CN109371266A - A kind of production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material - Google Patents
A kind of production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material Download PDFInfo
- Publication number
- CN109371266A CN109371266A CN201811480236.4A CN201811480236A CN109371266A CN 109371266 A CN109371266 A CN 109371266A CN 201811480236 A CN201811480236 A CN 201811480236A CN 109371266 A CN109371266 A CN 109371266A
- Authority
- CN
- China
- Prior art keywords
- ingot casting
- system alloy
- high strength
- production method
- strength anti
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- 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
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
- C22F1/043—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 of alloys with silicon as the next major constituent
Abstract
The invention discloses a kind of production methods of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material, belong to technical field of aluminum alloy technology, the chemical composition comprises the following components in percentage by weight of the Al-Mg-Si system alloy are as follows: Si:1.4 ~ 1.8%, Fe:0.4 ~ 0.8%, Cu:0.1 ~ 0.2%, Mn:0.6 ~ 1.5%, Mg:0.7 ~ 1.3%, Cr :≤0.2%, Zn :≤0.1%, Ti :≤0.15%, surplus Al, the sum of each ingredient is 100%, and the mass ratio for controlling Mn/Fe is 1.3 ~ 2.5；Its production method are as follows: melting-ingot casting-ingot casting homogenization-hot extrusion-quenching-timeliness, wherein ingot casting homogenization are as follows: ingot casting is heated to 530 ~ 570 DEG C and keeps the temperature 1 ~ 10h, 400 ~ 450 DEG C then are cooled to the rate no more than 10 DEG C/min, then 180 DEG C or less is cooled to the rate not less than 30 DEG C/min and comes out of the stove.The present invention passes through the improvement of alloying component and production technology, has produced high strength anti-corrosion weldable al-mg-Si system alloy extrusion material.
Description
Technical field
The invention belongs to technical field of aluminum alloy technology, and in particular to a kind of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material
Production method.
Background technique
Although Al-Mg-Si system alloy intensity is generally 300MPa grades, because of its excellent corrosion resisting property and processing forming
Can, can using squeeze method manufacture complex section squeeze wood, be widely used in aerospace, traffic above-ground, building and
Lightweight equipment manufacturing.In order to realize the purpose of efficient, energy-saving and environmental protection, the light-weighted trend of the vehicles is increasingly by then
Pay attention to, therefore, under the premise of keeping anti-corrosion Al-Mg-Si system alloy, solderable and processability, develops the Al-Mg- of higher intensity
Si system alloy has a very important significance.
Currently, mainly using following technical scheme to improve the intensity of Al-Mg-Si-type aluminum alloy: with aluminium alloy second
Based on phase reinforcement theory, the content of Mg, Si, Mn, Cu element in Al-Mg-Si-type aluminum alloy is improved, as shown in table 1, in table 1
Alloy can be divided into three classes:
The common Al-Mg-Si system alloy ingredient design of table 1
(1) 6063,6082 type alloys (Cu element is not more than 0.1wt.% as impurity element) of low copper levels, with
In Al-Mg-Si system alloy based on most typical 6063 alloy, 6082 alloys are obtained by improving Si, Mg, Mn constituent content
More higher than 6063 alloys intensity.
(2) medium copper content 6061,6013 type alloys (Cu element as alloy element, content is 0.15~
0.7wt.%), by improving Si, Mg, Mn, Cu constituent content, intensity is improved, Cu content fluctuation range is big, and controllable intensity mentions
High level.
(3) high copper content 6111,6110 type alloys (Cu element as alloy element, content is 0.5~
1.1wt.%) alloy is also added into Cr, improves Zn element except improving outside intensity by raising Si, Mg, Mn, Cu constituent content
Allowable upper limit value further increase intensity.
The common ground of above-mentioned three classes Al-Mg-Si alloy composition characteristics is that Fe element is treated by impurity, specifies only and does not permit
Perhaps the upper limit value for being more than.Largely studies have shown that in Al-Mg-Si system alloy, improved with Cu constituent content, what intensity improved
Meanwhile welding performance (such as weld strength coefficient) and corrosion resistance (such as intercrystalline corrosion) can be caused to decline, to limit Al-
The application of Mg-Si system alloy is more than 400MPa (referred to as high-strength) especially for intensity, while being had again good anti-corrosion, solderable
It is required with the high combination property of processing forming, and 6 kinds of Al-Mg-Si system alloys in table 1 are not able to satisfy design requirement.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of formulation optimizations, simple process, at low cost
The production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material, is more than 400MPa to prepare intensity, while having both again good
Good anti-corrosion, the solderable Al-Mg-Si system alloy with processing forming.
In order to achieve the above object, the present invention the following technical schemes are provided:
The present invention provides a kind of production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material, the Al-Mg-Si
It is the chemical composition comprises the following components in percentage by weight of alloy are as follows: Si:1.4~1.8wt.%, Fe:0.4~0.8wt.%, Cu:0.1~
0.2wt.%, Mn:0.6~1.5wt.%, Mg:0.7~1.3wt.%, Cr :≤0.2wt.%, Zn :≤0.1wt.%, Ti :≤
0.15wt.%, surplus Al, the sum of each composition by weight percent are 100%, and the mass ratio for controlling Mn/Fe is 1.3~2.5；
The production method of the Al-Mg-Si system alloy squeeze wood are as follows: melting-ingot casting-ingot casting homogenization-hot extrusion-is quenched
Fire-timeliness, the wherein detailed process of ingot casting homogenization are as follows: ingot casting is heated to 530~570 DEG C and keeps the temperature 1~10h, then
400~450 DEG C are cooled to the rate no more than 10 DEG C/min, is then cooled to 180 DEG C with the rate not less than 30 DEG C/min
It comes out of the stove below.
Preferably, the mass ratio of the Mn/Fe is 1.4~1.7.
Preferably, Cr content :≤0.1wt.%, Zn content :≤0.05wt.%, Ti content :≤0.1wt.%.
Preferably, the production method of the Al-Mg-Si system alloy squeeze wood, comprising the following steps:
(1) melting: according to setting ratio ingredient, melting is carried out at a predetermined temperature；
(2) ingot casting: obtaining satisfactory aluminium alloy melt by melting, prepares ingot casting using semicontinuous casting ingot method；
(3) ingot casting homogenization: by ingot casting be heated to 530~570 DEG C and keep the temperature 1~10h, then with no more than 10 DEG C/
The rate of min is cooled to 400~450 DEG C, and it is cold to be then cooled to 180 DEG C or less natures of coming out of the stove with the rate not less than 30 DEG C/min
But, the ingot casting after obtaining homogenization；
(4) hot extrusion: the ingot casting after homogenization obtained by step (2) is heated to 480~530 DEG C, extrusion cylinder temperature is
430~500 DEG C, squeeze wood extruded velocity is not more than 10m/min；
(5) it quenches: entering press quenching device after squeeze wood outflow die hole and be quenched；
(6) timeliness: quenched squeeze wood is heated to 100~200 DEG C in 8h, and keeps the temperature 1~48h and carry out at timeliness
Reason, obtains high strength anti-corrosion weldable al-mg-Si system alloy extrusion material after coming out of the stove.
Preferably, 720~760 DEG C of smelting temperature, dwell temperature is 720~740 DEG C in the step (1).
Preferably, in the step (2), 720~740 DEG C of cast temperature.
Preferably, ingot casting is heated to 550 DEG C and keeps the temperature 4h, then with the rate of 5 DEG C/min in the step (3)
400 DEG C are cooled to, then 100 DEG C is cooled to the rate of 60 DEG C/min and comes out of the stove.
Preferably, ingot casting is heated to 500 DEG C, and extrusion cylinder temperature is 480 DEG C, and squeeze wood squeezes out speed in the step (4)
Degree is 6m/min.
Preferably, quenching medium is one of water, water mist, wind or a variety of in the step (5).
Preferably, quenching medium is water in the step (5).
Preferably, being heated to 170 DEG C in the step (6), and keeps the temperature 9h and carry out ageing treatment.
The production method of high strength anti-corrosion weldable al-mg-Si system of the present invention alloy extrusion material, have studied Mg, Si, Fe,
Influence of the elements such as Mn, Cu to Al-Mg-Si system alloy organization and performance is squeezed in conjunction with Al-Mg-Si system alloy in industrial production
The technological process of production of material provides a kind of production method of high strength anti-corrosion weldable aluminium squeeze wood.Currently, most of aluminium close
Fe element is classified as impurity in gold, and its content is optimized with proportion using Fe element as alloy element by the present invention,
Meanwhile the content of Si, Mg, Cu, Mn element in Al-Mg-Si system alloy is further verified and its with comparing organization and performance
Regulating and controlling effect mechanism, including following two aspect:
(1) in terms of alloying component:
Fe content is 0.4~0.8wt.% in the present invention, this is the key that place of the invention.For the prior art,
Fe element is impurity element in most of aluminium alloys, needs its upper limit of strict control.But it is of the invention the study found that in Al-
In Mg-Si system alloy graining process, Fe element forms the non-equilibrium crystalline phase of β-AlFeSi of sheet with superfluous Si first；?
During subsequent ingot casting homogenization, due to the effect of Mn element, β → α phase transition occurs for Fe-riched phase β-AlFeSi, makes former thick
Non-equilibrium β-AlFeSi the phase transition of big sheet is granular α-AlFeMnSi phase, and is significantly refined, and generates alloy aobvious
The disperse phase of work is strengthened, to improve alloy strength.
In the present invention, control Mn/Fe content ratio is set in 1.3~2.5 ranges, this is also key of the invention
Place.In the prior art, the content ratio of Mn, Fe in Al-Mg-Si system alloy are not defined, the present invention is exactly based on
This restriction establishes the connection of the elements such as Mn, Fe, reduces the difficulty for regulating and controlling alloy microstructure by alloy element.
In the timing of Fe content one, Mn content is too low or excessively high can all have adverse effect on to alloy.When Mn content is too low, on the one hand,
During the ingot casting homogenization of finite time, β → α phase transition mutually cannot fully occur for β-AlFeSi, to cannot disappear
Except β-AlFeSi phase bring adversely affects, while although remaining to form part α-AlFeMnSi phase, these α-in alloy
AlFeMnSi phase cannot be refined sufficiently, it is difficult to the disperse second phase particles of submicron order be formed, so that influencing disperse phase strengthens effect
Fruit.On the other hand, Mn element largely consumes during β → α phase transition, it is difficult to play the effect of refinement crystal grain；Work as Mn
When too high levels, MnAl is easily caused6Mutually generation is reunited or is roughened, and is equally also difficult to play what inhibition recrystallization was grown up with crystal grain
Effect.
In the present invention, Cu content is 0.1~0.2wt.%.In the prior art, Al- is improved using the method for improving Cu content
Mg-Si system alloy strength, corrosion resistance and solderability are often poor.Cu element generally forms Q phase in the alloy
(AlMgSiCu) and in grain boundaries one layer of continuous richness Cu element thin film is generated, although the continuous richness Cu element of Q phase and crystal boundary
Film can generate biggish strengthening effect, but its intergranular corrosion resistance and weld crack tendency can significantly improve.Therefore the present invention is right
The range of Cu element is limited to 0.1~0.2wt.%, this be based on make alloy simultaneously and have high intensity, corrosion resistance and solderability into
Capable is preferred.
In alloying component of the present invention, upper limit value regulation is only made to Cr, Zn, Ti element, is based on aluminium alloy more
The accumulation that impurity content generates during secondary recycling, and contained using the element that grain refiner containing Ti may cause
Amount variation generates certain optimization designs for adversely affecting and making to aluminum alloy organization of the present invention and performance.
(2) in terms of processing technology:
The production method of Al-Mg-Si system alloy squeeze wood of the present invention produces Al-Mg-Si system alloy with the prior art
The process flow of squeeze wood is identical, and melting, ingot casting, hot extrusion, quenching, aging technique are also in the achievable range of the prior art
It is interior, it is critical that ingot casting homogenization.Ingot casting homogenization technique of the present invention are as follows: ingot casting is heated to 530
~570 DEG C and 1~10h of heat preservation, 400~450 DEG C then are cooled to the rate no more than 10 DEG C/min, then to be not less than
30 DEG C/min of rate is cooled to 180 DEG C or less and comes out of the stove.
The Al-Mg-Si system alloy of composition range of the present invention, in the cooling procedure of ingot casting homogenization technique, pole
Mg is easily precipitated2Si phase, if cooling rate is too small, the Mg of precipitation2Si phase is excessive, cannot all dissolve, will increase in hot extrusion
Resistance of deformation reduces the intensity of squeeze wood；If cooling rate is too big in the cooling procedure of ingot casting homogenization, ingot casting will lead to
Cracking, drops low-alloyed processing forming, therefore, has made above-mentioned optimization design to the cooling procedure of ingot casting homogenization technique.
In conclusion the present invention passes through the improvement of alloying component and production technology, coordinate because of Al-Mg-Si system alloy
High intensity and corrosion resistance that ingredient and tissue cause, weldability, the contradiction between processing forming, can produce high strength anti-corrosion can
Weld Al-Mg-Si system alloy squeeze wood.
Compared with prior art, advantageous effects of the invention are as follows:
(1) production method of Al-Mg-Si system alloy squeeze wood of the present invention avoids Fe first by limiting Mn/Fe ratio
Detrimental effect caused by element, to convert alloy element for the Impurity Fe in aluminium alloy.
(2) production method of Al-Mg-Si system alloy squeeze wood of the present invention, using Fe, Si element as alloying member
Element, therefore, aluminium alloy of the present invention can not only be prepared with the high electrolytic aluminium of Fe, Si content, can also be contained using Fe, Si impurity
It measures high secondary bauxite resource to prepare, not only contributes to the cost of material for reducing Al-Mg-Si system alloy, be also the efficient of aluminium alloy
It recycles and provides technical solution.
(3) simple, at low cost, the easy implementation of preparation process of the present invention passes through the casting of optimization design ingot casting homogenization technique
Ingot comes out and cools down rate, ensure that the processing forming and intensity of aluminium alloy of the present invention.
Detailed description of the invention
Fig. 1 is the scanning electron microscope (SEM) photograph of ingot casting before homogenization in embodiment 1.
Fig. 2 is the scanning electron microscope (SEM) photograph of ingot casting after homogenization in embodiment 1.
Fig. 3 is the scanning electron microscope (SEM) photograph of 1 gained high strength anti-corrosion weldable al-mg-Si system alloy extrusion material of embodiment.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, rather than whole embodiments, based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides a kind of production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material, the Al-Mg-Si
It is the chemical composition comprises the following components in percentage by weight of alloy are as follows: Si:1.4~1.8wt.%, Fe:0.4~0.8wt.%, Cu:0.1~
0.2wt.%, Mn:0.6~1.5wt.%, Mg:0.7~1.3wt.%, Cr :≤0.2wt.%, Zn :≤0.1wt.%, Ti :≤
0.15wt.%, surplus Al, the sum of each composition by weight percent are 100%, and the mass ratio for controlling Mn/Fe is 1.3~2.5；
The production method of the Al-Mg-Si system alloy squeeze wood, comprising the following steps:
(1) melting: according to setting ratio ingredient, melting is carried out at 720~760 DEG C, dwell temperature is 720~740 DEG C；
(2) ingot casting: obtaining satisfactory aluminium alloy melt by melting, prepares ingot casting using semicontinuous casting ingot method,
720~740 DEG C of cast temperature；
(3) ingot casting homogenization: by ingot casting be heated to 530~570 DEG C and keep the temperature 1~10h, then with no more than 10 DEG C/
The rate of min is cooled to 400~450 DEG C, and it is cold to be then cooled to 180 DEG C or less natures of coming out of the stove with the rate not less than 30 DEG C/min
But, the ingot casting after obtaining homogenization；
(4) hot extrusion: the ingot casting after homogenization obtained by step (2) is heated to 480~530 DEG C, extrusion cylinder temperature is
430~500 DEG C, squeeze wood extruded velocity is not more than 10m/min；
(5) it quenches: entering press quenching device after squeeze wood outflow die hole and be quenched, quenching medium is
Water；
(6) timeliness: quenched squeeze wood is heated to 100~200 DEG C in 8h, and keeps the temperature 1~48h and carry out at timeliness
Reason, obtains high strength anti-corrosion weldable al-mg-Si system alloy extrusion material after coming out of the stove.
The advantages of to verify high strength anti-corrosion weldable al-mg-Si system alloy extrusion material of the present invention, the detection method of use
Are as follows:
Squeeze wood tensile property: by described in GBT228.1-2010 metal material stretching test part 1 room temperature test method
It is tested and analyzed；
Squeeze wood corrosion among crystalline grains: it is detected by described in GB/T7998-2005 aluminium alloy intercrystalline corrosion measuring method
Analysis, rating number is lower, shows that corrosion resistance is better；
Squeeze wood welding performance: the squeeze wood that different embodiments are obtained carries out MIG weldering under the same conditions, takes weld seam
And base metal test specimen, it is tested and analyzed by GBT228.1-2010, it is as follows to define welding coefficient:
Welding coefficient=button tensile strength/base material tensile strength；
Welding coefficient is higher, shows that welding performance is better.
The present invention program is further elaborated with reference to the accompanying drawings and examples, belongs to the content of prior art range
It is not repeated.
Embodiment 1
The present embodiment produces the squeeze wood (extrusion ratio is about 20) that wall thickness is 5mm, ingredient design are as follows: Si:1.4wt.%,
Fe:0.4wt.%, Cu:0.1wt.%, Mn:0.6wt.%, Mg:0.7wt.%, Cr :≤0.1wt.%, Zn :≤0.05wt.%,
Ti :≤0.1wt.%, surplus Al, the sum of each composition by weight percent are 100%, Mn/Fe=1.5；
Ingot casting homogenization technique are as follows: ingot casting is heated to 530 DEG C and keeps the temperature 10h, it is then cooling with the rate of 5 DEG C/min
To 400 DEG C, 175 DEG C then are cooled to the rate of 60 DEG C/min and is come out of the stove, the performance of gained squeeze wood sees attached list 1.
Wherein attached drawing 1 is the scanning electron microscope micro-organization chart of ingot casting before homogenization in the present embodiment, and attached drawing 2 is this implementation
In example after homogenization ingot casting scanning electron microscope micro-organization chart, attached drawing 3 is the solderable Al- of high strength anti-corrosion obtained by the present embodiment
Alloy extrusion material scanning electron microscope micro-organization chart of Mg-Si system.
From figure 1, it may be seen that second phase particles are in continuous bone shape in ingot casting before homogenization, full-size is reachable
100μm；From attached drawing 2 as it can be seen that after homogenization, second phase particles develop into graininess or rod-short, and significantly refine, second
About 20 μm of phase particle full-size, while visible more sub-micron grade particle, be conducive in subsequent extrusion production process
Secondary phase particle further refines, and forms more submicron order second phase particles；From attached drawing 3 as it can be seen that after squeezing, squeeze wood
Middle second phase particles further refine, and about 5 μm of full-size, while there is submicron order the second phase grain of a large amount of Dispersed precipitates
Son, the submicron order second phase particles of these Dispersed precipitates can generate significant dispersion-strengtherning effect, be conducive to the power of squeeze wood
Learn performance.
Embodiment 2
The present embodiment produces the squeeze wood (extrusion ratio is about 20) that wall thickness is 5mm, ingredient design are as follows: Si:1.8wt.%,
Fe:0.8wt.%, Cu:0.2wt.%, Mn:1.5wt.%, Mg:1.3wt.%, Cr :≤0.1wt.%, Zn :≤0.05wt.%,
Ti :≤0.1wt.%, surplus Al, the sum of each composition by weight percent are 100%, Mn/Fe=1.88；
Ingot casting homogenization technique are as follows: ingot casting is heated to 570 DEG C and keeps the temperature 1h, it is then cooling with the rate of 5 DEG C/min
To 450 DEG C, 175 DEG C or less then are cooled to the rate of 60 DEG C/min and is come out of the stove, the performance of gained squeeze wood sees attached list 1.
Embodiment 3
The present embodiment produces the squeeze wood (extrusion ratio is about 20) that wall thickness is 5mm, ingredient design are as follows: Si:1.5wt.%,
Fe:0.6wt.%, Cu:0.15wt.%, Mn:0.85wt.%, Mg:1.0wt.%, Cr :≤0.1wt.%, Zn :≤
0.05wt.%, Ti :≤0.1wt.%, surplus Al, the sum of each composition by weight percent are 100%, Mn/Fe=1.41；
Ingot casting homogenization technique are as follows: ingot casting is heated to 550 DEG C and keeps the temperature 4h, it is then cooling with the rate of 5 DEG C/min
To 400 DEG C, 100 DEG C then are cooled to the rate of 60 DEG C/min and is come out of the stove, the performance of gained squeeze wood sees attached list 1.
Comparative example 1
This comparative example produces the squeeze wood (extrusion ratio is about 20) that wall thickness is 5mm, ingredient design are as follows: Si:1.5wt.%,
Fe:0.4wt.%, Cu:0.15wt.%, Mn:1.2wt.%, Mg:1.0wt.%, Cr :≤0.1wt.%, Zn :≤
0.05wt.%, Ti :≤0.1wt.%, remaining is Al, Mn/Fe=3.0；
Ingot casting homogenization technique are as follows: ingot casting is heated to 550 DEG C and keeps the temperature 4h, it is then cooling with the rate of 5 DEG C/min
To 400 DEG C, 100 DEG C then are cooled to the rate of 60 DEG C/min and is come out of the stove, the performance of gained squeeze wood sees attached list 1.
From the above, it can be seen that the alloying element of comparative example 1 all meets described in claim 1, but Mn/Fe ratio has exceeded power
Benefit require 1 described in Mn/Fe be 1.3~2.5 range.
Comparative example 2
This comparative example produces the squeeze wood (extrusion ratio is about 20) that wall thickness is 5mm, ingredient design are as follows: Si:1.5wt.%,
Fe:0.6wt.%, Cu:0.15wt.%, Mn:0.85wt.%, Mg:1.0wt.%, Cr :≤0.1wt.%, Zn :≤
0.05wt.%, Ti :≤0.1wt.%, remaining is Al, Mn/Fe=1.41；
Ingot casting homogenization technique are as follows: ingot casting is heated to 550 DEG C and keeps the temperature 4h, it is then cooling with the rate of 5 DEG C/min
To 100 DEG C of furnaces, the performance of gained squeeze wood sees attached list 1.
From the above, it can be seen that alloying element content and the Mn/Fe ratio of comparative example 2 all meet described in claim 1, but cast
Ingot homogeneous heat treatment process does not meet range described in claim 1.
Comparative example 3
This comparative example produces the squeeze wood (extrusion ratio is about 20) that wall thickness is 5mm, ingredient design are as follows: Si:1.5wt.%,
Fe:0.6wt.%, Cu:0.25wt.%, Mn:0.85wt.%, Mg:1.0wt.%, Cr :≤0.1wt.%, Zn :≤
0.05wt.%, Ti :≤0.1wt.%, remaining is Al, Mn/Fe=1.41；
Ingot casting homogenization technique are as follows: ingot casting is heated to 550 DEG C and keeps the temperature 4h, it is then cooling with the rate of 5 DEG C/min
To 400 DEG C, 100 DEG C then are cooled to the rate of 60 DEG C/min and is come out of the stove, the performance of gained squeeze wood sees attached list 1.
From the above, it can be seen that comparative example 3 does not meet Cu:0.1~0.2wt.%'s described in claim 1 except Cu element
Outside range, remaining alloying element content and Mn/Fe ratio, ingot casting homogenization technique are all satisfied range described in claim 1.
Data can be seen that intensity, corrosion resistance, the welding performance of squeeze wood obtained by the embodiment of the present invention from subordinate list 1
General performance be substantially better than comparative example.
The performance of 1~3 gained squeeze wood of 1 Examples 1 to 3 of table and comparative example
| Embodiment | Tensile strength/MPa | Elongation/% | Welding coefficient | Intergranular corrosion resistance grade |
| Embodiment 1 | 410 | 13.5 | 0.75 | 1 |
| Embodiment 2 | 465 | 10.5 | 0.70 | 2 |
| Embodiment 3 | 420 | 12.5 | 0.73 | 1 |
| Comparative example 1 | 360 | 13.5 | 0.75 | 3 |
| Comparative example 2 | 395 | 8.5 | 0.63 | 3 |
| Comparative example 3 | 435 | 10.5 | 0.55 | 4 |
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example.To those of ordinary skill in the art, obtained improvement and change in the case where not departing from the technology of the present invention concept thereof
It changes and also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material, which is characterized in that the Al-Mg-Si
It is the chemical composition comprises the following components in percentage by weight of alloy are as follows: Si:1.4~1.8wt.%, Fe:0.4~0.8wt.%, Cu:0.1~
0.2wt.%, Mn:0.6~1.5wt.%, Mg:0.7~1.3wt.%, Cr :≤0.2wt.%, Zn :≤0.1wt.%, Ti :≤
0.15wt.%, surplus Al, the sum of each composition by weight percent are 100%, and the mass ratio for controlling Mn/Fe is 1.3~2.5；
The production method of the Al-Mg-Si system alloy squeeze wood are as follows: melting-ingot casting-ingot casting homogenization-hot extrusion-quenching-
Timeliness, the wherein detailed process of ingot casting homogenization are as follows: ingot casting is heated to 530~570 DEG C and keeps the temperature 1~10h, then with not
Rate greater than 10 DEG C/min is cooled to 400~450 DEG C, is then cooled to 180 DEG C or less with the rate not less than 30 DEG C/min
It comes out of the stove.
2. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material according to claim 1, which is characterized in that
The mass ratio of the Mn/Fe is 1.4~1.7.
3. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material according to claim 1, which is characterized in that
Cr content :≤0.1wt.%, Zn content :≤0.05wt.%, Ti content :≤0.1wt.%.
4. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material described according to claim 1~any one of 3,
Characterized by comprising the following steps:
(1) melting: according to setting ratio ingredient, melting is carried out at a predetermined temperature；
(2) ingot casting: obtaining satisfactory aluminium alloy melt by melting, prepares ingot casting using semicontinuous casting ingot method；
(3) ingot casting homogenization: being heated to 530~570 DEG C for ingot casting and keep the temperature 1~10h, then no more than 10 DEG C/min's
Rate is cooled to 400~450 DEG C, is then cooled to 180 DEG C or less natural coolings of coming out of the stove with the rate not less than 30 DEG C/min, obtains
Ingot casting after to homogenization；
(4) hot extrusion: being heated to 480~530 DEG C for the ingot casting after homogenization obtained by step (2), and extrusion cylinder temperature is 430~
500 DEG C, squeeze wood extruded velocity is not more than 10m/min；
(5) it quenches: entering press quenching device after squeeze wood outflow die hole and be quenched；
(6) timeliness: quenched squeeze wood is heated to 100~200 DEG C in 8h, and keeps the temperature 1~48h and carry out ageing treatment, out
High strength anti-corrosion weldable al-mg-Si system alloy extrusion material is obtained after furnace.
5. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material according to claim 4, which is characterized in that
In the step (1), 720~760 DEG C of smelting temperature, dwell temperature is 720~740 DEG C.
6. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material according to claim 4, which is characterized in that
In the step (2), 720~740 DEG C of cast temperature.
7. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material according to claim 4, which is characterized in that
In the step (3), ingot casting is heated to 550 DEG C and keeps the temperature 4h, is then cooled to 400 DEG C with the rate of 5 DEG C/min, then with
The rate of 60 DEG C/min is cooled to 100 DEG C and comes out of the stove.
8. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material according to claim 4, which is characterized in that
In the step (4), ingot casting is heated to 500 DEG C, and extrusion cylinder temperature is 480 DEG C, and squeeze wood extruded velocity is 6m/min.
9. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material according to claim 4, which is characterized in that
In the step (5), quenching medium is one of water, water mist, wind or a variety of.
10. the production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material, feature exist according to claim 4
In, in the step (6), be heated to 170 DEG C, and keep the temperature 9h carry out ageing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811480236.4A CN109371266B (en) | 2018-12-05 | 2018-12-05 | Production method of high-strength corrosion-resistant weldable Al-Mg-Si series alloy extrusion material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811480236.4A CN109371266B (en) | 2018-12-05 | 2018-12-05 | Production method of high-strength corrosion-resistant weldable Al-Mg-Si series alloy extrusion material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109371266A true CN109371266A (en) | 2019-02-22 |
| CN109371266B CN109371266B (en) | 2020-08-18 |
Family
ID=65375861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811480236.4A Active CN109371266B (en) | 2018-12-05 | 2018-12-05 | Production method of high-strength corrosion-resistant weldable Al-Mg-Si series alloy extrusion material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109371266B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301257A (en) * | 2020-09-27 | 2021-02-02 | 辽宁忠旺集团有限公司 | Production method of aluminum alloy pipe |
| CN112430766A (en) * | 2020-11-03 | 2021-03-02 | 福建祥鑫股份有限公司 | High-strength low-yield-ratio 6-series aluminum alloy and preparation method thereof |
| CN113215451A (en) * | 2021-05-13 | 2021-08-06 | 中南大学 | High-strength Al-Mg-Si-Cu aluminum alloy and preparation method thereof |
| CN113215456A (en) * | 2021-05-13 | 2021-08-06 | 中南大学 | Al-Mg-Si-Cu series alloy extrusion material and production method thereof |
| CN113444926A (en) * | 2021-06-02 | 2021-09-28 | 中国兵器科学研究院宁波分院 | High-strength corrosion-resistant 6XXX aluminum alloy section and preparation method thereof |
| CN115537612A (en) * | 2022-10-27 | 2022-12-30 | 广东中色研达新材料科技股份有限公司 | 6013 type aluminum alloy and processing technology thereof |
| CN115717206A (en) * | 2022-10-28 | 2023-02-28 | 北京科技大学 | High-strength and high-corrosion-resistance Al-Mg-Si alloy and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05331588A (en) * | 1992-06-01 | 1993-12-14 | Sky Alum Co Ltd | Aluminum alloy sheet for forming excellent in flange formability and its production |
| JP3305517B2 (en) * | 1994-11-04 | 2002-07-22 | 株式会社神戸製鋼所 | Method for producing colored aluminum alloy, aluminum alloy material, and aluminum alloy material having reddish milky white anodic oxide film |
| JP4774630B2 (en) * | 2001-05-18 | 2011-09-14 | 日産自動車株式会社 | Manufacturing method of aluminum forged parts |
| CN103140593A (en) * | 2010-09-30 | 2013-06-05 | 株式会社神户制钢所 | Cold-rolled aluminum alloy sheet for bottle can |
| CN103361519A (en) * | 2012-03-30 | 2013-10-23 | 株式会社神户制钢所 | Aluminum alloy forged material for automotive vehicles and production method for the material |
| CN107034392A (en) * | 2017-04-14 | 2017-08-11 | 山东南山铝业股份有限公司 | A kind of Al Mg Si line aluminium alloys extrudates and its production technology |
| CN108291278A (en) * | 2015-10-19 | 2018-07-17 | 特里梅特铝业欧洲股份公司 | Aluminium alloy |
-
2018
- 2018-12-05 CN CN201811480236.4A patent/CN109371266B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05331588A (en) * | 1992-06-01 | 1993-12-14 | Sky Alum Co Ltd | Aluminum alloy sheet for forming excellent in flange formability and its production |
| JP3305517B2 (en) * | 1994-11-04 | 2002-07-22 | 株式会社神戸製鋼所 | Method for producing colored aluminum alloy, aluminum alloy material, and aluminum alloy material having reddish milky white anodic oxide film |
| JP4774630B2 (en) * | 2001-05-18 | 2011-09-14 | 日産自動車株式会社 | Manufacturing method of aluminum forged parts |
| CN103140593A (en) * | 2010-09-30 | 2013-06-05 | 株式会社神户制钢所 | Cold-rolled aluminum alloy sheet for bottle can |
| CN103361519A (en) * | 2012-03-30 | 2013-10-23 | 株式会社神户制钢所 | Aluminum alloy forged material for automotive vehicles and production method for the material |
| CN108291278A (en) * | 2015-10-19 | 2018-07-17 | 特里梅特铝业欧洲股份公司 | Aluminium alloy |
| CN107034392A (en) * | 2017-04-14 | 2017-08-11 | 山东南山铝业股份有限公司 | A kind of Al Mg Si line aluminium alloys extrudates and its production technology |
Non-Patent Citations (1)
| Title |
|---|
| C.L. LIU ET AL.: "The interaction between Mn and Fe on the precipitation of Mn/Fe dispersoids in Al-Mg-Si-Mn-Fe alloys", 《SCRIPTA MATERIALIA》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301257A (en) * | 2020-09-27 | 2021-02-02 | 辽宁忠旺集团有限公司 | Production method of aluminum alloy pipe |
| CN112430766A (en) * | 2020-11-03 | 2021-03-02 | 福建祥鑫股份有限公司 | High-strength low-yield-ratio 6-series aluminum alloy and preparation method thereof |
| CN113215451A (en) * | 2021-05-13 | 2021-08-06 | 中南大学 | High-strength Al-Mg-Si-Cu aluminum alloy and preparation method thereof |
| CN113215456A (en) * | 2021-05-13 | 2021-08-06 | 中南大学 | Al-Mg-Si-Cu series alloy extrusion material and production method thereof |
| CN113215451B (en) * | 2021-05-13 | 2022-04-22 | 中南大学 | High-strength Al-Mg-Si-Cu aluminum alloy and preparation method thereof |
| CN113444926A (en) * | 2021-06-02 | 2021-09-28 | 中国兵器科学研究院宁波分院 | High-strength corrosion-resistant 6XXX aluminum alloy section and preparation method thereof |
| CN115537612A (en) * | 2022-10-27 | 2022-12-30 | 广东中色研达新材料科技股份有限公司 | 6013 type aluminum alloy and processing technology thereof |
| CN115537612B (en) * | 2022-10-27 | 2023-06-27 | 广东中色研达新材料科技股份有限公司 | 6013 type aluminum alloy and processing technology thereof |
| CN115717206A (en) * | 2022-10-28 | 2023-02-28 | 北京科技大学 | High-strength and high-corrosion-resistance Al-Mg-Si alloy and preparation method thereof |
| CN115717206B (en) * | 2022-10-28 | 2024-02-13 | 北京科技大学 | High-strength high-corrosion-resistance Al-Mg-Si alloy and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109371266B (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109371266A (en) | A kind of production method of high strength anti-corrosion weldable al-mg-Si system alloy extrusion material | |
| CN106350716B (en) | A kind of high intensity appearance member aluminum alloy materials and preparation method thereof | |
| CN108118210B (en) | Aluminum alloy and processing method of extruded section thereof | |
| CN104372210B (en) | A kind of automobile using low cost high formability aluminum alloy materials and preparation method thereof | |
| CN110423927A (en) | A kind of Ultrahigh strength aluminum lithium alloy and preparation method thereof | |
| CN106906387B (en) | It is a kind of high higher than mould aluminum alloy materials, preparation method and the component processed by the material than strong | |
| CN105714148B (en) | A kind of high-strength adonic of spinodal decomposition type | |
| CN104745902B (en) | High strength Al-Mg-Si-Cu alloy for bicycles and processing technology thereof | |
| AU2021103056A4 (en) | Aluminum alloy, and manufacturing process and use thereof | |
| CN106555086A (en) | A kind of high strength anti-corrosion Al-Zn-Mg- (Cu) line aluminium alloy bar and preparation method thereof | |
| CN109136684A (en) | A kind of T6 state aluminium alloy conduction tubing and preparation method thereof | |
| CN108994267B (en) | 6XXX series aluminum rolled plate preparation method capable of improving processing formability and aging strengthening effect | |
| CN104073686B (en) | A kind of deformation dilute copper alloy material riveted and application thereof | |
| CN105908026A (en) | 5xxx aluminum alloy board for automobile body and manufacturing method thereof | |
| CN109439979A (en) | 6063T6 improved aluminum alloy and its processing method | |
| Wang et al. | Microstructure analysis on 6061 aluminum alloy after casting and diffuses annealing process | |
| CN110423926A (en) | A kind of heat-resisting aluminium lithium alloy and preparation method thereof | |
| CN104775059B (en) | Al-Mg-Si series aluminum-alloy material with long-time natural aging stability, aluminum-alloy plate and manufacturing method thereof | |
| CN110358949A (en) | A kind of high thermal conductivity heat radiator aluminium profile and preparation method thereof, radiator | |
| CN109897995A (en) | A kind of high-strength and high-plasticity aluminum alloy plate materials and its manufacturing method | |
| CN107460380B (en) | A kind of anticorodal and preparation method thereof | |
| CN108823519A (en) | Strong height prolongs deformation aluminium lithium alloy and its heat treatment method in a kind of high Mg content | |
| CN115466888A (en) | High-strength low-quenching sensitive aluminum alloy and preparation method of aluminum alloy and aluminum alloy profile | |
| CN107151753A (en) | A kind of method that suppression A7N01 aluminum alloy surfaces coarse grain ring is produced | |
| CN110373583A (en) | A kind of quality oxide effect high strength alumin ium alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |