CN108893641A - A kind of Al alloy composite and preparation method thereof with self-lubricating - Google Patents

A kind of Al alloy composite and preparation method thereof with self-lubricating Download PDF

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CN108893641A
CN108893641A CN201810643219.1A CN201810643219A CN108893641A CN 108893641 A CN108893641 A CN 108893641A CN 201810643219 A CN201810643219 A CN 201810643219A CN 108893641 A CN108893641 A CN 108893641A
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reinforcement
alloy
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particle
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CN108893641B (en
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王泽�
李汶泽
李小平
卢雅琳
谈衡
杨晓红
徐修玲
雷卫宁
叶霞
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Jiangsu University of Technology
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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
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C22C1/1042—Alloys containing non-metals starting from a melt by atomising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/17—Metallic particles coated with metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • 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
    • C22C1/10—Alloys containing non-metals
    • C22C1/1005—Pretreatment of the non-metallic additives
    • C22C1/101—Pretreatment of the non-metallic additives by coating
    • 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
    • C22C1/10—Alloys containing non-metals
    • C22C1/1005—Pretreatment of the non-metallic additives
    • C22C1/1015—Pretreatment of the non-metallic additives by preparing or treating a non-metallic additive preform
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0089—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with other, not previously mentioned inorganic compounds as the main non-metallic constituent, e.g. sulfides, glass
    • 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

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  • Crystallography & Structural Chemistry (AREA)
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  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

The present invention provides a kind of Al alloy composite with self-lubricating, the composite material is made of substrate and precursor, the substrate is aluminium alloy, and the mass fraction of each element is Cu 3.8~4.9%, Mg 1.2~1.8%, Mn 0.30~0.90% in the aluminium alloy, remaining is Al.Presoma is that high-entropy alloy TiCoCrFeNiAl coats MoS2Particle, accounts for substrate mass percentage 30~40%, and partial size is 20~50 μm.

Description

A kind of Al alloy composite and preparation method thereof with self-lubricating
Technical field
The invention belongs to Material Fields, and in particular to a kind of Al alloy composite and manufacturing method with self-lubricating.
Background technique
More and more to resource requirement as social development population is growing, current land near surface resource has been opened It adopts excessively, resource must be found to Earth to meet social development demand.When drilling well is constantly deepened, not connection breaking is needed Drilling rod is continuously increased to extend drill string its self weight, and it is highly difficult that the probing of deep-well and ultradeep well is only completed by developing big specification drilling machine , especially when drilling well is more than a certain depth, drill string makes drilling rod that timeliness destruction occur from Beijing South Maxpower Technology Co. Ltd, in addition there is also barefoot intervals It grows, borehole wall stability is poor, the bad working environments such as environment temperature height in well.Therefore, aluminium drill pipe is gradually instead of drill steel, Since aluminium alloy is light-weight, corrosion resistance is strong, specific strength is high, the low advantage of energy consumption, especially in horizontal well, scientific ultradeep well, big Displacement well, Earth probing tool have great advantage.Drilling rod motion morphology in drilling process has whirling motion and vibration, the mill of drilling rod Damage includes three aspects：(1) whirling motion makes drilling rod generate strong oscillation crosswise, accelerates to wear between drilling rod and casing.(2) naked Eye well section, periodically vibration is generated when drill bit broken rock, and drilling rod and the borehole wall constantly collide and cause galled spots and abrasion. (3) shaft bottom ground temperature is up to 300 DEG C, and pressure is up to 200MPa.High temperature and pressure, which acts on lower drilling rod wear-resistant, to decay, and occur serious Wear and thinning phenomenon reduces its bearing capacity and increases accident potential.Therefore, in order to solve, aluminum alloy material surface matter is soft, wearability The weakness such as difference need to carry out the Tribological Modification processing of aluminium and aluminium alloy.
The currently known aluminum matrix composite main preparation methods with self-lubricating prepare hard in aluminum alloy surface Anode oxide film then fills various lubricating substances in the micropore on pellumina surface, has aluminium material surface good Wearability and good self-lubrication.It finds by prior art documents, Chinese patent notification number is: CN106733554U, the day for announcing be：2017.05.31 entitled:A kind of self-lubricating wear-resistant coating of aluminum alloy surface Preparation method, in such a way that the surface of aluminium alloy provides ceramic intermediate buffer layer and surface self-lubricating layer, can successively make Improve the durability of wearing layer in the surface that high molecular self-lubricating slip layer is attached to alloy.This method disadvantage is that lubricant layer is macromolecule The materials'use service life is short, is not able to satisfy the requirement of drilling rod.Chinese patent notification number is:CN 106835233A, the day for announcing be 2017.06.13 entitled:Wear-resisting, etch-proof aluminium drill pipe preparation method and aluminium drill pipe obtained, the hair Bright to obtain wear-resisting, etch-proof aluminium drill pipe using galvanoplastic, disadvantage is that surface abrasion resistance erosion resistant coating only has 40~60 μm, makes And electrolytic cell waste liquid short with the service life has larger pollution to environment.
Summary of the invention
The present invention, from aluminum alloy materials essence is improved, using aluminium alloy as substrate, is incited somebody to action for disadvantage mentioned above TiCoCrFeNiAl coats MoS2Particle is added in aluminium alloy, is had using jet deposition increasing material manufacturing and hot extrusion technique preparation The drilling rod aluminum matrix composite of self-lubricating.Added high-entropy alloy has high rigidity, high intensity, wear-resisting, corrosion-resistant, high temperature Interfacial wettability and interface compatibility between thermal stability, with alloy matrix aluminum is good.The MoS of cladding2Particle has good again Self-lubrication.Therefore, drilling rod aluminum matrix composite prepared by the present invention not only has excellent wearability and self-lubrication, and And the small long service life of coefficient of friction.
It is of the invention the technical problem to be solved is that overcoming the deficiencies of existing technologies, pass through and change aluminum alloy materials essence Improve its self-lubrication.The present invention provides a kind of drilling rod aluminum matrix composite and increasing material manufacturing method with self-lubricating.
Realize that technical problem of the invention is adopted the technical scheme that：Firstly, preparing presoma using spray deposition TiCoCrFeNiAl coats MoS2Particle.Secondly, using aluminium alloy as substrate, under high pressure argon gas effect by substrate metal liquid and The synchronous spray deposition of presoma obtains aluminum matrix composite slab on substrate.Then slab is carried out at hot extrusion densification Reason, is squeezed into tubing.Second level solid-solution and aging heat treatment finally is carried out to get the drilling rod aluminium with self-lubricating to tubing
The present invention provides a kind of Al alloy composite with self-lubricating, and the composite material is by substrate and reinforcement group At the substrate is aluminium alloy, and the reinforcement is that TiCoCrFeNiAl coats MoS2Particle.
Preferred reinforcement of the present invention accounts for the 30~40% of substrate mass percentage.
The partial size of preferred reinforcement of the present invention is 20~50 μm.
In preferred aluminium alloy of the present invention the mass fraction of each element be Cu 3.8~4.9%, Mg 1.2~ 1.8%, 0.30~0.90% Mn, remaining is Al.
The present invention also provides the preparation methods of the composite material, and this approach includes the following steps：
1) reinforcement is prepared：Ti, Co, Cr, Fe, Ni, Al metal are subjected to configuration raw material according to atomic ratio, are placed in crucible Smelting furnace is heated to melting, and melt is then filled into the molten metal packet in jet deposition machine, while being 10 μm by partial size MoS2 is filled into solids fluidized conveyer, high-entropy alloy and MoS2Mass ratio 6：4, respectively to molten metal packet and solids fluidized defeated Send the high pressure argon gas for being passed through 0.7~0.85MPa in device by high-entropy alloy molten metal and MoS2It is mixed that the synchronous atomization of particle forms solid-liquid The drop of conjunction, drop quickly solidifies under the effect of spray chamber lower end cooler, is deposited on acquisition reinforcement particle on substrate, deposition 700~900mm of distance；
2) substrate is prepared：Al, Cu, Mn, Mg metal block are carried out to be added to crucible with substrate material is made by mass fraction Smelting furnace fusing, obtains aluminium alloy liquid；
3) slab is prepared：The reinforcement particle that will be obtained in step 1), ultrasonic vibration, which is sufficiently stirred, is filled into jet deposition In the solid particle fluidisation conveyer of equipment；The aluminium alloy liquid that step 2) obtains is injected into molten metal packet；To conveyer It is passed through air pressure simultaneously with molten metal packet to be 0.7~0.85Mpa argon gas for aluminum alloy melt and reinforcement while being atomized, is deposited on substrate Upper acquisition slab；
4) extrusion forming：The slab that step 3) obtains is put into heat extruder and is preheated to 450~500 DEG C, keeps the temperature 30min It afterwards, is 520 DEG C in temperature, extrusion ratio is 20~30, and extrusion speed is hot extrusion molding under conditions of 1~3mm/s, obtains extruded tube Material；
5) solid solution, ageing treatment：The extruding tubing that step 4) is obtained carries out first order solution treatment, solid solubility temperature 470 ± 5 DEG C, soaking time 2h；Second level solution treatment is carried out again, and 490 ± 5 DEG C of solid solubility temperature, soaking time 1h, room temperature water cooling turns Shift time≤12s；Tubing progress artificial aging processing after the solution treatment of the second level, 190 ± 5 DEG C of aging temp, soaking time 12h。
The present invention provides application of the composite material in preparation self-lubricating drilling rod.
The beneficial effects of the invention are as follows：
The present invention is added to high rigidity, high intensity, wear-resisting, corrosion-resistant, high high-temp stability in aluminum alloy base material High-entropy alloy, and the anti-MoS with self-lubricating2, the tiny knot of tissue of ingredient even grained is obtained using spray deposition Structure, organizes finer and close after hot extrusion, so that material essence improves its wearability and self-lubrication, overcomes public affairs Know the major defect that patent self-lubricating layer is thin, service life is short, waste liquor contamination is big, provide a kind of simple process, it is easy to operate, Material loss is few and can drilling rod aluminum matrix composite and preparation method of the large-scale production with self-lubricating.
Detailed description of the invention
Fig. 1：The drilling rod of self-lubricating of the present invention aluminum matrix composite preparation technology flow chart；
Fig. 2：Solid-liquid of the invention synchronizes same position atomising device operation principle schematic diagram；In figure：1- solid particle, 2- metal Liquid, 3- solid particle fluidize conveyer, 4- molten metal packet, and 5- closes valve, 6- sealing-plug, 7- atomizer, 8- cooler
Specific embodiment
Below with reference to example is applied, the present invention will be further described in detail, but the present invention is not restricted to following embodiment.
Embodiment 1：A kind of drilling rod aluminum matrix composite and increasing material manufacturing method with self-lubricating, specific steps are such as Under：
1) reinforcement is prepared：Ti, Co, Cr, Fe, Ni, Al metal are subjected to configuration raw material according to atomic ratio, are placed in crucible Smelting furnace is heated to melting, and melt is then filled into the molten metal packet in jet deposition machine, while being 10 μm by partial size MoS2It is filled into solids fluidized conveyer, high-entropy alloy and MoS2Mass ratio 6：4, respectively to molten metal packet and solids fluidized defeated Send the high pressure argon gas for being passed through 0.85MPa in device by high-entropy alloy molten metal and MoS2The synchronous atomization of particle forms the liquid of solid-liquid mixing Drop, drop quickly solidifies under the effect of spray chamber lower end cooler, is deposited on acquisition reinforcement particle, deposited distance on substrate 900mm；
2) substrate is prepared：Al, Cu, Mn, Mg metal block are carried out to be added to crucible with substrate material is made by mass fraction Smelting furnace fusing, obtains aluminium alloy liquid；
3) slab is prepared：The reinforcement particle that will be obtained in step 1), ultrasonic vibration are sufficiently stirred plus according to substrate mass 30% note of percentage is into the solid particle fluidisation conveyer of jet deposition equipment；The aluminium alloy liquid injection that step 2) is obtained Into molten metal packet；Being passed through air pressure simultaneously to conveyer and molten metal packet is that 0.85Mpa argon gas is same by aluminum alloy melt and reinforcement When be atomized, be deposited on substrate and obtain slab；
4) extrusion forming：The slab that step 3) obtains is put into heat extruder and is preheated to 500 DEG C, after keeping the temperature 30min, Temperature is 520 DEG C, and extrusion ratio 30, extrusion speed is hot extrusion molding under conditions of 3mm/s, obtains extruding tubing；
5) solid solution, ageing treatment：The extruding tubing that step 4) is obtained carries out first order solution treatment, solid solubility temperature 470 ± 5 DEG C, soaking time 2h；Second level solution treatment is carried out again, and 490 ± 5 DEG C of solid solubility temperature, soaking time 1h, room temperature water cooling turns Shift time≤12s；Tubing progress artificial aging processing after the solution treatment of the second level, 190 ± 5 DEG C of aging temp, soaking time 12h。
Through detecting, what the present embodiment obtained has self-lubricating drilling rod aluminum matrix composite, even tissue, presoma disperse Distribution, crystal grain is tiny, and wear-resisting property and coefficient of friction are small.
Embodiment 2：A kind of drilling rod aluminum matrix composite and increasing material manufacturing method with self-lubricating, specific steps are such as Under：
1) reinforcement is prepared：Ti, Co, Cr, Fe, Ni, Al metal are subjected to configuration raw material according to atomic ratio, are placed in crucible Smelting furnace is heated to melting, and melt is then filled into the molten metal packet in jet deposition machine, while being 10 μm by partial size MoS2It is filled into solids fluidized conveyer, high-entropy alloy and MoS2Mass ratio 6：4, respectively to molten metal packet and solids fluidized defeated Send the high pressure argon gas for being passed through 0.7MPa in device by high-entropy alloy molten metal and MoS2The synchronous atomization of particle forms the liquid of solid-liquid mixing Drop, drop quickly solidifies under the effect of spray chamber lower end cooler, is deposited on acquisition reinforcement particle, deposited distance on substrate 700mm；
2) substrate is prepared：Al, Cu, Mn, Mg metal block are carried out to be added to crucible with substrate material is made by mass fraction Smelting furnace fusing, obtains aluminium alloy liquid；
3) slab is prepared：The reinforcement particle that will be obtained in step 1), ultrasonic vibration are sufficiently stirred plus according to substrate mass 35% note of percentage is into the solid particle fluidisation conveyer of jet deposition equipment；The aluminium alloy liquid injection that step 2) is obtained Into molten metal packet；Being passed through air pressure simultaneously to conveyer and molten metal packet is 0.7Mpa argon gas by aluminum alloy melt and reinforcement simultaneously Atomization, is deposited on substrate and obtains slab；
4) extrusion forming：The slab that step 3) obtains is put into heat extruder and is preheated to 450 DEG C, after keeping the temperature 30min, Temperature is 520 DEG C, and extrusion ratio 20, extrusion speed is hot extrusion molding under conditions of 1mm/s, obtains extruding tubing；
5) solid solution, ageing treatment：The extruding tubing that step 4) is obtained carries out first order solution treatment, solid solubility temperature 470 ± 5 DEG C, soaking time 2h；Second level solution treatment is carried out again, and 490 ± 5 DEG C of solid solubility temperature, soaking time 1h, room temperature water cooling turns Shift time≤12s；Tubing progress artificial aging processing after the solution treatment of the second level, 190 ± 5 DEG C of aging temp, soaking time 12h。
Through detecting, what the present embodiment obtained has self-lubricating drilling rod aluminum matrix composite, even tissue, presoma disperse Distribution, crystal grain is tiny, and wear-resisting property and coefficient of friction are small.
Embodiment 3：A kind of drilling rod aluminum matrix composite and increasing material manufacturing method with self-lubricating, specific steps are such as Under：
1) reinforcement is prepared：Ti, Co, Cr, Fe, Ni, Al metal are subjected to configuration raw material according to atomic ratio, are placed in crucible Smelting furnace is heated to melting, and melt is then filled into the molten metal packet in jet deposition machine, while being 10 μm by partial size MoS2It is filled into solids fluidized conveyer, high-entropy alloy and MoS2Mass ratio 6：4, respectively to molten metal packet and solids fluidized defeated Send the high pressure argon gas for being passed through 0.8MPa in device by high-entropy alloy molten metal and MoS2The synchronous atomization of particle forms the liquid of solid-liquid mixing Drop, drop quickly solidifies under the effect of spray chamber lower end cooler, is deposited on acquisition reinforcement particle, deposited distance on substrate 800mm；
2) substrate is prepared：Al, Cu, Mn, Mg metal block are carried out to be added to crucible with substrate material is made by mass fraction Smelting furnace fusing, obtains aluminium alloy liquid；
3) slab is prepared：The reinforcement particle that will be obtained in step 1), ultrasonic vibration are sufficiently stirred plus according to substrate mass 40% note of percentage is into the solid particle fluidisation conveyer of jet deposition equipment；The aluminium alloy liquid injection that step 2) is obtained Into molten metal packet；Being passed through air pressure simultaneously to conveyer and molten metal packet is 0.8Mpa argon gas by aluminum alloy melt and reinforcement simultaneously Atomization, is deposited on substrate and obtains slab；
4) extrusion forming：The slab that step 3) obtains is put into heat extruder and is preheated to 480 DEG C, after keeping the temperature 30min, Temperature is 520 DEG C, and extrusion ratio 25, extrusion speed is hot extrusion molding under conditions of 2mm/s, obtains extruding tubing；
5) solid solution, ageing treatment：The extruding tubing that step 4) is obtained carries out first order solution treatment, solid solubility temperature 470 ± 5 DEG C, soaking time 2h；Second level solution treatment is carried out again, and 490 ± 5 DEG C of solid solubility temperature, soaking time 1h, room temperature water cooling turns Shift time≤12s；Tubing progress artificial aging processing after the solution treatment of the second level, 190 ± 5 DEG C of aging temp, soaking time 12h。
Through detecting, what the present embodiment obtained has self-lubricating drilling rod aluminum matrix composite, even tissue, presoma disperse Distribution, crystal grain is tiny, and wear-resisting property and coefficient of friction are small.
Comparative example 1：Set-up procedure 1) in high-entropy alloy and MoS2Mass ratio 6：3, remaining step is made with embodiment 1 1 composite material of comparative example.
Through detecting, what this comparative example obtained has self-lubricating drilling rod aluminum matrix composite, nonuniform organization, presoma group Poly-, coarse grains, wear-resisting property is low and coefficient of friction is high.
Comparative example 2：Set-up procedure 1) in high-entropy alloy and MoS2Mass ratio 6：5, remaining step is made with embodiment 1 2 composite material of comparative example.
Through detecting, what this comparative example obtained has self-lubricating drilling rod aluminum matrix composite, nonuniform organization, presoma group Poly-, coarse grains, wear-resisting property is low and coefficient of friction is high.
Comparative example 3：Set-up procedure 3) in reinforcement to account for substrate mass percentage be 45%, remaining step with embodiment 1, 3 composite material of comparative example is made.
Through detecting, what this comparative example obtained has self-lubricating drilling rod aluminum matrix composite, although wearability height friction system Counting small but preparation slab has micro-crack generation through extrusion forming rear surface.
Comparative example 4：Set-up procedure 3) in reinforcement to account for substrate mass percentage be 25%, remaining step with embodiment 1, 4 composite material of comparative example is made.
Through detecting, what this comparative example obtained has self-lubricating drilling rod aluminum matrix composite, although wearability height friction system Count slab strength reduction after extrusion forming tubing that is small and preparing.
Test example：High temperature friction and wear testing machine, friction pair part Φ are moved by using MMQ-02G ball disk rotary 6mm Ceramic Balls, material SiO2, hardness 880HV.Fraction time is 30min, and revolving speed is set as 500r/min, load is set as 15N. Frictional behaviour test is carried out to the aluminum matrix composite of above-described embodiment 1-3, as a result see the table below：
Embodiment Abrasion loss Average friction coefficient
Embodiment 1 1.1mg 0.11
Embodiment 2 1.0mg 0.07
Embodiment 3 0.9mg 0.05
Comparative example 1 5.5mg 0.76
Comparative example 2 5.7mg 0.78
Comparative example 3 0.88mg 0.05
Comparative example 4 1.5mg 0.14
The drilling rod aluminum matrix composite with self-lubricating prepared by above-mentioned 3 kinds of embodiment methods and many experiments And increasing material manufacturing method, it is added in aluminum alloy base material with high rigidity, high intensity, wear-resisting, corrosion-resistant, high high-temp stability High-entropy alloy coat MoS2Particle, the tiny institutional framework of ingredient even grained is obtained using spray deposition, through overheating It organizes finer and close after extrusion process, so that material essence improves its wearability and corrosion resistance, overcomes known corrosion-resistant Aluminum matrix composite surface abrasion resistance and thin, the heavy-polluted major defect of electroplate liquid with self-lubricating layer, provide a kind of technique It is simple and convenient to operate, material loss is few and can drilling rod aluminum matrix composite and preparation side of the large-scale production with self-lubricating Method.
Embodiment 1 and comparative example 1-4 are it was found that only high-entropy alloy and MoS2Mass ratio 6：4, reinforcement accounts for substrate matter The composite material that amount percentage is prepared when being 30-50% improves its wearability and corrosion resistance, overcomes known corrosion-resisting aluminium Based composites surface abrasion resistance and have self-lubricating layer it is thin.Reinforcement accounts for substrate mass percentage and high-entropy alloy and MoS2 Small change, which occurs, all can generate large effect to the performance of composite material.
Particular embodiments described above, to the purpose of the present invention, technical scheme and beneficial effects carried out into One step is described in detail, it should be understood that the above is only a specific embodiment of the present invention, is not limited to this hair Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention Protection scope within.

Claims (6)

1. a kind of Al alloy composite with self-lubricating, which is characterized in that the composite material is made of substrate and reinforcement, The substrate is aluminium alloy, and the reinforcement is that high-entropy alloy TiCoCrFeNiAl coats MoS2Particle.
2. composite material according to claim 1, which is characterized in that the reinforcement account for substrate mass percentage 30~ 40%.
3. composite material according to claim 1, which is characterized in that the partial size of the reinforcement is 20~50 μm.
4. composite material according to claim 1, which is characterized in that the mass fraction of each element is in the aluminium alloy Cu 3.8~4.9%, Mg 1.2~1.8%, Mn 0.30~0.90%, remaining is Al.
5. the preparation method of composite material according to claim 1-4, which is characterized in that this method includes following Step：
1) reinforcement is prepared：Ti, Co, Cr, Fe, Ni, Al metal are subjected to configuration raw material according to atomic ratio, are placed in crucible for smelting Then melt is filled into the molten metal packet in jet deposition machine, while the MoS for being 10 μm by partial size to melting by stove heating2Add It infuses in solids fluidized conveyer, high-entropy alloy and MoS2Mass ratio 6：4, respectively into molten metal packet and solids fluidized conveyer The high pressure argon gas of 0.7~0.85MPa is passed through by high-entropy alloy molten metal and MoS2The synchronous atomization of particle forms the liquid of solid-liquid mixing Drop, drop quickly solidifies under the effect of spray chamber lower end cooler, is deposited on acquisition reinforcement particle, deposited distance on substrate 700~900mm；
2) substrate is prepared：Al, Cu, Mn, Mg metal block are carried out to be added to crucible for smelting with substrate material is made by mass fraction Furnace fusing, obtains aluminium alloy liquid；
3) slab is prepared：The reinforcement particle that will be obtained in step 1), ultrasonic vibration, which is sufficiently stirred, is filled into jet deposition equipment Solid particle fluidisation conveyer in；The aluminium alloy liquid that step 2) obtains is injected into molten metal packet；To conveyer and gold Belong to liquid packet while being passed through air pressure and be 0.7~0.85Mpa argon gas for aluminum alloy melt and reinforcement while being atomized, is deposited on substrate and obtains Obtain slab；
4) extrusion forming：The slab that step 3) obtains is put into heat extruder and is preheated to 450~500 DEG C, after keeping the temperature 30min, It is 520 DEG C in temperature, extrusion ratio is 20~30, and extrusion speed is hot extrusion molding under conditions of 1~3mm/s, obtains extruding tubing；
5) solid solution, ageing treatment：The extruding tubing that step 4) is obtained carries out first order solution treatment, solid solubility temperature 470 ± 5 DEG C, soaking time 2h；Second level solution treatment is carried out again, and 490 ± 5 DEG C of solid solubility temperature, soaking time 1h, room temperature water cooling shifts Time≤12s；Tubing progress artificial aging processing after the solution treatment of the second level, 190 ± 5 DEG C of aging temp, soaking time 12h。
6. application of the composite material according to claim 1-4 in preparation self-lubricating drilling rod.
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CN111575699A (en) * 2020-06-10 2020-08-25 西安建筑科技大学 Self-lubricating aluminum-based composite material and preparation method thereof
CN112191851A (en) * 2020-09-14 2021-01-08 江苏海洋大学 High-entropy alloy reinforced aluminum-based composite material and preparation method thereof

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CN109897997A (en) * 2019-04-03 2019-06-18 北京科技大学 One kind two-phase of al-mg-si containing lithium enhancing eutectic lightweight medium entropy alloy and preparation method thereof
CN111394667A (en) * 2020-03-25 2020-07-10 江苏大学 Regulation (FeCoNiCrAlCu)pMethod for interface of/2024A 1 composite material
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