CN105755414B - A kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity - Google Patents
A kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity Download PDFInfo
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- CN105755414B CN105755414B CN201610218049.3A CN201610218049A CN105755414B CN 105755414 B CN105755414 B CN 105755414B CN 201610218049 A CN201610218049 A CN 201610218049A CN 105755414 B CN105755414 B CN 105755414B
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- 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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
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- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- Metal Rolling (AREA)
Abstract
The invention discloses a kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity, using a kind of alpha and beta type titan alloy thermomechanical treatment press quenching device, including two-roller mill, the extreme trace time exit of two-roller mill is provided with flowing water cooling pipe, the two ends of flowing water cooling pipe are supported by support a and support b respectively, support a is set close to two-roller mill, one end port of flowing water cooling pipe is charging aperture, the tube wall of flowing water cooling pipe is provided with water inlet, water inlet is set close to charging aperture, the other end port of flowing water cooling pipe is discharging, delivery port, discharging, the lower section of delivery port is provided with water receiving tank, the side of water receiving tank is provided with cold bed, alpha and beta type titan alloy is rolled by certain rolling deformation amount first, obtain rolled piece, Quenching Treatment is carried out in flowing water cooling tube；Rolled piece after quenching carries out the destressing heat treatment of low temperature again.Solve the problem of efficiency present in existing alpha and beta type titan alloy thermomechanical treatment process is low, power consumption is high.
Description
Technical field
The invention belongs to titanium alloy material hot-working, technical field of heat treatment technology, it is related to a kind of raising alpha and beta type titan alloy
The deformation heat treatment method of intensity.
Background technology
Alpha and beta type titan alloy refers to contain α stable elements, contains again and contain α and β two-phase structures under beta stable element, normal temperature
Titanium alloy, the characteristics of alloy often has alpha titanium alloy and beta-titanium alloy concurrently, normal temperature strength is high, and the heat resistance of moderate temperature is not yet
Mistake, heat treatment reinforcement performance and welding performance are good, diphasic titanium alloy have the trade mark it is many, using it is wide the characteristics of.Diphasic titanium alloy
Can be effectively improved and adjust α phases and β phases content and ratio in hot-working and heat treatment stages, with reach application requirement tissue and
Performance.Thermomechanical treatment process is to organically combine plastic deformation and heat treatment, obtains working hardening and phase transformation strengthening
A kind of process of comprehensive full effect.
Need to carry out Quenching Treatment in the thermomechanical treatment process link of diphasic titanium alloy, at present due to reasons such as equipment
By the way of again be heat-treated+quench after hot-working, not only efficiency is low, power consumption, and is individually heat-treated and quenches and be only suitable
Close the small material of three-dimensional dimension, it is impossible to realize the production of mass.
The content of the invention
It is an object of the invention to provide a kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity, existing α is solved
Efficiency present in+beta titanium alloy thermomechanical treatment process is low, power consumption high, it is impossible to the problem of mass production.
The technical solution adopted in the present invention is that a kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity is used
A kind of alpha and beta type titan alloy thermomechanical treatment press quenching device, including two-roller mill, the extreme trace time exit of two-roller mill are provided with
Flowing water cooling pipe, the two ends of flowing water cooling pipe are supported by support a and support b respectively, and support a is set close to two-roller mill
Put, support a height of the height higher than support b makes flowing water cooling pipe oblique, and one end port of flowing water cooling pipe is
Charging aperture, the tube wall of flowing water cooling pipe is provided with water inlet, and water inlet is set close to charging aperture, flowing water cooling pipe it is another
It is discharging, delivery port to hold port, and discharging, the lower section of delivery port are provided with water receiving tank, and the side of water receiving tank is provided with cold bed；
Wherein the scope of the inclined angle alpha of flowing water cooling pipe is 5 °~10 °；
Wherein 2~3 times of a diameter of workpiece diameter of flowing water cooling pipe；
Wherein water inlet connects water receiving tank by pipeline；
Wherein flowing water cooling length of tube is 1.5m~2.5m；
The charging aperture for the positive convection current water cooling pipeline of rolled piece that wherein two-roller mill is rolled out is set；
The two ends port bore of wherein flowing water cooling pipe is identical and is horn-like；
Wherein two-roller mill, support a, support b, water receiving tank and cold bed are each attached on same plane；
Specifically include following steps：
Step 1, alpha and beta type titan alloy is rolled by certain rolling deformation amount in two-roller mill, rolled as defined in acquisition
Part specification and microscopic structure；
Step 2, the rolled piece of gained carries out press quenching using remaining temperature in flowing water cooling pipe after the completion of step 1 is rolled
Processing；
Step 3. carries out the destressing heat treatment of low temperature to the rolled piece after step 2 quenching.
The features of the present invention is also resided in,
Rolling deformation amount when alpha and beta type titan alloy is rolled wherein in step 1 is controlled 85%~95%.
Warm temperature control is at 800 DEG C~850 DEG C more than rolled piece when being quenched wherein in step 2.
Wherein step 2 press quenching processing detailed process be：
First, running water is connected from water inlet, makes to be full of cooling water in flowing water cooling pipe, will have been rolled through step 1
Rolled piece after is entered into and through inside the flowing water cooling pipe full of cooling water from the charging aperture of flowing water cooling pipe one end, from
The discharging of the flowing water cooling pipe other end, delivery port enter cold bed air cooling after coming out, quenching is completed.
The temperature for carrying out destressing heat treatment wherein in step 3 to the rolled piece after quenching is 550 DEG C~650 DEG C.
The beneficial effects of the invention are as follows the method that the present invention is provided is rolled by carrying out certain deformation quantity to alpha and beta type titan alloy
System, and press quenching technique and the thermomechanical treatment process of the Low-temperature stress-relief annealing after quenching are carried out after rolling, utilize shape
Become reinforcing and phase transformation strengthening on the premise of certain plasticity is kept, improve (alpha+beta) Type Titanium Alloy strength of materials.Meanwhile, pass through
Online float, realizes the online flowing water quenching technical of diphasic titanium alloy, and the continuous quenching processing of rolled piece can be achieved, real
Existing mass processing.The efficiency that solves existing thermomechanical treatment process is low, power consumption is high, it is impossible to the problem of mass production.
Brief description of the drawings
Fig. 1 is a kind of type alpha+beta titanium for using in a kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity of the present invention
Alloy deformation is heat-treated the structural representation of press quenching device；
Fig. 2 is TC4 titaniums conjunction in a kind of embodiment 1 for the deformation heat treatment method for improving alpha and beta type titan alloy intensity of the present invention
Golden microscopic structure；
Fig. 3 is TC4 titaniums conjunction in a kind of embodiment 1 for the deformation heat treatment method for improving alpha and beta type titan alloy intensity of the present invention
Martensitic structure α ' in golden microscopic structure.
In figure, 1. two-roller mills, 2. rolled pieces, 3. water inlets, 4. support a, 5. flowing water cooling pipes, 6. water receiving tanks, 7. is cold
Bed, 8. support b.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity of the present invention, using a kind of alpha and beta type titan alloy deformation
Press quenching device, structure are heat-treated as shown in figure 1, including two-roller mill 1, the extreme trace time exit of two-roller mill 1 is provided with stream
Water cooling pipeline 5, the two ends of flowing water cooling pipe 5 are supported by support a4 and support b8 respectively, and support a4 is close to two-roller mill 1
Set, support a4 height of the height higher than support b8 makes flowing water cooling pipe oblique and form angle α, stream with horizontal plane
One end port of water cooling pipeline 5 is charging aperture, and the tube wall of flowing water cooling pipe 5 is provided with water inlet 3, and water inlet 3 is close to entering
Material mouth is set, and the other end port of flowing water cooling pipe 5 is discharging, delivery port, and discharging, the lower section of delivery port are provided with water receiving tank 6,
The side of water receiving tank 6 is provided with cold bed 7；
Wherein the scope of the inclined angle alpha of flowing water cooling pipe 5 is 5 °~10 °；
Wherein 2~3 times of the diameter of a diameter of rolled piece 2 of flowing water cooling pipe 5；
Wherein water inlet 3 connects water receiving tank 6 by pipeline；
Wherein the length of flowing water cooling tube 5 is 1.5m~2.5m；
The charging aperture for the positive convection current water cooling pipeline 5 of rolled piece 2 that wherein two-roller mill 1 is rolled out is set；
The two ends port bore of wherein flowing water cooling pipe 5 is identical and is horn-like；
Wherein two-roller mill 1, support a4, support b8, water receiving tank 6 and cold bed 7 are each attached on same plane；
Specifically include following steps：
Step 1, alpha and beta type titan alloy is rolled by certain rolling deformation amount in two-roller mill 1, rolled as defined in acquisition
(type alpha+beta titanium alloy rod bar) specification of part 2 and microscopic structure；
Step 2, the rolled piece 2 (type alpha+beta titanium alloy rod bar) of the gained after the completion of step 1 is rolled is cold in flowing water using remaining temperature
But press quenching processing is carried out in pipeline 5；
Step 3. carries out the destressing heat treatment of low temperature to the rolled piece 2 (type alpha+beta titanium alloy rod bar) after step 2 quenching.
Rolling deformation amount when alpha and beta type titan alloy is rolled wherein in step 1 is controlled 85%~95%.
The remaining temperature temperature control of rolled piece 2 when being quenched wherein in step 2 is in 800 DEG C~850 DEG C, the tool of press quenching processing
Body process is：
First, running water is connected at water inlet 3, makes to be full of cooling water in flowing water cooling pipe 5, will be rolled through step 1
After the completion of rolled piece 2 entered into and through from the charging aperture of the one end of flowing water cooling pipe 5 in the flowing water cooling pipe 5 full of cooling water
Portion, discharging, delivery port from the other end of flowing water cooling pipe 5 enter the air cooling of cold bed 7 after coming out, quenching is completed.
The temperature for carrying out destressing heat treatment wherein in step 3 to the rolled piece 2 after quenching is 550 DEG C~650 DEG C.
Embodiment 1
Thermomechanical treatment process is carried out to TC4 diphasic titanium alloys bar using the present invention, first using 1 pair of two-roller mill
TC4 diphasic titanium alloys carry out the rolled piece 2 that rolling format diameter is Φ 15mm, and rolling deformation amount is 91.6%；Rolling is laggard
Row quenching, the temperature of rolled piece 2 is 820 ± 5 DEG C before quenching, before quenching, connects water inlet 3, circulating water is full of flowing water cooling pipe
5；(TC4) charging aperture of the rolled piece 2 from the one end of flowing water cooling pipe 5 after the rolling of two-roller mill 1 is entered into and through full of cooling water
Flowing water cooling pipe 5 inside, discharging, delivery port from the other end of flowing water cooling pipe 5 come out after enter the air cooling of cold bed 7；Most
Low temperature destressing heat treatment is carried out to (TC4) rolled piece 2 being positioned on cold bed 7 afterwards, heat treatment temperature is 600 DEG C.To through deformation
Material is detected after heat treatment, and TC4 titanium alloy microstructures are tiny two-phase structure (referring to Fig. 2), are observed by SEM,
It was found that partial martensite tissue α ' (referring to Fig. 3), realizes phase transformation transformation；Mechanics properties testing is obtained, and Tensile strength is
1047MPa, elongation percentage is 17.5%, and on the basis of intensity is improved, plasticity is good.
Embodiment 2
Thermomechanical treatment process is carried out to TC20 (alpha+beta) Type Titanium Alloys bar using the present invention, two-roller mill 1 first is carried out
Rolling format diameter is Φ 18mm rolled piece 2, and rolling deformation amount is 85%；Quenched after rolling, the temperature of rolled piece 2 before quenching
Spend for 845 ± 5 DEG C, before quenching, connect water inlet 3, circulating water is full of flowing water cooling pipe 5；(TC20) rolled piece 2 is from two rollings
Machine 1 is entered into and through inside the flowing water cooling pipe 5 full of cooling water after rolling from the charging aperture of the one end of flowing water cooling pipe 5,
Discharging, delivery port from the other end of flowing water cooling pipe 5 enter the air cooling of cold bed 7 after coming out；Finally to being positioned on cold bed 7
(TC20) rolled piece 2 carries out low temperature destressing heat treatment, and heat treatment temperature is 650 DEG C.To after thermomechanical treatment TC20 materials enter
Row mechanics properties testing, Tensile strength is 1058MPa, and elongation percentage is 14.5%, on the basis of certain plasticity is kept, material
Material tensile strength is obviously improved, and 100MPa is improved than common process processing intensity.
Embodiment 3
Thermomechanical treatment process is carried out to TC4ELI (alpha+beta) Type Titanium Alloys bar using the present invention, two-roller mill 1 first enters
The rolled piece 2 that the rolling format diameter of row is Φ 20mm, rolling deformation amount is 95%；Quenched after rolling, rolled piece 2 before quenching
Temperature is 805 ± 5 DEG C, before quenching, connects water inlet 3 (leading to running water into flowing water cooling tube i.e. at water inlet 3), makes flowing
Water is full of flowing water cooling pipe 5；(TC4ELI) rolled piece 2 after the rolling of two-roller mill 1 from the charging aperture of the one end of flowing water cooling pipe 5
Enter into and through inside the flowing water cooling pipe 5 full of cooling water, discharging, delivery port from the other end of flowing water cooling pipe 5 go out
Enter the air cooling of cold bed 7 after coming；Finally (TC4ELI) rolled piece 2 being positioned on cold bed 7 is carried out at low temperature destressing heat treatment, heat
It is 550 DEG C to manage temperature.To the TC4ELI materials progress mechanics properties testing after thermomechanical treatment, Tensile strength is
1065MPa, elongation percentage is 19.5%, and on the basis of certain plasticity is kept, Tensile strength is obviously improved, and compares common process
Processing intensity improves 110MPa.
The present invention it is a kind of improve alpha and beta type titan alloy intensity deformation heat treatment method the characteristics of be：
1) rolling deformation amount of the present invention when alpha and beta type titan alloy is rolled is controlled 85%~95%, to obtain abundant shape
Become tissue, simultaneously containing higher crystal defect and distortion energy；
2) present invention realizes that press quenching is handled, and make use of the remaining temperature after rolled piece rolling to carry out Quenching Treatment, improves
Efficiency, realizes batch type processing.
3) present invention cools down pipe device using flowing water, realizes in uniform rapid quenching, remains more crystal defect, and
Reach the purpose of phase transformation strengthening；
4) present invention uses low temperature heat-treatment process after quenching；Material stress is eliminated, while it is high-strength to remain material
Spend performance.
A kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity of the present invention is improved suitable for (alpha+beta) Type Titanium Alloy
Strength of materials handling process, it is processed by the invention after, the strength of materials lifting about 50~100MPa；The present invention is used and quenched online simultaneously
Fire processing, can be achieved the continuous quenching processing of rolled piece, realizes that mass is handled.Solve the efficiency of existing thermomechanical treatment process
Low, power consumption is high, it is impossible to the problem of mass production.
Claims (2)
1. a kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity, it is characterised in that：Using a kind of alpha and beta type titan alloy
Deformation heat treatment press quenching device, including two-roller mill (1), the extreme trace time exit of two-roller mill (1) is cooled down provided with flowing water
Pipeline (5), the two ends of flowing water cooling pipe (5) are supported by support a (4) and support b (8) respectively, and support a (4) is close to two rollers
Milling train (1) is set, and support a (4) height of the height higher than support b (8) makes flowing water cooling pipe (5) obliquely, and flowing water is cold
But one end port of pipeline (5) is charging aperture, and the tube wall of flowing water cooling pipe (5) is provided with water inlet (3), and water inlet (3) is leaned on
The nearly charging aperture is set, under the other end port of flowing water cooling pipe (5) is discharging, delivery port, the discharging, delivery port
Side is provided with water receiving tank (6), and the side of water receiving tank (6) is provided with cold bed (7)；
The scope of the inclined angle alpha of the flowing water cooling pipe (5) is 5 °~10 °；
2~3 times of a diameter of rolled piece (2) diameter of the flowing water cooling pipe (5)；
The water inlet (3) connects water receiving tank (6) by pipeline；
Flowing water cooling pipe (5) length is 1.5m~2.5m；
The charging aperture for the positive convection current water cooling pipeline (5) of rolled piece (2) that the two-roller mill (1) rolls out is set；
The two ends port bore of the flowing water cooling pipe (5) is identical and is horn-like；
The two-roller mill (1), support a (4), support b (8), water receiving tank (6) and cold bed (7) are each attached on same plane；
Specifically include following steps：
Step 1, alpha and beta type titan alloy is rolled by certain rolling reduction in two-roller mill (1), rolled as defined in acquisition
Part (2) specification and microscopic structure；
Step 2, the rolled piece (2) of the gained after the completion of step 1 is rolled is carried out online using remaining temperature in flowing water cooling pipe (5)
Quenching Treatment；
Step 3, the rolled piece (2) after being quenched to step 2 carries out the destressing heat treatment of low temperature；
Rolling reduction when alpha and beta type titan alloy is rolled in the step 1 is controlled 85%~95%；
The remaining temperature temperature control of rolled piece (2) when being quenched in the step 2 is at 800 DEG C~850 DEG C；
First, running water is connected from water inlet (3), makes to be full of cooling water in flowing water cooling pipe (5), will be rolled through step 1
After the completion of rolled piece (2) enter into and through the flowing water cooling tube full of cooling water from the charging aperture of flowing water cooling pipe (5) one end
Road (5) is internal, and discharging, delivery port from flowing water cooling pipe (5) other end enter cold bed (7) air cooling after coming out, and quenching is completed.
2. a kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity according to claim 1, it is characterised in that：
The temperature for carrying out destressing heat treatment in the step 3 to the rolled piece (2) after quenching is 550 DEG C~650 DEG C.
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| CN201610218049.3A CN105755414B (en) | 2016-04-08 | 2016-04-08 | A kind of deformation heat treatment method for improving alpha and beta type titan alloy intensity |
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| CN105755414B true CN105755414B (en) | 2017-09-26 |
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| TWI650162B (en) * | 2017-12-27 | 2019-02-11 | 大田精密工業股份有限公司 | Titanium alloy of duplex phase golf head |
| CN109234656B (en) * | 2018-11-08 | 2020-02-14 | 江苏理工学院 | Pre-deformation heat treatment process for improving strength of metastable β titanium alloy |
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