CN107365928A - A kind of magnalium kirsite and preparation method - Google Patents
A kind of magnalium kirsite and preparation method Download PDFInfo
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- CN107365928A CN107365928A CN201710797518.6A CN201710797518A CN107365928A CN 107365928 A CN107365928 A CN 107365928A CN 201710797518 A CN201710797518 A CN 201710797518A CN 107365928 A CN107365928 A CN 107365928A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- 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
- C22F1/053—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 zinc as the next major constituent
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Abstract
The invention provides a kind of magnalium kirsite, belongs to aluminium alloy preparation field, includes the component of following weight percentage：83~84% Al, 10~11% Zn, 2~3% Mg, 0.2~0.3% Si, 0.5% Fe, 0.2% Mn, 1.2~1.5% Cu, 0.1~0.2%Ti, 0.5~1% group of the lanthanides mischmetal, the group of the lanthanides mixed rare-earth elements include 0.3% La, 0.1% Nd and the Ce of surplus, and preparation method includes the aluminium sheet the pre-heat treatment after fusing, electromagnetic agitation carried out to the useless cathode aluminum plate after fusing and ingot casting is heat-treated.The as shown by data of embodiment, the hardness of magnalium kirsite provided by the invention are up to 133BHN, tensile strength 403MPa, elongation 0.90%, and salt spray resistance processing shows corrosion resistance and wearability all more than 100 hours.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, more particularly to a kind of magnalium kirsite and preparation method.
Background technology
It is increasingly severe with earth environment, to save the energy, extend the service life of material, building, automobile, high ferro,
The industry users such as Aero-Space propose higher requirement to the corrosion resistance of material and weatherability etc..
Magnalium kirsite is due to excellent mechanical property and casting character and cheap (only the 1/2 of copper alloy
~1/3), bronze is gradually substituted for wear parts such as the turbine of manufacture, bearing shell, sliding block, thread bush in many fields.But
Ripe magnalium kirsite is only used for the part of low-speed heave-load work at present, for being worked under high speed motion, hot environment
Magnalium kirsite part there is the problem of poor dimensional stability, seriously limit the application of magnalium kirsite.
The content of the invention
In view of this, have it is an object of the invention to provide a kind of Mg-Al-Zn Alloy, under high-temperature work environment higher
Dimensional stability.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
The invention provides a kind of magnalium kirsite, formed according to element, include the component of following weight percentage：83
~84% Al, 10~11% Zn, 2~3% Mg, 0.2~0.3% Si, 0.5% Fe, 0.2% Mn, 1.2~
1.5% Cu, 0.1~0.2%Ti, 0.5~1% group of the lanthanides mischmetal, the group of the lanthanides mixed rare-earth elements include 0.3%
La, 0.1% Nd and the Ce of surplus；
The preparation method of the magnalium kirsite, comprises the following steps：
(1) by aluminium sheet successively preheated, fusing and electromagnetic agitation, aluminum melt is obtained；
(2) aluminum melt for obtaining the step (1) and zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and
Group of the lanthanides mischmetal and deslagging agent mixing carry out melting, obtain mixed molten liquid；
(3) mixed molten liquid for obtaining the step (2) carries out quenched and filtering successively, obtains refining liquation；
(4) the refining liquation casting for obtaining the step (3), obtains ingot casting；
(5) ingot casting that the step (4) obtains is heat-treated, obtains magnalium kirsite.
Preferably, described magnalium kirsite includes the component of following weight percentage：
84% Al, 11% Zn, 2% Mg, 0.3% Si, 0.5% Fe, 1.3% Cu, 0.2%Ti, 0.2%
Mn, 0.5% group of the lanthanides mischmetal.
Preferably, also include before the aluminium sheet preheating：The aluminium sheet is deacidified successively and processing of drying in the shade.
Preferably, the temperature of preheating is 620~650 DEG C in the step (1), and the time of the preheating is 1~1.5h.
Preferably, the temperature of fusing is 680~700 DEG C in the step (1).
Preferably, the temperature of melting is 660~680 DEG C in the step (2).
Preferably, heat treatment includes solution treatment and Ageing Treatment successively in the step (5).
Preferably, the temperature of the solution treatment is 250~360 DEG C, and the time of the solution treatment is 2~8h.
Preferably, the temperature of the Ageing Treatment is 50~150 DEG C, and the time of the Ageing Treatment is 10~30min.
Present invention also offers the preparation method of magnalium kirsite described in above-mentioned technical proposal, comprise the following steps：
(1) by useless cathode aluminum plate successively preheated, fusing and electromagnetic agitation, aluminum melt is obtained；
(2) aluminum melt for obtaining the step (1) and zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and
Group of the lanthanides mischmetal and deslagging agent mixing carry out melting, obtain mixed molten liquid；
(3) mixed molten liquid for obtaining the step (2) carries out quenched and filtering successively, obtains refining liquation；
(4) the refining liquation casting for obtaining the step (3), obtains ingot casting；
(5) ingot casting that the step (4) obtains is heat-treated, obtains magnalium kirsite.
The invention provides a kind of magnalium kirsite, formed according to element, include the component of following weight percentage：83
~84% Al, 10~11% Zn, 2~3% Mg, 0.2~0.3% Si, 0.5% Fe, 0.2% Mn, 1.2~
1.5% Cu, 0.1~0.2%Ti, 0.5~1% group of the lanthanides mischmetal, the group of the lanthanides mixed rare-earth elements include 0.3%
La, 0.1% Nd and the Ce of surplus, preparation method comprise the following steps：By useless cathode aluminum plate successively preheated, fusing and electricity
Magnetic stirs, and obtains aluminum melt, aluminum melt is mixed with zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and group of the lanthanides dilute
Soil and deslagging agent mixing carry out melting, obtain mixed molten liquid, and mixed molten liquid carries out quenched and filtering, it is molten to obtain refining successively
Liquid, liquation casting is refined, ingot casting is obtained, ingot casting is heat-treated, obtain magnalium kirsite.
In the present invention, the dimensional stability of magnalium kirsite can be increased by improving the content of aluminium element；Element silicon adds
Enter to improve the mobile performance of magnalium kirsite, the effect dissociated cracking and isolate matrix of silicon phase can also improve magnalium zinc
The wearability of alloy；Copper, magnesium elements can mutually improve the mechanical property of magnalium kirsite as enhancing, such as hardness, tensile property,
Also the wearability of alloy can be increased；Zn-ef ficiency can play supplement invigoration effect, and can improve the plasticity of alloy；Group of the lanthanides mixes
The addition of rare earth has metamorphism, Microalloying Effect, catharsis to magnalium kirsite, can refine magnalium kirsite crystalline substance
Grain, Wear Resistance is improved, improve magnalium kirsite high-temperature behavior and hot tearing performance；Ferro element can prevent alloy crack
Produce；Manganese element and titanium elements can improve the intensity and plasticity of alloy, while copper and manganese element can be with aluminium element shapes
Into the intensity and plasticity of tiny particle, further raising alloy.The preparation method of magnalium kirsite provided by the invention includes will
Aluminium sheet the pre-heat treatment after fusing, can refine that rich aluminium Dendritic TiC is thin, reduces the gap of intergranular；To the useless cathode aluminum plate after fusing
The release that electromagnetic agitation can speed up heat is carried out, changes the type of flow of melt, can effectively suppress column crystals growth, make crystalline substance
Grain isometry, may also speed up diffusion, dissolve, the course of reaction such as deoxidation, shorten smelting cycle, and the same of phase morphology is separated out changing
When reduce gross segregation and microscopic segregation；Ingot casting is carried out (n+ ε) that heat treatment is completely eliminated in magnalium kirsite in ingot casting
Desmachyme, the dendritic segregation degree of β phases mitigate significantly, further avoid the unstable phenomenon of magnalium kirsite size.Implement
The as shown by data of example, the hardness of magnalium kirsite provided by the invention are up to 133BHN, tensile strength 403MPa, and elongation is
0.90%, salt spray resistance processing shows corrosion resistance and wearability all more than 100 hours.
Embodiment
The invention provides a kind of magnalium kirsite, formed according to element, include the component of following weight percentage：
83~84% Al, 10~11% Zn, 2~3% Mg, 0.2~0.3% Si, 0.5% Fe, 0.2%
Mn, 1.2~1.5% Cu, 0.1~0.2%Ti, 0.5~1% group of the lanthanides mischmetal, the group of the lanthanides mixed rare-earth elements
Including 0.3% La, 0.1% Nd and the Ce of surplus；
The preparation method of the magnalium kirsite, comprises the following steps：
(1) by aluminium sheet successively preheated, fusing and electromagnetic agitation, aluminum melt is obtained；
(2) aluminum melt for obtaining the step (1) and zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and
Group of the lanthanides mischmetal and deslagging agent mixing carry out melting, obtain mixed molten liquid；
(3) mixed molten liquid for obtaining the step (2) carries out quenched and filtering successively, obtains refining liquation；
(4) the refining liquation casting for obtaining the step (3), obtains ingot casting；
(5) ingot casting that the step (4) obtains is heat-treated, obtains magnalium kirsite.
Magnalium kirsite provided by the invention, is formed according to element, preferably includes the Al of 83~84% weight percentages,
More preferably 83.5%.In the present invention, the dimensional stability of magnalium kirsite, but aluminium can be increased by improving the content of aluminium element
Constituent content, which improves, can cause the increase of aluminium zinc liquid-solid phase line width, dendrite to increase, be segregated the problem of serious, reduce allumen stream
Dynamic property and casting character, so the weight percentage of aluminium element is preferably 83~84%.
Magnalium kirsite provided by the invention, is formed according to element, preferably includes the Zn of 10~11% weight percentages,
More preferably 10.5%.In the present invention, the Zn-ef ficiency can play a part of supplement reinforcing, and can improve magnalium kirsite
Plasticity
Magnalium kirsite provided by the invention, is formed according to element, preferably includes the Mg of 2~3% weight percentages.
In the present invention, the magnesium elements can mutually improve the mechanical property of magnalium kirsite as enhancing, such as hardness, tensile property,
The wearability of alloy, and the ratio of the invention by controlling magnesium elements and Zn-ef ficiency can be increased, improve the hot crackability of alloy
Energy.
Magnalium kirsite provided by the invention, is formed according to element, preferably includes 0.2~0.3% weight percentage
Si.In the present invention, the addition of the element silicon can improve the mobile performance of magnalium kirsite, and the dissociation of silicon phase is ftractureed and cut
The wearability of magnalium kirsite can also be improved by splitting the effect of matrix.
Magnalium kirsite provided by the invention, is formed according to element, preferably includes 1.2~1.5% weight percentages
Cu, more preferably 1.3%.In the present invention, the copper can mutually improve the mechanical property of magnalium kirsite as enhancing,
Such as hardness, tensile property, it can also increase the wearability of alloy.
Magnalium kirsite provided by the invention, is formed according to element, preferably includes the lanthanum of 0.5~1% weight percentage
It is mixed rare-earth elements, more preferably 0.5%.In the present invention, the group of the lanthanides mixed rare-earth elements preferably include 0.3% La,
0.1% Nd and 0.1% Ce.In the present invention, the addition of the group of the lanthanides mixed rare-earth elements has change to magnalium kirsite
Matter effect, Microalloying Effect, catharsis, magnalium kirsite crystal grain can be refined, improve Wear Resistance, improve magnalium zinc
Alloy high-temp performance.
Magnalium kirsite provided by the invention, is formed according to element, preferably includes the iron member of 0.5% weight percentage
Element.In the present invention, the ferro element, manganese element can form the AlFeMnSi phases of crab shape with aluminium element and element silicon, carry
The decay resistance of high alloy.
Present invention also offers the preparation method of magnalium kirsite described in above-mentioned technical proposal, comprise the following steps：
(1) by aluminium sheet successively preheated, fusing and electromagnetic agitation, aluminum melt is obtained；
(2) aluminum melt for obtaining the step (1) and zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and
Group of the lanthanides mischmetal and deslagging agent mixing carry out melting, obtain mixed molten liquid；
(3) mixed molten liquid for obtaining the step (2) carries out quenched and filtering successively, obtains refining liquation；
(4) the refining liquation casting for obtaining the step (3), obtains ingot casting；
(5) ingot casting that the step (4) obtains is heat-treated, obtains magnalium kirsite.
In the present invention, deacidification and processing of drying in the shade further preferably are included successively before the aluminium sheet preheating.In the present invention, it is described
The aluminium content of aluminium sheet is preferably greater than 99.7%.
The present invention is deacidified before preferably the aluminium sheet is preheated.In the present invention, the deacidification can remove surface
Metal oxide and grease.The present invention does not have special restriction to the mode of the deacidification, ripe using those skilled in the art
The deacidification mode known, specifically, as used the useless cathode aluminum plate of alkaline solution cleaning, in embodiments of the present invention, the alkali
Property solution be preferably mass fraction be 20% sodium carbonate liquor.
After the completion of deacidification, the aluminium sheet after deacidification is preferably carried out processing of drying in the shade by the present invention.The present invention is to the processing of drying in the shade
Temperature, the time there is no special restriction, use is well known to those skilled in the art, can remove moisture in aluminium sheet completely i.e.
Can.
In the present invention, the aluminium sheet is preferably useless cathode aluminum plate, and the present invention does not have to the source of the useless cathode aluminum plate
Any special restriction, using commercial goods well known to those skilled in the art, specifically, the useless negative electrode such as electrolytic zinc plant
Aluminium sheet.
The present invention by aluminium sheet successively it is preheated, fusing and electromagnetic agitation, obtain aluminum melt.In the present invention, the preheating
Temperature be preferably 620~650 DEG C, more preferably 625~640 DEG C, most preferably 630~635 DEG C；The time of the preheating
Preferably 1~1.5h, more preferably 1.2h.Heretofore described preheating can refine rich aluminium Dendritic TiC is thin, reduce intergranular between
Gap.
After the completion of preheating, the present invention is melted the aluminium sheet after preheating.In the present invention, the temperature of the fusing is preferred
For 680~700 DEG C, more preferably 690~695 DEG C, the present invention does not have special restriction to the time of the fusing, can make aluminium
Plate is completely melt.
After the completion of fusing, melting product is carried out electromagnetic agitation by the present invention, obtains aluminum melt.In the present invention, the electricity
The rotating speed of magnetic stirring is preferably 100~800rpm, more preferably 200~400rpm；The time of the electromagnetic agitation is preferably 0.2
~0.3h, more preferably 0.2~0.24h.In the present invention, electromagnetic agitation is carried out to the useless cathode aluminum plate after fusing can speed up
The release of heat, change the type of flow of melt, can effectively suppress column crystals growth, make crystal grain isometry, may also speed up
The courses of reaction such as diffusion, dissolving, deoxidation, shortening smelting cycle, reduce gross segregation while changing and separating out phase morphology and show
Microsegregation.
After obtaining aluminum melt, the present invention by the aluminum melt and zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source with
And group of the lanthanides mischmetal and deslagging agent mixing carry out melting, obtain mixed molten liquid.In the present invention, the temperature of the melting is excellent
Elect 660~700 DEG C, more preferably 670~680 DEG C as；The present invention does not have special restriction, Neng Goubao to the time of the melting
Demonstrate,prove the complete melting of raw material.
The present invention does not have special restriction to the dosage of the deslagging agent, using deslagging agent well known to those skilled in the art
Dosage, specifically, the dosage of deslagging agent is preferably the 0.002~0.02% of aluminum melt quality.
The present invention is to the zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and group of the lanthanides mischmetal and removes
The source of slag agent does not have special restriction, using commercial goods well known to those skilled in the art, specifically, as zinc-aluminium closes
Gold, magnesium alloy, silico-aluminum, albronze, ferroaluminium, aluflex, titanium-aluminium alloy and prodan deslagging agent.
The present invention is to the aluminum melt, zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and group of the lanthanides mischmetal
And the charging sequence of deslagging agent does not have any special restriction, using charging sequence well known to those skilled in the art；
In embodiments of the present invention, preferably first by aluminum melt, zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and deslagging agent
Mixing, adds group of the lanthanides mischmetal.In the present invention, the group of the lanthanides mischmetal can avoid rare earth element being eventually adding
It is oxidized.
After obtaining mixed molten liquid, the alloying element component in preferred pair mixed molten liquid of the present invention is measured, when alloy member
When element combination can not reach the element composition requirement of the magnalium kirsite, to the element in mixed molten liquid by way of adding
Composition is adjusted, and the element of mixed molten liquid is formed the standard for meeting final products magnalium kirsite.
After obtaining mixed molten liquid, the present invention carries out the mixed molten liquid quenched and filtering successively, obtains refining liquation.This
Invention does not have special mode to the quenched concrete mode, using quenched mode well known to those skilled in the art,
Specifically, in the mixed molten liquid as described in being passed into refinery gas.In the present invention, the refinery gas is preferably nitrogen.This
In invention, the quenched oxide impurity that can be removed in mixed molten liquid, alkali metal, salt and the hydrogen of dissolving.
After quenched, the present invention by it is described it is quenched after mixed molten liquid filtered, obtain refine liquation.The present invention is to described
The concrete mode of filtering does not have special mode, using filter type well known to those skilled in the art, specifically, such as adopting
Filtered with porous ceramic filter.In the present invention, the oxide that the filtering can be removed further in mixed molten liquid is miscellaneous
Matter.
Obtain after refining liquation, the present invention refines liquation casting by described, obtains ingot casting.The present invention is to the casting
The concrete mode of shaping does not have special restriction, using casting mode well known to those skilled in the art, specifically,
Such as continuous casting continuous forging.
After obtaining ingot casting, the ingot casting is heat-treated by the present invention, obtains magnalium kirsite.In the present invention, it is described
Heat treatment includes solution treatment and Ageing Treatment successively.In the present invention, the temperature of the solution treatment is preferably 250~360 DEG C,
More preferably 280~320 DEG C, most preferably 300~310 DEG C；The time of the solution treatment is preferably 2~8h, more preferably
5.5~6.5h.The speed that the present invention is heated to solid solution temperature to ingot casting does not have special restriction, using people in the art
The rate of heat addition known to member, specifically, such as 10~20 DEG C/min.In the present invention, the ingot casting is heated to solid solubility temperature
After the time for reaching the solution treatment, the present invention is preferably cooled down solid solution product.Speed of the present invention to the cooling
There is no special restriction, using the type of cooling well known to those skilled in the art, specifically, such as water cooling.In the present invention,
The solution treatment can eliminate the dendrite in ingot casting microscopic structure, make white point-like hardening constituent Dispersed precipitate, obtain uniform
Supersaturated solid solution tissue, while the mechanical property of ingot casting can be improved.
Obtain after being dissolved product, the solid solution product is carried out Ageing Treatment by the present invention, obtains magnalium kirsite.In this hair
In bright, the temperature of the Ageing Treatment is preferably 50~150 DEG C, more preferably 100~120 DEG C；The time of the Ageing Treatment
Preferably 10~30min, more preferably 18~22min.In the present invention, the Ageing Treatment can improve the hard of magnalium kirsite
Degree.
After the completion of Ageing Treatment, preferred pair Ageing Treatment product of the present invention is post-processed to obtain magnalium kirsite.At this
In invention, the post processing uses mode well known in the art, specifically, such as going cast gate overlap, arrangement, inspection, packing bundled
Deng.
Magnalium kirsite provided by the invention and preparation method thereof is described in detail with reference to embodiment, still
They can not be interpreted as limiting the scope of the present invention.
Embodiment 1
A kind of magnalium kirsite, is formed according to element, includes the component of following weight percentage：84% Al, 11%
Zn, 2% Mg, 0.3% Si, 0.5% Fe, 1.3% Cu, 0.2%Ti, 0.2% Mn, 0.5% group of the lanthanides mixing
Rare earth (includes 0.3% La, 0.1% Nd and 0.1 Ce).
Preparation method comprises the following steps：
(1) by the useless cathode aluminum plate (aluminium content is preferably greater than 99.7%) of the electrolytic zinc plant carbon that mass fraction is 20%
Acid sodium solution is deacidified, then carries out processing of drying in the shade, and is then preheated 1-2h at 620 DEG C successively, is melted 0.5h at 680 DEG C,
Carry out electromagnetic agitation 0.5h at 100 rpm again, obtain aluminum melt；
(2) melting at 630 DEG C after mixing aluminum melt, zinc source, magnesium source, silicon source with copper source, it is dilute to add group of the lanthanides mixing
Soil and deslagging agent are mixed in melting at 620 DEG C, obtain mixed molten liquid, and the dosage of deslagging agent is the 0.005% of aluminum melt quality,
Alloying element component in mixed molten liquid is measured, when alloying element combination can not reach the element of the magnalium kirsite
During composition requirement, the element composition in mixed molten liquid is adjusted by way of adding, forms the element of mixed molten liquid
Meet the standard of final products magnalium kirsite；
(3) it is quenched that nitrogen progress will be passed through in mixed molten liquid, is then filtered by porous ceramic filter, obtains essence
Refine liquation；
(4) liquation continuous casting continuous forging casting will be refined, obtains ingot casting；
(5) ingot casting is subjected to solution treatment 2h at 250 DEG C, then carries out water cooling, the load after water cooling is entered at 150 DEG C
Row Ageing Treatment 10min, finally bundled obtain magnalium kirsite through past cast gate overlap, arrangement, inspection, packing.
Performance test, test result are carried out to magnalium kirsite made from embodiment 1：Hardness is 133BHN, tensile strength
For 403MPa, elongation 0.90%, salt spray resistance processing is all more than 100 hours.
Embodiment 2
A kind of magnalium kirsite, is formed according to element, includes the component of following weight percentage：
83% Al, 11% Zn, 3% Mg, 0.2% Si, 0.5% Fe, 1.4% Cu, 0.2%Ti,
0.2% Mn, 0.5% group of the lanthanides mischmetal (including 0.3% La, 0.1% Nd and 0.1 Ce).
Preparation method comprises the following steps：
(1) by the useless cathode aluminum plate (aluminium content is preferably greater than 99.7%) of the electrolytic zinc plant carbon that mass fraction is 20%
Acid sodium solution is deacidified, then carries out processing of drying in the shade, and is then preheated 1 h at 660 DEG C successively, is melted 0.5h at 700 DEG C, then
Electromagnetic agitation 0.2-0.3h is carried out at 800 rpm, obtains aluminum melt；
(2) melting at 630 DEG C after mixing aluminum melt, zinc source, magnesium source, silicon source with copper source, it is dilute to add group of the lanthanides mixing
Soil and deslagging agent are mixed in melting at 620 DEG C, obtain mixed molten liquid, and the dosage of deslagging agent is the 0.005% of aluminum melt quality,
Alloying element component in mixed molten liquid is measured, when alloying element combination can not reach the element of the magnalium kirsite
During composition requirement, the element composition in mixed molten liquid is adjusted by way of adding, forms the element of mixed molten liquid
Meet the standard of final products magnalium kirsite；
(3) it is quenched that nitrogen progress will be passed through in mixed molten liquid, is then filtered by porous ceramic filter, obtains essence
Refine liquation；
(4) liquation continuous casting continuous forging casting will be refined, obtains ingot casting；
(5) ingot casting is subjected to solution treatment 8h at 360 DEG C, then carries out water cooling, the load after water cooling is entered at 50 DEG C
Row Ageing Treatment 30min, finally bundled obtain magnalium kirsite through past cast gate overlap, arrangement, inspection, packing.
Performance test, test result are carried out to magnalium kirsite made from embodiment 2：Hardness is 130BHN, tensile strength
For 400MPa, elongation 0.85%, salt spray resistance processing is all more than 100 hours.
Comparative example
Magnalium kirsite is prepared using preparation method same as Example 1, differs only in the composition of magnalium kirsite
In do not contain group of the lanthanides mixed rare-earth elements, the group of the lanthanides mixed rare-earth elements in embodiment 1 are replaced with into aluminium element.
Performance test, test result are carried out to magnalium kirsite made from comparative example：Hardness is 120BHN, and tensile strength is
There is corrosion phenomenon in 394MPa, elongation 0.66%, salt spray resistance processing.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of magnalium kirsite, is formed according to element, include the component of following weight percentage：83~84% Al, 10
~11% Zn, 2~3% Mg, 0.2~0.3% Si, 0.5% Fe, 0.2% Mn, 1.2~1.5% Cu, 0.1~
0.2%Ti, 0.5~1% group of the lanthanides mischmetal, the group of the lanthanides mixed rare-earth elements include 0.3% La, 0.1% Nd with
And the Ce of surplus；
The preparation method of the magnalium kirsite, comprises the following steps：
(1) by aluminium sheet successively preheated, fusing and electromagnetic agitation, aluminum melt is obtained；
(2) aluminum melt for obtaining the step (1) and zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and group of the lanthanides
Mischmetal and deslagging agent mixing carry out melting, obtain mixed molten liquid；
(3) mixed molten liquid for obtaining the step (2) carries out quenched and filtering successively, obtains refining liquation；
(4) the refining liquation casting for obtaining the step (3), obtains ingot casting；
(5) ingot casting that the step (4) obtains is heat-treated, obtains magnalium kirsite.
2. magnalium kirsite according to claim 1, it is characterised in that include the component of following weight percentage：
84% Al, 11% Zn, 2% Mg, 0.3% Si, 0.5% Fe, 1.3% Cu's, 0.2%Ti, 0.2%
Mn, 0.5% group of the lanthanides mischmetal.
3. magnalium kirsite according to claim 1, it is characterised in that also include before aluminium sheet preheating in the step (1)：
The aluminium sheet is deacidified successively and processing of drying in the shade.
4. magnalium kirsite according to claim 1, it is characterised in that in the step (1) temperature of preheating for 620~
650 DEG C, the time of the preheating is 1~1.5h.
5. the magnalium kirsite according to claim 1 or 4, it is characterised in that the temperature of fusing is in the step (1)
680~700 DEG C.
6. magnalium kirsite according to claim 1, it is characterised in that in the step (2) temperature of melting be 660~
680℃。
7. magnalium kirsite according to claim 1, it is characterised in that heat treatment includes solid successively in the step (5)
Molten processing and Ageing Treatment.
8. magnalium kirsite according to claim 7, it is characterised in that the temperature of the solution treatment is 250~360
DEG C, the time of the solution treatment is 2~8h.
9. magnalium kirsite according to claim 7, it is characterised in that the temperature of the Ageing Treatment is 50~150 DEG C,
The time of the Ageing Treatment is 10~30min.
10. the preparation method of magnalium kirsite, comprises the following steps described in claim 1~9 any one：
(1) by useless cathode aluminum plate successively preheated, fusing and electromagnetic agitation, aluminum melt is obtained；
(2) aluminum melt for obtaining the step (1) and zinc source, magnesium source, silicon source, Tong Yuan, source of iron, manganese source, titanium source and group of the lanthanides
Mischmetal and deslagging agent mixing carry out melting, obtain mixed molten liquid；
(3) mixed molten liquid for obtaining the step (2) carries out quenched and filtering successively, obtains refining liquation；
(4) the refining liquation casting for obtaining the step (3), obtains ingot casting；
(5) ingot casting that the step (4) obtains is heat-treated, obtains magnalium kirsite.
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