of magnesium be 0.001~0.02wt%, Zn content be 0.005~
0.23wt%, zirconium content is 0.182~0.62wt%, and content of strontium is 0.0346~0.0391wt% or 0.0391~0.04wt%
Target product demand can be met, still, in order to possess the implementation result more optimized, the implementation described in optional embodiment 1-3
Mode or other embodiment within this range, the especially embodiment described in optional embodiment 3.In addition, in preferable shape
Under state, impurity content can be 0 in the high tough anticorrosion aluminium, still, in actual production, in order to avoid some can not
In the factor of control, the high tough anticorrosion aluminium material that provides of the present invention inevitably the control of magazine content≤
Production requirement is can reach in the range of 0.05wt%.
As it is further preferred that in this embodiment of the present invention, passing through theory analysis, JMatPro design of material
Software is calculated and experimental study, is studied master alloying element (Si, Cu), micro alloying element (Zr, Sr, Mn, Mg, Zn) and its is contained
Measure to high tough anticorrosion aluminium casting character (mobility), tissue, mechanical property affecting laws.
Specifically, including following research contents：
(1) research of high tough anticorrosion aluminium cast performance：Pass through fluidity test, research master alloyingization member
The affecting laws of element, micro alloying element and its content to alloy liquid fluidity energy.
(2) research of high tough anticorrosion aluminium material as-cast structure：Pass through light microscope and surface sweeping Electronic Speculum, research
The inner link between factor and As-cast Microstructure such as establishment master alloying element, micro alloying element, founding.
(3) research of high tough anticorrosion aluminium material as cast condition impact flexibility and multi-impulse fatigue performance：Rushed by pendulum
Hit toughness test, multi-impulse fatigue experiment, study high tough anticorrosion aluminium material as-cast tough and multi-impulse fatigue performance and its
Key influence factor (chemical composition, founding, tissue etc.).
(4) high tough anticorrosion aluminium material as cast condition intensity, the research of plasticity：By tension test, research alloy
The key factors such as chemical composition, founding, microstructure are to the intensity of high tough anticorrosion aluminium material, the shadow of elongation percentage
Ring and detected.
(5) research of high tough anticorrosion aluminium material as cast condition decay resistance：By corrosion test, detection is high tough
The decay resistance of anticorrosion aluminium material, chemical composition, founding and the microstructure of further optimized alloy.
By above research contents, the experimental data in very refined high tough anticorrosion aluminium preparation process is
Formulate experimental program and provide accurate guidance, while being also the excellent as-cast aluminum alloy for ensuring to obtain that silicon is mutually tiny, alloy is fine and close
Tissue provides strong data and supported and performance guarantee.
On the basis of above-mentioned embodiment, present invention also offers the system of this high tough anticorrosion aluminium material
Preparation Method, specifically includes following steps：
Step one：Aluminium is put into high temperature furnace and carries out high temperature melt, high temperature melt temperature is 750~800 DEG C；
Step 2：After aluminium liquid is melted into, alloy element Si, Cu, Zr, Sr, Mn, Mg and Zn are sequentially added, makes its each
The final content of element meets ratio requirement；
Step 3：After thawing is sufficiently stirred for, waste residue is removed, then cooling exhaust is until without gas overflowing, cooling row
Temperature degree is 700~750 DEG C, and the time is 20~30min；
Step 4：Finally carry out cast molding, specifically include casting solidification and post processing processing, cast temperature be 680~
740 DEG C, setting time control is 1~3min；Post processing is processed as the processing of aluminum alloy surface flaw, successively including annealing and returning
Fire processing.
Further optimize, the Adding Way of alloy element is added in the way of contained aluminium-base intermediate alloy in the step 2
Enter, wherein, Al-Si intermediate alloy contents 15.86-17.84wt%, Si mass percent are 50%；Al-Cu intermediate alloys contain
5.66~6.03wt% is measured, Cu mass percent is 35%；Al-Zr intermediate alloy contents 1.86~6.33wt%, Zr matter
It is 9.8% to measure percentage；Al-Sr 0.23~0.257wt% of intermediate alloy content or 0.257~0.263wt%, Sr quality hundred
Divide than being 15.2%；Al-Mg intermediate alloy contents 0.019~0.39wt%, Mg mass percent are 5.1%；In the middle of Al-Mn
Alloy content 0.016~0.33wt%, Mn mass percent are 6%；Al-Zn intermediate alloys 0.065~3.067wt%, Zn
Mass percent be 7.6%.In addition, composite aluminum base intermediate alloy is also can select, such as with Al-Si-Mg intermediate alloys, Al-Cu-
The mode of the intermediate alloys such as Mn intermediate alloys is added into aluminium liquid, each element proportioning content in final aluminum alloy materials are ensured
It can be added on the premise of meeting application claims in the way of any a variety of aluminium base combination intermediate alloys.Do not select metal simple-substance
And the use of contained aluminium-base intermediate alloy is that, in order to reduce scaling loss, the intermediate alloy can use conventional method：Such as aluminothermic process dissolves conjunction
Cheng Fa, is voluntarily configured, and can also be bought according to proportioning in market；The feed postition of intermediate alloy can be added disposably
Also another intermediate alloy, preferably latter feed postition can be added after the thawing of former intermediate alloy.
The present invention realizes the research of high tough anticorrosion aluminium material, is prepared for that casting character is excellent, and obdurability is high, resistance to
The good cast aluminium alloy material of corrosive nature.The high tough anticorrosion aluminium material prepared by this method can be prepared into
To more light-weighted product, can be widely applied to the industrial circles such as escalator, automobile, aviation, with mitigate staircase, automobile,
The weight of spacecraft, so as to reduce the energy consumption of staircase, automobile, spacecraft, and improves its reliability.
The preferred embodiments of the present invention have shown and described in described above, as previously described, it should be understood that not office of the invention
Be limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and
Environment, and can be changed in invention contemplated scope described herein by the technology or knowledge of above-mentioned teaching or association area
It is dynamic., then all should be appended by the present invention and the change and change that those skilled in the art are carried out do not depart from the spirit and scope of the present invention
In scope of the claims.
Claims (9)
1. a kind of high tough anticorrosion aluminium material, includes master alloying element aluminum, silicon and copper, micro alloying element manganese, magnesium
And zinc, while adding trace zirconium and strontium element progress combined microalloying, it is characterised in that：Silicon contains in the master alloying element
Measure as 7.93~8.92wt%, copper content is 1.98~2.11wt%；In the micro alloying element manganese content be 0.001~
0.02wt%, content of magnesium be 0.001~0.02wt%, Zn content be 0.005~0.23wt%, zirconium content be 0.182~
0.62wt%, content of strontium is 0.0346~0.0391wt% or 0.0391~0.04wt%, and surplus is aluminium.
2. the high tough anticorrosion aluminium material of one kind according to claim 1, it is characterised in that：The master alloyingization member
Silicone content is 8.21~8.92wt% in element, and copper content is 1.98~2.08wt%；Manganese content is in the micro alloying element
0.001~0.02wt%, content of magnesium is 0.001~0.02wt%, and Zn content is 0.005~0.23wt%, and zirconium content is 0.32
~0.62wt%, content of strontium is 0.0346~0.0391wt%, and surplus is aluminium.
3. the high tough anticorrosion aluminium material of one kind according to claim 2, it is characterised in that：The master alloyingization member
Silicone content is 8.61~8.92wt% in element, and copper content is 1.98~2.04wt%；Manganese content is in the micro alloying element
0.001~0.02wt%, content of magnesium are that 0.001~0.02wt%, Zn content are 0.005~0.23wt%, and zirconium content is 0.55
~0.62wt%, content of strontium is 0.0391~0.04wt%, and surplus is aluminium.
4. the high tough anticorrosion aluminium material of one kind according to claim 3, it is characterised in that：The master alloyingization member
Silicone content is 8.92wt% in element, and copper content is 1.98wt%；In the micro alloying element manganese content be 0.001~
0.02wt%, content of magnesium is 0.001~0.02wt%, and Zn content is 0.005~0.23wt%, and zirconium content is 0.62wt%, strontium
Content is 0.04%, and surplus is aluminium.
5. a kind of high tough anticorrosion aluminium material according to claim any one of 1-4, it is characterised in that：The height
Tough anticorrosion aluminium material impact toughness >=34.3J/cm2, tensile strength >=208MPa, elongation after fracture >=6.5%,
93h corrosion rate≤0.049mm/y is soaked in the 3.5%NaCl aqueous solution, the ladder of space flight, automobile and escalator is can be applicable to
In level.
6. a kind of preparation method of the high tough anticorrosion aluminium material described in claim 1, it is characterised in that：Including following
Step：
Step one：High temperature melt, makes aluminium be melted into aluminium liquid；
Step 2：Alloy element Si, Cu, Zr, Sr, Mn, Mg and Zn are added, the final content of its each element is met proportioning will
Ask；
Step 3：Remove waste residue, cooling exhaust；
Step 4：Cast molding.
7. a kind of preparation method of high tough anticorrosion aluminium material according to claim 6, it is characterised in that：It is described
The Adding Way of alloy element is added in the way of contained aluminium-base intermediate alloy in step 2, wherein, Al-Si intermediate alloy contents
15.86~17.84wt%, Si mass percent are 50%；Al-Cu intermediate alloy contents 5.66~6.03wt%, Cu matter
It is 35% to measure percentage；Al-Zr intermediate alloy contents 1.86~6.33wt%, Zr mass percent are 9.8%；In Al-Sr
Between 0.23~0.257wt% of alloy content or 0.257~0.263wt%, Sr mass percent be 15.2%；In the middle of Al-Mg
Alloy content 0.019~0.39wt%, Mg mass percent are 5.1%；Al-Mn intermediate alloys content 0.016~
0.33wt%, Mn mass percent are 6%；Al-Zn intermediate alloys 0.065~3.067wt%, Zn mass percent is
7.6%.
8. a kind of preparation method of high tough anticorrosion aluminium material according to claim 6, it is characterised in that：It is described
A kind of high temperature melt temperature of step is 750~800 DEG C, and cooling delivery temperature is 700~750 DEG C in the step 3, and the time is
20~30min.
9. a kind of preparation method of high tough anticorrosion aluminium material according to claim 6, it is characterised in that：It is described
The cast molding of step 4 kind includes casting solidification and post processing processing, and cast temperature is 680~740 DEG C, and setting time control is 1
~3min；Post processing is processed as the processing of aluminum alloy surface flaw, successively including annealing and temper.
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| PCT/CN2017/084607 WO2018205287A1 (en) | 2017-05-12 | 2017-05-16 | High-strength and -toughness corrosion-resistant aluminum alloy material and method for fabricating same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107236879A (en) * | 2017-07-31 | 2017-10-10 | 江苏大学 | Zirconium is strontium compound microalloyed and the magnesium alloy chemical Al-Si-Cu-based cast aluminium alloy gold of high-hardness corrosion-resistant and preparation method |
| CN107338374A (en) * | 2017-07-31 | 2017-11-10 | 江苏大学 | The high tough Al Si Cu system's cast aluminium alloy golds and preparation method of Zr, Sr combined microalloying and Mn alloyings |
| CN107385288A (en) * | 2017-07-31 | 2017-11-24 | 江苏大学 | A kind of zirconium is strontium compound microalloyed and the high tough aluminium copper silicon cast aluminium alloy gold and preparation method of kirsite |
| CN107385289A (en) * | 2017-07-31 | 2017-11-24 | 江苏大学 | The high tough corrosion-resistant hypoeutectic Al Si systems cast aluminium alloy gold and preparation method of a kind of Zr and Sr combined microalloyings |
| CN107400809A (en) * | 2017-07-31 | 2017-11-28 | 江苏大学 | The zirconium strontium compound microalloyed Al-Si-Cu-based cast aluminium alloy gold of high tough corrosion-resistant low silicon content and preparation method |
| CN107447137A (en) * | 2017-07-31 | 2017-12-08 | 江苏大学 | The high tough corrosion-resistant Al Si Cu cast aluminium alloy golds and preparation method of a kind of Zr and Sr combined microalloyings |
| CN110607471A (en) * | 2019-08-27 | 2019-12-24 | 江苏大学 | Sr, Zr and Ti ternary composite microalloyed Al-Si-Cu series cast aluminum alloy and preparation method thereof |
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| CN107447137A (en) * | 2017-07-31 | 2017-12-08 | 江苏大学 | The high tough corrosion-resistant Al Si Cu cast aluminium alloy golds and preparation method of a kind of Zr and Sr combined microalloyings |
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| CN110607471B (en) * | 2019-08-27 | 2021-07-20 | 江苏大学 | Sr, Zr and Ti ternary composite microalloyed Al-Si-Cu series cast aluminum alloy and preparation method thereof |
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