CN102634746A - Manufacturing method for enhanced type aluminum, titanium and carbon alloy wire - Google Patents
Manufacturing method for enhanced type aluminum, titanium and carbon alloy wire Download PDFInfo
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Abstract
The invention relates to a manufacturing method for an enhanced type aluminum, titanium and carbon alloy wire. The manufacturing method comprises the following steps of: (1) adding a TiC enhancer into an aluminum flux and fully mixing; (2) increasing the temperature of the aluminum flux to 1100-1400 DEG C and keeping for 2-5 hours; (3) atomizing a product obtained in the step (2), and then directly curing; and (4) performing repeated cold-drawing annealing on a cured product, thereby directly forming the enhanced type aluminum, titanium and carbon alloy wire. The manufacturing method provided by the invention has the advantages that the use ratio of the enhancer is high, the effect of refining tissues is excellent and stable, the fineness of the manufactured aluminum, titanium and carbon alloy wire is high, the mechanical property is excellent and the manufacturing process is simple and controllable.
Description
Technical field
The present invention relates to a kind of method of manufacture of aluminium alloy wires, particularly a kind of method of manufacture of enhancement type aluminium titanium carbon alloy wire rod.
Background technology
Duraluminum is one type of non-ferrous metal structured material the most widely in the industrial application, in Aeronautics and Astronautics, boats and ships, automobile, machinofacture and chemical industry, all is widely used.The density of fine aluminium is little, fusing point is low, is face-centred cubic structure, so plasticity-is high, is easy to be processed into various section bars; But the intensity of fine aluminium is low, and mechanical property is not high, thereby should not be as the structured material that bears big load.People come reinforced aluminum, the reason of various duraluminums generations that Here it is through secular scientific experimentation and production practice through adding methods such as alloying element and utilization thermal treatment.The duraluminum that has added certain element and formed has possessed higher intensity in advantages such as the original light weight of maintenance aluminium; Thereby obtained good specific tenacity (ratio of intensity and proportion); Near in addition surpassed steel alloy; Have advantages such as plasticity is good in addition, and often become the preferred material of the aviation field such as fuselage, covering of aircraft.It is thus clear that obtaining HS is the key factor that strengthens aluminum alloy materials use value.Common duraluminum enhancement method mainly contains following several kinds: 1. solution strengthening: alloying element is added formation unlimited solid solution or limit solid solution in the fine aluminium, can not only obtain high intensity, and can also obtain good plasticity and good pressure machining characteristics.The most frequently used alloying element of solution strengthening is elements such as copper, magnesium, manganese, zinc, silicon, nickel in general duraluminum.The alloying of general aluminium all forms limited sosoloid, like Al-Cu, and Al-Mg, Al-Zn, Al-Si, binary alloys such as Al-Mn all form limit solid solution, and all have bigger limit of solubility can play bigger solid solution strengthening effect.2. cold deformation strengthening: peening is also claimed in cold deformation strengthening, and promptly metallic substance is in the following cold deformation of recrystallization temperature, and during cold deformation, the metal inside dislocation desity increases, and tangles each other and form cell structure, hinders dislocation motion.The big more dislocation tangling of degree of deformation is serious more, and resistance to deformation is big more, and intensity is high more.The degree of strengthening after the cold deformation is difference with the character of degree of deformation, texturing temperature and material itself.During cold deformation, degree of deformation more greatly then intensity is high more under same temperature for same material.Plasticity reduces with the increase of distortion degree.3. thinning microstructure is strengthened: in duraluminum, adding micro-thinning microstructure is the another kind of important means that improves Mechanical Properties of Aluminum Alloys.Add trace amount of titanium, zirconium, beryllium, strontium and REE in the wrought aluminium alloy, they can form infusible compound, when the alloy crystallization, as non-spontaneous nucleation, play the crystal grain thinning effect, improve the intensity and the plasticity of alloy.The normal trace element that adds is made the rotten refinement alloy structure of handling in the y alloy y, improves intensity and plasticity.The rotten processing can not heat treatment reinforcement or the little y alloy y of strengthening effect and wrought aluminium alloy meaning with particularly important.Such as in aluminium silicon y alloy y, adding Trace Sodium or sodium salt or antimony do the alterant processing of going bad, thinning microstructure can significantly improve plasticity and intensity.The same plate-like or spiculation compound AlFeSi refinement that elements such as a small amount of manganese of adding, chromium, cobalt can make impurity iron form in y alloy y improves plasticity, adds micro strontium can eliminate or reduce primary silicon, and makes the Eutectic Silicon in Al-Si Cast Alloys refinement; The particle roundness improves.4. surplus is strengthened mutually: when the alloying element water cut that adds in the aluminium surpassed its limit of solubility, just some can not dissolve in second of sosoloid and occurs being referred to as superfluous phase mutually when quenching heating.Mostly superfluous in duraluminum is hard and crisp intermetallic compound mutually.They work to hinder slippage and dislocation motion in alloy, intensity, hardness are improved, and plasticity, toughness reduction.In the alloy quantity of superfluous phase the more, its strengthening effect better, but superfluous mutually for a long time cause intensity, plasticity reduction because alloy becomes fragile.5. ageing strengthening: aluminum alloy heat can obtain oversaturated aluminium base sosoloid after handling.The aluminium base sosoloid of this supersaturation is in room temperature or when being heated to a certain temperature, and its intensity and hardness increase with prolongation in time, but plasticity reduces.This process is just claimed timeliness.Make the intensity of alloy, the phenomenon that hardness increases be called ageing strengthening or age hardening in the ag(e)ing process.
Prove at present, in duraluminum, add particularly TiB of trace element
2And/or the TiC particulate to come thinning microstructure be the very effective means that improves Mechanical Properties of Aluminum Alloys, Cibula has just found TiB as far back as the forties in last century
2And TiC is effective forming core core of aluminium, from that time, just never is interrupted about the research of aluminium-titanium-boron and aluminium-titanium-carbon, and particularly aluminium-titanium-boron alloy has been realized industrialization, is widely used in the thinning processing of aluminium and duraluminum in the aviation field and cheap.Traditional method is with TiB before casting
2And/or TiC adds formation Ti-6Al-4V foundry goods in the melts, TiB to
2And/or TiC dissolves in melts; Recrystallize forms the discontinuity with various different sizes and strengthens body in process of cooling again; (hotisostatic pressing HIP) forms product with extrusion molding, and the TiB that is added is depended in the raising of product mechanical property by hot isostatic pressing again
2And/or the concentration of TiC, the discontinuity that produces strengthen the quantity and the size thereof of body.The dimensional change of the enhancing body that preceding method obtained is in extensive range; And owing in casting or manufacturing processed, have the tendency that big crystal grain is removed less crystal grain; When the TV content that strengthens body when the scope level of desired 20%-40% increases; The volume that strengthens body also changes to large-size, and this obviously can not satisfy the size that strengthens body should this requirement in the scope of ultra-fine size, though thereby the enhancing body that has formed large-size can not really bring into play " enhancings " and act on.
CN 101068945A discloses a kind of method of making the enhancement type titanium alloy wire, and it mainly is from the melts that is rich in boron, to form the titanium alloy powder through gas atomization; At about 5000-45000psi for example under the pressure of 15000psi; Under the temperature of about 1650-1750 ° F, use hot isostatic pressing that said powder metal is solidified into the bar shape, up to completely solidified; Change under the required condition but remain on β, to avoid grain growing and boundary segregation; When temperature is approximately 1500-2100 ° of F, 1750 ° of F for example, hot rolling to be reducing into said bar web shape or coiled material shape, and accomplishes the initial decomposition of big TiB crystal grain; With the approximately cold drawn and annealing of economy of every time 10%-20%.This method is not considered the problem of the gentle property difference between carbon and the aluminium, and is therefore little for the research contribution of aluminium-titanium-carbon alloy.
The gentle property of extreme difference is restricting the progress of aluminium-titanium-carbon alloy always between carbon and the aluminium, has just prepared the TiC particle that contains capacity and thinning effect aluminium-titanium-carbon alloy preferably until scholars such as Banerji in 1985 and Reif.Traditional method usually adopts the metallurgical compound method that in aluminium liquid, adds villiaumite and carbon dust or titanium, carbon dust, but because the forming core particle TiC in the aluminium-titanium-carbon alloy is unstable, and easy and aluminium reacts and forms Al in molten aluminium
4C
3, promptly so-called " autointoxication " phenomenon, so the very unstable decline of thinning effect is exceedingly fast, and also has shortcomings such as technical process length, production cost height simultaneously.CN 1144886C discloses solidifying of a kind of aluminium-titanium-carbon alloy wire and manufacturing process, mainly comprises following process step: villiaumite is fluxed and is handled and the graphite activation treatment, in villiaumite, adds quantitative fusing assistant graphite is carried out machinery and thermal activation; Solid-liquid reaction: under little agitation condition, Ti, C source material are added in the superheated molten aluminium, carry out solid-liquid reaction to carbon and all exhaust; Refining and dispersion to carrying out refining and degassing processing behind the melt desalination, continue stirring with impeller TiC and TiAl3 particle are further disperseed, and stirring velocity is 400-700rpm; Melt activates to be handled, and melt temperature is risen to 1000-1300 ℃, carries out the processing of activity stabilizedization of refinement; Melt continuous casting and extrusion process simulation, image data, the simulation casting pushes through the Cheng Youhua processing parameter; The moulding of wire rod continuous casting and extrusion, by optimized parameters, melt temperature 700-850 ℃, it is 6-10m/min that speed is squeezed in casting, cooling water flow 0.5-0.7/m
3/ n becomes the certain specification wire rod with alloy melt continuous casting and extrusion on multi-functional casting and extruding machine.Preceding method structure of fibrous tissue in wire rod continuous casting and extrusion moulding process is difficult for keeping, and section is prone to form fracture, crackle and cavity, and wire rod fragility increases.
CN 100575521C discloses a kind of aluminium-titanium-carbon-boron-nitrogen master alloy that is used for refinement aluminium and duraluminum and preparation method thereof; The mass percent of each component is aluminium 89.00%-97.00% in this alloy, titanium 1.00%-10.00%, carbon 0.02%-1.00%; Boron 0.02%-1.00%; Nitrogen 0.01%-0.20%, its preparation method may further comprise the steps: (1) is according to aluminium-carbon binary master alloy of following mass percent preparation raw material: 1.00%-10.00%, the aluminium of 1.00%-20.00%-boron binary master alloy; The pure titanium of 1.00%-10.00%, surplus is fine aluminium and high pure nitrogen; The quality percentage composition of carbon is 1.00%-10.00% in wherein used aluminium-carbon binary master alloy, and the percentage composition of boron is 1.00%-5.00% in used aluminium-boron binary master alloy; The pure titanium that (2) will weigh up places vacuum sintering furnace, and sealing vacuumizes, and is blown into nitrogen, through its flow of under meter control, is warming up to 700-900 ℃, and nitriding was handled after 0.5-15 hour under nitrogen atmosphere, took out subsequent use; (3) place intermediate frequency furnace to be melted up to 1000-1300 ℃ together the fine aluminium for preparing, aluminium-boron, aluminium-carbon binary master alloy, add the titanium that nitriding was handled, be incubated also after mechanical stirring 2-30 minute casting ingot-forming or process wire rod.Its feed composition relative complex and high to the content requirement of different components includes unsettled binary master alloy again in the raw material, so the technological process relative complex, and is wayward; The method for preparing wire rod simultaneously is comparatively coarse, therefore also has the shortcoming of wire rod cross section easy fracture.
Summary of the invention
The objective of the invention is to deficiency to prior art; A kind of method of manufacture of enhancement type aluminium titanium carbon alloy wire rod is provided, and this method is to strengthen body with TiC, and is high for the utilization ratio that strengthens body; For the good in refining effect of organizing and stable; The aluminium titanium carbon alloy wire rod fineness that produces is high, and mechanical property is excellent, and manufacturing processed is simple and easy to control.
For reaching this purpose, the present invention adopts following technical scheme:
1. TiC is strengthened body and join in the molten aluminium, fully stir, make its homodisperse.
2. rising molten aluminium temperature is to 1100-1400 ℃ and kept 2-5 hour.This step has strengthened TiC and has strengthened the gentle property between body and the aluminium, makes TiC strengthen body and further disperses, and can guarantee to produce uniform microstructure; Simultaneously owing under comparatively high temps, kept the long period; Even strengthening the adding of body, is on the increase TiC; It also can finally be dispersed in the tissue and keep relative stability; Thereby can add more TiC enhancing body, and realized strengthening the raising of body burden, the content that strengthens body improves nature and can improve its reinforced effects.
3. step 2 products therefrom atomizing back is directly solidified.Atomizing can be avoided the gathering of crystal grain, has guaranteed that the uniform microstructure that has obtained promptly is not destroyed by the weave construction of refinement; Directly curing has also avoided the gathering growth of crystal grain to separate with possible chemofacies, thereby has guaranteed that the weave construction of refinement settles out with solid-state form.
4. cured product is directly formed enhancement type aluminium titanium carbon alloy wire rod through cold drawn annealing repeatedly.Cured product is without hot rolling, and the inhomogeneous and organization internal non-metallic inclusion of the weave construction that can avoid hot rolling to cause is pressed into the interlayer phenomenon that thin slice causes because of hot rolling; The unrelieved stress that inhomogeneous cooling causes is eliminated in the repeatedly cold drawn accurately contraction of control section, thereby has greatly reduced the generation of section crack with the cavity, and wire rod fragility obviously reduces, and mechanical property greatly strengthens.
Optimal technical scheme of the present invention is following:
1. TiC is strengthened in the molten aluminium that body joins 650-950 ℃; Fully stir, stirring velocity is 450-650rpm.
Described TiC strengthens body and joins in the molten aluminium, and its add-on is preferably 1-60%, further is preferably 10-50%, most preferably is 20-40%.In aforementioned content range, TiC strengthens the content of body in molten aluminium can be realized improving to greatest extent, and the size that keeps simultaneously strengthening body crystal grain does not increase, thereby the strengthening effect performance is extremely best.
The temperature of said molten aluminium for example is 650-800 ℃, 700-900 ℃, and 690-950 ℃, 750-870 ℃, 671 ℃, 689 ℃, 715 ℃, 840 ℃, 922 ℃, be preferably 750-950 ℃, further be preferably 800-950 ℃, most preferably be 900 ℃.
Said stirring velocity is 450-650rpm, 450-600rpm for example, and 500-550rpm, 485-650rpm, 490rpm, 534rpm, 567rpm, 650rpm is preferably 500-600rpm, further is preferably 520-580rpm, most preferably is 550rpm.
2. rising molten aluminium temperature is to 1100-1400 ℃ and kept 2-5 hour.
For example kept 2-4.5 hour, kept 3.1 hours, kept 4-5 hour, kept 2 hours at 1250-1390 ℃ at 1130-1380 ℃ at 1050-1300 ℃ at 1100-1200 ℃; Preferably kept 2.5-4.5 hour at 1200-1350 ℃; Most preferably kept 3-4 hour at 1250-1350 ℃.
3. with after the atomizing of step 2 products therefrom, in 0.5-3 * 10
5Directly solidify under kPa and 800-1200 ℃ the condition.
For example in 1-3 * 10
5Directly solidify under kPa and 800-1000 ℃ the condition, in 0.5-2 * 10
5Directly solidify under kPa and 900-1200 ℃ the condition, in 1-2.2 * 10
5Directly solidify under kPa and 950-1100 ℃ the condition, in 2-2.5 * 10
5Directly solidify under kPa and 980-1200 ℃ the condition; Preferably in 1-2 * 10
5Directly solidify under kPa and 900-1100 ℃ the condition; Most preferably 1.5 * 10
5Directly solidify under kPa and 950-1050 ℃ the condition.
4. cured product is directly formed enhancement type aluminium titanium carbon alloy wire rod through 5-20 cold drawn annealing.
Said cold drawn number of times is preferably 8-15 time, further is preferably 10-15 time, most preferably is 15 times.
Said cold drawn its cross section economy each time is at 10-30%, 10-25% for example, and 15-35%, 18-40% is preferably 10-25%, most preferably is 15-20%.
Said its diameter of enhancement type aluminium titanium carbon alloy wire rod is preferably below the 0.02cm, further is preferably below the 0.01cm.
Said annealing is preferably in rare gas element to be carried out, and said rare gas element is a kind of or any at least two kinds of mixed gass formed with arbitrary proportion in helium, neon, argon, krypton, xenon, the radon; Further preferably, said annealing carried out when each sectional shrinkage reaches 40-60%, 40-50% for example, and 45-52%, 49-58%, 51-60%, 43%, 46%, 50%, 54%, 57%, be preferably 45-55%, most preferably be 48-52%.This kind method for annealing has been eliminated unrelieved stress and has been recovered ductility through increasing the annealing frequency, has reduced the successional fracture of length to greatest extent, thereby has alleviated work hardening, and the alloy wire fineness that produces is high, and mechanical property is good.
Optimal technical solution of the present invention is following:
1. TiC is strengthened in the molten aluminium that body joins 900 ℃, it is the 20-40% of molten aluminium mass content that TiC strengthens the body add-on, fully stirs, and stirring velocity is 550rpm;
2. rising molten aluminium temperature is to 1250-1350 ℃ and kept 3-4 hour;
3. with after the atomizing of step 2 products therefrom, 1.5 * 10
5Directly solidify under kPa and 950-1050 ℃ the condition;
4. cured product is directly formed the enhancement type aluminium titanium carbon alloy wire rod below the diameter 0.01cm through 15 cold drawn annealing, said cold drawn its cross section economy each time is at 15-20%, and said annealing is when each sectional shrinkage reaches 48-52%, in argon gas, to cool off.
Compared with prior art, the present invention has following beneficial effect:
1. can make multiple duraluminum obtain the higher TiC of content and strengthen body, promptly the inventive method is not limited to improve the intensity of certain species duraluminum, but all is suitable for for the various duraluminums that have intensity to improve requirement.
2. guaranteeing to have kept the less size of its crystal grain when TiC strengthens the body high level, therefore can produce meticulous alloy wire.
3. avoided strengthening the gathering of body crystal grain through continue direct solidified mode of atomizing; Tiny crack and the cavity of also having avoided slow refrigerative casting process to form, thus guarantee not to be destroyed and can to settle out with solid-state form by the weave construction of refinement.
4. do not have course of hot rolling, the inhomogeneous and organization internal non-metallic inclusion of the weave construction that can avoid hot rolling to cause is pressed into the interlayer phenomenon that thin slice causes because of hot rolling.
5. through the repeatedly contraction of cold drawn accurate control section and the evolution of internal microstructure, eliminate the unrelieved stress that inhomogeneous cooling causes, thereby greatly reduced the generation of section crack with the cavity, wire rod fragility obviously reduces.
6. eliminate unrelieved stress and recover ductility through frequent annealing, thereby alleviate work hardening.
7. the alloy wire fineness that produces is high, and mechanical property is good.
Embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical case of the present invention but non-restrictive example is following:
Embodiment 1
1. TiC is strengthened in the molten aluminium that body joins 900 ℃, it is 35% of molten aluminium mass content that TiC strengthens the body add-on, fully stirs, and stirring velocity is 550rpm;
2. rising molten aluminium temperature to 1300 ℃ and keeping 3.5 hours;
3. with after the atomizing of step 2 products therefrom, 1.5 * 10
5Directly solidify under the condition of kPa and 1000 ℃;
4. with the enhancement type aluminium titanium carbon alloy wire rod of cured product warp 15 cold drawn annealing directly formation diameter 0.01cm, said cold drawn its cross section economy each time is 15%, and said annealing is to reach at 48% o'clock at each sectional shrinkage in argon gas, to cool off.
Adopting Dongguan City to join the material at high temperature strength tester SQW-A that wins the LS-739 of Instr Ltd. machine for tensile strength testing and Hunan, Xiang Tan appearance Instr Ltd. tests the enhancement type aluminium titanium carbon alloy wire rod that present embodiment makes; Its intensity is 320MPa, long-term heat-resisting 180 ℃ of intensity survival rates 94.7%.
Embodiment 2
1. TiC is strengthened in the molten aluminium that body joins 800 ℃, it is 20% of molten aluminium mass content that TiC strengthens the body add-on, fully stirs, and stirring velocity is 520rpm;
2. rising molten aluminium temperature to 1350 ℃ and keeping 3 hours;
3. with after the atomizing of step 2 products therefrom, 2.0 * 10
5Directly solidify under the condition of kPa and 950 ℃;
4. with the enhancement type aluminium titanium carbon alloy wire rod of cured product warp 12 cold drawn annealing directly formation diameter 0.012cm, said cold drawn its cross section economy each time is 20%, and said annealing is to reach at 52% o'clock at each sectional shrinkage in argon gas, to cool off.
Adopting Dongguan City to join the material at high temperature strength tester SQW-A that wins the LS-739 of Instr Ltd. machine for tensile strength testing and Hunan, Xiang Tan appearance Instr Ltd. tests the enhancement type aluminium titanium carbon alloy wire rod that present embodiment makes; Its intensity is 306MPa, long-term heat-resisting 180 ℃ of intensity survival rates 92.0%.
Embodiment 3
1. TiC is strengthened in the molten aluminium that body joins 950 ℃, it is 40% of molten aluminium mass content that TiC strengthens the body add-on, fully stirs, and stirring velocity is 580rpm;
2. rising molten aluminium temperature to 1250 ℃ and keeping 4 hours;
3. with after the atomizing of step 2 products therefrom, 1.0 * 10
5Directly solidify under the condition of kPa and 1050 ℃;
4. with the enhancement type aluminium titanium carbon alloy wire rod of cured product warp 10 cold drawn annealing directly formation diameter 0.015cm, said cold drawn its cross section economy each time is 18%, and said annealing is to reach at 49% o'clock at each sectional shrinkage in argon gas, to cool off.
Adopting Dongguan City to join the material at high temperature strength tester SQW-A that wins the LS-739 of Instr Ltd. machine for tensile strength testing and Hunan, Xiang Tan appearance Instr Ltd. tests the enhancement type aluminium titanium carbon alloy wire rod that present embodiment makes; Its intensity is 303MPa, long-term heat-resisting 180 ℃ of intensity survival rates 90.4%.
Embodiment 4
1. TiC is strengthened in the molten aluminium that body joins 750 ℃, it is 30% of molten aluminium mass content that TiC strengthens the body add-on, fully stirs, and stirring velocity is 500rpm;
2. rising molten aluminium temperature to 1200 ℃ and keeping 2.5 hours;
3. with after the atomizing of step 2 products therefrom, 2.5 * 10
5Directly solidify under the condition of kPa and 850 ℃;
4. with the enhancement type aluminium titanium carbon alloy wire rod of cured product warp 16 cold drawn annealing directly formation diameter 0.01cm, said cold drawn its cross section economy each time is 25%, and said annealing is to reach at 45% o'clock at each sectional shrinkage in argon gas, to cool off.
Adopting Dongguan City to join the material at high temperature strength tester SQW-A that wins the LS-739 of Instr Ltd. machine for tensile strength testing and Hunan, Xiang Tan appearance Instr Ltd. tests the enhancement type aluminium titanium carbon alloy wire rod that present embodiment makes; Its intensity is 301.5MPa, long-term heat-resisting 180 ℃ of intensity survival rates 91.3%.
Embodiment 5
1. TiC is strengthened in the molten aluminium that body joins 700 ℃, it is 15% of molten aluminium mass content that TiC strengthens the body add-on, fully stirs, and stirring velocity is 600rpm;
2. rising molten aluminium temperature to 1400 ℃ and keeping 2 hours;
3. with after the atomizing of step 2 products therefrom, 3 * 10
5Directly solidify under the condition of kPa and 800 ℃;
4. with the enhancement type aluminium titanium carbon alloy wire rod of cured product warp 8 cold drawn annealing directly formation diameter 0.018cm, said cold drawn its cross section economy each time is 30%, and said annealing is to reach at 60% o'clock at each sectional shrinkage in argon gas, to cool off.
Adopting Dongguan City to join the material at high temperature strength tester SQW-A that wins the LS-739 of Instr Ltd. machine for tensile strength testing and Hunan, Xiang Tan appearance Instr Ltd. tests the enhancement type aluminium titanium carbon alloy wire rod that present embodiment makes; Its intensity is 290MPa, long-term heat-resisting 180 ℃ of intensity survival rates 90%.
Embodiment 6
1. TiC is strengthened in the molten aluminium that body joins 650 ℃, it is 60% of molten aluminium mass content that TiC strengthens the body add-on, fully stirs, and stirring velocity is 650rpm;
2. rising molten aluminium temperature to 1380 ℃ and keeping 5 hours;
3. with after the atomizing of step 2 products therefrom, 2.5 * 10
5Directly solidify under the condition of kPa and 1200 ℃;
4. with the enhancement type aluminium titanium carbon alloy wire rod of cured product warp 18 cold drawn annealing directly formation diameter 0.009cm, said cold drawn its cross section economy each time is 10%, and said annealing is to reach at 40% o'clock at each sectional shrinkage in argon gas, to cool off.
Adopting Dongguan City to join the material at high temperature strength tester SQW-A that wins the LS-739 of Instr Ltd. machine for tensile strength testing and Hunan, Xiang Tan appearance Instr Ltd. tests the enhancement type aluminium titanium carbon alloy wire rod that present embodiment makes; Its intensity is 285MPa, long-term heat-resisting 180 ℃ of intensity survival rates 90.5%.
The comparative example
Like disclosed a kind of aluminium-titanium-carbon-boron-nitrogen master alloy that is used for refinement aluminium and duraluminum of CN 100575521C and preparation method thereof; Adopting Dongguan City to join the material at high temperature strength tester SQW-A that wins the LS-739 of Instr Ltd. machine for tensile strength testing and Hunan, Xiang Tan appearance Instr Ltd. tests the performance of its three embodiment products obtained therefroms; Its intensity is respectively 200MPa, 260MPa, 230MPa; Long-term heat-resisting 180 ℃ of intensity survival rates are respectively 80%, 90%, 75%; All be starkly lower than the product performance according to the inventive method gained, visible its intensity of enhancement type aluminium titanium carbon alloy wire rod according to the inventive method manufacturing obviously is superior to like product.
Applicant's statement, the present invention explains production stage of the present invention through the foregoing description, but the present invention is not limited to above-mentioned production stage, does not mean that promptly the present invention must rely on above-mentioned production stage and could implement.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of raw material that the present invention selects for use and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (10)
1. the method for manufacture of an enhancement type aluminium titanium carbon alloy wire rod is characterized in that, comprises the steps:
(1) TiC is strengthened body and join in the molten aluminium, fully stir;
(2) rising molten aluminium temperature is to 1100-1400 ℃ and kept 2-5 hour;
(3) step (2) products therefrom atomizing back is directly solidified;
(4) cured product is directly formed enhancement type aluminium titanium carbon alloy wire rod through cold drawn annealing repeatedly.
2. method of manufacture as claimed in claim 1 is characterized in that, said step comprises:
(1) TiC is strengthened in the molten aluminium that body joins 650-950 ℃, fully stir, stirring velocity is 450-650rpm;
(2) rising molten aluminium temperature is to 1100-1400 ℃ and kept 2-5 hour;
(3) with after the atomizing of step (2) products therefrom, in 0.5-3 * 10
5Directly solidify under kPa and 800-1200 ℃ the condition;
(4) cured product is directly formed enhancement type aluminium titanium carbon alloy wire rod through 5-20 cold drawn annealing.
3. according to claim 1 or claim 2 method of manufacture is characterized in that, the TiC described in the step (1) strengthens body and joins in the molten aluminium, and its add-on is 1-60%, is preferably 10-50%, further is preferably 20-40%.
4. like the described method of manufacture of one of claim 1-3, it is characterized in that the temperature of said molten aluminium is 750-950 ℃, be preferably 800-950 ℃, further be preferably 900 ℃; Preferably, the speed of said stirring is 500-600rpm, is preferably 520-580rpm, further is preferably 550rpm.
5. like the described method of manufacture of one of claim 1-4, it is characterized in that said step (2) is to keep 2.5-4.5 hour at 1200-1350 ℃, preferably keeps 3-4 hour at 1250-1350 ℃.。
6. like the described method of manufacture of one of claim 1-5, it is characterized in that said step (3) is in 1-2 * 10 with step (2) products therefrom
5Directly solidify under kPa and 900-1100 ℃ the condition, preferably 1.5 * 10
5Directly solidify under kPa and 950-1050 ℃ the condition.
7. like the described method of manufacture of one of claim 1-6, it is characterized in that the said cold drawn number of times of step (4) is 8-15 time, is preferably 10-15 time, further is preferably 15 times; Preferably, said cold drawn its cross section economy each time is preferably 10-25% at 10-30%, further is preferably 15-20%.
8. like the described method of manufacture of one of claim 1-7, it is characterized in that the said annealing of step (4) is carried out in rare gas element; Preferably, said annealing carried out when each sectional shrinkage reaches 40-60%, is preferably 45-55%, further is preferably 48-52%.
9. like the described method of manufacture of one of claim 1-8, it is characterized in that, the said enhancement type aluminium of step (4) titanium carbon alloy wire rod, its diameter is below the 0.02cm, to be preferably below the 0.01cm.
10. like the described method of manufacture of one of claim 1-9, it is characterized in that said step comprises:
(1) TiC is strengthened in the molten aluminium that body joins 900 ℃, it is the 20-40% of molten aluminium mass content that TiC strengthens the body add-on, fully stirs, and stirring velocity is 550rpm;
(2) rising molten aluminium temperature is to 1250-1350 ℃ and kept 3-4 hour;
(3) with after the atomizing of step 2 products therefrom, 1.5 * 10
5Directly solidify under kPa and 950-1050 ℃ the condition;
(4) cured product is directly formed the enhancement type aluminium titanium carbon alloy wire rod below the diameter 0.01cm through 15 cold drawn annealing; Said cold drawn its cross section economy each time is at 15-20%, and said annealing is when each sectional shrinkage reaches 48-52%, in argon gas, to cool off.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101486338A CN102634746B (en) | 2012-05-07 | 2012-05-07 | Manufacturing method for enhanced type aluminum, titanium and carbon alloy wire |
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| CN101068945A (en) * | 2004-07-22 | 2007-11-07 | Fmw合成物系统公司 | Method for manufacturing titanium alloy wire with enhanced properties |
| CN101775510A (en) * | 2010-02-05 | 2010-07-14 | 新星化工冶金材料(深圳)有限公司 | Aluminum-titanium-carbon alloy preparation method capable of controlling average nominal diameter of TiC particles |
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| JP4099158B2 (en) * | 2004-02-17 | 2008-06-11 | Ｔｄｋ株式会社 | Molding apparatus of alloy powder for rare earth sintered magnet, molding method thereof and slow oxidation method |
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| JPH0499158A (en) * | 1990-08-02 | 1992-03-31 | Kobe Steel Ltd | Method for piling-up, pressurizing, and annealing aluminum alloy sheet |
| JP2866917B2 (en) * | 1994-10-05 | 1999-03-08 | 工業技術院長 | Superplasticity Development Method for Ceramic Particle Reinforced Magnesium Matrix Composite by Melt Stirring Method |
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| CN101068945A (en) * | 2004-07-22 | 2007-11-07 | Fmw合成物系统公司 | Method for manufacturing titanium alloy wire with enhanced properties |
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