CN105951015A - Preparation method of Ti6Al7Nb titanium alloy fine-grain wire material - Google Patents
Preparation method of Ti6Al7Nb titanium alloy fine-grain wire material Download PDFInfo
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- CN105951015A CN105951015A CN201610355510.XA CN201610355510A CN105951015A CN 105951015 A CN105951015 A CN 105951015A CN 201610355510 A CN201610355510 A CN 201610355510A CN 105951015 A CN105951015 A CN 105951015A
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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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Abstract
The invention discloses a preparation method of a Ti6Al7Nb titanium alloy fine-grain wire material. The preparation method comprises the steps of selecting a Ti6Al7Nb titanium alloy forging stock with uniform longitudinal and horizontal structures, putting the Ti6Al7Nb titanium alloy forging stock in a box type resistance furnace, carrying out high-temperature heating near a phase transformation point, and rolling the forging block into a drawing blank through adopting a single-fire multi-pass method; then, carrying out tube type resistance furnace passing heating on the obtained drawing blank under the phase transformation point, and carrying out multi-pass heating drawing; and finally, carrying out thermal treatment, straightening and polishing to obtain the Ti6Al7Nb titanium alloy fine-grain wire material. According to the preparation method, the Ti6Al7Nb titanium alloy fine-grain wire material obtained through the method is more uniform compared with horizontal structures obtained through a conventional rolling production technology, the crystal grain is fine, the material reaches A1-A2 level in an ETTC2 rating chart, and the performances meet the standard requirements of Ti6Al7Nb rod and wire materials for surgical implants.
Description
Technical field
The invention belongs to titanium alloy material processing technique field, be specifically related to a kind of Ti6Al7Nb titanium alloy
The preparation method of thin brilliant silk material.
Background technology
Ti6Al7Nb titanium alloy has low density, suitable intensity and high fatigue strength and excellent
Biocompatibility, corrosion resistance, the feature such as machinability, be widely used as bio-medical material.
Conventional thermal processing technique is thought: Ti6Al7Nb titan alloy casting ingot forges through cogging, and as-cast structure breaks
After broken, 940 DEG C ± 30 DEG C heating, rolling fire time deformation amount controlling, 50%～70%, can get isometry
Alpha+beta changes tissue, meets the A1-A9 level of ETTC2 standard diagram.
To surgical implant Ti6Al7Nb titanium alloy micro-group of the standards such as GB/T, ISO and ASTM
Knit regulation: for alpha+beta tissue, and the A1-A9 level of ETTC2 standard diagram should be met.Part Medical treatment device
Tool manufacturer requires that the tissue grading of Φ 2～Φ 8mmTi6Al7Nb titanium alloy bar silk material reaches ETTC2 standard
Collection of illustrative plates A1-A2 level.The microstructural requirements of surgical implant Ti6Al7Nb rod silk material is the most tiny
Uniformly, to ensure the service life of medical device product.Ti6Al7Nb titanium alloy is big because of resistance of deformation,
Processing performance is the best, uses conventional preparation method to be difficult to stably produce fine microstructures, stable performance
Silk material, especially during batch production, difficulty is bigger.
Summary of the invention
It is an object of the invention to provide the preparation method of a kind of Ti6Al7Nb titanium alloy carefully brilliant silk material, solve
Existing method is difficult to stably produce the Ti6Al7Nb titanium alloy carefully brilliant silk of fine microstructures, stable performance
The problem of material.
The technical solution adopted in the present invention is: the preparation side of a kind of Ti6Al7Nb titanium alloy carefully brilliant silk material
Method, specifically includes following steps:
Step 1, blank processing:
Choose the Ti6Al7Nb titanium alloy forging stock of vertical, horizontal even tissue, be placed in chamber type electric resistance furnace,
High-temperature heating near transformation temperature, using a fire multi-pass is drawing blank by forging stock rolling；
Step 2, hot pull:
The drawing blank obtained step 1 below transformation temperature uses tube type resistance furnace to be heated by formula, and
Carry out multi-pass hot pull；
Step 3, heat treatment:
Blank after step 2 hot pull is carried out heat treatment, then aligns polishing, i.e. obtain
Ti6Al7Nb titanium alloy carefully brilliant silk material.
The feature of the present invention also resides in,
In step 1, heating-up temperature is below transformation temperature 10 DEG C～35 DEG C, temperature retention time be 90min～
150min。
In step 1, rolling pass is 25～31 passages, and every time deflection is 10%～25%.
In step 1, after rolling, the Dan Huoci deflection of forging stock is 97%～99%.
In step 2, heating-up temperature is below transformation temperature 30 DEG C～60 DEG C.
In step 2, hot pull passage is 5～25 passages, and every time deflection is 7%～25%.
In step 2, after drawing, the cumulative deformation of blank is 70%～98%.
In step 3, heat treatment temperature is 750 DEG C～800 DEG C, and temperature retention time is 1h～3h.
The invention has the beneficial effects as follows, the present invention carrys out control rod silk material by heating-up temperature and deflection
Tissue, uses the inventive method to prepare Ti6Al7Nb titanium alloy carefully brilliant silk material, ratio pair rolling work
The horizontal organization that skill obtains is uniform the most much, and crystal grain is tiny, meets ETTC2 judge picture A1-A2 level,
Properties has also reached the standard-required of surgical implant Ti6Al7Nb rod silk material.
Accompanying drawing explanation
Fig. 1 is the horizontal organization high power of the rear Ti6Al7Nb titanium alloy carefully brilliant silk material that the present invention prepares
Figure；
Fig. 2 is every mechanical property of the rear Ti6Al7Nb titanium alloy carefully brilliant silk material that the present invention prepares
Figure.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
The preparation method of the present invention a kind of Ti6Al7Nb titanium alloy carefully brilliant silk material, specifically includes following steps:
Step 1, chooses the Ti6Al7Nb titanium alloy forging stock that specification is vertical, horizontal even tissue, is placed in
10 DEG C～35 DEG C heating below transformation temperature in chamber type electric resistance furnace, the stove inside holding time be 90min～
150min, uses 25～31 passes, Dan Huoci deflection 97%～99%, every time deflection
It is 10%～25%；
Step 2, heats the excellent base obtained through step 1 rolling in tube furnace, and heating-up temperature selects
Below transformation temperature 30 DEG C～60 DEG C, mode of heating, for be heated by formula, uses 5～25 passage hot pulls,
Cumulative deformation 70%～95%, every time deflection is 7%～25%；
Step 3, by heat treatment 1h～3h at 750 DEG C～800 DEG C of the blank through step 2 hot pull, rectifys
Straight polishing, i.e. obtains Ti6Al7Nb titanium alloy carefully brilliant silk material.
Fig. 1 is the transverse set of the Ti6Al7Nb titanium alloy using the inventive method to prepare carefully brilliant silk material
Knitting high power figure, as can be seen from the figure the horizontal organization of silk material is uniform.Fig. 2 is that the inventive method is prepared into
Every mechanical property figure of the Ti6Al7Nb titanium alloy arrived carefully brilliant silk material, as can be seen from the figure it is every
Mechanical property has all reached standard-required.
Embodiment 1
Step 1, chooses the Ti6Al7Nb titanium alloy forging that specification is Φ 100mm vertical, horizontal even tissue
Base, is placed in 10 DEG C of heating below transformation temperature in chamber type electric resistance furnace, and the stove inside holding time is 130min,
Using 27 passes to Φ 14.5mm, every time deflection is 10%～15%；
Step 2, heats the excellent base obtained through step 1 rolling in tube furnace, and heating-up temperature selects
Below transformation temperature 50 DEG C, mode of heating for be heated by formula, use 9 passage hot pulls to Φ 7.5mm,
Every time deflection is 12%～17%；
Step 3, is incubated the blank through step 2 hot pull 3h at 750 DEG C and carries out heat treatment, aligning
Polishing, i.e. obtains Ti6Al7Nb titanium alloy carefully brilliant silk material.
Embodiment 2
Step 1, chooses the Ti6Al7Nb titanium alloy forging stock that specification is Φ 95mm vertical, horizontal even tissue,
Being placed in 25 DEG C of heating below transformation temperature in chamber type electric resistance furnace, the stove inside holding time is 110min, uses
25 passes are to Φ 13.5mm, and every time deflection is 15%～19%；
Step 2, heats the excellent base obtained through step 1 rolling in tube furnace, and heating-up temperature selects
Below transformation temperature 30 DEG C, mode of heating for be heated by formula, use 12 passage hot pulls to Φ 6.5mm,
Every time deflection is 7%～15%；
Step 3, is incubated the blank through step 2 hot pull 2h at 780 DEG C and carries out heat treatment, aligning
Polishing, i.e. obtains Ti6Al7Nb titanium alloy carefully brilliant silk material.
Embodiment 3
Step 1, chooses the Ti6Al7Nb titanium alloy forging stock that specification is Φ 80mm vertical, horizontal even tissue,
Being placed in 35 DEG C of heating below transformation temperature in chamber type electric resistance furnace, the stove inside holding time is 90min, uses
29 passes are to Φ 9.5mm, and every time deflection is 16%～25%；
Step 2, heats the excellent base obtained through step 1 rolling in tube furnace, and heating-up temperature selects
Below transformation temperature 60 DEG C, mode of heating for be heated by formula, use 25 passage hot pulls to Φ 2mm,
Every time deflection is 18%～25%；
Step 3, is incubated the blank through step 2 hot pull 1h at 800 DEG C and carries out heat treatment, aligning
Polishing, i.e. obtains Ti6Al7Nb titanium alloy carefully brilliant silk material.
Claims (8)
1. the preparation method of a Ti6Al7Nb titanium alloy carefully brilliant silk material, it is characterised in that specifically include
Following steps:
Step 1, blank processing:
Choose the Ti6Al7Nb titanium alloy forging stock of vertical, horizontal even tissue, be placed in chamber type electric resistance furnace,
High-temperature heating near transformation temperature, using a fire multi-pass is drawing blank by forging stock rolling；
Step 2, hot pull:
The drawing blank obtained step 1 below transformation temperature uses tube type resistance furnace to be heated by formula, and
Carry out many fire time multi-pass hot pulls；
Step 3, heat treatment:
Blank after step 2 hot pull is carried out heat treatment, then aligns polishing, i.e. obtain
Ti6Al7Nb titanium alloy carefully brilliant silk material.
The preparation method of a kind of Ti6Al7Nb titanium alloy the most according to claim 1 carefully brilliant silk material,
It is characterized in that, in described step 1, heating-up temperature is below transformation temperature 10 DEG C～35 DEG C, and temperature retention time is
90min～150min.
The preparation method of a kind of Ti6Al7Nb titanium alloy the most according to claim 1 carefully brilliant silk material,
It is characterized in that, in described step 1, rolling pass is 25～31 passages, every time deflection be 10%～
25%.
The preparation method of a kind of Ti6Al7Nb titanium alloy the most according to claim 1 carefully brilliant silk material,
It is characterized in that, in described step 1, after rolling, the Dan Huoci deflection of forging stock is 97%～99%.
The preparation method of a kind of Ti6Al7Nb titanium alloy the most according to claim 1 carefully brilliant silk material,
It is characterized in that, in described step 2, heating-up temperature is below transformation temperature 30 DEG C～60 DEG C.
The preparation method of a kind of Ti6Al7Nb titanium alloy the most according to claim 1 carefully brilliant silk material,
It is characterized in that, in described step 2, hot pull passage is 5～25 passages, every time deflection be 7%～
25%.
The preparation method of a kind of Ti6Al7Nb titanium alloy the most according to claim 1 carefully brilliant silk material,
It is characterized in that, in described step 2, after drawing, the cumulative deformation of blank is 70%～98%.
The preparation method of a kind of Ti6Al7Nb titanium alloy the most according to claim 1 carefully brilliant silk material,
It is characterized in that, in described step 3, heat treatment temperature is 750 DEG C～800 DEG C, and temperature retention time is 1～3h.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214207A (en) * | 2017-05-22 | 2017-09-29 | 西部超导材料科技股份有限公司 | A kind of processing method of high uniform beta titanium alloy bar |
| CN107214474A (en) * | 2017-05-22 | 2017-09-29 | 西部超导材料科技股份有限公司 | A kind of preparation method of high-strength Ti6Al7Nb titanium alloy wire materials |
| CN107282688A (en) * | 2017-07-25 | 2017-10-24 | 西部超导材料科技股份有限公司 | A kind of Ti45Nb alloy discs justify the preparation method of silk material |
| CN108048771A (en) * | 2017-12-18 | 2018-05-18 | 西安赛特思迈钛业有限公司 | A kind of processing method of diphasic titanium alloy bar crystal grain refinement |
| CN111644462A (en) * | 2020-05-20 | 2020-09-11 | 西部超导材料科技股份有限公司 | Preparation method of Gr23 titanium alloy wire for powder making |
| CN112981174A (en) * | 2021-02-04 | 2021-06-18 | 新疆湘润新材料科技有限公司 | Preparation method of high-strength high-plasticity titanium alloy wire |
| CN114535343A (en) * | 2022-04-26 | 2022-05-27 | 西部宝德科技股份有限公司 | Titanium fiber preparation method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214207A (en) * | 2017-05-22 | 2017-09-29 | 西部超导材料科技股份有限公司 | A kind of processing method of high uniform beta titanium alloy bar |
| CN107214474A (en) * | 2017-05-22 | 2017-09-29 | 西部超导材料科技股份有限公司 | A kind of preparation method of high-strength Ti6Al7Nb titanium alloy wire materials |
| CN107282688A (en) * | 2017-07-25 | 2017-10-24 | 西部超导材料科技股份有限公司 | A kind of Ti45Nb alloy discs justify the preparation method of silk material |
| CN107282688B (en) * | 2017-07-25 | 2019-05-24 | 西部超导材料科技股份有限公司 | A kind of preparation method of Ti45Nb alloy disc circle silk material |
| CN108048771A (en) * | 2017-12-18 | 2018-05-18 | 西安赛特思迈钛业有限公司 | A kind of processing method of diphasic titanium alloy bar crystal grain refinement |
| CN111644462A (en) * | 2020-05-20 | 2020-09-11 | 西部超导材料科技股份有限公司 | Preparation method of Gr23 titanium alloy wire for powder making |
| CN111644462B (en) * | 2020-05-20 | 2022-03-04 | 西部超导材料科技股份有限公司 | Preparation method of Gr23 titanium alloy wire for powder making |
| CN112981174A (en) * | 2021-02-04 | 2021-06-18 | 新疆湘润新材料科技有限公司 | Preparation method of high-strength high-plasticity titanium alloy wire |
| CN114535343A (en) * | 2022-04-26 | 2022-05-27 | 西部宝德科技股份有限公司 | Titanium fiber preparation method |
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