CN101011706A - Method for composite preparation of Ti alloy/TiAl alloy composite plate material by using laminated rolling-diffusion method - Google Patents
Method for composite preparation of Ti alloy/TiAl alloy composite plate material by using laminated rolling-diffusion method Download PDFInfo
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Abstract
The invention discloses a making method of titanium alloy/TiAl composite board, which is characterized by the following: overlapping A (titanium foil) and C (aluminium foil); placing at least one layer B (titanium or titanium alloy foil, titanium or titanium alloy board) on the upper and lower surfaces of overlapped layer or among overlapping layer; setting adjacent layer C to B; adopting three layers or more of A or B as the most outer layer; jacketing; rolling under 20-750 deg.c and 750-1300 deg.c.
Description
Technical field
The present invention relates to a kind of method for preparing titanium alloy/TiAl alloy composite plate material.
Background technology
TiAl alloy (or TiAl intermetallic compound) has low, the high specific strength of density and compares elastic modelling quantity, when high temperature, still can keep sufficiently high strength and stiffness, it also has outstanding characteristics such as good creep resistant and oxidation resistance simultaneously, is with a wide range of applications in fields such as space flight, aviation and automobiles.The serviceability temperature of TiAl alloy can reach 700～900 ℃.The TiAl sheet alloy is the material of being badly in need of the most in this kind material practicability process, but shortcomings such as TiAl sheet alloy temperature-room type plasticity is low, poor processability have seriously hindered the application of sheet material.Number of patent application is 200510009906.0, publication number is CN1672918A, open day is on September 28th, 2005, name is called the application for a patent for invention of " a kind of TiAl intermetallic compound～titanium alloy composite board and preparation method thereof ", a kind of preparation method of TiAl alloy composite plate material is disclosed, this patent application is that to adopt original material be that TiAl alloy cube matherial and titanium alloy carry out composite rolling and obtain composite board, but because the TiAl alloy plasticity is lower, poor processability adopts this patent to prepare large-sized titanium alloy/TiAl alloy composite sheet material and be easy to generate crackle in the operation of rolling.Therefore this kind method is not easy to obtain thin thickness, sheet material that size is big, and the sheet metal thickness that this method obtains is generally greater than 0.5mm, and size is less than 500 * 500mm.
Summary of the invention
The objective of the invention is to obtain for solving prior art that size is big, the problem of the titanium alloy/TiAl alloy composite plate material of thin thickness, provide a kind of laminated rolling-diffusion the compound method for preparing titanium alloy/TiAl alloy composite plate material.The present invention has avoided that the TiAl alloy plasticity is lower, the technological deficiency of poor processability, adopt titanium foil and the aluminium foil reaction preferably of plasticity and processing characteristics to generate the method for TiAl intermetallic compound, can prepare large-sized titanium alloy/TiAl alloy composite sheet material, and titanium alloy of the present invention/TiAl alloy composite plate material, preparation method technology is simple, preparation cost is lower, can improve that TiAl sheet alloy temperature-room type plasticity is low, the shortcoming of poor processability.The present invention can be used to prepare large-sized titanium alloy/TiAl alloy composite plate material, compares with the TiAl sheet alloy of same process preparation, and the comprehensive mechanical property of titanium alloy/TiAl alloy composite plate material can be significantly improved.Technical scheme of the present invention realizes according to the following steps: one, prepare original material: original material is titanium foil (hereinafter to be referred as A), titanium (or titanium alloy) paper tinsel or sheet material (hereinafter to be referred as B), aluminium foil (hereinafter to be referred as C), the thickness of A is 0.02-0.3mm, the thickness of B is 0.31-3mm, and the thickness of C is 0.02-0.3mm; Two, lamination: A and C lamination are placed, one deck B at least in the lamination, and B or on the upper and lower surface of lamination perhaps is placed in the middle of the lamination; In the lamination, the adjacent layer of B is C, and outermost layer is A or B, and it is more than 3 layers or 3 layers that A, B and C stack the number of plies; Three, jacket: lamination adopts stainless steel, pure titanium or titanium alloy jacket outward, and lamination is put into the cube container that is welded into by stainless steel, pure titanium or titanium alloy sheet, through vacuumizing the vacuum that makes in the cube container less than 1Pa, welds airtight then; Four, rolling: through the integral material of jacket, process is 20-750 ℃ of zerolling earlier, integral material is put into heating furnace be heated to 20-750 ℃, and be incubated 5-40 minute, put into the milling train open rolling then rapidly, pass deformation is 2-20%, melts down between passage 2-25 minute, and rolling total deformation is 30-70%; Pass through 750-1300 ℃ of high temperature rolling again, integral material is put into heating furnace be heated to 750-1300 ℃, and be incubated 5-40 minute, put into the milling train open rolling then rapidly, pass deformation is 2-20%, melts down between passage 2-25 minute, and rolling total deformation is 30-80%, rolling back integral material cools to 400-600 ℃ with the furnace at 750-1300 ℃, and air cooling is to room temperature again; Five, jacket is removed: adopt mach method to remove jacket, obtain titanium alloy/TiAl alloy composite plate material.Compared with prior art, titanium alloy of the present invention/TiAl alloy composite plate material, preparation method technology is simple, preparation cost is lower, and it is lower to have avoided the TiAl alloy plasticity, the technological deficiency of poor processability, adopt titanium foil and the aluminium foil reaction preferably of plasticity and processing characteristics to generate the method for TiAl intermetallic compound, and then obtain composite board, so titanium alloy/TiAl alloy composite plate material thickness that the present invention obtains can be controlled arbitrarily, minimum thickness can reach 0.2mm, and the size of composite board depends on the size of original titanium foil and aluminium foil fully, final board dimension maximum can reach 1000 * 2000mm, can prepare large-sized titanium alloy/TiAl alloy composite sheet material.
Description of drawings
Fig. 1 is the structural representation that B of the present invention is located at stack surface, Fig. 2 is that B of the present invention is located at the middle structural representation of lamination, Fig. 3 is the structural representation that is provided with two-layer B in the lamination of the present invention, Fig. 4 is the structural representation of Ti/TiAl alloy composite plate material, Fig. 5 is the structural representation of titanium alloy/TiAl alloy composite plate material, in the above accompanying drawing, Reference numeral 1 is titanium foil (being called for short A), the 2nd, titanium (or titanium alloy) paper tinsel or sheet material (being called for short B), the 3rd, aluminium foil (being called for short C), the 4th, jacket, the 5th, titanium alloy, the 6th, TiAl alloy, the 7th, titanium.
The specific embodiment
The specific embodiment one: the technical scheme of (referring to Fig. 1, Fig. 2, Fig. 3) present embodiment realizes according to the following steps: one, prepare original material: original material is titanium foil (hereinafter to be referred as A), titanium (or titanium alloy) paper tinsel or sheet material (hereinafter to be referred as B), aluminium foil (hereinafter to be referred as C), the thickness of A is 0.02-0.3mm, the thickness of B is 0.31-3mm, and the thickness of C is 0.02-0.3mm; Two, lamination: A and C lamination are placed, one deck B at least in the lamination, and B or on the upper and lower surface of lamination perhaps is placed in the middle of the lamination; In the lamination, the adjacent layer of B is C, and outermost layer is A or B, and it is more than 3 layers or 3 layers that A, B and C stack the number of plies; Three, jacket: lamination adopts stainless steel, pure titanium or titanium alloy jacket outward, and lamination is put into the cube container that is welded into by stainless steel, pure titanium or titanium alloy sheet, through vacuumizing the vacuum that makes in the cube container less than 1Pa, welds airtight then; Four, rolling: through the integral material of jacket, process is 20-750 ℃ of zerolling earlier, integral material is put into heating furnace be heated to 20-750 ℃, and be incubated 5-40 minute, put into the milling train open rolling then rapidly, pass deformation is 2-20%, melts down between passage 2-25 minute, and rolling total deformation is 30-70%; Pass through 750-1300 ℃ of high temperature rolling again, integral material is put into heating furnace be heated to 750-1300 ℃, and be incubated 5-40 minute, put into the milling train open rolling then rapidly, pass deformation is 2-20%, melts down between passage 2-25 minute, and rolling total deformation is 30-80%, rolling back integral material cools to 400-600 ℃ with the furnace at 750-1300 ℃, and air cooling is to room temperature again; Five, jacket is removed: adopt mach method to remove jacket, obtain titanium alloy/TiAl alloy composite plate material.
The specific embodiment two: the technical scheme of (referring to Fig. 1, Fig. 4) present embodiment is achieved in that the preparation original material: original material is titanium foil (being called for short A), titanium sheet material (being called for short B), aluminium foil (being called for short C).The thickness of A is 0.05mm, and the thickness of B is 1mm, and the thickness of C is 0.05mm.Lamination: A and C lamination are placed, and A and C are respectively 5 layers.B is one deck, and B is placed on the lower surface of A and C lamination.In the lamination, the adjacent layer of B is C, and the outermost layer upper surface is A.The laminated construction of said structure and Fig. 1 is close.Jacket: lamination adopts the stainless steel jacket outward, and jacket thickness is 2mm.The cube container that is welded into by corrosion resistant plate put in laminated construction,, weld airtight then through being evacuated down to less than below the 0.2Pa.Rolling: as, through rolling, integral material to be put into the milling train open rolling in room temperature earlier at 25 ℃ of low temperature (room temperature) through the integral material of jacket.Pass deformation is 20%, and rolling total deformation is 50%.Through 950 ℃ of high temperature rollings, integral material is put into heating furnace be heated to 950 ℃, and be incubated 25 minutes again, put into the milling train open rolling then rapidly.Pass deformation is 10%, melts down between passage 10 minutes, and rolling total deformation is 40%.Rolling back integral material cools to 400 ℃ with the furnace at 950 ℃, and air cooling is to room temperature again.A and C form the TiAl alloy through Elements Diffusion, reaction in the operation of rolling, and the bigger B of TiAl alloy and the thickness that does not react completely is compound.Remove jacket through machined after rolling, obtain Ti/TiAl alloy composite plate material, this sheet material is made of one deck Ti and one deck TiAl alloy.
The specific embodiment three: the technical scheme of (referring to Fig. 3, Fig. 5) present embodiment is achieved in that the preparation original material: original material is titanium foil (being called for short A), titanium alloy (Ti-6Al-4V) sheet material (being called for short B), aluminium foil (being called for short C).The thickness of A is 0.07mm, and the thickness of B is 1.5mm, and the thickness of C is 0.07mm.Lamination: A and C lamination are placed, and A and C are respectively 8 layers and 7 layers.B is 2 layers, and 1 layer of B is placed on the lower surface of A and C lamination, in addition 1 layer of centre that is placed on A and C lamination.In the lamination, the adjacent layer of B is C, and the outermost layer upper surface is A.The laminated construction of said structure and Fig. 3 is close.Jacket: lamination adopts pure titanium jacket outward, and jacket thickness is 2.5mm.Lamination put into by pure titanium plate be welded into the cube container,, weld airtight then through being evacuated down to less than below the 0.1Pa.Rolling: as through the integral material of jacket, through 550 ℃ of zerollings, integral material to be put into heating furnace be heated to 550 ℃, and be incubated 30 minutes earlier, put into the milling train open rolling then rapidly.Pass deformation is 8%, melts down between passage 15 minutes, and rolling total deformation is 60%.Through 1000 ℃ of high temperature rollings, integral material is put into heating furnace be heated to 1000 ℃, and be incubated 30 minutes again, put into the milling train open rolling then rapidly.Pass deformation is 10%, melts down between passage 15 minutes, and rolling total deformation is 50%.Rolling back integral material cools to 500 ℃ with the furnace at 1000 ℃, and air cooling is to room temperature again.A and C form the TiAl alloy through Elements Diffusion, reaction in the operation of rolling, and the bigger B of TiAl alloy and the thickness that does not react completely is compound.Remove jacket through machined after rolling, obtain titanium alloy/TiAl alloy composite plate material, this sheet material contains two-layer titanium alloy, and all the other are the TiAl alloy.
Claims (10)
1, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling-diffusion, it is characterized in that the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling-diffusion realizes according to the following steps: one, prepare original material: original material is a titanium foil: hereinafter to be referred as A, titanium or titanium alloy paper tinsel, titanium or titanium alloy plate: hereinafter to be referred as B, aluminium foil: hereinafter to be referred as C, the thickness of A is 0.02-0.3mm, the thickness of B is 0.31-3mm, and the thickness of C is 0.02-0.3mm; Two, lamination: A and C lamination are placed, one deck B at least in the lamination, and B or on the upper and lower surface of lamination perhaps is placed in the middle of the lamination; In the lamination, the adjacent layer of B is C, and outermost layer is A or B, and it is more than 3 layers or 3 layers that A, B and C stack the number of plies; Three, jacket: lamination adopts stainless steel, pure titanium or titanium alloy jacket outward, and lamination is put into the cube container that is welded into by stainless steel, pure titanium or titanium alloy sheet, through vacuumizing the vacuum that makes in the cube container less than 1Pa, welds airtight then; Four, rolling: through the integral material of jacket, process is 20-750 ℃ of zerolling earlier, integral material is put into heating furnace be heated to 20-750 ℃, and be incubated 5-40 minute, put into the milling train open rolling then rapidly, pass deformation is 2-20%, melts down between passage 2-25 minute, and rolling total deformation is 30-70%; Pass through 750-1300 ℃ of high temperature rolling again, integral material is put into heating furnace be heated to 750-1300 ℃, and be incubated 5-40 minute, put into the milling train open rolling then rapidly, pass deformation is 2-20%, melts down between passage 2-25 minute, and rolling total deformation is 30-80%, rolling back integral material cools to 400-600 ℃ with the furnace at 750-1300 ℃, and air cooling is to room temperature again; Five, jacket is removed: adopt mach method to remove jacket, obtain titanium alloy/TiAl alloy composite plate material.
2, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion, the thickness that it is characterized in that A is 0.05mm, and the thickness of B is 1mm, and the thickness of C is 0.05mm.
3, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion, the thickness that it is characterized in that A is 0.07mm, and the thickness of B is 1.5mm, and the thickness of C is 0.07mm.
4, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion, it is characterized in that in the laminating step, A and C lamination are placed, A and C are respectively 5 layers, B is one deck, and B is placed on the lower surface of A and C lamination, in the lamination, the adjacent layer of B is C, and the outermost layer upper surface is A.
5, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion, it is characterized in that in the laminating step, A and C lamination are placed, A and C are respectively 8 layers and 7 layers, and B is 2 layers, and 1 layer of B is placed on the lower surface of A and C lamination, 1 layer of centre that is placed on A and C lamination in addition, in the lamination, the adjacent layer of B is C, and the outermost layer upper surface is A.
6, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion is characterized in that in the rolling step that pass deformation is 20%, and rolling total deformation is 50%.
7, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion is characterized in that in the rolling step, pass deformation is 10%, melts down between passage 10 minutes, and rolling total deformation is 40%.
8, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion is characterized in that in the rolling step, pass deformation is 8%, melts down between passage 15 minutes, and rolling total deformation is 60%.
9, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion is characterized in that in the rolling step, pass deformation is 10%, melts down between passage 15 minutes, and rolling total deformation is 50%.
10, the compound method for preparing titanium alloy/TiAl alloy composite plate material of laminated rolling according to claim 1-diffusion is characterized in that rolling back integral material cools to 500 ℃ with the furnace at 1000 ℃, and air cooling is to room temperature again.
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