CN106734318B - A kind of Ti2The processing method of AlNb alloy wide sheets - Google Patents

A kind of Ti2The processing method of AlNb alloy wide sheets Download PDF

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Publication number
CN106734318B
CN106734318B CN201611132450.1A CN201611132450A CN106734318B CN 106734318 B CN106734318 B CN 106734318B CN 201611132450 A CN201611132450 A CN 201611132450A CN 106734318 B CN106734318 B CN 106734318B
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rolling
alnb
temperature
packet
ply
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CN106734318A (en
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党鹏
梁晓波
谢文龙
张建伟
戴毅
马雄
范晗
刘宇明
杨永福
唐进
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WESTERN TITANIUM TECHNOLOGIES Co Ltd
Gaona Aero Material Co Ltd
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WESTERN TITANIUM TECHNOLOGIES Co Ltd
Gaona Aero Material Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • 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
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B21B2001/386—Plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/06—Width
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention discloses a kind of Ti2The processing method of AlNb alloy wide sheets, this method are：One, by Ti2AlNb alloy slabs, which are placed in heating furnace, to be kept the temperature, and is then fed into hot-rolling mill and is carried out the first rolling, obtains the first semi-finished product slab；Two, the first semi-finished product slab is cut into 2~4 pieces of Ti2AlNb alloy semi-finished product slabs, are then stacked together, are fabricated to ply rolling packet；Three, ply rolling packet is placed in heating furnace and is kept the temperature, be then fed into hot-rolling mill and carry out the second rolling；Four, finished products processing is carried out to the ply rolling packet after the second rolling, then finished products treated ply rolling packet shearing is unpacked, then after smoothing, sanding and cutting, it is 1mm~4mm to obtain thickness, and width is the Ti of 800mm~1500mm2AlNb lattens.Processing route of the present invention is simple, and manufacturing cost is low, efficient, can prepare the thin plate of excellent in mechanical performance, and realizes mass production.

Description

A kind of Ti2The processing method of AlNb alloy wide sheets
Technical field
The invention belongs to lightweight high-temperature structural material processing technique fields, and in particular to a kind of Ti2AlNb alloy wide-thins The processing method of plate.
Background technology
It is higher and higher to the performance requirement of aerospace material with the rapid development of aerospace cause, especially Aerospace engine material, the further loss of weight of an urgent demand and the high-temperature service performance for improving material.Titanium alloy is excellent with its Comprehensive performance and as novel aerospace engine one of preferred material.However, conventional titanium alloy is due to by hot strong The limitation of property and antioxygenic property, maximum operation (service) temperature and oxidation resistance temperature can only achieve 600 DEG C, and this temperature has become The upper limit of such alloy heat resistance, far from the requirement for meeting engine thermal end pieces.Therefore, new type high temperature, height are developed The lightweight high-temperature structural material of specific strength substitutes that active service high density is Ni-based, iron-base superalloy, is improved by mitigating dead weight and is started Machine performance has very important strategic importance to the development of aerospace cause.
Ti2AlNb based alloys are a kind of novel light high-temperature structural materials of excellent combination property, have low-density, high ratio Intensity, good inoxidizability and the advantages such as nonmagnetic, become the lightweight high-temperature structural material that can be used at 600 DEG C~800 DEG C One of.Compared with high density nickel base superalloy, Ti2The density of AlNb based alloys reduces about 40%, has higher than strong Degree, greatly reduces aircraft weight, and improve the thrust-weight ratio and efficiency of engine, is the important portion of advanced aircraft engine Part and missile case ideal material.It is predicted according to current Project R＆D and situation of changing the line of production, Ti2AlNb based alloy thin plates are estimated in the present It will be more widely applied in the novel model of Aeronautics and Astronautics and weapons field afterwards, demand certainly will continue to increase, tool There is vast market prospect.
But Ti2AlNb based alloys are easy to crack since working plasticity is poor, prepare 1mm~4mm thin thick plate difficulties, especially right In preparing, the big specification thin plates of wide cut >=800mm are more difficult, and there is presently no ripe milling methods；It is rolled simultaneously using existing The Ti of method production processed2AlNb thin plates are big with plate difference, and Mechanical Property Anisotropy is big, and lumber recovery is low.Therefore using existing normal The Ti of rule method production2AlNb light sheets have been unable to meet aerospace titanium alloy plate high dimensional accuracy, transverse and longitudinal mechanics The small requirement of performance difference.
Invention content
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, provide a kind of Ti2AlNb The processing method of alloy wide sheet.The processing method passes through to rolling temperature, fire time deflection, pass deformation, rolling side The Comprehensive Control of formula, it is 1mm~4mm to prepare thickness, and width is the Ti of 800mm~1500mm2AlNb alloy wide sheets, Room temperature intensity can reach 1200MPa or more, and elongation percentage is not less than 5%, and tensile strength is reachable under 650 DEG C of hot conditions 800MPa or more, elongation percentage be not less than 6%, and the processing route is simple, manufacturing cost is low, it is efficient, can also prepare output It learns the small big specification thin plate of property anisotropy and realizes mass production.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of Ti2AlNb alloy wide sheets add Work method, which is characterized in that this approach includes the following steps：
Step 1: by the Ti that thickness is 10mm~16mm2AlNb alloys slab is (T in temperatureβ- 90) DEG C~(Tβ-30) DEG C heating furnace in keep the temperature 15min~30min, be then fed into hot-rolling mill carry out first rolling, obtain the first semi-finished product slab； First rolling is unidirection rolling, and the road number of first rolling is 4~5 passages, the passage deformation of first rolling Rate is 5%~15%, and the total deformation of first rolling is 30%~50%, and the rolling rate of first rolling is 1m/s ~2m/s；TβFor Ti2The phase transition temperature of AlNb alloy slabs；
Step 2: the first semi-finished product slab described in step 1 is cut into 2~4 pieces of Ti in the width direction2AlNb alloys Semi-finished product slab, is then stacked together, and ply rolling packet is fabricated to；The Ti2The width of AlNb alloy semi-finished product slabs is 800mm~1500mm；
Step 3: it is (T that ply rolling packet described in step 2, which is placed in temperature,β- 90) DEG C~(Tβ- 30) it is protected in heating furnace DEG C Warm 90min~120min is then fed into hot-rolling mill and carries out the second rolling, rolling direction and the first rolling of second rolling Rolling direction it is identical, it is described second rolling road number be 5~8 passages, it is described second rolling pass deformation rate be 5%~ 20%, the total deformation of second rolling is 50%~80%, and the rolling rate of second rolling is 1m/s~2m/s；
Step 4: finished products processing is carried out to the ply rolling packet in step 3 after the second rolling, then by finished products Treated, and the shearing of ply rolling packet is unpacked, the Ti after unpacking2AlNb alloys wide sheet obtains thickness after smoothing, sanding and cutting Degree is 1mm~4mm, and width is the Ti of 800mm~1500mm2AlNb alloy wide sheets；It is described under room temperature at 20 DEG C Ti2Rolling to tensile strength for AlNb alloy wide sheets is not less than 1200MPa, and elongation percentage is not less than 5%；In 650 DEG C of high temperature items The Ti under part2The tensile strength of AlNb alloy wide sheets is not less than 800MPa, and elongation percentage is not less than 6%.
A kind of above-mentioned Ti2The processing method of AlNb lattens, which is characterized in that the system of ply rolling packet described in step 2 It is as process：First in the Ti2The uniform coating thickness of upper and lower surface of AlNb alloy semi-finished product slabs is 0.03mm Then the inoxidzable coating of~0.07mm is coated with the Ti of inoxidzable coating2AlNb alloy semi-finished product slabs are stacked together Alloy stacking is formed, alloy stacking is then placed in the middle part between upper steel plate and lower steel plate, and avris is coated with steel bar, most Whole sealing forms ply rolling packet afterwards.
A kind of above-mentioned Ti2The processing method of AlNb lattens, which is characterized in that the thickness of the upper steel plate and lower steel plate Degree is 16mm~20mm.
A kind of above-mentioned Ti2The processing method of AlNb lattens, which is characterized in that the width ratio of the upper steel plate Ti2The AlNb alloy wide 100mm of semi-finished product width of plate slab, the length ratio Ti of the upper steel plate2AlNb alloy semi-finished product slab length Long 100mm.
A kind of above-mentioned Ti2The processing method of AlNb lattens, which is characterized in that the ply rolling packet is rolled perpendicular to second Stomata there are two being opened up on two side steel bars in the rolling direction of system.
A kind of above-mentioned Ti2The processing method of AlNb lattens, which is characterized in that rolled described in step 1 and step 3 The finishing temperature of system is not less than (Tβ-150)℃。
A kind of above-mentioned Ti2The processing method of AlNb lattens, which is characterized in that infrared radiation thermometer is used in step 1 To Ti2The surface temperature of AlNb alloy slabs is monitored, when temperature is less than (Tβ- 150) when DEG C, by Ti2AlNb alloy slabs It is placed in heating furnace and melt down benefit temperature, ensure Ti in the operation of rolling2The temperature of AlNb alloy slabs is in (Tβ- 150) DEG C~(Tβ- 90)℃。
A kind of above-mentioned Ti2The processing method of AlNb lattens, which is characterized in that infrared radiation thermometer is used in step 3 The surface temperature of ply rolling packet is monitored, when temperature is less than (Tβ- 150) when DEG C, ply rolling packet is placed in heating furnace and is returned Stove mends temperature, ensures the temperature of ply rolling packet in the operation of rolling in (Tβ- 150) DEG C~(Tβ-90)℃。
A kind of above-mentioned Ti2The processing method of AlNb lattens, which is characterized in that at finished products described in step 4 The temperature of reason is (Tβ- 150) DEG C~(Tβ- 90) DEG C, time 0.5h~2h of the finished products processing, at the finished products The type of cooling of reason is air-cooled.
Compared with the prior art, the present invention has the following advantages：
1, the present invention use the preparation method of pack ply-rolling to realize thickness as 1mm~4mm, width for 800mm~ The high dimensional accuracy Ti of 1500mm2The production of AlNb alloy wide sheets, has filled up domestic blank.
2, present invention pass deformation when first rolls is no more than 15%, since the alloy plasticity is bad, using small change Shape rolling can effectively reduce sheet material edge cracking；When second rolls, using sandwich rolling, slab plasticity rises, passage deformation Amount maximum can reach 20%, be rolled using large deformation, abundant crystal grain thinning, obtain strong plasticity and match good plank.
3, the present invention can produce 2~4 pieces of Ti every time using pack ply-rolling2AlNb lattens, this method have high efficiency, The advantage of low cost.
4, the Ti prepared using the method for the present invention2AlNb latten materials, anisotropy is small, in room temperature (20 DEG C) condition Under tensile strength >=1200MPa, elongation percentage >=5%, transverse and longitudinal tensile strength difference≤100MPa；It is under the conditions of 650 DEG C Tensile strength >=800MPa, elongation percentage >=6%.
5, technical solution of the present invention is complete, by quantitatively controlling the heating temperature of production process, pass deformation, fire The Comprehensive Control of total deformation, rolling mode and annealing, makes Ti2The quality of AlNb planks is ensured, is produced Ti2AlNb lattens meet the technology requirement of aerospace key member.
6, the present invention uses infrared radiation thermometer to Ti during the rolling process2AlNb alloy sheets and the surface temperature of ply rolling packet into Row monitoring, when temperature is less than (Tβ- 150) when DEG C, alloy sheets and ply rolling packet is placed in heating furnace and melt down benefit temperature, ensure to roll Ti during system2The temperature of AlNb alloy slabs is in (Tβ- 150) DEG C~(Tβ- 90) DEG C, to realize Ti2AlNb lattens Nearly constant temperature rolling.
Technical scheme of the present invention is described in further detail below by embodiment.
Description of the drawings
Fig. 1 is the structural schematic diagram of ply rolling packet of the present invention.
Fig. 2 is Ti prepared by the embodiment of the present invention 12The micro-organization chart of AlNb alloy wide sheets.
Reference sign
1-upper steel plate；2—Ti2AlNb alloy semi-finished product slabs；3-inoxidzable coatings；
4-steel bars.
Specific implementation mode
Embodiment 1
The present embodiment processes Ti2The method of AlNb alloy wide sheets includes the following steps：
Step 1: by the Ti that size is 16mm (thickness) × 800mm (width) × 1000mm (length)2AlNb alloy slabs are placed in Temperature is (Tβ- 30) 30min is kept the temperature in heating furnace DEG C, is then fed into the first rolling for carrying out 5 passages in hot-rolling mill, described the One rolling is unidirection rolling, and the rolling rate of first rolling is 1.0m/s, and each pass deformation is respectively 15.00%, 13.97%, 12.82%, 11.76%, 11.11%, total deformation 50%；Infrared measurement of temperature is used in first operation of rolling Instrument is to Ti2The surface temperature of AlNb alloy slabs is monitored, when temperature is less than (Tβ- 150) when DEG C, by Ti2AlNb alloy sheets Base, which is placed in heating furnace, melt down benefit temperature, ensures Ti in first operation of rolling2The temperature of AlNb alloy slabs is in (Tβ-150) DEG C~(Tβ-90)℃；Obtain the first semi-finished product slab that size is 8mm (thickness) × 800mm (width) × 2000mm (length)；
Step 2: by the first semi-finished product slab described in step 1 be switched in the width direction 2 block sizes be 8mm (thickness) × The Ti of 800mm (width) × 1000mm (length)2AlNb alloy semi-finished product slab 2, in every Ti2AlNb alloy semi-finished product slab 2 it is upper The uniform coating thickness in surface and lower surface be 0.03mm~0.07mm inoxidzable coating 3, then by size be 8mm (thickness) × The Ti of 2 coating inoxidzable coatings 3 of 800mm (width) × 1000mm (length)2AlNb alloy sheets are stacked together to form alloy heap Then alloy stacking is placed in the middle part between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated by pile, whole sealing shape At ply rolling packet (as shown in Figure 1), finally it is drilled with out respectively on two side steel bars 4 in the rolling direction perpendicular to the second rolling Two stomatas；The thickness of the upper steel plate 1 and lower steel plate is 16mm；
Step 3: it is (T that the ply rolling packet described in step 2, which is placed in temperature,β- 30) 90min is kept the temperature in heating furnace DEG C, It is then fed into the second rolling that 5 passages are carried out in hot-rolling mill, the rolling side of the rolling direction and the first rolling of second rolling To identical, the rolling rate of second rolling is 1.5m/s, and each pass deformation is respectively 18.75%, 15.38%, 12.73%, 10.42%, 6.98%, total deformation 50%；Using infrared radiation thermometer to ply rolling packet in second operation of rolling Surface temperature be monitored, when temperature be less than (Tβ- 150) when DEG C, ply rolling packet is placed in heating furnace and melt down benefit temperature, is protected The temperature of ply rolling packet in the operation of rolling is demonstrate,proved in (Tβ- 150) DEG C~(Tβ-90)℃；It is 24mm (thickness) × 900mm (width) to obtain size The ply rolling packet of × 2200mm (length)；
Step 4: in step 3 through second rolling after ply rolling packet temperature be (Tβ- 90) carried out under conditions of DEG C at Product make annealing treatment, and keep the temperature natural cooling after 75min, and packet then is opened in finished products treated ply rolling packet shearing, then through smoothing, After sanding and cutting, the Ti that size is 4.0mm (thickness) × 800mm (width) × 2000mm (length) is obtained2AlNb lattens.
The Ti processed using the present embodiment2AlNb lattens material is in 20 DEG C of rolling to tensile strength and be under room temperature 1250MPa, elongation percentage 6%；Transverse tensile strength is 1280MPa, elongation percentage 5.5%；Stretching under the conditions of 650 DEG C Intensity is 870MPa, and elongation percentage 8%, thickness deviation is no more than ± 0.25mm.
Fig. 2 is Ti manufactured in the present embodiment2The micro-organization chart of AlNb alloy wide sheets, as can be known from Figure, the thin plate Even tissue, there is no between tissue macroscopic view or microcosmic slight crack to exist.
Embodiment 2
The present embodiment processes Ti2The method of AlNb alloy wide sheets includes the following steps：
Step 1: by the Ti that size is 10mm (thickness) × 1200mm (width) × 1200mm (length)2AlNb alloy slabs are placed in Temperature is (Tβ- 90) 15min is kept the temperature in heating furnace DEG C, is then fed into the first rolling for carrying out 5 passages in hot-rolling mill, described the One rolling is unidirection rolling, and the rolling rate of first rolling is 2.0m/s, and each pass deformation is respectively 15.00%, 14.12%, 13.70%, 12.70%, 9.09%, total deformation 50%；Infrared radiation thermometer is used in first operation of rolling To Ti2The surface temperature of AlNb alloy slabs is monitored, when temperature is less than (Tβ- 150) when DEG C, by Ti2AlNb alloy slabs It is placed in heating furnace and melt down benefit temperature, ensure Ti in first operation of rolling2The temperature of AlNb alloy slabs is in (Tβ-150)℃ ~(Tβ-90)℃；Obtain the first semi-finished product slab that size is 5mm (thickness) × 1200mm (width) × 2400mm (length)；
Step 2: by the first semi-finished product slab described in step 1 be switched in the width direction 2 block sizes be 5mm (thickness) × The Ti of 1200mm (width) × 600mm (length)2AlNb alloy semi-finished product slab 2, in every Ti2AlNb alloy semi-finished product slab 2 it is upper The uniform coating thickness in surface and lower surface be 0.03mm~0.07mm inoxidzable coating 3, then by size be 5mm (thickness) × The Ti of 4 coating inoxidzable coatings 3 of 1200mm (width) × 600mm (length)2AlNb alloy sheets are stacked together to form alloy heap Then alloy stacking is placed in the middle part between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated by pile, whole sealing shape At ply rolling packet, it is finally drilled with out two stomatas respectively on two side steel bars 4 in the rolling direction perpendicular to the second rolling；Institute The thickness for stating upper steel plate 1 and lower steel plate is 20mm；
Step 3: it is (T that the ply rolling packet described in step 2, which is placed in temperature,β- 40) 105min is kept the temperature in heating furnace DEG C, It is then fed into the second rolling that 8 passages are carried out in hot-rolling mill, the rolling side of the rolling direction and the first rolling of second rolling To identical, the rolling rate of second rolling is 2.0m/s, and each pass deformation is respectively 20.00%, 20.00%, 19.69%, 19.46%, 19.81%, 18.07%, 14.71%, 13.79%, total deformation 80%；It was rolled second The surface temperature of ply rolling packet is monitored using infrared radiation thermometer in journey, when temperature is less than (Tβ- 150) when DEG C, by ply rolling packet It is placed in heating furnace and melt down benefit temperature, ensure the temperature of ply rolling packet in the operation of rolling in (Tβ- 150) DEG C~(Tβ-90)℃； To the ply rolling packet that size is 12mm (thickness) × 1300mm (width) × 3500mm (length)；
Step 4: in step 3 through second rolling after ply rolling packet temperature be (Tβ- 120) carried out under conditions of DEG C at Product make annealing treatment, and keep the temperature natural cooling in air after 30min, and packet then is opened in the ply rolling packet shearing after annealing, then through smoothing, After sanding and cutting, the Ti that size is 1.0mm (thickness) × 1200mm (width) × 3000mm (length) is obtained2AlNb lattens.
The Ti processed using the present embodiment2AlNb lattens material is in 20 DEG C of rolling to tensile strength and be under room temperature 1295MPa, elongation percentage 5%；Transverse tensile strength is 1267MPa, elongation percentage 5%；Stretching under the conditions of 650 DEG C is strong Degree is 845MPa, and elongation percentage 6%, thickness deviation is no more than ± 0.1mm.
Embodiment 3
The present embodiment processes Ti2The method of AlNb alloy wide sheets includes the following steps：
Step 1: by the Ti that size is 13mm (thickness) × 1500mm (width) × 1500mm (length)2AlNb alloy slabs are placed in Temperature is (Tβ- 60) 22.5min is kept the temperature in heating furnace DEG C, is then fed into the first rolling for carrying out 5 passages in hot-rolling mill, it is described First rolling is unidirection rolling, and the rolling rate of first rolling is 1.5m/s, and each pass deformation is respectively 12.31%, 11.40%, 10.89%, 8.78%, 5.00%, total deformation 40%；Infrared radiation thermometer is used in first operation of rolling To Ti2The surface temperature of AlNb alloy slabs is monitored, when temperature is less than (Tβ- 150) when DEG C, by Ti2AlNb alloy slabs are set It carries out melting down benefit temperature in heating furnace, ensures Ti in first operation of rolling2The temperature of AlNb alloy slabs is in (Tβ- 150) DEG C~ (Tβ-90)℃；Obtain the first semi-finished product slab that size is 7.8mm (thickness) × 1500mm (width) × 2500mm (length)；
Step 2: it is 7.8mm (thickness) that the first semi-finished product slab described in step 1 is switched to 3 chip sizes in the width direction The Ti of × 1500mm (width) × 833mm (length)2AlNb alloy semi-finished product slab 2, in every Ti2AlNb alloy semi-finished product slab 2 The uniform coating thickness of upper and lower surface be 0.03mm~0.07mm inoxidzable coating 3, then by size be 7.8mm The Ti of 3 coating inoxidzable coatings 3 of (thickness) × 1500mm (width) × 833mm (length)2AlNb alloy sheets are stacked together to be formed Then alloy stacking is placed in the middle part between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated by alloy stacking, whole Sealing forms ply rolling packet, is finally drilled with out two respectively on two side steel bars 4 in the rolling direction perpendicular to the second rolling Stomata；The thickness of the upper steel plate 1 and lower steel plate is 20mm；
Step 3: it is (T that the ply rolling packet described in step 2, which is placed in temperature,β- 60) 120min is kept the temperature in heating furnace DEG C, It is then fed into the second rolling that 7 passages are carried out in hot-rolling mill, the rolling side of the rolling direction and the first rolling of second rolling To identical, it is 1.5m/s to keep rolling rate, and each pass deformation is respectively 19.23%, 19.05%, 19.61%, 19.51%, 16.27%, 10.86%, 5.00%, total deformation 70%；Infrared radiation thermometer is used in second operation of rolling The surface temperature of ply rolling packet is monitored, when temperature is less than (Tβ- 150) when DEG C, ply rolling packet is placed in heating furnace and is returned Stove mends temperature, ensures the temperature of ply rolling packet in the operation of rolling in (Tβ- 150) DEG C~(Tβ-90)℃；It is 19.02mm (thickness) to obtain size The ply rolling packet of × 1600mm (width) × 3110mm (length)；
Step 4: carrying out finished products to the ply rolling packet in step 3 after the second rolling, concrete system is：It is in temperature (Tβ- 150) in air natural cooling after heat preservation 70min under conditions of DEG C, packet then is opened into the ply rolling packet shearing after annealing, then pass through After smoothing, sanding and cutting, the Ti2AlNb alloys that size is 2.34mm (thickness) × 1500mm (width) × 2776mm (length) are obtained Thin plate.
The Ti processed using the present embodiment2AlNb light sheets are in 20 DEG C of rolling to tensile strength and be under room temperature 1305MPa, elongation percentage 6%；Transverse tensile strength is 1298MPa, elongation percentage 5.5%；Stretching under the conditions of 650 DEG C is strong Degree is 868MPa, elongation percentage 6.5%.Thickness deviation is no more than ± 0.2mm.
Embodiment 4
The present embodiment processes Ti2The method of AlNb alloy wide sheets includes the following steps：
Step 1: by the Ti that size is 10mm (thickness) × 1000mm (width) × 1500mm (length)2AlNb titanium alloy slabs are set In temperature be (Tβ- 50) 15min is kept the temperature in heating furnace DEG C, is then fed into the first rolling for carrying out 4 passages in hot-rolling mill, it is described First rolling is unidirection rolling, and it is 1.0m/s to keep rolling rate, and each pass deformation is respectively 10.00%, 8.89%, 8.54%, 6.67%, total deformation 30%；Using infrared radiation thermometer to Ti in first operation of rolling2AlNb alloy slabs Surface temperature be monitored, when temperature be less than (Tβ- 150) when DEG C, by Ti2AlNb alloy slabs, which are placed in heating furnace, to be returned Stove mends temperature, ensures Ti in first operation of rolling2The temperature of AlNb alloy slabs is in (Tβ- 150) DEG C~(Tβ-90)℃；Obtain size For the first semi-finished product slab of 7.0mm (thickness) × 1000mm (width) × 2142mm (length)；
Step 2: by the first semi-finished product slab described in step 1 be switched in the width direction 3 chip sizes be 7.0mm (thickness) × The Ti of 1000mm (width) × 714mm (length)2AlNb alloy semi-finished product slab 2, in every Ti2AlNb alloy semi-finished product slab 2 The uniform coating thickness of upper and lower surface is the inoxidzable coating 3 of 0.03mm~0.07mm, is then 7.0mm by size The Ti of 3 coating inoxidzable coatings 3 of (thickness) × 1000mm (width) × 714mm (length)2AlNb alloy sheets are stacked together to be formed Then alloy stacking is placed in the middle part between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated by alloy stacking, whole Sealing forms ply rolling packet, is finally drilled with out two respectively on two side steel bars 4 in the rolling direction perpendicular to the second rolling Stomata；The thickness of the upper steel plate 1 and lower steel plate is 20mm；
Step 3: it is (T that the ply rolling packet described in step 2, which is placed in temperature,β- 40) 100min is kept the temperature in heating furnace DEG C, It is then fed into the second rolling that 6 passages are carried out in hot-rolling mill, the rolling side of the rolling direction and the first rolling of second rolling To identical, it is 1.0m/s to keep rolling rate, and each pass deformation is respectively 17.14%, 18.97%, 17.02%, 17.95%, 12.50%, 12.50%, total deformation 65%；Using infrared radiation thermometer to ply rolling packet in second operation of rolling Surface temperature be monitored, when temperature be less than (Tβ- 150) when DEG C, ply rolling packet is placed in heating furnace and melt down benefit temperature, is protected The temperature of ply rolling packet in the operation of rolling is demonstrate,proved in (Tβ- 150) DEG C~(Tβ-90)℃；It is 21.35mm (thickness) × 1100mm to obtain size The ply rolling packet of (width) × 2325.7mm (length)；
Step 4: carrying out finished products to the ply rolling packet in step 3 after the second rolling, concrete system is：It is in temperature (Tβ- 130) in air natural cooling after heat preservation 90min under conditions of DEG C, packet then is opened into the ply rolling packet shearing after annealing, then pass through After smoothing, sanding and cutting, the Ti that size is 2.45mm (thickness) × 1000mm (width) × 2040mm (length) is obtained2AlNb alloys Thin plate.
The Ti processed using the present embodiment2AlNb light sheets are in 20 DEG C of rolling to tensile strength and be under room temperature 1268MPa, elongation percentage 6.5%；Transverse tensile strength is 1279MPa, elongation percentage 6%；Stretching under the conditions of 650 DEG C is strong Degree is 852MPa, and elongation percentage 7%, thickness deviation is no more than ± 0.2mm.
Embodiment 5
The present embodiment processes Ti2The method of AlNb alloy wide sheets includes the following steps：
Step 1: by the Ti that size is 10mm (thickness) × 1200mm (width) × 1500mm (length)2AlNb titanium alloy slabs are set In temperature be (Tβ- 60) 15min is kept the temperature in heating furnace DEG C, is then fed into the first rolling for carrying out 5 passages in hot-rolling mill, it is described First rolling is unidirection rolling, and it is 1.0m/s to keep rolling rate, and each pass deformation is respectively 15.00%, 14.12%, 13.70%, 12.70%, 9.09%, total deformation 50%；Infrared radiation thermometer pair is used in first operation of rolling Ti2The surface temperature of AlNb alloy slabs is monitored, when temperature is less than (Tβ- 150) when DEG C, by Ti2AlNb alloy slabs are set It carries out melting down benefit temperature in heating furnace, ensures Ti in first operation of rolling2The temperature of AlNb alloy slabs is in (Tβ- 150) DEG C~ (Tβ-90)℃；Obtain the first semi-finished product slab that size is 5.0mm (thickness) × 1200mm (width) × 3000mm (length)；
Step 2: it is 5.0mm (thickness) that the first semi-finished product slab described in step 1 is switched to 4 chip sizes in the width direction The Ti of × 1200mm (width) × 750mm (length)2AlNb alloy semi-finished product slab 2, in every Ti2AlNb alloy semi-finished product slab 2 The uniform coating thickness of upper and lower surface be 0.03mm~0.07mm inoxidzable coating 3, then by size be 5.0mm The Ti of 4 coating inoxidzable coatings 3 of (thickness) × 1200mm (width) × 750mm (length)2AlNb alloy sheets are stacked together to be formed Then alloy stacking is placed in the middle part between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated by alloy stacking, whole Sealing forms ply rolling packet, is finally drilled with out two respectively on two side steel bars 4 in the rolling direction perpendicular to the second rolling Stomata；The thickness of the upper steel plate 1 and lower steel plate is 20mm；
Step 3: it is (T that the ply rolling packet described in step 2, which is placed in temperature,β- 90) 110min is kept the temperature in heating furnace DEG C, It is then fed into the second rolling that 5 passages are carried out in hot-rolling mill, the rolling side of the rolling direction and the first rolling of second rolling To identical, it is 1.0m/s to keep rolling rate, and each pass deformation is respectively 16.00%, 14.29%, 13.89%, 12.90%, 7.41%, total deformation 50%；Using infrared radiation thermometer to the surface temperature of ply rolling packet in second operation of rolling Degree is monitored, when temperature is less than (Tβ- 150) when DEG C, ply rolling packet is placed in heating furnace and melt down benefit temperature, guarantee rolled The temperature of ply rolling packet is in (T in journeyβ- 150) DEG C~(Tβ-90)℃；Obtain size be 30mm (thickness) × 1300mm (width) × The ply rolling packet of 1700mm (length)；
Step 4: carrying out finished products to the ply rolling packet in step 3 after the second rolling, concrete system is：It is in temperature (Tβ- 90) in air natural cooling after heat preservation 120min under conditions of DEG C, packet then is opened into the ply rolling packet shearing after annealing, then pass through After smoothing, sanding and cutting, the Ti that size is 2.5mm (thickness) × 1200mm (width) × 1500mm (length) is obtained2AlNb alloys are thin Plate.
The Ti processed using the present embodiment2AlNb lattens material is in 20 DEG C of rolling to tensile strength and be under room temperature 1287MPa, elongation percentage 6.0%；Transverse tensile strength is 1290MPa, elongation percentage 6.5%；Stretching under the conditions of 650 DEG C Intensity is 871MPa, and elongation percentage 7%, thickness deviation is no more than ± 0.2mm.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention.It is every according to invention skill Art essence still falls within technical solution of the present invention to any simple modification, change and equivalence change made by above example Protection domain in.

Claims (6)

1. a kind of Ti2The processing method of AlNb alloy wide sheets, which is characterized in that this approach includes the following steps：
Step 1: by the Ti that thickness is 10mm~16mm2AlNb alloys slab is (T in temperatureβ- 90) DEG C~(Tβ- 30) DEG C plus 15min~30min is kept the temperature in hot stove, is then fed into hot-rolling mill and is carried out the first rolling, obtains the first semi-finished product slab；Described One rolling is unidirection rolling, and the road number of first rolling is 4~5 passages, and the pass deformation rate of first rolling is 5% ~15%, the total deformation of first rolling is 30%~50%, and the rolling rate of first rolling is 1m/s~2m/s； TβFor Ti2The phase transition temperature of AlNb alloy slabs；The finishing temperature of first rolling is not less than (Tβ-150)℃；
Step 2: the first semi-finished product slab described in step 1 is cut into 2~4 pieces of Ti in the width direction2AlNb alloy semi-finished product Slab (2), is then stacked together, and ply rolling packet is fabricated to；The Ti2The width of AlNb alloy semi-finished product slabs (2) is 800mm~1500mm；
Step 3: it is (T that ply rolling packet described in step 2, which is placed in temperature,β- 90) DEG C~(Tβ- 30) it is kept the temperature in heating furnace DEG C 90min~120min is then fed into hot-rolling mill and carries out the second rolling, rolling direction and the first rolling of second rolling Rolling direction is identical, it is described second rolling road number be 5~8 passages, it is described second rolling pass deformation rate be 5%~ 20%, the total deformation of second rolling is 50%~80%, and the rolling rate of second rolling is 1m/s~2m/s；Institute The finishing temperature for stating the second rolling is not less than (Tβ-150)℃；
Step 4: carrying out finished products processing to the ply rolling packet in step 3 after the second rolling, then finished products are handled Ply rolling packet shearing afterwards is unpacked, the Ti after unpacking2After smoothing, sanding and cutting, obtain thickness is AlNb alloys wide sheet 1mm~4mm, width are the Ti of 800mm~1500mm2AlNb alloy wide sheets；In 20 DEG C of Ti under room temperature2AlNb Rolling to tensile strength for alloy wide sheet is not less than 1200MPa, and elongation percentage is not less than 5%；It is described under 650 DEG C of hot conditions Ti2The tensile strength of AlNb alloy wide sheets is not less than 800MPa, and elongation percentage is not less than 6%.
2. a kind of Ti according to claim 12The processing method of AlNb alloy wide sheets, which is characterized in that in step 2 The manufacturing process of the ply rolling packet is：First in the Ti2The upper and lower surface of AlNb alloy semi-finished product slabs (2) is uniform Coating thickness is the inoxidzable coating (3) of 0.03mm~0.07mm, is then coated with the Ti of inoxidzable coating2AlNb alloys half Finished product slab (2) is stacked together to form alloy stacking, during alloy stacking is then placed in upper steel plate (1) between lower steel plate Portion, and avris is coated with steel bar (4), last entirety sealing forms ply rolling packet.
3. a kind of Ti according to claim 22The processing method of AlNb alloy wide sheets, which is characterized in that the upper steel The thickness of plate (1) and lower steel plate is 16mm~20mm.
4. a kind of Ti according to claim 22The processing method of AlNb alloy wide sheets, which is characterized in that the upper steel The width ratio Ti of plate (1)2AlNb alloy semi-finished product slab (2) wide 100mm of width, the length ratio Ti of the upper steel plate (1)2AlNb Alloy semi-finished product slab (2) long 100mm of length.
5. a kind of Ti according to claim 22The processing method of AlNb alloy wide sheets, which is characterized in that the ply rolling Wrap stomata there are two being opened up on two side steel bars (4) in the rolling direction of the second rolling.
6. a kind of Ti according to claim 12The processing method of AlNb alloy wide sheets, which is characterized in that in step 4 The temperature of the finished products processing is (Tβ- 150) DEG C~(Tβ- 90) DEG C, time 0.5h~2h of the finished products processing, The type of cooling of the finished products processing is air-cooled.
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CN110639953A (en) * 2019-09-19 2020-01-03 燕山大学 Multi-pass isothermal hot rolling method for improving mechanical property of powder metallurgy Ti-22Al-25Nb alloy
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CN113680821B (en) * 2021-07-29 2023-09-08 宝钛集团有限公司 Preparation method of Incoloy alloy wide sheet
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