CN103695709B - Titanium-based alloy plate and preparation method thereof - Google Patents

Titanium-based alloy plate and preparation method thereof Download PDF

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CN103695709B
CN103695709B CN201410018634.XA CN201410018634A CN103695709B CN 103695709 B CN103695709 B CN 103695709B CN 201410018634 A CN201410018634 A CN 201410018634A CN 103695709 B CN103695709 B CN 103695709B
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sheet
alloy
parts
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titanium
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CN103695709A (en
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陆骏
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江苏万宝桥梁构件有限公司
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Abstract

The invention discloses a preparation method of a titanium-based alloy plate, which is characterized in that the alloy comprises the following components in percentage by mass: 8-9% of Ni, 1-2% of Al, 0.7-0.8% of Zn, 0.4-0.5% of Nb, 0.6-0.7% of V, 0.3-0.4% of Mo, 0.6-0.7% of Bi, 0.1-0.2% of Mg, 0.7-0.8% of Si, 0.1-0.2% of Sn, 0.07-0.08% of Co, 0.04-0.05% of Cr, 0.02-0.03% of Ta, 0.07-0.08% of Ca, 0.05-0.06% of Y and the balance of titanium and unavoidable nonmetal impurities. The structural uniformity of the titanium alloy plate is easy to control, the advantages of the low-gap titanium alloy in performance can be sufficiently developed, and the processed material has good strength, toughness and plastic matching.

Description

A kind of titanium base alloy sheet material and preparation method thereof

Technical field

The present invention relates to a kind of titanium base alloy sheet material and preparation method thereof, belong to titanium base alloy and manufacture field.

Background technology

Ti-6Al-4V be use the most extensively, the most ripe typical (alpha+beta) diphasic titanium alloy, nearly 40 years of the history that various countries research and develop in succession also has respective alloy designations.Its compositional characteristic is: alloying element allowable fluctuation range wider (Al:5.5%-6.75%), and impurity allows content higher (Fe:0.3%max, O:0.2%max, H:0.015%max); Thus bring higher metallurgical imperfection possibility, lower plasticity and toughness and shorter work-ing life.For this reason, minority developed country headed by American and Britain developed corresponding low gap alloy at nearly 20 years again, as U.S. UNS R56401, ASTM F468, Grade 23, AMS4930, Ti-64ELI, Britain IMI318ELI, France TA6VELI etc., are widely used in the key areas such as low temperature, medical treatment, naval vessel and aircraft.Its compositional characteristic is: alloying element allowable fluctuation range narrower (Al:5.5% ~ 6.5%), and impurity allows content lower (Fe:0.25%max, O:0.13%max, H:0.0125%); Thus bring less metallurgical imperfection possibility, higher plasticity and toughness, preferably welding property and longer work-ing life.Improve nearly one times than the K1C of Ti-6Al-4V alloy, da/dN reduces and reach an order of magnitude, be now applied on advanced air fighter and civil aircraft of new generation.Such as, the U.S. by Ti-6Al-4V and Ti-6Al-4V ELI Alloyapplication in the tailplane rotating shaft of F-16 air fighter, the number one cab windshield window skeleton of Boeing-767 and main rotor, the tail rotor rotatable parts of the vertiplane such as UH60A " blackhawk ", SH60B " Hai Ying ", CH53E " supper variety horse ".The large-scale stamp work of supporting beam (heavy 1545kg, long 6.2m, wide 0.95m, shadow area 4.06m2) of the main landing gear of civil aircraft Boeing-747, started from 1969 to produce until nowadays still in supply.Nowadays, Ti-6Al-4V (Ti-6Al-4V ELI) the titanium alloy application of U.S. forth generation opportunity of combat F22, F/A-18E/F etc. has entered the ripe application stage adopting larger non-detachable mold forging, as in F22 air fighter part, titanium alloy accounts for 41% of aircraft weight, wherein Ti-6Al-4V ELI accounts for again 87.5% of titanium alloy weight.Wherein F-22 rear body monoblock type bulkhead (heavy 1590kg, long 3.8m, wide 1.7m, shadow area 5.53m2) is titanium alloy closed mould forging maximum in the world at present.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, a kind of easy to operate, titanium base alloy preparation of plates method that process controllability is strong is provided.The coupling of intensity, fracture toughness property and plasticity that this technique can make titanium alloy plate keep good, plate property lot stability improves.

For achieving the above object, the technical solution used in the present invention is as follows:

A kind of titanium base alloy preparation of plates method, it is characterized in that: each constituent mass percentage composition of described alloy is: Ni 8-9%, Al 1-2%, Zn 0.7-0.8%, Nb 0.4-0.5%, V 0.6-0.7%, Mo 0.3-0.4%, Bi 0.6-0.7%, Mg 0.1-0.2%, Si 0.7-0.8%, Sn 0.1-0.2%, Co 0.07-0.08%, Cr 0.04-0.05%, Ta 0.02-0.03%, Ca 0.07-0.08%, Y 0.05-0.06%, surplus is titanium and inevitable nonmetal inclusion

Said method comprising the steps of:

(1) carry out preparing burden and batch mixing according to titanium base alloy component, and be pressed into block type electrode, adopt vacuum consumable electrode arc furnace to carry out melting, then cast alloy cast ingot,

(2) carry out homogenizing annealing process to above-mentioned alloy cast ingot, first alloy cast ingot is heated to 1030 DEG C, soaking time is 16 hours; After be cooled to 900 DEG C, soaking time is 6 hours; Afterwards with 100 DEG C/h of slow coolings to room temperature.

(3) to above-mentioned carry out homogenizing annealing after alloy cast ingot forge, initial forging temperature is 930 DEG C, final forging temperature is 890 DEG C, forging after alloy cast ingot at 850 DEG C, be incubated 6 hours;

(4) alloy cast ingot after forging is carried out hot rolling, hot-rolled temperature 850 DEG C, pass deformation 15%, total deformation is greater than 70%, and after hot rolling, air cooling is to room temperature, carries out stress relief annealing 740 DEG C afterwards to sheet material, is incubated 8 hours,

(5) cold rolling: the oxide film of plate surface after first removing hot rolling, then the cold rolling thickness of sheet material that makes of the first passage is carried out to sheet material and reduce 6%, process annealing process is carried out to the sheet material after cold rolling, intermediate anneal temperature is 600 DEG C, the process annealing time is insulation 6 hours, the cold rolling thickness of sheet material that makes is carried out again to the sheet material after annealing and reduces 6%, repeat process annealing and cold rolling step, until make sheet material meet the requirements of size;

(6) quench treatment is carried out to sheet material, sheet material is reached quenching temperature 940 DEG C with the temperature rise rate of 120 DEG C/h and carries out Water Quenching;

(7) sheet material after quenching is heated to 470 DEG C, is incubated 9 hours, be then cooled to 390 DEG C of insulations 5 hours,

(8) after thermal treatment, plate surface is processed, first many ribs type 250 order emergy is selected to carry out surface coarsening process, adopt alkaline hydrated oxide 83% again, sequestrant 6%, ethylene glycol 4%, nickelous chloride 1%, ammonium chloride 1%, the hot solution of the surface active agent composition of trihydroxybenzene 5% carries out activation treatment to the titanium alloy plate surface after processing, carries out hot spraying WC system sintering metal to the sheet material after activation; WC system cermet particles size is 400 μm, and make WC system sintering metal be deposited as wear-resistant coating on sheet material by spray gun, WC system cermet composition is: WC 23-24 part, Ni 11-15 part, Fe 5 parts, Mo 5-6 part, Zn 3-4 part,

(9) after plate surface processes, sheet material is heated to 870 DEG C, is incubated 4 hours, be then cooled to 430 DEG C of insulations 7 hours with 80 DEG C/h, be cooled to 280 DEG C of insulations 6 hours with 15 DEG C/h again, after cool to room temperature with the furnace and obtain final titanium alloy plate.

As preferably, described titanium base alloy preparation of plates method, each constituent mass percentage composition of described alloy is: Ni 8%, Al 1%, Zn 0.7%, Nb 0.4%, V 0.6%, Mo 0.3%, Bi 0.6%, Mg 0.1%, Si 0.7%, Sn 0.1%, Co 0.07%, Cr 0.04%, Ta 0.02%, Ca 0.07%, Y 0.05%, surplus is titanium and inevitable nonmetal inclusion.

As preferably, described titanium base alloy preparation of plates method, each constituent mass percentage composition of described alloy is: Ni 9%, Al 2%, Zn 0.8%, Nb 0.5%, V 0.7%, Mo 0.4%, Bi 0.7%, Mg 0.2%, Si 0.8%, Sn 0.2%, Co 0.08%, Cr 0.05%, Ta 0.03%, Ca 0.08%, Y 0.06%, surplus is titanium and inevitable nonmetal inclusion.

As preferably, described titanium base alloy preparation of plates method, each constituent mass percentage composition of described alloy is: Ni 8.5%, Al 1.5%, Zn 0.75%, Nb 0.45%, V 0.65%, Mo 0.35%, Bi 0.65%, Mg 0.15%, Si 0.75%, Sn 0.15%, Co 0.075%, Cr 0.045%, Ta 0.025%, Ca 0.075%, Y 0.055%, surplus is titanium and inevitable nonmetal inclusion.

As preferably, described titanium base alloy preparation of plates method, each constituent mass percentage composition of described alloy is: Ni 8.3%, Al 1.2%, Zn 0.73%, Nb 0.47%, V 0.68%, Mo 0.39%, Bi 0.64%, Mg 0.16%, Si 0.73%, Sn 0.16%, Co 0.078%, Cr 0.044%, Ta 0.023%, Ca 0.077%, Y 0.056%, surplus is titanium and inevitable nonmetal inclusion.

As preferably, described titanium base alloy preparation of plates method, WC system cermet composition is: WC 23 parts, Ni 11 parts, Fe 5 parts, Mo 5 parts, Zn 3 parts.

As preferably, described titanium base alloy preparation of plates method, WC system cermet composition is: WC 24 parts, Ni 15 parts, Fe 5 parts, Mo 6 parts, Zn 4 parts.

As preferably, described titanium base alloy preparation of plates method, WC system cermet composition is: WC 23.5 parts, Ni 13 parts, Fe 5 parts, Mo 5.5 parts, Zn 3.5 parts.

Compared with prior art, the present invention has following beneficial effect:

Process window of the present invention is wider, and homogeneity of structure easily controls, and can give full play to the performance advantage of low gap titanium alloy, and the strength of materials of processing, toughness and plasticity coupling is good, and the lot stability of plate property is improved.Intensity touches the mark requirement, and intensity reaches more than 1200MPa.

Embodiment

Embodiment 1:

A kind of titanium base alloy preparation of plates method is provided, it is characterized in that: each constituent mass percentage composition of described alloy is: Ni 8%, Al 1%, Zn 0.7%, Nb 0.4%, V 0.6%, Mo 0.3%, Bi 0.6%, Mg 0.1%, Si 0.7%, Sn 0.1%, Co 0.07%, Cr 0.04%, Ta 0.02%, Ca 0.07%, Y 0.05%, surplus is titanium and inevitable nonmetal inclusion

Said method comprising the steps of:

(1) carry out preparing burden and batch mixing according to titanium base alloy component, and be pressed into block type electrode, adopt vacuum consumable electrode arc furnace to carry out melting, then cast alloy cast ingot,

(2) carry out homogenizing annealing process to above-mentioned alloy cast ingot, first alloy cast ingot is heated to 1030 DEG C, soaking time is 16 hours; After be cooled to 900 DEG C, soaking time is 6 hours; Afterwards with 100 DEG C/h of slow coolings to room temperature.

(3) to above-mentioned carry out homogenizing annealing after alloy cast ingot forge, initial forging temperature is 930 DEG C, final forging temperature is 890 DEG C, forging after alloy cast ingot at 850 DEG C, be incubated 6 hours;

(4) alloy cast ingot after forging is carried out hot rolling, hot-rolled temperature 850 DEG C, pass deformation 15%, total deformation is greater than 70%, and after hot rolling, air cooling is to room temperature, carries out stress relief annealing 740 DEG C afterwards to sheet material, is incubated 8 hours,

(5) cold rolling: the oxide film of plate surface after first removing hot rolling, then the cold rolling thickness of sheet material that makes of the first passage is carried out to sheet material and reduce 6%, process annealing process is carried out to the sheet material after cold rolling, intermediate anneal temperature is 600 DEG C, the process annealing time is insulation 6 hours, the cold rolling thickness of sheet material that makes is carried out again to the sheet material after annealing and reduces 6%, repeat process annealing and cold rolling step, until make sheet material meet the requirements of size;

(6) quench treatment is carried out to sheet material, sheet material is reached quenching temperature 940 DEG C with the temperature rise rate of 120 DEG C/h and carries out Water Quenching;

(7) sheet material after quenching is heated to 470 DEG C, is incubated 9 hours, be then cooled to 390 DEG C of insulations 5 hours,

(8) after thermal treatment, plate surface is processed, first many ribs type 250 order emergy is selected to carry out surface coarsening process, adopt alkaline hydrated oxide 83% again, sequestrant 6%, ethylene glycol 4%, nickelous chloride 1%, ammonium chloride 1%, the hot solution of the surface active agent composition of trihydroxybenzene 5% carries out activation treatment to the titanium alloy plate surface after processing, carries out hot spraying WC system sintering metal to the sheet material after activation; WC system cermet particles size is 400 μm, and make WC system sintering metal be deposited as wear-resistant coating on sheet material by spray gun, WC system cermet composition is: WC 23 parts, Ni 11 parts, Fe 5 parts, Mo 5 parts, Zn 3 parts,

(9) after plate surface processes, sheet material is heated to 870 DEG C, is incubated 4 hours, be then cooled to 430 DEG C of insulations 7 hours with 80 DEG C/h, be cooled to 280 DEG C of insulations 6 hours with 15 DEG C/h again, after cool to room temperature with the furnace and obtain final titanium alloy plate.

Embodiment 2:

A kind of titanium base alloy preparation of plates method is provided, it is characterized in that: each constituent mass percentage composition of described alloy is: Ni 9%, Al 2%, Zn 0.8%, Nb 0.5%, V 0.7%, Mo 0.4%, Bi 0.7%, Mg 0.2%, Si 0.8%, Sn 0.2%, Co 0.08%, Cr 0.05%, Ta 0.03%, Ca 0.08%, Y 0.06%, surplus is titanium and inevitable nonmetal inclusion

Said method comprising the steps of:

(1) carry out preparing burden and batch mixing according to titanium base alloy component, and be pressed into block type electrode, adopt vacuum consumable electrode arc furnace to carry out melting, then cast alloy cast ingot,

(2) carry out homogenizing annealing process to above-mentioned alloy cast ingot, first alloy cast ingot is heated to 1030 DEG C, soaking time is 16 hours; After be cooled to 900 DEG C, soaking time is 6 hours; Afterwards with 100 DEG C/h of slow coolings to room temperature.

(3) to above-mentioned carry out homogenizing annealing after alloy cast ingot forge, initial forging temperature is 930 DEG C, final forging temperature is 890 DEG C, forging after alloy cast ingot at 850 DEG C, be incubated 6 hours;

(4) alloy cast ingot after forging is carried out hot rolling, hot-rolled temperature 850 DEG C, pass deformation 15%, total deformation is greater than 70%, and after hot rolling, air cooling is to room temperature, carries out stress relief annealing 740 DEG C afterwards to sheet material, is incubated 8 hours,

(5) cold rolling: the oxide film of plate surface after first removing hot rolling, then the cold rolling thickness of sheet material that makes of the first passage is carried out to sheet material and reduce 6%, process annealing process is carried out to the sheet material after cold rolling, intermediate anneal temperature is 600 DEG C, the process annealing time is insulation 6 hours, the cold rolling thickness of sheet material that makes is carried out again to the sheet material after annealing and reduces 6%, repeat process annealing and cold rolling step, until make sheet material meet the requirements of size;

(6) quench treatment is carried out to sheet material, sheet material is reached quenching temperature 940 DEG C with the temperature rise rate of 120 DEG C/h and carries out Water Quenching;

(7) sheet material after quenching is heated to 470 DEG C, is incubated 9 hours, be then cooled to 390 DEG C of insulations 5 hours,

(8) after thermal treatment, plate surface is processed, first many ribs type 250 order emergy is selected to carry out surface coarsening process, adopt alkaline hydrated oxide 83% again, sequestrant 6%, ethylene glycol 4%, nickelous chloride 1%, ammonium chloride 1%, the hot solution of the surface active agent composition of trihydroxybenzene 5% carries out activation treatment to the titanium alloy plate surface after processing, carries out hot spraying WC system sintering metal to the sheet material after activation; WC system cermet particles size is 400 μm, and make WC system sintering metal be deposited as wear-resistant coating on sheet material by spray gun, WC system cermet composition is: WC 24 parts, Ni 15 parts, Fe 5 parts, Mo 6 parts, Zn 4 parts,

(9) after plate surface processes, sheet material is heated to 870 DEG C, is incubated 4 hours, be then cooled to 430 DEG C of insulations 7 hours with 80 DEG C/h, be cooled to 280 DEG C of insulations 6 hours with 15 DEG C/h again, after cool to room temperature with the furnace and obtain final titanium alloy plate.

Embodiment 3:

A kind of titanium base alloy preparation of plates method is provided, it is characterized in that: each constituent mass percentage composition of described alloy is: Ni 8.5%, Al 1.5%, Zn 0.75%, Nb 0.45%, V 0.65%, Mo 0.35%, Bi 0.65%, Mg 0.15%, Si 0.75%, Sn 0.15%, Co 0.075%, Cr 0.045%, Ta 0.025%, Ca 0.075%, Y 0.055%, surplus is titanium and inevitable nonmetal inclusion

Said method comprising the steps of:

(1) carry out preparing burden and batch mixing according to titanium base alloy component, and be pressed into block type electrode, adopt vacuum consumable electrode arc furnace to carry out melting, then cast alloy cast ingot,

(2) carry out homogenizing annealing process to above-mentioned alloy cast ingot, first alloy cast ingot is heated to 1030 DEG C, soaking time is 16 hours; After be cooled to 900 DEG C, soaking time is 6 hours; Afterwards with 100 DEG C/h of slow coolings to room temperature.

(3) to above-mentioned carry out homogenizing annealing after alloy cast ingot forge, initial forging temperature is 930 DEG C, final forging temperature is 890 DEG C, forging after alloy cast ingot at 850 DEG C, be incubated 6 hours;

(4) alloy cast ingot after forging is carried out hot rolling, hot-rolled temperature 850 DEG C, pass deformation 15%, total deformation is greater than 70%, and after hot rolling, air cooling is to room temperature, carries out stress relief annealing 740 DEG C afterwards to sheet material, is incubated 8 hours,

(5) cold rolling: the oxide film of plate surface after first removing hot rolling, then the cold rolling thickness of sheet material that makes of the first passage is carried out to sheet material and reduce 6%, process annealing process is carried out to the sheet material after cold rolling, intermediate anneal temperature is 600 DEG C, the process annealing time is insulation 6 hours, the cold rolling thickness of sheet material that makes is carried out again to the sheet material after annealing and reduces 6%, repeat process annealing and cold rolling step, until make sheet material meet the requirements of size;

(6) quench treatment is carried out to sheet material, sheet material is reached quenching temperature 940 DEG C with the temperature rise rate of 120 DEG C/h and carries out Water Quenching;

(7) sheet material after quenching is heated to 470 DEG C, is incubated 9 hours, be then cooled to 390 DEG C of insulations 5 hours,

(8) after thermal treatment, plate surface is processed, first many ribs type 250 order emergy is selected to carry out surface coarsening process, adopt alkaline hydrated oxide 83% again, sequestrant 6%, ethylene glycol 4%, nickelous chloride 1%, ammonium chloride 1%, the hot solution of the surface active agent composition of trihydroxybenzene 5% carries out activation treatment to the titanium alloy plate surface after processing, carries out hot spraying WC system sintering metal to the sheet material after activation; WC system cermet particles size is 400 μm, and make WC system sintering metal be deposited as wear-resistant coating on sheet material by spray gun, WC system cermet composition is: WC 23.5 parts, Ni 13 parts, Fe 5 parts, Mo 5.5 parts, Zn 3.5 parts,

(9) after plate surface processes, sheet material is heated to 870 DEG C, is incubated 4 hours, be then cooled to 430 DEG C of insulations 7 hours with 80 DEG C/h, be cooled to 280 DEG C of insulations 6 hours with 15 DEG C/h again, after cool to room temperature with the furnace and obtain final titanium alloy plate.

Embodiment 4:

A kind of titanium base alloy preparation of plates method is provided, it is characterized in that: each constituent mass percentage composition of described alloy is: Ni 8.3%, Al 1.8%, Zn 0.74%, Nb 0.42%, V 0.66%, Mo 0.39%, Bi 0.67%, Mg 0.14%, Si 0.73%, Sn 0.11%, Co 0.076%, Cr 0.046%, Ta 0.027%, Ca 0.079%, Y 0.051%, surplus is titanium and inevitable nonmetal inclusion

Said method comprising the steps of:

(1) carry out preparing burden and batch mixing according to titanium base alloy component, and be pressed into block type electrode, adopt vacuum consumable electrode arc furnace to carry out melting, then cast alloy cast ingot,

(2) carry out homogenizing annealing process to above-mentioned alloy cast ingot, first alloy cast ingot is heated to 1030 DEG C, soaking time is 16 hours; After be cooled to 900 DEG C, soaking time is 6 hours; Afterwards with 100 DEG C/h of slow coolings to room temperature.

(3) to above-mentioned carry out homogenizing annealing after alloy cast ingot forge, initial forging temperature is 930 DEG C, final forging temperature is 890 DEG C, forging after alloy cast ingot at 850 DEG C, be incubated 6 hours;

(4) alloy cast ingot after forging is carried out hot rolling, hot-rolled temperature 850 DEG C, pass deformation 15%, total deformation is greater than 70%, and after hot rolling, air cooling is to room temperature, carries out stress relief annealing 740 DEG C afterwards to sheet material, is incubated 8 hours,

(5) cold rolling: the oxide film of plate surface after first removing hot rolling, then the cold rolling thickness of sheet material that makes of the first passage is carried out to sheet material and reduce 6%, process annealing process is carried out to the sheet material after cold rolling, intermediate anneal temperature is 600 DEG C, the process annealing time is insulation 6 hours, the cold rolling thickness of sheet material that makes is carried out again to the sheet material after annealing and reduces 6%, repeat process annealing and cold rolling step, until make sheet material meet the requirements of size;

(6) quench treatment is carried out to sheet material, sheet material is reached quenching temperature 940 DEG C with the temperature rise rate of 120 DEG C/h and carries out Water Quenching;

(7) sheet material after quenching is heated to 470 DEG C, is incubated 9 hours, be then cooled to 390 DEG C of insulations 5 hours,

(8) after thermal treatment, plate surface is processed, first many ribs type 250 order emergy is selected to carry out surface coarsening process, adopt alkaline hydrated oxide 83% again, sequestrant 6%, ethylene glycol 4%, nickelous chloride 1%, ammonium chloride 1%, the hot solution of the surface active agent composition of trihydroxybenzene 5% carries out activation treatment to the titanium alloy plate surface after processing, carries out hot spraying WC system sintering metal to the sheet material after activation; WC system cermet particles size is 400 μm, and make WC system sintering metal be deposited as wear-resistant coating on sheet material by spray gun, WC system cermet composition is: WC 23.6 parts, Ni 14 parts, Fe 5 parts, Mo 5.9 parts, Zn 3.3 parts,

(9) after plate surface processes, sheet material is heated to 870 DEG C, is incubated 4 hours, be then cooled to 430 DEG C of insulations 7 hours with 80 DEG C/h, be cooled to 280 DEG C of insulations 6 hours with 15 DEG C/h again, after cool to room temperature with the furnace and obtain final titanium alloy plate.

Embodiment 5:

A kind of titanium base alloy preparation of plates method is provided, it is characterized in that: each constituent mass percentage composition of described alloy is: Ni 8.6%, Al 1.9%, Zn 0.78%, Nb 0.44%, V 0.63%, Mo 0.37%, Bi 0.69%, Mg 0.12%, Si 0.76%, Sn 0.18%, Co 0.077%, Cr 0.042%, Ta 0.025%, Ca 0.074%, Y 0.057%, surplus is titanium and inevitable nonmetal inclusion

Said method comprising the steps of:

(1) carry out preparing burden and batch mixing according to titanium base alloy component, and be pressed into block type electrode, adopt vacuum consumable electrode arc furnace to carry out melting, then cast alloy cast ingot,

(2) carry out homogenizing annealing process to above-mentioned alloy cast ingot, first alloy cast ingot is heated to 1030 DEG C, soaking time is 16 hours; After be cooled to 900 DEG C, soaking time is 6 hours; Afterwards with 100 DEG C/h of slow coolings to room temperature.

(3) to above-mentioned carry out homogenizing annealing after alloy cast ingot forge, initial forging temperature is 930 DEG C, final forging temperature is 890 DEG C, forging after alloy cast ingot at 850 DEG C, be incubated 6 hours;

(4) alloy cast ingot after forging is carried out hot rolling, hot-rolled temperature 850 DEG C, pass deformation 15%, total deformation is greater than 70%, and after hot rolling, air cooling is to room temperature, carries out stress relief annealing 740 DEG C afterwards to sheet material, is incubated 8 hours,

(5) cold rolling: the oxide film of plate surface after first removing hot rolling, then the cold rolling thickness of sheet material that makes of the first passage is carried out to sheet material and reduce 6%, process annealing process is carried out to the sheet material after cold rolling, intermediate anneal temperature is 600 DEG C, the process annealing time is 6 hours, the cold rolling thickness of sheet material that makes is carried out again to the sheet material after annealing and reduces 6%, repeat process annealing and cold rolling step, until make sheet material meet the requirements of size;

(6) quench treatment is carried out to sheet material, sheet material is reached quenching temperature 940 DEG C with the temperature rise rate of 120 DEG C/h and carries out Water Quenching;

(7) sheet material after quenching is heated to 470 DEG C, is incubated 9 hours, be then cooled to 390 DEG C of insulations 5 hours,

(8) after thermal treatment, plate surface is processed, first many ribs type 250 order emergy is selected to carry out surface coarsening process, adopt alkaline hydrated oxide 83% again, sequestrant 6%, ethylene glycol 4%, nickelous chloride 1%, ammonium chloride 1%, the hot solution of the surface active agent composition of trihydroxybenzene 5% carries out activation treatment to the titanium alloy plate surface after processing, carries out hot spraying WC system sintering metal to the sheet material after activation; WC system cermet particles size is 400 μm, and make WC system sintering metal be deposited as wear-resistant coating on sheet material by spray gun, WC system cermet composition is: WC 23.3 parts, Ni 12 parts, Fe 5 parts, Mo 5.8 parts, Zn 3.2 parts,

(9) after plate surface processes, sheet material is heated to 870 DEG C, is incubated 4 hours, be then cooled to 430 DEG C of insulations 7 hours with 80 DEG C/h, be cooled to 280 DEG C of insulations 6 hours with 15 DEG C/h again, after cool to room temperature with the furnace and obtain final titanium alloy plate.

Claims (8)

1. a titanium base alloy preparation of plates method, it is characterized in that: each constituent mass percentage composition of described alloy is: Ni 8-9%, Al 1-2%, Zn 0.7-0.8%, Nb 0.4-0.5%, V 0.6-0.7%, Mo 0.3-0.4%, Bi 0.6-0.7%, Mg 0.1-0.2%, Si 0.7-0.8%, Sn 0.1-0.2%, Co 0.07-0.08%, Cr 0.04-0.05%, Ta 0.02-0.03%, Ca 0.07-0.08%, Y 0.05-0.06%, surplus is titanium and inevitable nonmetal inclusion
Said method comprising the steps of:
(1) carry out preparing burden and batch mixing according to titanium base alloy component, and be pressed into block type electrode, adopt vacuum consumable electrode arc furnace to carry out melting, then cast alloy cast ingot,
(2) carry out homogenizing annealing process to above-mentioned alloy cast ingot, first alloy cast ingot is heated to 1030 DEG C, soaking time is 16 hours; After be cooled to 900 DEG C, soaking time is 6 hours; Afterwards with 100 DEG C/h of slow coolings to room temperature,
(3) to above-mentioned carry out homogenizing annealing after alloy cast ingot forge, initial forging temperature is 930 DEG C, final forging temperature is 890 DEG C, forging after alloy cast ingot at 850 DEG C, be incubated 6 hours;
(4) alloy cast ingot after forging is carried out hot rolling, hot-rolled temperature 850 DEG C, pass deformation 15%, total deformation is greater than 70%, and after hot rolling, air cooling is to room temperature, carries out stress relief annealing 740 DEG C afterwards to sheet material, is incubated 8 hours,
(5) cold rolling: the oxide film of plate surface after first removing hot rolling, then the cold rolling thickness of sheet material that makes of the first passage is carried out to sheet material and reduce 6%, process annealing process is carried out to the sheet material after cold rolling, intermediate anneal temperature is 600 DEG C, the process annealing time is insulation 6 hours, the cold rolling thickness of sheet material that makes is carried out again to the sheet material after annealing and reduces 6%, repeat process annealing and cold rolling step, until make sheet material meet the requirements of size;
(6) quench treatment is carried out to sheet material, sheet material is reached quenching temperature 940 DEG C with the temperature rise rate of 120 DEG C/h and carries out Water Quenching;
(7) sheet material after quenching is heated to 470 DEG C, is incubated 9 hours, be then cooled to 390 DEG C of insulations 5 hours,
(8) after thermal treatment, plate surface is processed, first many ribs type 250 order emergy is selected to carry out surface coarsening process, adopt alkaline hydrated oxide 83% again, sequestrant 6%, ethylene glycol 4%, nickelous chloride 1%, ammonium chloride 1%, the hot solution of the surface active agent composition of trihydroxybenzene 5% carries out activation treatment to the titanium alloy plate surface after processing, carries out hot spraying WC system sintering metal to the sheet material after activation; WC system cermet particles size is 400 μm, and make WC system sintering metal be deposited as wear-resistant coating on sheet material by spray gun, WC system cermet composition is: WC 23-24 part, Ni 11-15 part, Fe 5 parts, Mo 5-6 part, Zn 3-4 part,
(9) after plate surface processes, sheet material is heated to 870 DEG C, is incubated 4 hours, be then cooled to 430 DEG C of insulations 7 hours with 80 DEG C/h, be cooled to 280 DEG C of insulations 6 hours with 15 DEG C/h again, after cool to room temperature with the furnace and obtain final titanium alloy plate.
2. titanium base alloy preparation of plates method as claimed in claim 1, each constituent mass percentage composition of described alloy is: Ni 8%, Al 1%, Zn 0.7%, Nb 0.4%, V 0.6%, Mo 0.3%, Bi 0.6%, Mg 0.1%, Si 0.7%, Sn 0.1%, Co 0.07%, Cr 0.04%, Ta 0.02%, Ca 0.07%, Y 0.05%, surplus is titanium and inevitable nonmetal inclusion.
3. titanium base alloy preparation of plates method as claimed in claim 1, each constituent mass percentage composition of described alloy is: Ni 9%, Al 2%, Zn 0.8%, Nb 0.5%, V 0.7%, Mo 0.4%, Bi 0.7%, Mg 0.2%, Si 0.8%, Sn 0.2%, Co 0.08%, Cr 0.05%, Ta 0.03%, Ca 0.08%, Y 0.06%, surplus is titanium and inevitable nonmetal inclusion.
4. titanium base alloy preparation of plates method as claimed in claim 1, each constituent mass percentage composition of described alloy is: Ni 8.5%, Al 1.5%, Zn 0.75%, Nb 0.45%, V 0.65%, Mo 0.35%, Bi 0.65%, Mg 0.15%, Si 0.75%, Sn 0.15%, Co 0.075%, Cr 0.045%, Ta 0.025%, Ca 0.075%, Y 0.055%, surplus is titanium and inevitable nonmetal inclusion.
5. titanium base alloy preparation of plates method as claimed in claim 1, each constituent mass percentage composition of described alloy is: Ni 8.3%, Al 1.2%, Zn 0.73%, Nb 0.47%, V 0.68%, Mo 0.39%, Bi 0.64%, Mg 0.16%, Si 0.73%, Sn 0.16%, Co 0.078%, Cr 0.044%, Ta 0.023%, Ca 0.077%, Y 0.056%, surplus is titanium and inevitable nonmetal inclusion.
6. titanium base alloy preparation of plates method as claimed in claim 1, WC system cermet composition is: WC 23 parts, Ni 11 parts, Fe 5 parts, Mo 5 parts, Zn 3 parts.
7. titanium base alloy preparation of plates method as claimed in claim 1, WC system cermet composition is: WC 24 parts, Ni 15 parts, Fe 5 parts, Mo 6 parts, Zn 4 parts.
8. titanium base alloy preparation of plates method as claimed in claim 1, WC system cermet composition is: WC 23.5 parts, Ni 13 parts, Fe 5 parts, Mo 5.5 parts, Zn 3.5 parts.
CN201410018634.XA 2014-01-16 2014-01-16 Titanium-based alloy plate and preparation method thereof CN103695709B (en)

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