CN106734318A - 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
CN106734318A
CN106734318A CN201611132450.1A CN201611132450A CN106734318A CN 106734318 A CN106734318 A CN 106734318A CN 201611132450 A CN201611132450 A CN 201611132450A CN 106734318 A CN106734318 A CN 106734318A
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rolling
alnb
temperature
ply
bag
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CN106734318B (en
Inventor
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, the method is：First, by Ti2AlNb alloy slabs are placed in heating furnace and are incubated, and are then fed into carrying out the first rolling in hot-rolling mill, obtain the first semi-finished product slab；2nd, the first semi-finished product slab is cut into 2~4 pieces of Ti2AlNb alloy semi-finished product slabs, are then stacked together, and are fabricated to ply rolling bag；3rd, ply rolling bag is placed in heating furnace and is incubated, be then fed into carrying out the second rolling in hot-rolling mill；4th, finished products treatment is carried out to the ply rolling bag after being rolled through second, the shearing of ply rolling bag after then finished products are processed is unpacked, then through smoothing, sanding and cutting after, obtain thickness for 1mm~4mm, width is the Ti of 800mm~1500mm2AlNb lattens.Processing route of the present invention is simple, and preparation cost is low, efficiency high, can prepare the thin plate of excellent in mechanical performance, and realizes producing in enormous quantities.

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 field, and in particular to a kind of Ti2AlNb alloy wide-thins The processing method of plate.
Background technology
With developing rapidly for Aero-Space cause, to the performance requirement more and more higher of Aero-Space material, especially The high-temperature service performance of Aero-Space engine material, the further loss of weight of an urgent demand and raising material.Titanium alloy is excellent with its Combination property and turn into one of preferred material of new Aero-Space engine.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 turned into The upper limit of such alloy heat resistance, far from the use requirement for meeting engine thermal end pieces.Therefore, exploitation new type high temperature, height The lightweight high-temperature structural material of specific strength substitutes that active service high density is Ni-based, iron-base superalloy, is started by mitigating deadweight raising Machine performance, has very important strategic importance to the development of Aero-Space cause.
Ti2AlNb based alloys are a kind of novel light high-temperature structural materials of excellent combination property, with low-density, ratio high Intensity, good inoxidizability and the advantage such as nonmagnetic, as can be in 600 DEG C~800 DEG C lightweight high-temperature structural materials for using One of.Compared with high density nickel base superalloy, Ti2The density of AlNb based alloys reduces about 40%, strong with ratio higher Degree, greatly reduces aircraft weight, and improves the thrust-weight ratio and efficiency of engine, is the important portion of advanced aircraft engine Part and missile case ideal material.Predicted according to current Project R＆D and situation of changing the line of production, Ti2AlNb based alloy thin plates were expected in the present To be more widely applied in rear Aeronautics and Astronautics and the new model in weapons field, demand certainly will continue increase, tool There are wide market prospects.
But Ti2AlNb based alloys are poor due to working plasticity, easy to crack, prepare 1mm~4mm thin thick plates difficulty, especially right In preparing, the big specification thin plates of wide cut >=800mm are increasingly difficult, there is presently no ripe milling method；Rolled using existing simultaneously 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 can not meet Aero-Space titanium alloy plate high dimensional accuracy, transverse and longitudinal mechanics The small requirement of performance difference.
The content of the invention
The technical problems to be solved by the invention are for above-mentioned the deficiencies in the prior art, there is provided a kind of Ti2AlNb The processing method of alloy wide sheet.The processing method is by rolling temperature, fire time deflection, pass deformation, rolling side The Comprehensive Control of formula, prepares thickness for 1mm~4mm, and width is the Ti of 800mm~1500mm2AlNb alloy wide sheets, its Room temperature strength can reach more than 1200MPa, and elongation percentage is not less than 5%, and tensile strength is up to 800MPa under 650 DEG C of hot conditions More than, elongation percentage is not less than 6%, and the processing route is simple, preparation cost is low, efficiency high, can also prepare mechanical property The small big specification thin plate of anisotropy simultaneously is realized producing in enormous quantities.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of Ti2AlNb alloy wide sheets plus Work method, it is characterised in that the method is comprised the following steps：
Step one, by thickness for 10mm~16mm Ti2AlNb alloys slab is (T in temperatureβ- 90) DEG C~(Tβ-30)℃ Heating furnace in be incubated 15min~30min, be then fed into carrying out the first rolling in hot-rolling mill, obtain the first semi-finished product slab；Institute The first rolling is stated for unidirection rolling, the road number of times of first rolling is 4~5 passages, the pass deformation rate of first rolling Be 5%~15%, it is described first rolling total deformation be 30%~50%, it is described first rolling rolling speed for 1m/s~ 2m/s；TβIt is Ti2The phase transition temperature of AlNb alloy slabs；
Step 2, the first semi-finished product slab described in step one is cut into 2~4 pieces of Ti in the width direction2AlNb alloys Semi-finished product slab, is then stacked together, and is fabricated to ply rolling bag；The Ti2The width of AlNb alloy semi-finished product slabs is 800mm~1500mm；
Step 3, ply rolling bag described in step 2 is placed in temperature for (Tβ- 90) DEG C~(Tβ- 30) protected in heating furnace DEG C Warm 90min~120min, is then fed into carrying out the second rolling, rolling direction and first rolling of second rolling in hot-rolling mill Rolling direction it is identical, the road number of times of second rolling is 5~8 passages, the pass deformation rate of second rolling for 5%~ 20%, the total deformation of second rolling is 50%~80%, and the rolling speed of second rolling is 1m/s~2m/s；
Step 4, in step 3 through second roll after ply rolling bag carry out finished products treatment, then by finished products Ply rolling bag shearing after treatment is unpacked, the Ti after unpacking2After AlNb alloys wide sheet is through smoothing, sanding and cutting, thickness is obtained It is 1mm~4mm to spend, and width is the Ti of 800mm~1500mm2AlNb alloy wide sheets；It is described under 20 DEG C of room temperature conditions Ti2Rolling for AlNb alloy wide sheets is not less than 1200MPa to tensile strength, and elongation percentage is not less than 5%；In 650 DEG C of high temperature bars 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, it is characterised in that the system of ply rolling bag 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 The inoxidzable coating of~0.07mm, is then coated with the Ti of inoxidzable coating2AlNb alloy semi-finished product slabs are stacked together Alloy stacking, the middle part that then alloy stacking is placed between upper steel plate and lower steel plate are formed, and avris is coated with steel bar, most Overall sealing forms ply rolling bag afterwards.
A kind of above-mentioned Ti2The processing method of AlNb lattens, it is characterised 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, it is characterised in that the width ratio of the upper steel plate Ti2AlNb alloy semi-finished product width of plate slab 100mm wide, the length of the upper steel plate compares Ti2AlNb alloy semi-finished product slab length is long 100mm。
A kind of above-mentioned Ti2The processing method of AlNb lattens, it is characterised in that the ply rolling bag rolls perpendicular to second Two stomatas are offered in the rolling direction of system on two side steel bars.
A kind of above-mentioned Ti2The processing method of AlNb lattens, it is characterised in that rolled described in step one 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, it is characterised in that infrared radiation thermometer is used in step one 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 put Carry out melting down benefit temperature in heating furnace, it is ensured that 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, it is characterised in that infrared radiation thermometer is used in step 3 Surface temperature to ply rolling bag is monitored, when temperature is less than (Tβ- 150) when DEG C, ply rolling bag is placed in heating furnace and is returned Stove mends temperature, it is ensured that the temperature of ply rolling bag is in (T in the operation of rollingβ- 150) DEG C~(Tβ-90)℃。
A kind of above-mentioned Ti2The processing method of AlNb lattens, it is characterised in that described in step 4 at finished products The temperature of reason is (Tβ- 150) DEG C~(Tβ- 90) DEG C, the time 0.5h~2h of the finished products treatment, at the finished products The type of cooling of reason is air cooling.
The present invention has advantages below compared with prior art：
1st, it is 1mm~4mm that the present invention use the preparation method of pack ply-rolling to realize thickness, width for 800mm~ The high dimensional accuracy Ti of 1500mm2The production of AlNb alloy wide sheets, has filled up domestic blank.
2nd, present invention pass deformation when first rolls is no more than 15%, because the alloy plasticity is bad, using small change Shape rolling is effectively reduced 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 sheet material.
3rd, the present invention can produce 2~4 pieces of Ti every time using pack ply-rolling2AlNb lattens, the method have high efficiency, The advantage of low cost.
4th, the Ti prepared using the inventive method2AlNb latten materials, anisotropy is small, and it is 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%.
5th, technical solution of the present invention is complete, by the heating-up temperature, pass deformation, the fire that quantitatively control production process The Comprehensive Control of total deformation, rolling mode and annealing, makes Ti2The quality of AlNb sheet materials is ensured, produced Ti2AlNb lattens meet the technical requirements of Aero-Space key member.
6th, the present invention uses infrared radiation thermometer to Ti in the operation of rolling2The surface temperature of AlNb alloy sheets and ply rolling bag is entered Row monitoring, when temperature is less than (Tβ- 150) when DEG C, alloy sheets and ply rolling bag are placed in heating furnace to be carried out melting down benefit temperature, it is ensured that rolled Ti during system2The temperature of AlNb alloy slabs is in (Tβ- 150) DEG C~(Tβ- 90) DEG C, so as to realize Ti2AlNb lattens Nearly constant temperature rolling.
Technical scheme is described in further detail below by embodiment.
Specific embodiment
Fig. 1 is the structural representation of ply rolling bag 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.Description of reference numerals
1-upper steel plate；2—Ti2AlNb alloy semi-finished product slabs；3-inoxidzable coating；
4-steel bar.
Specific embodiment
Embodiment 1
The present embodiment processes Ti2The method of AlNb alloy wide sheets is comprised the following steps：
Step one, by size for 16mm (thickness) × 800mm (width) × 1000mm (length) Ti2AlNb alloy slabs are placed in temperature It is (T to spendβ- 30) 30min is incubated in heating furnace DEG C, is then fed into hot-rolling mill carrying out the first rolling of 5 passages, described first It is unidirection rolling to roll, and the rolling speed 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 is 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 are put Carry out melting down benefit temperature in heating furnace, it is ensured that 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, the first semi-finished product slab described in step one is switched in the width direction 2 block sizes for 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 Surface and the uniform coating thickness of lower surface are the inoxidzable coating 3 of 0.03mm~0.07mm, then by size be 8mm (thickness) × 2 Ti of coating inoxidzable coating 3 of 800mm (width) × 1000mm (length)2AlNb alloy sheets are stacked together to form alloy heap Pile, the middle part that then alloy stacking is placed between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated, overall sealing shape Into ply rolling bag (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, the ply rolling bag described in step 2 is placed in temperature for (Tβ- 30) 90min is incubated in heating furnace DEG C, It is then fed into hot-rolling mill carrying out the second rolling of 5 passages, the rolling direction of second rolling and the rolling side of the first rolling To identical, the rolling speed 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 is 50%；Using infrared radiation thermometer to ply rolling bag in second operation of rolling Surface temperature be monitored, when temperature be less than (Tβ- 150) when DEG C, ply rolling bag is placed in heating furnace to carry out melting down benefit temperature, protects The temperature of ply rolling bag is in (T in the card operation of rollingβ- 150) DEG C~(Tβ-90)℃；Size is obtained for 24mm (thickness) × 900mm (width) The ply rolling bag of × 2200mm (length)；
Step 4, in step 3 through second roll after ply rolling bag temperature be (Tβ- 90) carried out under conditions of DEG C Product are made annealing treatment, and natural cooling after insulation 75min, the ply rolling bag after then finished products are processed is sheared and opens bag, 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 rolling under 20 DEG C of room temperature conditions be to tensile strength 1250MPa, elongation percentage is 6%；Transverse tensile strength is 1280MPa, and elongation percentage is 5.5%；Stretching under the conditions of 650 DEG C is strong It is 870MPa to spend, and elongation percentage is 8%, and 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 macroscopical or microcosmic slight crack to exist between tissue.
Embodiment 2
The present embodiment processes Ti2The method of AlNb alloy wide sheets is comprised the following steps：
Step one, by size for 10mm (thickness) × 1200mm (width) × 1200mm (length) Ti2AlNb alloy slabs are placed in Temperature is (Tβ- 90) 15min is incubated in heating furnace DEG C, is then fed into hot-rolling mill carrying out the first rolling of 5 passages, described the One rolling is unidirection rolling, and the rolling speed 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 is 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 are put Carry out melting down benefit temperature in heating furnace, it is ensured that 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 5mm (thickness) × 1200mm (width) × 2400mm (length)；
Step 2, the first semi-finished product slab described in step one is switched in the width direction 2 block sizes for 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 Surface and the uniform coating thickness of lower surface are the inoxidzable coating 3 of 0.03mm~0.07mm, then by size be 5mm (thickness) × 4 Ti of coating inoxidzable coating 3 of 1200mm (width) × 600mm (length)2AlNb alloy sheets are stacked together to form alloy heap Pile, the middle part that then alloy stacking is placed between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated, overall sealing shape Into ply rolling bag, two stomatas are finally drilled with out 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, the ply rolling bag described in step 2 is placed in temperature for (Tβ- 40) 105min is incubated in heating furnace DEG C, It is then fed into hot-rolling mill carrying out the second rolling of 8 passages, the rolling direction of second rolling and the rolling side of the first rolling To identical, the rolling speed 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 is 80%；In second operation of rolling Middle use infrared radiation thermometer is monitored to the surface temperature of ply rolling bag, when temperature is less than (Tβ- 150) when DEG C, ply rolling bag is put Carry out melting down benefit temperature in heating furnace, it is ensured that the temperature of ply rolling bag is in (T in the operation of rollingβ- 150) DEG C~(Tβ-90)℃；Obtain Size is the ply rolling bag of 12mm (thickness) × 1300mm (width) × 3500mm (length)；
Step 4, in step 3 through second roll after ply rolling bag temperature be (Tβ- 120) carried out under conditions of DEG C Product are made annealing treatment, natural cooling in atmosphere after insulation 30min, and the ply rolling bag shearing after annealing then opened into bag, 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 rolling under 20 DEG C of room temperature conditions be to tensile strength 1295MPa, elongation percentage is 5%；Transverse tensile strength is 1267MPa, and elongation percentage is 5%；Tensile strength under the conditions of 650 DEG C It is 845MPa, elongation percentage is 6%, thickness deviation is no more than ± 0.1mm.
Embodiment 3
The present embodiment processes Ti2The method of AlNb alloy wide sheets is comprised the following steps：
Step one, by size for 13mm (thickness) × 1500mm (width) × 1500mm (length) Ti2AlNb alloy slabs are placed in Temperature is (Tβ- 60) 22.5min is incubated in heating furnace DEG C, is then fed into hot-rolling mill carrying out the first rolling of 5 passages, it is described First rolling is unidirection rolling, and the rolling speed 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 is 40%；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 placed in Carry out melting down benefit temperature in heating furnace, it is ensured that 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, the first semi-finished product slab described in step one is switched in the width direction 3 chip sizes for 7.8mm (thickness) × The Ti of 1500mm (width) × 833mm (length)2AlNb alloy semi-finished product slab 2, in every Ti2AlNb alloy semi-finished product slab 2 it is upper Surface and the uniform coating thickness of lower surface are the inoxidzable coating 3 of 0.03mm~0.07mm, then by size be 7.8mm (thickness) × 3 Ti of coating inoxidzable coating 3 of 1500mm (width) × 833mm (length)2AlNb alloy sheets are stacked together to form alloy heap Pile, the middle part that then alloy stacking is placed between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated, overall sealing shape Into ply rolling bag, two stomatas are finally drilled with out 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, the ply rolling bag described in step 2 is placed in temperature for (Tβ- 60) 120min is incubated in heating furnace DEG C, It is then fed into hot-rolling mill carrying out the second rolling of 7 passages, the rolling direction of second rolling and the rolling side of the first rolling To identical, keep rolling speed for 1.5m/s, each pass deformation is respectively 19.23%, 19.05%, 19.61%, 19.51%, 16.27%, 10.86%, 5.00%, total deformation is 70%；Infrared radiation thermometer is used in second operation of rolling Surface temperature to ply rolling bag is monitored, when temperature is less than (Tβ- 150) when DEG C, ply rolling bag is placed in heating furnace and is returned Stove mends temperature, it is ensured that the temperature of ply rolling bag is in (T in the operation of rollingβ- 150) DEG C~(Tβ-90)℃；Size is obtained for 19.02mm (thickness) The ply rolling bag of × 1600mm (width) × 3110mm (length)；
Step 4, in step 3 through second roll after ply rolling bag carry out finished products, concrete system is：It is in temperature (Tβ- 150) it is incubated under conditions of DEG C after 70min in air natural cooling, bag then is opened into the ply rolling bag 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 rolling under 20 DEG C of room temperature conditions be to tensile strength 1305MPa, elongation percentage is 6%；Transverse tensile strength is 1298MPa, and elongation percentage is 5.5%；Stretching under the conditions of 650 DEG C is strong It is 868MPa to spend, and elongation percentage is 6.5%.Thickness deviation is no more than ± 0.2mm.
Embodiment 4
The present embodiment processes Ti2The method of AlNb alloy wide sheets is comprised the following steps：
Step one, by size for 10mm (thickness) × 1000mm (width) × 1500mm (length) Ti2AlNb titanium alloy slabs are put In temperature be (Tβ- 50) 15min is incubated in heating furnace DEG C, is then fed into hot-rolling mill carrying out the first rolling of 4 passages, it is described First rolling is unidirection rolling, and it is 1.0m/s to keep rolling speed, and each pass deformation is respectively 10.00%, 8.89%, 8.54%, 6.67%, total deformation is 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 are placed in heating furnace and are returned Stove mends temperature, it is ensured that Ti in first operation of rolling2The temperature of AlNb alloy slabs is in (Tβ- 150) DEG C~(Tβ-90)℃；Obtain size It is the first semi-finished product slab of 7.0mm (thickness) × 1000mm (width) × 2142mm (length)；
Step 2, the first semi-finished product slab described in step one is switched in the width direction 3 chip sizes for 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 it is upper Surface and the uniform coating thickness of lower surface are the inoxidzable coating 3 of 0.03mm~0.07mm, then by size be 7.0mm (thickness) × 3 Ti of coating inoxidzable coating 3 of 1000mm (width) × 714mm (length)2AlNb alloy sheets are stacked together to form alloy heap Pile, the middle part that then alloy stacking is placed between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated, overall sealing shape Into ply rolling bag, two stomatas are finally drilled with out 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, the ply rolling bag described in step 2 is placed in temperature for (Tβ- 40) 100min is incubated in heating furnace DEG C, It is then fed into hot-rolling mill carrying out the second rolling of 6 passages, the rolling direction of second rolling and the rolling side of the first rolling To identical, keep rolling speed for 1.0m/s, each pass deformation is respectively 17.14%, 18.97%, 17.02%, 17.95%, 12.50%, 12.50%, total deformation is 65%；Using infrared radiation thermometer to ply rolling bag in second operation of rolling Surface temperature be monitored, when temperature be less than (Tβ- 150) when DEG C, ply rolling bag is placed in heating furnace to carry out melting down benefit temperature, protects The temperature of ply rolling bag is in (T in the card operation of rollingβ- 150) DEG C~(Tβ-90)℃；Size is obtained for 21.35mm (thickness) × 1100mm The ply rolling bag of (width) × 2325.7mm (length)；
Step 4, in step 3 through second roll after ply rolling bag carry out finished products, concrete system is：It is in temperature (Tβ- 130) it is incubated under conditions of DEG C after 90min in air natural cooling, bag then is opened into the ply rolling bag 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 are thin Plate.
The Ti processed using the present embodiment2AlNb light sheets rolling under 20 DEG C of room temperature conditions be to tensile strength 1268MPa, elongation percentage is 6.5%；Transverse tensile strength is 1279MPa, and elongation percentage is 6%；Stretching under the conditions of 650 DEG C is strong It is 852MPa to spend, and elongation percentage is 7%, and thickness deviation is no more than ± 0.2mm.
Embodiment 5
The present embodiment processes Ti2The method of AlNb alloy wide sheets is comprised the following steps：
Step one, by size for 10mm (thickness) × 1200mm (width) × 1500mm (length) Ti2AlNb titanium alloy slabs are put In temperature be (Tβ- 60) 15min is incubated in heating furnace DEG C, is then fed into hot-rolling mill carrying out the first rolling of 5 passages, it is described First rolling is unidirection rolling, and it is 1.0m/s to keep rolling speed, and each pass deformation is respectively 15.00%, 14.12%, 13.70%, 12.70%, 9.09%, total deformation is 50%；Using infrared radiation thermometer to Ti in first operation of rolling2AlNb The surface temperature of alloy slab is monitored, when temperature is less than (Tβ- 150) when DEG C, by Ti2AlNb alloy slabs are placed in heating furnace In melt down benefit temperature, it is ensured that 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, the first semi-finished product slab described in step one is switched in the width direction 4 chip sizes for 5.0mm (thickness) × The Ti of 1200mm (width) × 750mm (length)2AlNb alloy semi-finished product slab 2, in every Ti2AlNb alloy semi-finished product slab 2 it is upper Surface and the uniform coating thickness of lower surface are the inoxidzable coating 3 of 0.03mm~0.07mm, then by size be 5.0mm (thickness) × 4 Ti of coating inoxidzable coating 3 of 1200mm (width) × 750mm (length)2AlNb alloy sheets are stacked together to form alloy heap Pile, the middle part that then alloy stacking is placed between upper steel plate 1 and lower steel plate, and avris steel bar 4 is coated, overall sealing shape Into ply rolling bag, two stomatas are finally drilled with out 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, the ply rolling bag described in step 2 is placed in temperature for (Tβ- 90) 110min is incubated in heating furnace DEG C, It is then fed into hot-rolling mill carrying out the second rolling of 5 passages, the rolling direction of second rolling and the rolling side of the first rolling To identical, keep rolling speed for 1.0m/s, each pass deformation is respectively 16.00%, 14.29%, 13.89%, 12.90%, 7.41%, total deformation is 50%；Using infrared radiation thermometer to the surface temperature of ply rolling bag in second operation of rolling Degree is monitored, when temperature is less than (Tβ- 150) when DEG C, ply rolling bag is placed in heating furnace to carry out melting down benefit temperature, it is ensured that rolled The temperature of ply rolling bag is in (T in journeyβ- 150) DEG C~(Tβ-90)℃；Size is obtained for 30mm (thickness) × 1300mm (width) × 1700mm The ply rolling bag of (length)；
Step 4, in step 3 through second roll after ply rolling bag carry out finished products, concrete system is：It is in temperature (Tβ- 90) it is incubated under conditions of DEG C after 120min in air natural cooling, bag then is opened into the ply rolling bag 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 rolling under 20 DEG C of room temperature conditions be to tensile strength 1287MPa, elongation percentage is 6.0%；Transverse tensile strength is 1290MPa, and elongation percentage is 6.5%；Stretching under the conditions of 650 DEG C Intensity is 871MPa, and elongation percentage is 7%, and thickness deviation is no more than ± 0.2mm.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions.It is every according to invention skill Any simple modification, change and equivalence change that art is substantially made to above example, still fall within technical solution of the present invention Protection domain in.

Claims (7)

1. a kind of Ti2The processing method of AlNb alloy wide sheets, it is characterised in that the method is comprised the following steps：
Step one, by thickness for 10mm~16mm Ti2AlNb alloys slab is (T in temperatureβ- 90) DEG C~(Tβ- 30) DEG C plus 15min~30min is incubated in hot stove, is then fed into carrying out the first rolling in hot-rolling mill, obtain the first semi-finished product slab；Described One rolling is unidirection rolling, and the road number of times 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 speed of first rolling is 1m/s~2m/s； TβIt is Ti2The phase transition temperature of AlNb alloy slabs；
Step 2, the first semi-finished product slab described in step one is cut into 2~4 pieces of Ti in the width direction2AlNb alloy semi-finished product Slab (2), is then stacked together, and is fabricated to ply rolling bag；The Ti2The width of AlNb alloy semi-finished product slab (2) is 800mm~1500mm；
Step 3, ply rolling bag described in step 2 is placed in temperature for (Tβ- 90) DEG C~(Tβ- 30) it is incubated in heating furnace DEG C 90min~120min, is then fed into carrying out the second rolling, rolling direction and first rolling of second rolling in hot-rolling mill Rolling direction is identical, and the road number of times of second rolling is 5~8 passages, the pass deformation rate of second rolling for 5%~ 20%, the total deformation of second rolling is 50%~80%, and the rolling speed of second rolling is 1m/s~2m/s；
Step 4, in step 3 through second roll after ply rolling bag carry out finished products treatment, then finished products are processed Ply rolling bag shearing afterwards is unpacked, the Ti after unpacking2After AlNb alloys wide sheet is through smoothing, sanding and cutting, obtaining thickness is 1mm~4mm, width is the Ti of 800mm~1500mm2AlNb lattens；The Ti under 20 DEG C of room temperature conditions2AlNb alloys Rolling for thin plate is not less than 1200MPa to tensile strength, and elongation percentage is not less than 5%；The Ti under 650 DEG C of hot conditions2AlNb The tensile strength of alloy wide sheet 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 lattens, it is characterised in that described in step 2 The manufacturing process of ply rolling bag is：First in the Ti2The upper and lower surface of AlNb alloy semi-finished product slab (2) is uniformly coated Thickness is the inoxidzable coating (3) of 0.03mm~0.07mm, is then coated with the Ti of inoxidzable coating2AlNb alloy semi-finished product Slab (2) is stacked together to form alloy stacking, and alloy stacking then is placed in into middle part of the upper steel plate (1) and lower steel plate between, And avris is coated with steel bar (4), last entirety sealing forms ply rolling bag.
3. a kind of Ti according to claim 22The processing method of AlNb lattens, it is characterised in that the upper steel plate And the thickness of lower steel plate is 16mm~20mm (1).
4. a kind of Ti according to claim 22The processing method of AlNb lattens, it is characterised in that the upper steel plate (1) width compares Ti2AlNb alloy semi-finished product slab (2) width 100mm wide, the length of the upper steel plate (1) compares Ti2AlNb is closed Golden semi-finished product slab (2) length 100mm long.
5. a kind of Ti according to claim 22The processing method of AlNb lattens, it is characterised in that the ply rolling bag hangs down It is straight in offering two stomatas 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 lattens, it is characterised in that step one and step The finishing temperature rolled described in three is not less than (Tβ-150)℃。
7. a kind of Ti according to claim 12The processing method of AlNb lattens, it is characterised in that described in step 4 The temperature of finished products treatment is (Tβ- 150) DEG C~(Tβ- 90) DEG C, the time 0.5h~2h of the finished products treatment, described The type of cooling of finished products treatment is air cooling.
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CN107470358A (en) * 2017-10-11 2017-12-15 宝鸡市永盛泰钛业有限公司 A kind of processing method of titanium-alloy thin-plate
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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CN117385304A (en) * 2023-09-18 2024-01-12 北京钢研高纳科技股份有限公司 Low anisotropic powder Ti 2 AlNb alloy fine-grain thin plate and preparation method and application thereof

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