CN107236879A - 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 - Google Patents
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 Download PDFInfo
- Publication number
- CN107236879A CN107236879A CN201710640233.1A CN201710640233A CN107236879A CN 107236879 A CN107236879 A CN 107236879A CN 201710640233 A CN201710640233 A CN 201710640233A CN 107236879 A CN107236879 A CN 107236879A
- Authority
- CN
- China
- Prior art keywords
- aluminium alloy
- resistant
- intermediate alloys
- mass percent
- corrosion
- 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.)
- Pending
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
- 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
-
- 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
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Conductive Materials (AREA)
Abstract
The high-hardness corrosion-resistant Al Si Cu cast aluminium alloy golds of a kind of Zr, Sr combined microalloying and Mg alloyings, it is characterized in that described aluminium alloy is main by aluminium（Al）, silicon（Si）, copper（Cu）, magnesium（Mg）, zirconium（Zr）And strontium（Sr）, iron（Fe）Composition.Described preparation method includes successively：（1）850 DEG C are warming up to after pure Al and Al Si intermediate alloys are melted, Al Cu, Al Zr and Al Sr intermediate alloys is then sequentially added；（2）After after all intermediate alloys and metal molten, adjusting the temperature to 750 DEG C, pure Mg is added, degasification is refined up to without gas effusion, standing and being removed slag and ingot of casting after being incubated 5~10 min after after its fusing, adding carbon trichloride.Aluminium alloy as-cast structure of the present invention is fine and close, and room temperature non-notch impact flexibility average value is 16.35J/cm2, tensile strength is that 262.132MPa, elongation percentage are 5.645%, while uniform corrosion rate it soaks 93h in the 3.5%NaCl aqueous solution at a temperature of 37 DEG C when is 0.321081508mm/y.
Description
Technical field
The present invention relates to a kind of aluminum alloy materials, especially a kind of new high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy
The high-hardness corrosion-resistant Al-Si- of gold and preparation method thereof, specifically a kind of Zr, Sr combined microalloying and Mg alloyings
Cu systems cast aluminium alloy gold and preparation method thereof.
Background technology
Al-Si（-Cu）It is that cast aluminium alloy gold is currently to apply most cast aluminium alloy materials, this kind of alloy in the industry
Numbering have：Such as domestic YL102（AlSi12）、YL112（AlSi8.5Cu3.5）、YL113（AlSi811Cu3）, it is Japanese
ADC12（AlSi11Cu3）、ADC10（AlSi8.5Cu3.5）And the A380 in the U.S.（AlSi8.5Cu3.5）Deng these alloys tool
There are excellent casting character, higher intensity and good corrosion resistance, but its plasticity, toughness are relatively low, limit
It is applied.
It is well known that Al-Si（-Cu）It is the mechanical property and its second phase in organizing of cast aluminium alloy gold (Si is equal)
Form, size, distribution are closely related.Refinement Si phases are to reduce Si to isolate to improve Al-Si with respect to matrix Al（-Cu）System's casting
Make the effective way of aluminium alloy capability.Strontium（Sr）Element is a kind of effectively long-acting alterant in aluminium alloy, not only can be with
Effectively refinement Al-Si（-Cu）Be the Si phases in cast aluminium alloy gold, and can be effectively in refining alloy FeSiAl5Deng chemical combination
Thing phase.Zirconium（Zr）It is a kind of and the strong element of Al affinity, is added in aluminium alloy, the zirconium in alloy graining process（Zr）Element
With Al formation A13Heterogeneous Nucleation effect is played in the high-melting-point thing phase such as Zr, the follow-up solidification to alloy, not only refining alloy as cast condition
Matrix, promotes tiny equiax crystal to be formed, and improves the mobility and Elemental redistribution uniformity of liquid alloy.Therefore, Zr,
Sr combined microalloyings and Mg alloyings can greatly improve conjunction while the performances such as alloy casting character, intensity are not reduced
The plasticity and toughness of gold.
Up to the present, not yet there are a kind of Zr, Sr combined microalloying and Mg alloys with independent intellectual property right in China
The high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of change and preparation method thereof is available, and this constrains me to a certain extent
The manufacturing development of state's high performance casting alloy product.
The content of the invention
The purpose of the present invention is directed to current Al-Si（-Cu）It is cast aluminium alloy gold hardness, the problem of corrosion resistance is relatively low, hair
Bright one kind is on the basis of Al-Si-Cu systems cast aluminium alloy gold composition design, by adjusting Si, Cu constituent content, while addition is micro-
Measure zirconium（Zr）, strontium（Sr）Element and a small amount of magnesium（Mg）Element carries out composite alloying, is not reducing alloy casting character（Flowing
Property）While, Si phases and compound phase in efficient refining alloy greatly improve hardness, the corrosion resistance of alloy, obtain a kind of
Excellent casting character and the Al-Si-Cu systems cast aluminium alloy gold of high-hardness corrosion-resistant are had concurrently, while providing its preparation method.
One of technical scheme is：
The high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of a kind of Zr, Sr combined microalloying and Mg alloyings, its feature
It is：It is main by aluminium（Al）, silicon（Si）, copper（Cu）, magnesium（Mg）, zirconium（Zr）And strontium（Sr）Composition, wherein, silicon（Si）Quality
Percentage is 7.88~8.02%, copper（Cu）Mass percent be 2.04~2.08%, magnesium（Mg）Mass percent be 0.406
~0.421%, zirconium（Zr）Mass percent be 0.179~0.182%, strontium（Sr）Mass percent for 0.0066~
0.0069%, surplus is aluminium and a small amount of impurity element（Such as iron, mass percent is 0.145~0.149%）, the quality hundred of each component
It is 100% to divide than sum.
The two of technical scheme are：
A kind of preparation side of the high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Zr, Sr combined microalloying and Mg alloyings
Method, it is characterized in that its preparation process includes successively：
（1）First, 850 ± 10 DEG C are warming up to after pure Al and Al-Si intermediate alloys are melted, is then sequentially added in the middle of Al-Cu
Alloy, Al-Zr intermediate alloys, Al-Sr intermediate alloys；
（2）Secondly, after after all intermediate alloys and metal molten, adjusting the temperature to 750 ± 10 DEG C, pure Mg is added, treats that it melts
Afterwards, carbon trichloride refining degasification is added to be preheated to up to without gas effusion, standing to remove slag and pour into after 5~10 min of insulation
Cast in 300 ± 10 DEG C of metal die ingot, that is, the high rigidity for obtaining a kind of Zr, Sr combined microalloying and Mg alloyings is resistance to
Corrode Al-Si-Cu systems cast aluminium alloy gold.
The quality hundred that Si mass percent is Cu in 10.21%, Al-Cu intermediate alloys in described Al-Si intermediate alloys
It is 4.11% to divide the mass percent that ratio is Zr in 50.12%, Al-Zr intermediate alloys, Sr quality hundred in Al-Sr intermediate alloys
Divide than being 9.89%.
Beneficial effects of the present invention：
（1）It is 16.35J/cm2 present invention obtains a kind of room temperature non-notch impact flexibility average value（By GB/T 229-2007
Metal material Charpy pendulum impact test method）；Tensile strength is that 262.132 MPa, elongation percentage are 5.645 %；Hardness is
93.65 HV, electrical conductivity are 36.9528%；Homogeneous corrosion when soaking 93 h at a temperature of 37 DEG C in the 3.5% NaCl aqueous solution
Speed（By GB 1024-88 Uniform Corrosion Method of Laboratory Immersion Test methods）It is hard for 0.321081508 mm/y height
Spend corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold.
（2）The present invention is contained on the basis of Al-Si-Cu systems cast aluminium alloy gold composition design by adjusting Si, Cu element
Amount, while adding trace zirconium（Zr）, strontium（Sr）Element and a small amount of magnesium（Mg）Element carries out composite alloying, is not reducing alloy casting
While making the densification of performance guarantee alloy structure, Si phases and the compound phase in alloy are efficiently refined, alloy greatly improved
Hardness, corrosion resistance, such as high-hardness corrosion-resistant Al-Si-Cu of Zr, Sr combined microalloying of the present invention and Mg alloyings casts
Aluminium alloy（By taking embodiment one as an example）, its hardness is than without Zr, Sr combined microalloying and the Al-Si-Cu of Mg alloyings castings
Aluminium alloy（By taking comparative example one as an example）Hardness improve 24.74 %, average homogeneous corrosion rate improves 8.23%.
（3）Si phase sizes are in 1~2 μm of level in Al-Si-Cu systems of the present invention cast aluminium alloy gold, and shape is in granular form or stub
Shape, and draw ratio is less than or equal to 2.
（4）The high rigidity corrosion resistant of the typical ductile rupture of dimple feature is all presented present invention obtains impact and stretching fracture
Lose Al-Si-Cu systems cast aluminium alloy gold.
（5）The invention discloses a kind of composition of high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold and preparation method,
The external technology blockage to high performance casting aluminium alloy is broken to a certain extent, Chinese large-sized complex thin-wall high rigidity can be met
The manufacture demand of corrosion-resisting aluminum casting alloy product.
（6）The present invention obtains preferable preparation method by substantial amounts of experiment, is added in order especially by using
The method of each intermediate alloy and simple metal controls each component content, can be readily derived by the technique of the present invention satisfactory
Aluminum alloy materials.
Brief description of the drawings
Fig. 1 is Zr, Sr combined microalloying of the embodiment of the present invention one and the high-hardness corrosion-resistant Al-Si- of Mg alloyings
The metallographic structure optical microscope photograph of Cu systems cast aluminium alloy gold.
Fig. 2 is Zr, Sr combined microalloying of the embodiment of the present invention one and the high-hardness corrosion-resistant Al-Si- of Mg alloyings
The metallographic structure electron scanning micrograph of Cu systems cast aluminium alloy gold.
Fig. 3 is Zr, Sr combined microalloying of the embodiment of the present invention one and the high-hardness corrosion-resistant Al-Si- of Mg alloyings
The impact toughness sample Fracture scan electron micrograph of Cu systems cast aluminium alloy gold.
Fig. 4 is Zr, Sr combined microalloying of the embodiment of the present invention one and the high-hardness corrosion-resistant Al-Si- of Mg alloyings
The tensile sample Fracture scan electron micrograph of Cu systems cast aluminium alloy gold.
Fig. 5 is Zr, Sr combined microalloying of the embodiment of the present invention one and the high-hardness corrosion-resistant Al-Si- of Mg alloyings
The corrosion sample metallographic surface Scanning Electron microphotograph of Cu systems cast aluminium alloy gold.
Fig. 6 is the gold of the Al-Si-Cu systems cast aluminium alloy gold without Zr, Sr combined microalloying of comparative example one of the present invention
Phase constitution optical microscope photograph.
Fig. 7 is the metallographic group of the Al-Si-Cu systems cast aluminium alloy gold without Zr, Sr combined microalloying of this comparative example one
Knit electron scanning micrograph.
Fig. 8 is the casting of the Al-Si-Cu systems without Zr, Sr combined microalloying and Mg alloyings of comparative example one of the present invention
The impact toughness sample Fracture scan electron micrograph of aluminium alloy.
Fig. 9 is the casting of the Al-Si-Cu systems without Zr, Sr combined microalloying and Mg alloyings of comparative example one of the present invention
The tensile sample Fracture scan electron micrograph of aluminium alloy.
Figure 10 is the casting of the Al-Si-Cu systems without Zr, Sr combined microalloying and Mg alloyings of comparative example one of the present invention
The corrosion sample metallographic surface Scanning Electron microphotograph of aluminium alloy.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment one.
As shown in Fig. 1,2,3,4,5.
A kind of high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Zr, Sr combined microalloying and Mg alloyings, its
Preparation method：
First by the pure Al of A00 grades（99.79%Al, 0.14%Fe, 0.04%Si）With Al-Si (89.62 %Al, 10.21%Si,
0.17% Fe, all components of the invention are represented using mass percent, those skilled in the art can by conventional algorithm by its
Weight or quality are converted into, similarly hereinafter, it is impurity that all components, which is added the part less than 100%) it is warming up to after intermediate alloy fusing
850 ± 10 DEG C, then sequentially add Al-Cu (49.62%Al, 50.12%Cu, 0.15%Fe, 0.11%Si) intermediate alloy, Al-
Zr (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si) intermediate alloy, Al-Sr (89.86%Al, 9.89%Sr,
0.15%Fe, 0.10%Si) intermediate alloy；After after all intermediate alloys and metal molten, adjusting the temperature to 750 ± 10 DEG C, plus
Enter pure Mg, after after its fusing, adding carbon trichloride refining degasification up to no gas effusion, gone after standing 5~10 min of insulation
Slag simultaneously pours into and is preheated in 300 ± 10 DEG C of metal die ingot of casting；Obtain a kind of Zr, Sr combined microalloying and Mg is closed
The high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of aurification.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
It is golden to be through the actual measurement composition of spectrum：7.95%Si, 2.06 %Cu, 0. 415%Mg, 0.181 %Zr, 0.0067 %Sr,
0.147 %Fe, surplus is aluminium and impurity member, and Fe therein is formed by the trace element in fine aluminium and intermediate alloy.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
Payment organization is fine and close（Fig. 1）, Si phases are tiny, and size is in granular form or corynebacterium in 1~2 μm of level, shape, and draw ratio is less than etc.
In 2（Fig. 1, Fig. 2）；Room temperature non-notch impact flexibility average value is 16.35 J/cm2（By the GB/T 229-2007 metal material summers
Than pendulum impact test method）, impact toughness sample fracture is in the typical ductile rupture of dimple feature（Fig. 3）；Tensile strength is
262.132 MPa, elongation percentage are 5.645 %, and tensile sample fracture is in the typical ductile rupture of dimple feature（Fig. 4）；Hardness is
93.65 HV, electrical conductivity are 36.9528%；Homogeneous corrosion when soaking 93 h at a temperature of 37 DEG C in the 3.5% NaCl aqueous solution
Speed（By GB 1024-88 Uniform Corrosion Method of Laboratory Immersion Test methods）For 0.321081508mm/y, corrode table
Face Si phase sizes are tiny（Fig. 5）.
Embodiment two.
A kind of high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Zr, Sr combined microalloying and Mg alloyings, its
Preparation method：
First by the pure Al of A00 grades（99.79%Al, 0.14%Fe, 0.04%Si）With Al-Si (89.62 %Al, 10.21%Si,
0.17% Fe, all components of the invention represent that similarly hereinafter, the part that all components are added less than 100% is using mass percent
Impurity) intermediate alloy fusing after be warming up to 850 ± 10 DEG C, then sequentially add Al-Cu (49.62%Al, 50.12%Cu, 0.15%
Fe, 0.11%Si) intermediate alloy, Al-Zr (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si) intermediate alloy, Al-
Sr (89.86%Al, 9.89%Sr, 0.15%Fe, 0.10%Si) intermediate alloy；After after all intermediate alloys and metal molten, adjust
Temperature is saved to 750 ± 10 DEG C, pure Mg is added, after it melts, carbon trichloride refining degasification is added until being escaped without gas, it is quiet
Put to remove slag and pour into after the min of insulation 5~10 and be preheated in 300 ± 10 DEG C of metal die ingot of casting；Obtain a kind of Zr,
The high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Sr combined microalloyings and Mg alloyings.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
It is golden to be through the actual measurement composition of spectrum：8.02%Si, 2.04 %Cu, 0. 421%Mg, 0.18%Zr, 0.0066%Sr,
0.145%Fe, surplus is aluminium and impurity element, and Fe therein is formed by the trace element in fine aluminium and intermediate alloy.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
Payment organization is fine and close, and Si phases are tiny, and size is in granular form or corynebacterium in 1~2 μm of level, shape, and draw ratio is less than or equal to 2；
Room temperature non-notch impact flexibility average value is 15.2J/cm2（By GB/T 229-2007 metal material Charpy pendulum impact tests
Method）, impact toughness sample fracture is in the typical ductile rupture of dimple feature；Tensile strength is that 257.215MPa, elongation percentage are
5.35%, tensile sample fracture is in the typical ductile rupture of dimple feature；Hardness is that 91.6 HV, electrical conductivity are 37.022%；
Uniform corrosion rate when soaking 93 h at a temperature of 37 DEG C in the 3.5% NaCl aqueous solution（It is real by GB 1024-88 metal materials
Test room homogeneous corrosion total immersion test method）0.310289328 is mm/y, and corrosion surface Si phase sizes are tiny.
Embodiment three.
A kind of high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Zr, Sr combined microalloying and Mg alloyings, its
Preparation method：
First by the pure Al of A00 grades（99.79%Al, 0.14%Fe, 0.04%Si）With Al-Si (89.62 %Al, 10.21%Si,
0.17% Fe, all components of the invention represent that similarly hereinafter, the part that all components are added less than 100% is using mass percent
Impurity) intermediate alloy fusing after be warming up to 850 ± 10 DEG C, then sequentially add Al-Cu (49.62%Al, 50.12%Cu, 0.15%
Fe, 0.11%Si) intermediate alloy, Al-Zr (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si) intermediate alloy, Al-
Sr (89.86%Al, 9.89%Sr, 0.15%Fe, 0.10%Si) intermediate alloy；After after all intermediate alloys and metal molten, adjust
Temperature is saved to 750 ± 10 DEG C, pure Mg is added, after it melts, carbon trichloride refining degasification is added until being escaped without gas, it is quiet
Put to remove slag and pour into after the min of insulation 5~10 and be preheated in 300 ± 10 DEG C of metal die ingot of casting；Obtain a kind of Zr,
The high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Sr combined microalloyings and Mg alloyings.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
It is golden to be through the actual measurement composition of spectrum：7.94%Si, 2.08 %Cu, 0. 414%Mg, 0.179%Zr, 0.0066Sr,
0.148%Fe, surplus is aluminium and impurity element, and Fe therein is formed by the trace element in fine aluminium and intermediate alloy.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
Payment organization is fine and close, and Si phases are tiny, and size is in granular form or corynebacterium in 1~2 μm of level, shape, and draw ratio is less than or equal to 2；
Room temperature non-notch impact flexibility average value is 17.5J/cm2（By GB/T 229-2007 metal material Charpy pendulum impact tests
Method）, impact toughness sample fracture is in the typical ductile rupture of dimple feature；Tensile strength is that 267.049MPa, elongation percentage are
5.94%, tensile sample fracture is in the typical ductile rupture of dimple feature；Hardness is that 94.5HV, electrical conductivity are 36.676%；
Uniform corrosion rate during 93 h is soaked in the 3.5% NaCl aqueous solution at a temperature of 37 DEG C（Tested by GB 1024-88 metal materials
Room homogeneous corrosion total immersion test method）0.331873688 is mm/y, and corrosion surface Si phase sizes are tiny.
Example IV（In mass）.
A kind of high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Zr, Sr combined microalloying and Mg alloyings, its
Preparation method：
First 850 ± 10 DEG C will be warming up to after the pure Al and 77.179 gram of Al-Si intermediate alloy fusing of 13.812 grams of A00 grades, then
Sequentially add 4.110 grams of Al-Cu intermediate alloys, 4.428 grams of Al-Zr intermediate alloys, 0.0698 gram of Al-Sr intermediate alloy；Treat institute
Have after intermediate alloy and metal molten, adjust the temperature to 750 ± 10 DEG C, add 0.406 gram of pure Mg, after after its fusing, add six
Chloroethanes refining degasification without gas until escape, and removing slag and pour into after 5~10 min of standing insulation is preheated to 300 ± 10 DEG C
Cast in metal die ingot；Obtain a kind of Zr, Sr combined microalloying and the high-hardness corrosion-resistant Al-Si- of Mg alloyings
Cu systems cast aluminium alloy gold.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
It is golden to be through the actual measurement composition of spectrum：7.88%Si, 2.06 %Cu, 0.406%Mg, 0.182 %Zr, 0.0069 %Sr,
0.149 %Fe, surplus is aluminium and impurity member.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
Payment organization is fine and close, and Si phases are tiny, and size is in granular form or corynebacterium in 1~2 μm of level, shape, and draw ratio is less than or equal to 2；
Room temperature non-notch impact flexibility average value is 17.1J/cm2（By GB/T 229-2007 metal material Charpy pendulum impact tests
Method）, impact toughness sample fracture is in the typical ductile rupture of dimple feature；Tensile strength is that 264.126MPa, elongation percentage are
5.82%, tensile sample fracture is in the typical ductile rupture of dimple feature；Hardness is that 93.6HV, electrical conductivity are 37.863%；
Uniform corrosion rate during 93 h is soaked in the 3.5% NaCl aqueous solution at a temperature of 37 DEG C（Tested by GB 1024-88 metal materials
Room homogeneous corrosion total immersion test method）0.328675385 is mm/y, and corrosion surface Si phase sizes are tiny.
Embodiment five（In mass）.
A kind of high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Zr, Sr combined microalloying and Mg alloyings, its
Preparation method：
First 850 ± 10 DEG C will be warming up to after the pure Al and 78.355 gram of Al-Si intermediate alloy fusing of 12.657 grams of A00 grades, then
Sequentially add 4.150 grams of Al-Cu intermediate alloys, 4.355 grams of Al-Zr intermediate alloys, 0.0667 gram of Al-Sr intermediate alloy；Treat institute
Have after intermediate alloy and metal molten, adjust the temperature to 750 ± 10 DEG C, add 0.416 gram of pure Mg, after after its fusing, add six
Chloroethanes refining degasification without gas until escape, and removing slag and pour into after 5~10 min of standing insulation is preheated to 300 ± 10 DEG C
Cast in metal die ingot；Obtain a kind of Zr, Sr combined microalloying and the high-hardness corrosion-resistant Al-Si- of Mg alloyings
Cu systems cast aluminium alloy gold.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
It is golden to be through the actual measurement composition of spectrum：8.00%Si, 2.08 %Cu, 0.416%Mg, 0.179 %Zr, 0.0066 %Sr,
0.147 %Fe, surplus is aluminium and impurity member.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
Payment organization is fine and close, and Si phases are tiny, and size is in granular form or corynebacterium in 1~2 μm of level, shape, and draw ratio is less than or equal to 2；
Room temperature non-notch impact flexibility average value is 16.8J/cm2（By GB/T 229-2007 metal material Charpy pendulum impact tests
Method）, impact toughness sample fracture is in the typical ductile rupture of dimple feature；Tensile strength is that 260.869MPa, elongation percentage are
5.75%, tensile sample fracture is in the typical ductile rupture of dimple feature；Hardness is that 93.8HV, electrical conductivity are 38.742%；
Uniform corrosion rate during 93 h is soaked in the 3.5% NaCl aqueous solution at a temperature of 37 DEG C（Tested by GB 1024-88 metal materials
Room homogeneous corrosion total immersion test method）0.330985142 is mm/y, and corrosion surface Si phase sizes are tiny.
Embodiment six（In mass）.
A kind of high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of Zr, Sr combined microalloying and Mg alloyings, its
Preparation method：
First 850 ± 10 DEG C will be warming up to after the pure Al and 78.550 gram of Al-Si intermediate alloy fusing of 12.251 grams of A00 grades, then
Sequentially add 4.070 grams of Al-Cu intermediate alloys, 4.380 grams of Al-Zr intermediate alloys, 0.0688 gram of Al-Sr intermediate alloy；Treat institute
Have after intermediate alloy and metal molten, adjust the temperature to 750 ± 10 DEG C, add 0.421 gram of pure Mg, after after its fusing, add six
Chloroethanes refining degasification without gas until escape, and removing slag and pour into after 5~10 min of standing insulation is preheated to 300 ± 10 DEG C
Cast in metal die ingot；Obtain a kind of Zr, Sr combined microalloying and the high-hardness corrosion-resistant Al-Si- of Mg alloyings
Cu systems cast aluminium alloy gold.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
It is golden to be through the actual measurement composition of spectrum：8.02%Si, 2.04 %Cu, 0.421%Mg, 0.180 %Zr, 0.0068 %Sr,
0.149 %Fe, surplus is aluminium and impurity member.
Zr, Sr combined microalloying of the present embodiment and the high-hardness corrosion-resistant Al-Si-Cu systems Cast aluminium alloy of Mg alloyings
Payment organization is fine and close, and Si phases are tiny, and size is in granular form or corynebacterium in 1~2 μm of level, shape, and draw ratio is less than or equal to 2；
Room temperature non-notch impact flexibility average value is 16.5J/cm2（By GB/T 229-2007 metal material Charpy pendulum impact tests
Method）, impact toughness sample fracture is in the typical ductile rupture of dimple feature；Tensile strength is that 266.258MPa, elongation percentage are
5.84%, tensile sample fracture is in the typical ductile rupture of dimple feature；Hardness is that 93.2HV, electrical conductivity are 36.982%；
Uniform corrosion rate during 93 h is soaked in the 3.5% NaCl aqueous solution at a temperature of 37 DEG C（Tested by GB 1024-88 metal materials
Room homogeneous corrosion total immersion test method）0.326856854 is mm/y, and corrosion surface Si phase sizes are tiny.
Comparative example one.
As shown in Fig. 6,7,8,9,10.
A kind of Al-Si-Cu systems cast aluminium alloy gold without Zr and Sr combined microalloyings and Mg alloyings, its preparation side
Method：
First by the pure Al of A00 grades（99.79%Al, 0.14%Fe, 0.04%Si）With Al-Si (89.62 %Al, 10.21%Si,
0.17% Fe, all components of the invention represent that similarly hereinafter, the part that all components are added less than 100% is using mass percent
Impurity) intermediate alloy fusing after be warming up to 850 ± 10 DEG C, then sequentially add Al-Cu (49.62%Al, 50.12%Cu, 0.15%
Fe, 0.11%Si) intermediate alloy；After after all intermediate alloys and metal molten, adjusting the temperature to 750 ± 10 DEG C, chlordene is added
Ethane refining degasification is preheated to 300 ± 10 DEG C of gold up to removing slag and pouring into after no gas effusion, 5~10 min of standing insulation
Belong to ingot of being cast in mould；Obtain a kind of Al-Si-Cu systems cast aluminium alloy gold without Zr and Sr combined microalloyings.
The Al-Si-Cu systems cast aluminium alloy gold without Zr and Sr combined microalloyings of this comparative example is through the actual measurement of spectrum
Composition is：8.5 %Si, 2.14 %Cu, 0.136 %Fe, surplus are aluminium and impurity element.
High-hardness corrosion-resistant Al-Si-Cu systems without Zr, Sr combined microalloying and Mg alloyings casting of this comparative example
Aluminium alloy and preparation method thereof dense structure（Fig. 6）, Si phases are larger, and size is in micron order, and shape is in strip, and draw ratio
More than 2（Fig. 6, Fig. 7）；Room temperature non-notch impact flexibility average value is 9.93J/cm2（By the GB/T 229-2007 metal material summers
Than pendulum impact test method）, impact toughness sample fracture is in the typical brittle fracture of Quasi cleavage feature（Fig. 8）；Tensile strength
It is 5.825% for 202.68 MPa, elongation percentage, tensile sample fracture is in the typical brittle fracture of Quasi cleavage feature（Fig. 9）；Hardness
For 75.075HV, electrical conductivity is 33.9224166609%；When soaking 93 h at a temperature of 37 DEG C in the 3.5% NaCl aqueous solution
Uniform corrosion rate（By GB 1024-88 Uniform Corrosion Method of Laboratory Immersion Test methods）For 0.296661583 mm/
Y, corrosion surface Si phase sizes are thick（Figure 10）.
Only list above several common proportionings aluminium alloy with when manufacture method, those skilled in the art can be with
The proportioning of each component is suitably adjusted according to examples detailed above and strictly manufacture is carried out by above-mentioned steps can obtain preferable Zr, Sr
The high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of combined microalloying and Mg alloyings.
Part that the present invention does not relate to is same as the prior art or can be realized using prior art.
Claims (3)
1. the high-hardness corrosion-resistant Al-Si-Cu systems cast aluminium alloy gold of a kind of Zr, Sr combined microalloying and Mg alloyings, it is special
Levy and be：It is main by aluminium（Al）, silicon（Si）, copper（Cu）, magnesium（Mg）, zirconium（Zr）And strontium（Sr）Composition, wherein, silicon（Si）Matter
It is 7.88~8.02%, copper to measure percentage（Cu）Mass percent be 2.04~2.08%, magnesium（Mg）Mass percent be
0.406~0.421%, zirconium（Zr）Mass percent be 0.179~0.182%, strontium（Sr）Mass percent for 0.0066~
0.0069%, surplus is aluminium and a small amount of impurity element, and the mass percent sum of each component is 100%.
2. the high-hardness corrosion-resistant Al-Si-Cu systems of Zr, Sr combined microalloying and Mg alloyings described in a kind of claim 1
The preparation method of cast aluminium alloy gold, it is characterized in that its preparation process includes successively：
（1）First, 850 ± 10 DEG C are warming up to after pure Al and Al-Si intermediate alloys are melted, is then sequentially added in the middle of Al-Cu
Alloy, Al-Zr intermediate alloys, Al-Sr intermediate alloys；
（2）Secondly, after after all intermediate alloys and metal molten, adjusting the temperature to 750 ± 10 DEG C, pure Mg is added, treats that it melts
Afterwards, carbon trichloride refining degasification is added to be preheated to up to without gas effusion, standing to remove slag and pour into after 5~10 min of insulation
Cast in 300 ± 10 DEG C of metal die ingot, that is, the high rigidity for obtaining a kind of Zr, Sr combined microalloying and Mg alloyings is resistance to
Corrode Al-Si-Cu systems cast aluminium alloy gold.
3. preparation method according to claim 2, it is characterized in that in described Al-Si intermediate alloys Si mass percent
The mass percent for being Zr in 50.12%, Al-Zr intermediate alloys for the mass percent of Cu in 10.21%, Al-Cu intermediate alloys
It is 9.89% for the mass percent of Sr in 4.11%, Al-Sr intermediate alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640233.1A CN107236879A (en) | 2017-07-31 | 2017-07-31 | 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640233.1A CN107236879A (en) | 2017-07-31 | 2017-07-31 | 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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107236879A true CN107236879A (en) | 2017-10-10 |
Family
ID=59989509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710640233.1A Pending CN107236879A (en) | 2017-07-31 | 2017-07-31 | 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107236879A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110629078A (en) * | 2019-08-27 | 2019-12-31 | 江苏大学 | Novel high-strength high-plasticity cast-forged composite aluminum alloy and member preparation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555423A (en) * | 2001-07-25 | 2004-12-15 | �Ѻ͵繤��ʽ���� | Aluminum alloy excellent in machinability, and aluminum alloy material and method for production thereof |
| CN101838762A (en) * | 2010-03-15 | 2010-09-22 | 江苏大学 | High-hardness corrosion resistant 7000 series aluminum alloy and production method thereof |
| CN101838760A (en) * | 2010-03-29 | 2010-09-22 | 江苏大学 | Scandium, zirconium and strontium compound microalloyed 6013 type aluminium alloy and preparation method thereof |
| CN105463269A (en) * | 2015-12-01 | 2016-04-06 | 上海交通大学 | High-strength and high-corrosion-resistance cast aluminum alloy and pressure casting preparation method thereof |
| CN106947892A (en) * | 2017-05-12 | 2017-07-14 | 南通江中光电有限公司 | A kind of high tough anticorrosion aluminium material and preparation method thereof |
-
2017
- 2017-07-31 CN CN201710640233.1A patent/CN107236879A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555423A (en) * | 2001-07-25 | 2004-12-15 | �Ѻ͵繤��ʽ���� | Aluminum alloy excellent in machinability, and aluminum alloy material and method for production thereof |
| CN101838762A (en) * | 2010-03-15 | 2010-09-22 | 江苏大学 | High-hardness corrosion resistant 7000 series aluminum alloy and production method thereof |
| CN101838760A (en) * | 2010-03-29 | 2010-09-22 | 江苏大学 | Scandium, zirconium and strontium compound microalloyed 6013 type aluminium alloy and preparation method thereof |
| CN105463269A (en) * | 2015-12-01 | 2016-04-06 | 上海交通大学 | High-strength and high-corrosion-resistance cast aluminum alloy and pressure casting preparation method thereof |
| CN106947892A (en) * | 2017-05-12 | 2017-07-14 | 南通江中光电有限公司 | A kind of high tough anticorrosion aluminium material and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110629078A (en) * | 2019-08-27 | 2019-12-31 | 江苏大学 | Novel high-strength high-plasticity cast-forged composite aluminum alloy and member preparation method |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Basavakumar et al. | Influence of grain refinement and modification on microstructure and mechanical properties of Al–7Si and Al–7Si–2.5 Cu cast alloys | |
| Birol | Impact of grain size on mechanical properties of AlSi7Mg0. 3 alloy | |
| WO2021098044A1 (en) | High-performance aluminum alloy for semi-solid die casting, and preparation method thereof | |
| CN104073699A (en) | Al-Si-Cu-Mg cast aluminum alloy and preparation method thereof | |
| WO2018205287A1 (en) | High-strength and -toughness corrosion-resistant aluminum alloy material and method for fabricating same | |
| CN107475586B (en) | A kind of polynary made of Al-Cu alloy of high-strength and high ductility and its preparation method and application | |
| CN108103363A (en) | It is a kind of for refinement-alterant of hypoeutectic silumin alloy and its preparation method and application | |
| CN110592445B (en) | 720-doped 740MPa cold extrusion Al-Zn-Mg-Cu-Ti aluminum alloy and preparation method thereof | |
| CN105568083B (en) | It is a kind of suitable for high tough aluminum alloy materials of semi-solid rheological die casting and preparation method thereof | |
| CN108193096A (en) | A kind of hypoeutectic silumin alloy of high-strength and high ductility and preparation method thereof | |
| CN108342613A (en) | A kind of Environment-friendlycorrosion-resistant corrosion-resistant copper alloy and preparation method thereof | |
| CN107354349A (en) | A kind of tank body material is with high-performance containing nearly cocrystallized Al-Si alloys of Zn and preparation method thereof | |
| CN108048710A (en) | A kind of high tough aluminium alloy of extrusion casint and its extrusion casting method | |
| Wang et al. | High damping capacity of Al-40Zn alloys with fine grain and eutectoid structures via Yb alloying | |
| CN107400809A (en) | The zirconium strontium compound microalloyed Al-Si-Cu-based cast aluminium alloy gold of high tough corrosion-resistant low silicon content and preparation method | |
| CN107338374A (en) | The high tough Al Si Cu system's cast aluminium alloy golds and preparation method of Zr, Sr combined microalloying and Mn alloyings | |
| CN108300894A (en) | A kind of anticorrosive wear-resistant copper alloy and preparation method thereof | |
| CN107447137A (en) | The high tough corrosion-resistant Al Si Cu cast aluminium alloy golds and preparation method of a kind of Zr and Sr combined microalloyings | |
| CN107236879A (en) | 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 | |
| CN109182804A (en) | A kind of high intensity aluminum bronze line aluminium alloy preparation method | |
| CN107937768A (en) | A kind of extrusion casint aluminum alloy materials and preparation method thereof | |
| CN107385289A (en) | 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 | |
| CN102418009B (en) | Aluminum alloy capable of digesting high-hardness compounds and smelting method of aluminum alloy | |
| CN109457153A (en) | A kind of high Zn pack alloy and preparation method thereof | |
| CN107385288A (en) | A kind of zirconium is strontium compound microalloyed and the high tough aluminium copper silicon cast aluminium alloy gold and preparation method of kirsite |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171010 |