CN105441757B - One kind heat-resisting aluminium alloys of Be containing Mo and preparation method thereof - Google Patents
One kind heat-resisting aluminium alloys of Be containing Mo and preparation method thereof Download PDFInfo
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- CN105441757B CN105441757B CN201510859285.9A CN201510859285A CN105441757B CN 105441757 B CN105441757 B CN 105441757B CN 201510859285 A CN201510859285 A CN 201510859285A CN 105441757 B CN105441757 B CN 105441757B
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- 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
- C22C21/12—Alloys based on aluminium with copper 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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- 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
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- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/057—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 copper as the next major constituent
Abstract
One kind heat-resisting aluminium alloys of Be containing Mo and preparation method thereof, category metal material engineering field.The heat-resisting aluminium alloys of Be containing Mo, chemical composition is by mass percentage：Cu：6~7%, Mn：0.5~0.7%, Ni：0.5~0.7%, Cr：0.3~0.4%, Be：0.3~0.4%, Mo：0.3~0.4%, V：0.2~0.3%, Ti：0.15~0.25%, B：0.01~0.015%, Ce：2.5~3%, La：1.5~2%, surplus is Al and inevitable impurity.Preparation method：(1) in the middle of first melting aluminum chromium, add after other intermediate alloys and aluminium, plus coverture, skimmed after insulation, plus aluminium refining agent, skimming after insulation；(2) cast；(3) solid solution+Ageing Treatment is carried out to strand；Alloy of the present invention, by multi-element alloyed, adjust alloy component range, after heat treatment significantly improves the elevated temperature strength and high temperature endurance performance of alloy, 260~270MPa is up in 250 DEG C of instantaneous tensile strength.The tensile strength of 200 DEG C of heating 200 hours is 233~238Mp, and the tensile strength of 250 DEG C of heating 200 hours is 187~195Mpa.
Description
Technical field
The invention belongs to metal material engineering field, more particularly to a kind of heat-resisting aluminium alloy containing Mo-Be and preparation method thereof.
Background technology
At present, aluminium and aluminium alloy are the metal materials for being only second to steel, are widely used in building, the energy, transport, aviation boat
The field such as it.The application and its research of aluminum and aluminum alloy mateial have also obtained fast development, and various aluminium alloys are widely used.
There is the problem of hot cracking tendency is big in heat-resisting aluminium copper, it is alloy pivot that its main cause, which is, in casting process
Plain Cu composition ranges are usually chosen in the range of 4.5~5.5%, alloy crystallization temperature to reach the reinforcing effect of maximum
Wider range, during casting solidification for anisotropic dendrite development provide adequate condition, after solidification the phase formed powerful
Internal contraction stress, so shrink hot cracking tendency it is big.
The problem of high-temperature instantaneous intensity and strong relatively low high-temperature and durable are also there is in heat-resisting aluminium alloy area research.
The content of the invention
The problem of existing for prior art, the present invention provides a kind of heat-resisting aluminium alloy containing Mo-Be and preparation method thereof, mesh
Be the new aluminium copper for obtaining higher intensity and heat resistance.
Heat-resisting aluminium alloy containing Mo-Be of the invention, its chemical composition is according to mass percent：Cu：6~7%, Mn：0.5~
0.7%, Ni：0.5~0.7%, Cr：0.3~0.4%, Be：0.3~0.4%, Mo：0.3~0.4%, V：0.2~0.3%,
Ti：0.15~0.25%, B：0.01~0.015%, Ce：2.5~3%, La：1.5~2%, surplus is Al and inevitable
Impurity.
The heat-resisting aluminium alloy containing Mo-Be of the present invention, is 260~270MPa in 250 DEG C of high-temperature instantaneous tensile strength；This hair
Bright heat-resisting aluminium alloy containing Mo-Be, the tensile strength heated under the conditions of 200 DEG C 200 hours is 233~238MPa；The present invention
Heat-resisting aluminium alloy containing Mo-Be, under the conditions of 250 DEG C heat 200 hours tensile strength be 187~195MPa.
The preparation method of the heat-resisting aluminium alloy containing Mo-Be of the present invention, comprises the following steps：
Step 1, melting：
Aluminium chromium hardener is put into crucible, 920~930 DEG C are heated to, after it is completely melt, furnace temperature is dropped to 780
~800 DEG C；
By the alloying component of setting, add aluminum bronze intermediate alloy, aluminium manganese intermediate alloy, aluminium beryllium intermediate alloy, in the middle of aluminium nickel
Alloy, aluminium molybdenum intermediate alloy, aluminium vanadium intermediate alloy, Al-Ti-B intermediate alloy, aluminium rare earth intermediate alloy and aluminium, more than 2/3 stove
After material dissolves, coverture is added, after after furnace charge all fusing, 720~730 DEG C is reduced the temperature to and is incubated 15~20min；
After furnace temperature is stable, slag is taken off, added after aluminium refining agent, be incubated after 10~15min and skim at 725~730 DEG C
Slag, obtains refined metals liquation；Wherein aluminium refining agent is added in two times, and first time intrusion is the 3/5 of aluminium refining agent gross mass
~2/3, second of press-in surplus；
Step 2, cast：Casting mould is preheated to 240~260 DEG C, refined metals liquation is poured into strand；
Step 3, it is heat-treated：
Solid solution+Ageing Treatment is carried out to strand, 7~9h is incubated at 525~535 DEG C, is then quenched in 60~100 DEG C of water
Fire, 5~7h is incubated at 170~180 DEG C, heat-resisting aluminium alloy containing Mo-Be is obtained.
Wherein, in step 1, the composition quality content for adding coverture is：Fluorite 35%, quartz sand 20%, Nacl
45%；Add coverture amount be：Every square metre of crucible cross-sectional area adds 0.2~0.3kg；In step l, aluminium refining agent is added
It is for composition quality content：Fluorite 25%, quartz sand 20%, Nacl 55%, add aluminium refining agent total amount be：It is per ton to contain
Mo-Be heat-resisting aluminium alloys add 1~3kg.
Compared with prior art, the features of the present invention and beneficial effect are：
The heat-resisting aluminium copper of the present invention, main added elements Cu composition range is 6~7%, selects the mesh in this scope
's：One is to improve casting character；Two be in order to have the Cu elements of sufficient amount formation resistant to elevated temperatures second phase containing Cu.Re's
Content is 4~5%, and the Re of this content is conducive to improving the casting character of alloy, and and Cu, Mn etc. form the stabilization of infusibility
Intermetallic compound, hinders the sliding between atoms permeating and crystal grain, serves the effect of High-Temperature Strengthening at high temperature.
The present invention is the alloying element such as addition Mn, Ni, Cr, Be, Mo, V, Ti, Re on the basis of made of Al-Cu alloy composition,
The effect that such multi-element alloyed measure can have improves the heat-resistant stability of alloy.Due to Mn, Ni, Cr, Be, Mo, V, Ti,
The addition of a variety of alloying elements such as Re makes the second phase that good stability has been separated out in alloy, and in heat treatment process, these second
Mutually separated out in more scattered state, chemical composition and lattice structure are complicated, the component structure difference with α (Al) is big, form new
The diffusion process of phase is slow, is separated out on crystal boundary in the netted or skeletal like of closing, these second it is mutually most of be that hardness is higher
Intermetallic compound, because they can play a part of hindering Grain Boundary Sliding and dislocation motion in the alloy, improves crystal boundary strong
Degree and creep resisting ability, the intensity and heat resistance of alloy are improved.
Mn therein, Ni, Cr, Be, V, Ti, etc. element, be mainly distributed on intra-die, Intensive intervention body improves alloy
Recrystallization temperature.The atom that Mo, Mn, Cr, Be, Cu, Al can improve aluminium alloy is good for bond strength.The height of α (Al) heat resisting temperature
The low bond strength depending on atom key, in the case of solid solution saturation degree identical, the atom key bond strength of multicomponent alloy
It is higher than bianry alloy.Therefore, element more polyatom bond closes slight higher.Mn elements solidification when can on α (Al) crystal boundary shape
Into TMnPhase, i.e. Cu2Mn3Al20.Because diffusion velocities of the Mn in aluminium is small, the Mn of part is in that supersaturated state stays in α (Al) during solidification
In, secondary T is generated in solution treatmentMnPhase disperse educt.TMnThe dot matrix of phase is complicated, is difficult agglomeration, and thermohardening is again very
Height, therefore improve the heat endurance of alloy.The elements such as Ti, V not only can also form the Al of disperse with crystal grain thinning3M types
Hardening constituent, mutually itself is more stable for these, low with matrix mismatch, can keep symbiosis and epibiosis with matrix, can effectively pin dislocation,
Stable substructure, prevents Grain Boundary Sliding, while suppressing matrix recrystallization, improves matrix recrystallization temperature.Ni shapes in aluminium alloy
Into metallic compound can improve the elevated temperature strength and dimensional stability of alloy, the phase heat endurance is good.Make the intensity of alloy
It is improved with heat endurance.
The main function that other intercrystalline strengthening is also the RE in the important channel for improving aluminium alloy heat resistance, alloy be with
Other elements formation complex compound, is distributed on crystal boundary with web form, the raising grain-boundary strength that they can be strong and anti-compacted
Change ability, intercrystalline crack is difficult development, with good heat resistance.
The heat-resisting aluminium alloy containing Mo-Be of the present invention, by multi-element alloyed, adjusts alloy component range, after heat treatment
The elevated temperature strength and high temperature endurance performance of alloy are significantly improved, 260 are up in 250 DEG C of instantaneous tensile strength~
270MPa.The tensile strength of 200 DEG C of heating 200 hours is 233~238MPa, and the tensile strength of 250 DEG C of heating 200 hours is
187~195MPa.
Brief description of the drawings
Fig. 1 is the micro-organization chart of heat-resisting aluminium alloy containing Mo-Be obtained in the embodiment of the present invention 1, and 100 are heated at 200 DEG C
The micro-organization chart of hour；Wherein：It is low power micro-organization chart, figure (b) high power micro-organization chart to scheme (a).
Embodiment
Closed in the middle of the aluminum bronze intermediate alloy that is used in the embodiment of the present invention, aluminium manganese intermediate alloy, aluminium beryllium intermediate alloy, aluminium nickel
Gold, aluminium molybdenum intermediate alloy, aluminium vanadium intermediate alloy, Al-Ti-B intermediate alloy, aluminium rare earth intermediate alloy and aluminium are industrial products.
The coverture used in the embodiment of the present invention is HZ-WYF type smokeless coverture of the purchase from Central China Aluminum, and composition is pressed
Mass percent is：Fluorite 35%, quartz sand 20%, Nacl 45%.
The aluminium refining agent used in the embodiment of the present invention is HZ-WYJ type smokeless refining agent of the purchase from Central China Aluminum, composition
It is by mass percentage：Fluorite 25%, quartz sand 20%, Nacl 55%.
Specific detailed description is done to the present invention with reference to specific embodiment.
Embodiment 1
Heat-resisting aluminium alloy containing Mo-Be, its chemical composition is according to mass percent：Cu：7%, Mn：0.6%, Ni：
0.7%, Cr：0.4%, Be：0.35%, Mo：0.4%, V：0.3%, Ti：0.25%, B：0.01%, Ce：2.8%, La：
1.8%, surplus is Al and inevitable impurity.
The preparation method of the heat-resisting aluminium alloy containing Mo-Be, comprises the following steps：
Step 1, melting：
Aluminium chromium hardener is put into crucible, 920 DEG C are heated to, after it is completely melt, furnace temperature is dropped to 790 DEG C；
By the alloying component of setting, add in the middle of aluminum bronze intermediate alloy, aluminium manganese intermediate alloy, aluminium beryllium intermediate alloy, aluminium nickel
Alloy, aluminium molybdenum intermediate alloy, aluminium vanadium intermediate alloy, Al-Ti-B intermediate alloy, aluminium rare earth intermediate alloy and aluminium, more than 2/3 stove
After material dissolves, the smokeless coverture of HZ-WYF types is added, the amount for adding coverture is：Every square metre of crucible cross-sectional area is added
0.2kg, after after furnace charge all fusing, reduces the temperature to 730 DEG C and is incubated 20min；
After furnace temperature is stable, slag being taken off, adding the smokeless refining agent of HZ-WYJ types, the total amount for adding aluminium refining agent is：Often
Ton heat-resisting aluminium alloy containing Mo-Be adds 1kg, and skimming after 10min is incubated at 730 DEG C, refined metals liquation is obtained；Wherein aluminium is smart
Refining agent is added in two times, and first time intrusion is the 3/5 of aluminium refining agent gross mass, second of press-in surplus；
Step 2, cast：Casting mould is preheated to 260 DEG C, refined metals liquation is poured into strand；
Step 3, it is heat-treated：
Solid solution+Ageing Treatment is carried out to strand, 8h is incubated at 535 DEG C, then in 100 DEG C of quenching-in water, at 180 DEG C
5h is incubated, heat-resisting aluminium alloy containing Mo-Be is obtained.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, stretching experiment is carried out under the conditions of 250 DEG C, at 250 DEG C
High-temperature instantaneous tensile strength is 270MPa.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, high temperature endurance performance test is carried out：
The tensile strength heated under the conditions of 200 DEG C 200 hours is 237MPa, and the microscopic structure of alloy is shown in figure l.
The tensile strength heated under the conditions of 250 DEG C 200 hours is 192MPa.
Embodiment 2
Heat-resisting aluminium alloy containing Mo-Be, its chemical composition is according to mass percent：Cu：6.5%, Mn：0.65%, Ni：
0.55%, Cr：0.35%, Be：0.4%, Mo：0.3%, V：0.25%, Ti：0.2%, B：0.01%, Ce：2.5%, La：
2%, surplus is Al and inevitable impurity.
The preparation method of the heat-resisting aluminium alloy containing Mo-Be, comprises the following steps：
Step l, melting：
Aluminium chromium hardener is put into crucible, 920 DEG C are heated to, after it is completely melt, furnace temperature is dropped to 780 DEG C；
By the alloying component of setting, add in the middle of aluminum bronze intermediate alloy, aluminium manganese intermediate alloy, aluminium beryllium intermediate alloy, aluminium nickel
Alloy, aluminium molybdenum intermediate alloy, aluminium vanadium intermediate alloy, Al-Ti-B intermediate alloy, aluminium rare earth intermediate alloy and aluminium, more than 2/3 stove
After material dissolves, the smokeless coverture of HZ-WYF types is added, the amount for adding coverture is：Every square metre of crucible cross-sectional area is added
0.3kg, after after furnace charge all fusing, reduces the temperature to 725 DEG C and is incubated 15min；
After furnace temperature is stable, slag being taken off, adding the smokeless refining agent of HZ-WYJ types, the total amount for adding aluminium refining agent is：Often
Ton heat-resisting aluminium alloy containing Mo-Be adds 3kg, and skimming after 15min is incubated at 730 DEG C, refined metals liquation is obtained；Wherein aluminium is smart
Refining agent is added in two times, and first time intrusion is the 2/3 of aluminium refining agent gross mass, second of press-in surplus；
Step 2, cast：Casting mould is preheated to 240 DEG C, refined metals liquation is poured into strand；
Step 3, it is heat-treated：
Solid solution+Ageing Treatment is carried out to strand, 9h is incubated at 525 DEG C, then in 100 DEG C of quenching-in water, at 170 DEG C
5h is incubated, heat-resisting aluminium alloy containing Mo-Be is obtained.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, stretching experiment is carried out under the conditions of 250 DEG C, at 250 DEG C
High-temperature instantaneous tensile strength is 268MPa.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, high temperature endurance performance test is carried out：
The tensile strength heated under the conditions of 200 DEG C 200 hours is 235MPa；The tension of heating 200 hours under the conditions of 250 DEG C
Intensity is 194MPa.
Embodiment 3
Heat-resisting aluminium alloy containing Mo-Be, its chemical composition is according to mass percent：Cu：6%, Mn：0.7%, Ni：
0.6%, Cr：0.3%, Be：0.35%, Mo：0.3%, V：0.3%, Ti：0.25%, B：0.015%, Ce：2.8%, La：
2%, surplus is Al and inevitable impurity.
The preparation method of the heat-resisting aluminium alloy containing Mo-Be, comprises the following steps：
Step 1, melting：
Aluminium chromium hardener is put into crucible, 930 DEG C are heated to, after it is completely melt, furnace temperature is dropped to 800 DEG C；
By the alloying component of setting, add in the middle of aluminum bronze intermediate alloy, aluminium manganese intermediate alloy, aluminium beryllium intermediate alloy, aluminium nickel
Alloy, aluminium molybdenum intermediate alloy, aluminium vanadium intermediate alloy, Al-Ti-B intermediate alloy, aluminium rare earth intermediate alloy and aluminium, more than 2/3 stove
After material dissolves, the smokeless coverture of HZ-WYF types is added, the amount for adding coverture is：Every square metre of crucible cross-sectional area is added
0.3kg, after after furnace charge all fusing, reduces the temperature to 730 DEG C and is incubated 10min；
After furnace temperature is stable, slag being taken off, adding the smokeless refining agent of HZ-WYJ types, the total amount for adding aluminium refining agent is：Often
Ton heat-resisting aluminium alloy containing Mo-Be adds 3kg, and skimming after 10min is incubated at 730 DEG C, refined metals liquation is obtained；Wherein aluminium is smart
Refining agent is added in two times, and first time intrusion is the 2/3 of aluminium refining agent gross mass, second of press-in surplus；
Step 2, cast：Casting mould is preheated to 260 DEG C, refined metals liquation is poured into strand；
Step 3, it is heat-treated：
Solid solution+Ageing Treatment is carried out to strand, 7h is incubated at 535 DEG C, then in 100 DEG C of quenching-in water, at 180 DEG C
5h is incubated, heat-resisting aluminium alloy containing Mo-Be is obtained.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, stretching experiment is carried out under the conditions of 250 DEG C, at 250 DEG C
High-temperature instantaneous tensile strength is 266MPa.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, high temperature endurance performance test is carried out：
The tensile strength heated under the conditions of 200 DEG C 200 hours is 234MPa；The tension of heating 200 hours under the conditions of 250 DEG C
Intensity is 191MPa.
Embodiment 4
Heat-resisting aluminium alloy containing Mo-Be, its chemical composition is according to mass percent：Cu：6.3%, Mn：0.65%, Ni：
0.65%, Cr：0.35%, Be：0.3%, Mo：0.35%, V：0.25%, Ti：0.2%, B：0.012%, Ce：2.7%, La：
1.7%, surplus is Al and inevitable impurity.
The preparation method of the heat-resisting aluminium alloy containing Mo-Be, comprises the following steps：
Step 1, melting：
Aluminium chromium hardener is put into crucible, 925 DEG C are heated to, after it is completely melt, furnace temperature is dropped to 790 DEG C；
By the alloying component of setting, add in the middle of aluminum bronze intermediate alloy, aluminium manganese intermediate alloy, aluminium beryllium intermediate alloy, aluminium nickel
Alloy, aluminium molybdenum intermediate alloy, aluminium vanadium intermediate alloy, Al-Ti-B intermediate alloy, aluminium rare earth intermediate alloy and aluminium, more than 2/3 stove
After material dissolves, the smokeless coverture of HZ-WYF types is added, the amount for adding coverture is：Every square metre of crucible cross-sectional area is added
0.25kg, after after furnace charge all fusing, reduces the temperature to 725 DEG C and is incubated 18min；
After furnace temperature is stable, slag being taken off, adding the smokeless refining agent of HZ-WYJ types, the total amount for adding aluminium refining agent is：Often
Ton heat-resisting aluminium alloy containing Mo-Be adds 3kg, and skimming after 12min is incubated at 725 DEG C, refined metals liquation is obtained；Wherein aluminium is smart
Refining agent is added in two times, and first time intrusion is the 3/5 of aluminium refining agent gross mass, second of press-in surplus；
Step 2, cast：Casting mould is preheated to 250 DEG C, refined metals liquation is poured into strand；
Step 3, it is heat-treated：
Solid solution+Ageing Treatment is carried out to strand, 8h is incubated at 525 DEG C, then in 80 DEG C of quenching-in water, at 175 DEG C
6h is incubated, heat-resisting aluminium alloy containing Mo-Be is obtained.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, stretching experiment is carried out under the conditions of 250 DEG C, at 250 DEG C
High-temperature instantaneous tensile strength is 267MPa.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, high temperature endurance performance test is carried out：
The tensile strength heated under the conditions of 200 DEG C 200 hours is 234MPa；The tension of heating 200 hours under the conditions of 250 DEG C
Intensity is 189MPa.
Embodiment 5
Heat-resisting aluminium alloy containing Mo-Be, its chemical composition is according to mass percent：Cu：6.8%, Mn：0.6%, Ni：
0.5%, Cr：0.3%, Be：0.4%, Mo：0.35%, V：0.2%, Ti：0.15%, B：0.01%, Ce：2.5%, La：
1.7%, surplus is Al and inevitable impurity.
The preparation method of the heat-resisting aluminium alloy containing Mo-Be, comprises the following steps：
Step 1, melting：
Aluminium chromium hardener is put into crucible, 920 DEG C are heated to, after it is completely melt, furnace temperature is dropped to 780 DEG C；
By the alloying component of setting, add in the middle of aluminum bronze intermediate alloy, aluminium manganese intermediate alloy, aluminium beryllium intermediate alloy, aluminium nickel
Alloy, aluminium molybdenum intermediate alloy, aluminium vanadium intermediate alloy, Al-Ti-B intermediate alloy, aluminium rare earth intermediate alloy and aluminium, more than 2/3 stove
After material dissolves, the smokeless coverture of HZ-WYF types is added, the amount for adding coverture is：Every square metre of crucible cross-sectional area is added
0.25kg, after after furnace charge all fusing, reduces the temperature to 722 DEG C and is incubated 20min；
After furnace temperature is stable, slag being taken off, adding the smokeless refining agent of HZ-WYJ types, the total amount for adding aluminium refining agent is：Often
Ton heat-resisting aluminium alloy containing Mo-Be adds 3kg, and skimming after 15min is incubated at 725 DEG C, refined metals liquation is obtained；Wherein aluminium is smart
Refining agent is added in two times, and first time intrusion is the 2/3 of aluminium refining agent gross mass, second of press-in surplus；
Step 2, cast：Casting mould is preheated to 240 DEG C, refined metals liquation is poured into strand；
Step 3, it is heat-treated：
Solid solution+Ageing Treatment is carried out to strand, 9h is incubated at 525 DEG C, then in 80 DEG C of quenching-in water, at 170 DEG C
7h is incubated, heat-resisting aluminium alloy containing Mo-Be is obtained.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, stretching experiment is carried out under the conditions of 250 DEG C, at 250 DEG C
High-temperature instantaneous tensile strength is 267MPa.
By heat-resisting aluminium alloy containing Mo-Be manufactured in the present embodiment, high temperature endurance performance test is carried out：
The tensile strength heated under the conditions of 200 DEG C 200 hours is 235MPa；The tension of heating 200 hours under the conditions of 250 DEG C
Intensity is 191MPa.
Claims (2)
1. a kind of heat-resisting aluminium alloy containing Mo-Be, it is characterised in that the chemical composition of the alloy is according to mass percent：Cu：
6~7%, Mn：0.5~0.7%, Ni：0.5~0.7%, Cr：0.3~0.4%, Be：0.3~0.4%, Mo：0.3~0.4%,
V：0.2~0.3%, Ti：0.15~0.25%, B：0.01~0.015%, Ce：2.5~3%, La：1.5~2%, surplus is Al
With inevitable impurity；The alloy is 260~270MPa in 250 DEG C of high-temperature instantaneous tensile strength；The alloy is 200
The tensile strength heated under the conditions of DEG C 200 hours is 233~238MPa；The alloy is heated 200 hours under the conditions of 250 DEG C
Tensile strength is 187~195MPa.
2. the preparation method of the heat-resisting aluminium alloy containing Mo-Be described in a kind of claim 1, it is characterised in that comprise the following steps：
Step 1, melting：
Aluminium chromium hardener is put into crucible, 920~930 DEG C are heated to, after it is completely melt, furnace temperature is dropped to 780~800
℃；
By the alloying component of setting, add aluminum bronze intermediate alloy, aluminium manganese intermediate alloy, aluminium beryllium intermediate alloy, aluminium nickel intermediate alloy,
Aluminium molybdenum intermediate alloy, aluminium vanadium intermediate alloy, Al-Ti-B intermediate alloy, aluminium rare earth intermediate alloy and aluminium, more than 2/3 furnace charge dissolve
Afterwards, coverture is added, after after furnace charge all fusing, 720~730 DEG C is reduced the temperature to and is incubated 15~20min；Wherein, addition is covered
The composition quality content of lid agent is:Fluorite 35%, quartz sand 20%, Nacl 45%；Add coverture amount be：Every square metre
Crucible cross-sectional area adds 0.2~0.3kg；
After furnace temperature is stable, slag being taken off, being added after aluminium refining agent, skimming after 10~15min is incubated at 725~730 DEG C, is obtained
To refined metals liquation；Wherein aluminium refining agent is added in two times, and first time intrusion is the 3/5~2/3 of aluminium refining agent gross mass,
Second of press-in surplus；Wherein, it is that composition quality content is to add aluminium refining agent:Fluorite 25%, quartz sand 20%, Nacl
55%, add aluminium refining agent total amount be:Heat-resisting aluminium alloy containing Mo-Be per ton adds 1~3kg；
Step 2, cast：
Casting mould is preheated to 240~260 DEG C, refined metals liquation is poured into strand；
Step 3, it is heat-treated：
Solid solution+Ageing Treatment is carried out to strand, 7~9h is incubated at 525~535 DEG C, then in 60~100 DEG C of quenching-in water,
5~7h is incubated at 170~180 DEG C, heat-resisting aluminium alloy containing Mo-Be is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510859285.9A CN105441757B (en) | 2015-11-26 | 2015-11-26 | One kind heat-resisting aluminium alloys of Be containing Mo and preparation method thereof |
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| CN201510859285.9A CN105441757B (en) | 2015-11-26 | 2015-11-26 | One kind heat-resisting aluminium alloys of Be containing Mo and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105441757A CN105441757A (en) | 2016-03-30 |
| CN105441757B true CN105441757B (en) | 2017-07-11 |
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| CN106676347A (en) * | 2016-12-09 | 2017-05-17 | 安徽银龙泵阀股份有限公司 | Aluminum alloy with high coefficient of thermal expansion |
| CN108359856B (en) * | 2018-03-30 | 2019-11-19 | 辽宁工程技术大学 | One kind high strength heat resistant alloy containing Ni-Be-Mo and preparation method thereof |
| CN108559890B (en) * | 2018-03-30 | 2020-04-21 | 辽宁工程技术大学 | Ni-Be-containing high-strength heat-resistant aluminum alloy and preparation method thereof |
| CN109234590A (en) * | 2018-11-05 | 2019-01-18 | 贵州大学 | A kind of heat-resisting aluminium copper and preparation method thereof with high Fe and Si impurity content |
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| CN102021390A (en) * | 2009-09-17 | 2011-04-20 | 贵州华科铝材料工程技术研究有限公司 | Be-Mo-RE high-strength heat-resistant aluminum alloy material with C as modifier and preparation method thereof |
| EP2471968A1 (en) * | 2009-08-27 | 2012-07-04 | Guizhou Hua-ke Aluminum-Materials Engineering Research Co., Ltd. | Multi-element heat-resistant aluminum alloy material with high strength and preparation method thereof |
| CN103103382A (en) * | 2012-11-09 | 2013-05-15 | 安徽欣意电缆有限公司 | Al-Fe-Rh-RE aluminium alloy, preparation method thereof and power cable |
| CN104357714A (en) * | 2014-11-07 | 2015-02-18 | 辽宁工程技术大学 | Aluminum-silicon alloy and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2471968A1 (en) * | 2009-08-27 | 2012-07-04 | Guizhou Hua-ke Aluminum-Materials Engineering Research Co., Ltd. | Multi-element heat-resistant aluminum alloy material with high strength and preparation method thereof |
| CN102021390A (en) * | 2009-09-17 | 2011-04-20 | 贵州华科铝材料工程技术研究有限公司 | Be-Mo-RE high-strength heat-resistant aluminum alloy material with C as modifier and preparation method thereof |
| CN103103382A (en) * | 2012-11-09 | 2013-05-15 | 安徽欣意电缆有限公司 | Al-Fe-Rh-RE aluminium alloy, preparation method thereof and power cable |
| CN104357714A (en) * | 2014-11-07 | 2015-02-18 | 辽宁工程技术大学 | Aluminum-silicon alloy and preparation method thereof |
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