CN110527870A - A kind of high thermal conductivity cast aluminium alloy gold and preparation method thereof containing Mn-Fe-Cu - Google Patents
A kind of high thermal conductivity cast aluminium alloy gold and preparation method thereof containing Mn-Fe-Cu Download PDFInfo
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- CN110527870A CN110527870A CN201910880095.3A CN201910880095A CN110527870A CN 110527870 A CN110527870 A CN 110527870A CN 201910880095 A CN201910880095 A CN 201910880095A CN 110527870 A CN110527870 A CN 110527870A
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- 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
- C22C1/026—Alloys based on aluminium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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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
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Abstract
A kind of high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu, the component including following mass percentage: Mn 0.1%~10.0%；Fe 0.1%~5.0%；Cu 0.1%~5.0%；X 0.1%~5.0%；Impurity element≤0.2%；Its surplus is Al；Wherein X element is the combination of any one or any two or more elements in the elements such as Ce, Y, Ti, B, Mo, Er, Cd, Zr.The application devises a kind of component of high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu, the content of Cu is improved in the component, and it joined the microelement that can form fine metal phase crystal grain, the casting prepared by the component is after T5 is heat-treated, the Cu atom being dissolved in primary aluminium phase is precipitated, and the thermal conductivity of material body is effectively promoted.Furthermore, the fine metal phase crystal grain that microelement is formed plays the role of controlling process of setting refining alloy tissue as forming core fulcrum, and these microelements exist only in alloy structure grain boundaries and enter primary aluminium phase without being dissolved, and also play very important effect for improving alloy thermal conductivity.
Description
Technical field
The present invention relates to a kind of cast aluminium alloy gold more particularly to a kind of high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu and its
Preparation method.
Background technique
With the increasingly raising of living standard, people are higher and higher to the pursuit of New Products & New Technology, and science and technology updates and new
The update cycle of product is getting faster, especially the electric equipment products closely bound up with people's daily life.And electronic apparatus
Product is increasingly prone to miniaturization, high-speed cruising development, requirement of the electric equipment products of this development model to heat dissipation performance
It is higher and higher.The principal element for determining electric equipment products heat dissipation performance is the material of radiating element.Currently, most of radiator
Part is made of aluminium alloy, and aluminium alloy mainly includes two major classes: wrought aluminium alloy and cast aluminium alloy gold.Wrought aluminium alloy is to pass through
Punching press the techniques such as is bent, rolls, squeezing and makes its tissue, the changed aluminium alloy of shape.Cast aluminium alloy gold can use metal casting
Forming technology directly obtains the aluminium alloy of part.
Past, wrought aluminium alloy are occupied an leading position in the preparation of radiating element, generally using plate welding or profile
Directly utilize.With the requirement of product up-gradation, the shape of radiating element becomes increasingly complex, and profile and weldment are no longer satisfied
It is required that therefore more and more radiating element needs the method cast to manufacture.But compared with wrought aluminium alloy, aluminium is cast
Alloy contains more solute element, and the thermal conductivity of alloy material substantially reduces.For example, the heat of A380 casting alloy routinely
Conductance is 105~108W/ (mK), and the thermal conductivity of 6061 wrought aluminium alloys is 151~202W/ (mK), therefore, by thermal conductivity
The heat dissipation performance of the radiator of the low aluminium alloy preparation of rate is had a greatly reduced quality, and has been difficult to meet actual requirement under the conditions of very much.
In order to meet market demands, need to improve on the basis of meeting mechanical property requirements the thermal conductivity of cast aluminium alloy gold.
Summary of the invention
The present invention solves the problems, such as that current cast aluminium alloy gold thermal coefficient is low, provides a kind of height containing Mn-Fe-Cu and leads
Hot cast aluminium alloy gold.
To achieve the goals above, the high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu that this application provides a kind of, including with
The component of lower mass percentage: Mn 0.1%~10.0%；Fe 0.1%~5.0%；Cu 0.1%~5.0%；X 0.1%
~5.0%；Impurity element≤0.2%；Its surplus is Al；Wherein X element is appointing in Ce, Y, Ti, B, Mo, Er, Cd, Zr element
It anticipates the combinations of a kind of or any two or more elements.
As the further improvement of the application, the quality of each component in the high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu
Percentage composition is as follows: Mn 0.3%~8.0%；Fe 0.1%~3.5%；Cu 0.1%~3.5%；X 0.1%~2.5%；
Impurity element≤0.2%；Its surplus is Al；Wherein X element be Ce, Y, Ti, B, Mo, Er, Cd, Zr element in any one or
The combination of any two or more elements.
As the further improvement of the application, the quality of each component in the high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu
Percentage composition is as follows: Mn 0.5%~3.0%；Fe 0.2%~1.5%；Cu 0.1%~1.5%；X 0.1%~0.5%；
Impurity element≤0.2%；Its surplus is Al；Wherein X element be Ce, Y, Ti, B, Mo, Er, Cd, Zr element in any one or
The combination of any two or more elements.
To achieve the above object, the preparation side for the high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu that present invention also provides a kind of
Method includes the following steps: S1, Al, Mn, Fe, Cu element is placed in at 700 DEG C~760 DEG C sufficiently fusing, after mixing, takes off
Slag obtains the first melt；S2, Xiang Wendu maintain be added in 700 DEG C~760 DEG C of first melt Ce, Y, Ti, B, Mo,
The combination of any one or any two or more elements in Er, Cd, Zr element is sufficiently melted, and is uniformly mixed, and it is molten to obtain second
Body；S3, to the second melt degasification and the ingredient of second melt is adjusted, obtains third melt；S4, the third is melted
Body is cast, and rough-cast aluminium alloy is obtained；S5, T5 heat treatment is carried out to the rough-cast aluminium alloy, obtains casting aluminium
Alloy.
As the further improvement of the application, the temperature of fusing described in step S1 and step S2 is 750 DEG C.
As the further improvement of the application, degasification is carried out to second melt using nitrogen or argon gas in step S3.
As the further improvement of the application, the technique of casting described in step S4 is permanent mold casting, low pressure casting, difference
Die casting makes, any one in extrusion casint.
As the further improvement of the application, Al, Mn, Fe, Cu, Ce, Y, Ti, B, Mo, Er, Cd, Zr element is with pure
The form of element or alloy pig is added.
The beneficial effects of the present invention are the application devises a kind of group of high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu
Point, the content of Cu is improved in the component, and joined the Ce, Y that can form fine metal phase crystal grain, Ti, B, Mo, Er, Cd,
The combination of any one or any two or more elements in the microelements such as Zr, the casting prepared by the component is by T5 warm
After reason, the Cu atom being dissolved in primary aluminium phase is precipitated, and the thermal conductivity of material body is effectively promoted.In addition, microelement shape
At fine metal phase crystal grain play the role of controlling process of setting refining alloy tissue as forming core fulcrum, and these are micro
Element exists only in alloy structure grain boundaries and enters primary aluminium phase without being dissolved, and also plays very for improving alloy thermal conductivity
Important role.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment pair
Technical scheme is clearly and completely described.Obviously, described embodiment is only some embodiments of the present application,
Instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, shall fall in the protection scope of this application.
A kind of high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu, the component including following mass percentage: Mn 0.1%
~10.0%；Fe 0.1%~5.0%；Cu 0.1%~5.0%；X 0.1%~5.0%；Impurity element≤0.2%；Remaining
Amount is Al；Wherein X element is any one or any two or more elements in the elements such as Ce, Y, Ti, B, Mo, Er, Cd, Zr
Combination.After T5 is heat-treated, the thermal conductivity of the cast aluminium alloy gold can surpass the cast aluminium alloy gold prepared by said components
It crosses 190W/ (mK), yield strength is more than 130MPa, and tensile strength is more than 220MPa and elongation percentage is more than 4%.
In the application, the mass percentage of each component can be excellent in the high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu
It is selected as follows: Mn 0.3%~8.0%；Fe 0.1%~3.5%；Cu 0.1%~3.5%；X 0.1%~2.5%；Impurity
Element≤0.2%；Its surplus is Al；Wherein X element for any one in the elements such as Ce, Y, Ti, B, Mo, Er, Cd, Zr or is appointed
It anticipates the combinations of two or more elements.
In the application, the mass percentage of each component can be excellent in the high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu
It is selected as follows: Mn 0.5%~3.0%；Fe 0.2%~1.5%；Cu 0.1%~1.5%；X 0.1%~0.5%；Impurity
Element≤0.2%；Its surplus is Al；Wherein X element for any one in the elements such as Ce, Y, Ti, B, Mo, Er, Cd, Zr or is appointed
It anticipates the combinations of two or more elements.After T5 is heat-treated, the casting aluminium closes the cast aluminium alloy gold prepared by said components
The thermal conductivity of gold can be more than 190W/ (mK), and yield strength is more than 130MPa, and tensile strength is more than that 220MPa and elongation percentage are super
Cross 4%.
The preparation method of high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu described herein, include the following steps: S1,
Al, Mn, Fe, Cu element are placed at 700 DEG C~760 DEG C and sufficiently melts, are uniformly mixed, is skimmed, it can be directly to molten when skimming
Body is skimmed, and can also be carried out slag making to melt first with auxiliary agent and be skimmed again, obtain the first melt；S2, it is maintained to temperature
Be added in 700 DEG C~760 DEG C of first melt in the elements such as Ce, Y, Ti, B, Mo, Er, Cd, Zr any one or appoint
It anticipates the combinations of two or more elements, sufficiently melts, be uniformly mixed, the general melt-blended time is at least 2 hours, obtains the
Two melts, described second melts intracorporal molten metal temperature and ingredient keeps uniform state；S3, to the second melt degasification simultaneously
The ingredient for adjusting second melt, obtains third melt, and the process of degasification is to be carried out using nitrogen or argon gas to metal bath
Degasification makes melt reach scheduled hydrogen content；When detecting the alloying component of melt, if reaching pre-provisioning request, do not need to adjust
Whole bath composition then needs that additional element is added into second melt and is adjusted to ingredient if it exceeds deviation, with
Meet default component requirements, such as: the ingredient of detection third melt is wanted if the component content of any a certain element is not up to predetermined
Ask, then to keep being added in 700 DEG C~760 DEG C of melt component content can be made to reach pre-provisioning request respective element (such as:
Mn, Fe, Cu, in X element any one or it is any several), after the completion of fusing, detected again, constantly repeat that phase is added
Element-fusing-detection process is answered, the adjustment of third bath composition is carried out, third bath composition is finally made to reach pre-provisioning request；
S4, the third melt is subjected to die casting, obtains blank aluminium alloy castings, when die casting, the third melt needs to be maintained at one
Fixed temperature, to meet subsequent casting technique；The technique of the casting be permanent mold casting, low pressure casting, counter-pressure casting,
Any one in extrusion casint；S5, T5 heat treatment is carried out to the blank aluminium alloy castings, obtains the aluminium containing Mn-Fe-Cu and closes
Golden casting.
In the application, metal element A l, Mn, Fe, Cu, Ce, Y, Ti, B, Mo, Er, Cd, Zr of the addition etc. are with pure member
The form of element or alloy pig is added；The step S1 and step of the preparation method of the high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu
When the temperature of fusing described in rapid S2 is 750 DEG C, effect is preferable, and Al, Mn, Fe, Cu element first arrive furnace heats before being added
Melting temperature, such as 750 DEG C, the smelting furnace can be the empty stove with crucible.
In the application, to realize that cast aluminium alloy gold thermal conductivity can be more than 190W/ (mK), it is super that yield strength can be provided
130MPa is crossed, tensile strength is more than 220MPa and elongation percentage is more than 4%, and carrying out heat treatment to casting is essential link,
This alloy is heat-treated using T5, and this technique can properly increase yield strength under the premise of not many reduction elongation percentage.T5
Heat treatment is that solution treatment adds incomplete artificial aging, and solution treatment refers to that alloy, which is heated to high temperature monophase field constant temperature, to be kept,
Rapid cooling after being dissolved into superfluous phase sufficiently in solid solution, to obtain the heat treatment process of supersaturated solid solution；Incomplete people
Working hour effect is excellent comprehensive mechanical property to be obtained, to be obtained using relatively low aging temp or shorter soaking time
The heat treatment process of saturated solid solution obtains maximum hardness and highest tensile strength.In the application, timeliness in T5 heat treatment
The realization of process, the temperature of general ageing strengthening are 150 DEG C~220 DEG C, and the ageing strengthening time is to differ a few hours, according to casting
Structure and size determine.In ag(e)ing process, the Cu phase being solid-solubilized in primary aluminium is precipitated, and alloy strength not only can be improved, simultaneously
Heat conduction velocity in Al phase can again accelerated, improves alloy thermal conductivity.
It is closed according to the component of the high thermal conductivity cast aluminium alloy gold provided by the present application containing Mn-Fe-Cu and high thermal conductivity casting aluminium
The preparation method of gold, this application provides three groups of embodiments, this three groups of embodiments give to be led according to the height of different component preparation
Hot cast aluminium alloy gold is in as cast condition and the yield strength of the aluminium alloy after T5 is heat-treated, tensile strength, elongation percentage and thermal conductivity
The temperature of the parameter of rate, the ageing strengthening of the T5 heat treatment is 180 DEG C, and the time of ageing strengthening is 90mins, specific interior
Rong Rubiao mono-, the casting in table one at least need it is 24 hours cooling after just can be carried out processing, obtain meeting ASTM B557M-10 and want
The stretching sample size asked.
Table one: the performance indicator of different cast aluminium alloy golds
As described in table one, the yield strength without the cast aluminium alloy gold of T5 heat treatment is up to 110MPa, tensile strength
Up to 187MPa, elongation percentage are more than 4%, and thermal conductivity is up to 183MPa；High thermal conductivity casting aluminium after T5 is heat-treated closes
The yield strength of gold is not less than 130MPa, and tensile strength is not less than 220MPa, and elongation percentage is more than 4%, and thermal conductivity is more than 190W/
(m·K).According to the comparison of data in table it is found that the present invention by improve component in Cu element content and be added Ce, Y,
The microelements such as Ti, B, Mo, Er, Cd, Zr, and T5 heat treatment has been carried out to casting during preparation, it could guarantee
Under conditions of cast aluminium alloy gold yield strength and tensile strength, the thermal conductivity of cast aluminium alloy gold is improved.Aluminium is cast in the application
The title of alloy sample is named by mass percentage, and meaning is as follows, such as: Al-1.7Mn-0.8Fe-1.0Cu-0.1Zr-
0.15Er indicate the mass percentage in cast aluminium alloy gold comprising Mn, Fe, Cu, Zr, Er be respectively 1.7%, 0.8%,
1.0%, 0.1% and 0.15%, surplus Al.
In the application, the component and content of alloying element are to influence the principal element of alloy property, such as:
Cu element: solubility of the Cu in aluminium alloy is higher, and Cu can be present in the form of solid solution phase in process of setting
In solidified structure, under the as-cast condition without Overheating Treatment, Cu can play solution strengthening effect in aluminium alloy, in certain journey
The heat that alloy strength can be improved on degree, but be present in solidified structure primary aluminium phase can be dissolved during transmitting
Atom Cu is hindered, and the thermal conductivity of metal is mainly conducted electrons spread rate and determined, pure metal thermal conductivity be it is highest, just
It will lead to material body lattice there are solid solution element atom in raw phase to be distorted, make the reduction of electrons spread rate, therefore alloy
As cast condition thermal conductivity is lower, but the Cu element by being dissolved after T5 aging strengthening model in primary aluminium phase is precipitated, the thermal conductivity of material body
Rate can then improve, to reduce heat transfer efficiency.In addition, can make in primary aluminium phase by the cast aluminium alloy gold that T5 is heat-treated
The Cu atom of solid solution is precipitated, and forms the Al of nanometer enhancing2Cu, and then improve alloy strength.
Mn element: can improve release property, prevent aluminium alloy in casting process from sending out under the high temperature conditions with iron/steel die
Raw reaction, is alternatively arranged as intermetallic compound needed for forming second-phase strength.
Fe element: being generally considered to be harmful element during preparing aluminium alloy, but in the present invention, and iron can be with
Sticking to mould tendency is further decreased as useful alloy element, although dropping low-alloyed plasticity to a certain degree, the presence of iron increases
The quantity of the second phase is added, so as to improve the strength and stiffness of material.
X element: any one or any two or more members in the elements such as X element Ce, Y, Ti, B, Mo, Er, Cd, Zr
The combination of element, X element are the microelements that microalloy can be formed with Al, and solubility of the X element in aluminium alloy is lower, very little
Additional amount can be formed as tiny metal phase crystal grain, such as AlZr, AlMo, AlCd phase at casting solidification initial stage, as forming core
Fulcrum plays the role of controlling process of setting refining alloy tissue, and then improves alloy casting character, control process of setting.Simultaneously
These X microelements exist only in alloy structure grain boundaries and enter primary aluminium phase without being dissolved, this is for improving alloy thermal conductivity
Rate important role.
In conclusion the application devises a kind of component of high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu, in the component
The content of Cu is improved, and joined the micro members such as Ce, Y, Ti, B, Mo, Er, Cd, the Zr that can form fine metal phase crystal grain
The combination of any one or any two or more elements in element, the casting prepared by the component are come into being after T5 is heat-treated
The Cu atom being dissolved in aluminium phase is precipitated, and the thermal conductivity of material body is effectively promoted.In addition, the tiny gold that microelement is formed
Symbolic animal of the birth year crystal grain as forming core fulcrum play the role of control process of setting refining alloy tissue, and these microelements there is only
Enter primary aluminium phase without being dissolved in alloy structure grain boundaries, also plays very important work for improving alloy thermal conductivity
With.
The application is described only in conjunction with the most practical preferred embodiment being presently considered above, it is to be understood that
Above description is not the limitation to the application, and the application is also not limited to the example above, the ordinary skill people of the art
The variations, modifications, additions or substitutions that member is made in the essential scope of the application, also should belong to the protection scope of the application.
Claims (8)
1. a kind of high thermal conductivity cast aluminium alloy gold containing Mn-Fe-Cu, which is characterized in that the component including following mass percentage:
Wherein X element is the combination of any one or any two or more elements in Ce, Y, Ti, B, Mo, Er, Cd, Zr element.
2. the high thermal conductivity cast aluminium alloy gold according to claim 1 containing Mn-Fe-Cu, which is characterized in that the high thermal conductivity casting
The mass percentage for making each component in aluminium alloy is as follows:
Wherein X element is the combination of any one or any two or more elements in Ce, Y, Ti, B, Mo, Er, Cd, Zr element.
3. the high thermal conductivity cast aluminium alloy gold according to claim 1 containing Mn-Fe-Cu, which is characterized in that the high thermal conductivity casting
The mass percentage for making each component in aluminium alloy is as follows:
Wherein X element is the combination of any one or any two or more elements in Ce, Y, Ti, B, Mo, Er, Cd, Zr element.
4. a kind of preparation method of the high thermal conductivity cast aluminium alloy gold described in claim 1-3 any one containing Mn-Fe-Cu,
It is characterized in that, includes the following steps:
S1, Al, Mn, Fe, Cu element are placed at 700 DEG C~760 DEG C and are sufficiently melted, after mixing, skimmed, it is molten to obtain first
Body；
S2, Xiang Wendu maintain 700 DEG C~760 DEG C of interior addition Ce, Y, Ti, B, Mo, Er, Cd, Zr element of first melt
In any one or any two or more elements combination, sufficiently melt, be uniformly mixed, obtain the second melt；
S3, to the second melt degasification and the ingredient of second melt is adjusted, obtains third melt；
S4, the third melt is cast, obtains rough-cast aluminium alloy；
S5, T5 heat treatment is carried out to the rough-cast aluminium alloy, obtains cast aluminium alloy gold.
5. the preparation method of the high thermal conductivity cast aluminium alloy gold according to claim 4 containing Mn-Fe-Cu, which is characterized in that step
The temperature of fusing described in rapid S1 and step S2 is 750 DEG C.
6. the preparation method of the high thermal conductivity cast aluminium alloy gold according to claim 4 containing Mn-Fe-Cu, which is characterized in that step
Degasification is carried out to second melt using nitrogen or argon gas in rapid S3.
7. the preparation method of the high thermal conductivity cast aluminium alloy gold according to claim 4 containing Mn-Fe-Cu, which is characterized in that step
The technique of casting described in rapid S4 is permanent mold casting, low pressure casting, counter-pressure casting, any one in extrusion casint.
8. the preparation method of the high thermal conductivity cast aluminium alloy gold according to claim 4 containing Mn-Fe-Cu, which is characterized in that institute
Al, Mn, Fe, Cu, Ce, Y, Ti, B, Mo, Er, Cd, Zr element is stated to be added in the form of pure element or alloy pig.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116024462A (en) * | 2023-01-10 | 2023-04-28 | 深圳市英伦博创轻合金技术有限公司 | High-heat-conductivity pressure casting aluminum alloy and preparation method thereof |
| CN116676512A (en) * | 2023-06-02 | 2023-09-01 | 佛山市营鑫新材料有限公司 | High-temperature-resistant Al-Mn-Fe-Ce die-casting aluminum alloy for cooking range as well as preparation method and application thereof |
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| CN116024462A (en) * | 2023-01-10 | 2023-04-28 | 深圳市英伦博创轻合金技术有限公司 | High-heat-conductivity pressure casting aluminum alloy and preparation method thereof |
| CN116676512A (en) * | 2023-06-02 | 2023-09-01 | 佛山市营鑫新材料有限公司 | High-temperature-resistant Al-Mn-Fe-Ce die-casting aluminum alloy for cooking range as well as preparation method and application thereof |
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