CN109182936A - The method for improving industrially pure titanium wear-resisting property by mixing yoghurt - Google Patents
The method for improving industrially pure titanium wear-resisting property by mixing yoghurt Download PDFInfo
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- CN109182936A CN109182936A CN201811080592.7A CN201811080592A CN109182936A CN 109182936 A CN109182936 A CN 109182936A CN 201811080592 A CN201811080592 A CN 201811080592A CN 109182936 A CN109182936 A CN 109182936A
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- pure titanium
- industrially pure
- mixing yoghurt
- wear
- resisting property
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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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- Crystallography & Structural Chemistry (AREA)
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- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of methods for improving industrially pure titanium wear-resisting property by mixing yoghurt, the following steps are included: 1) be stirred friction working process to titanium to be processed, stirring-head revolving speed is 150~250rpm, process velocity is 10~50mm/min, needs to carry out pressure cooling in process；2) processing rear surface arc lines is polished flat；3) sample of step 1) preparation is subjected to 520~570 DEG C of heat treatments, handles 30~60min of time.By mixing yoghurt to crystal grain refinement, in conjunction with fine heat treatment process, crystal grain refinement can be achieved and regulate and control grained material internal reservoir energy, obtain the lesser industrially pure titanium aplitic texture tissue of stress, the technique can effectively adjust industrially pure titanium processing hardening level, the wear-resistant tissue signature being optimal after crystal grain refinement.Technique through the invention can effectively improve industrially pure titanium wear-resisting property, can expand the use scope of industrially pure titanium.
Description
Technical field
The invention belongs to metal working technical areas, and in particular to a kind of resistance to by mixing yoghurt raising industrially pure titanium
The method for grinding performance.
Background technique
Titanium or titanium alloy have many advantages, such as specific strength is high, density it is small (40%) smaller than steel, corrosion resistance is strong, heat resistance is high,
It is used widely in fields such as aerospace, petrochemical industry, communications and transportation, biomedicines.Conventional titanium alloy is because having low modeling
Property shearing drag, the disadvantages of low work hardening rate and scratch resistant performance are poor, cause titanium or titanium alloy components in military service process
In be worn effect and fail.
Main strengthening mechanism is solution strengthening, processing hardening, refined crystalline strengthening and dispersion-strengtherning in metal material.Except fine grain
Strengthen it is outer, other three kinds of intensifying methods while improving the strength of materials can a degree of loss material plasticity.Therefore, carefully
Changing crystal grain becomes the important channel improved metal material and keep good plasticity.By refining crystal grain, it is comprehensive that titanium alloy can be improved
Mechanical property and wearability.
Mixing yoghurt technology is derived by agitating friction welding technology, utilizes the stirring-head " rotation-stirring-of on-consumable formula
Advance " composite machine movement, so that processing district metal material is undergone severe plastic deformation, stirring area tissue occurs dynamic repeatedly and ties again
Worked structure densification, grain refining and homogenization are realized in brilliant behavior.Using mixing yoghurt technology, optionally refine
Piece surface crystallite dimension improves material surface comprehensive performance.Some researches show that since sample interior is deposited after severe plastic deformation
In machining stress, the mechanical property performance of fine grained texture is influenced.And for micro-nano structure fine grained texture, crystal boundary migration activation energy compared with
It is low, crystal grain easily occurs in annealing and grows up, destroys its aplitic texture.
Summary of the invention
That the present invention provides a kind of equipment requirements is low, easy to operate, controllability is high improves work by mixing yoghurt
The method of the pure titanium wear-resisting property of industry.
Realizing the technical solution of the purpose is:
A method of industrially pure titanium wear-resisting property is improved by mixing yoghurt, comprising the following steps:
1) friction working process is stirred to titanium to be processed, stirring-head revolving speed is 150~250rpm, process velocity
For 10~50mm/min, need to carry out pressure cooling in process；
2) processing rear surface arc lines is polished flat；
3) sample of step 1) preparation is subjected to 520~570 DEG C of heat treatments, handles 30~60min of time.
The mixing yoghurt processing of step 1) carries out under the protection of argon gas.
The mixing yoghurt of step 1) is handled, stirring-head shaft shoulder diameter 16mm, mixing needle length 3mm, mixing needle root
Diameter 6mm, end diameter 4mm, shaft shoulder volume under pressure 0.5mm, 3 ° of stirring-head inclination angle.
It needs to carry out water circulating cooling in the treatment process of step 2).
It is quenched after step 3) heat treatment, accelerates rate of temperature fall.
Beneficial effects of the present invention: crystal grain refinement is carried out to industrially pure titanium by mixing yoghurt, at fine heat
Science and engineering skill obtains the lesser industrially pure titanium aplitic texture tissue of stress, the technique, it can be achieved that grained material internal reservoir is adjustable
It is horizontal that industrially pure titanium processing hardening can be effectively adjusted after crystal grain refinement, the wear-resistant tissue signature being optimal.The present invention couple
Process equipment requirement is low, easy to operate, controllability is high, and technique through the invention can effectively improve industrially pure titanium wear-resisting property,
The use scope of industrially pure titanium can be expanded.
Detailed description of the invention
Fig. 1 is heat treatment front and back mixing yoghurt industrially pure titanium EBSD-BC figure in embodiment 1, wherein (a) is that stirring rubs
Pattern tissue after processing is wiped, is (b) pattern tissue after 550 DEG C of -30min heat treatments.
Fig. 2 is polishing scratch 3D pattern after mixing yoghurt industrially pure titanium frictional wear experiment in embodiment 1, wherein (a) is
Sample wear morphology after mixing yoghurt is (b) sample wear morphology after 550 DEG C of -30min heat treatments.
Specific embodiment
Below with reference to embodiment, the invention will be further described, but not thereby limiting the invention.
Experimental method in following embodiments is unless otherwise instructed conventional method.
Following embodiment is all made of tungsten-rhenium alloy stirring-head and is stirred friction working process, stirring-head shaft shoulder diameter
16mm, mixing needle length 3mm, mixing needle root diameter (RD) 6mm, end diameter 4mm.Experimental material selects annealed state industrially pure titanium
TA2 plate falls the surface and oil contaminant of sample using ultrasonic cleaning before processing.
Titanium or titanium alloy be machined at 550 DEG C or more oxidizable, therefore needs whole process to be passed through in mixing yoghurt
High-purity argon gas protects plate, while preventing plate from oxidation stain problem occurring in process.
Frictional wear experiment uses reciprocating friction Wear Tester test material wear-resisting property, load 10N, frequency 2Hz, row
Journey 1cm, testing time 30min.
Embodiment 1
It operates in accordance with the following steps:
1) mixing yoghurt technique uses stirring-head revolving speed 180rpm, process velocity 25mm/min, shaft shoulder volume under pressure
Cooling (using water circulating cooling) is forced to plate in process to keep straining storage energy in 0.5mm, 3 ° of stirring-head inclination angle
With the fine grained texture for recrystallizing generation after severe plastic deformation.
2) by mixing yoghurt, treated that sample surfaces polish flat, and water circulating cooling is utilized in bruting process.
3) heat-treatment furnace is heated to 550 DEG C, to temperature after be put into step 2) treated board samples, taken after keeping the temperature 30min
It quenches out.
Untreated industrially pure titanium wear rate is 1.5 × 10-3mm3/N·m.By step 1) of the present invention, 2) after plate
EBSD-BC figure as shown in Figure 1a, sample wear morphology is as shown in Figure 2 a, industrially pure titanium wear rate be 8.3 × 10-4mm3/N·
m；Be then followed by by step 3) heat treatment after plate EBSD-BC figure as shown in Figure 1 b, sample wear morphology it is as shown in Figure 2 b,
Industrially pure titanium wear rate is 5.0 × 10-4mm3/N·m.Fine grain industrially pure titanium is compared with the pure titanium mill of coarse-grain after step process of the present invention
Loss rate reduces 67%.
Embodiment 2
It operates in accordance with the following steps:
1) mixing yoghurt technique uses stirring-head revolving speed 180rpm, process velocity 25mm/min, shaft shoulder volume under pressure
0.5mm, 3 ° of stirring-head inclination angle.After forcing cooling to plate in process to keep strain storage energy and severe plastic deformation
Recrystallize the fine grained texture generated.
2) by mixing yoghurt, treated that sample surfaces polish flat, and water circulating cooling is utilized in bruting process.
3) heat-treatment furnace is heated to 550 DEG C, to temperature after be put into sample, take out quenching after keeping the temperature 60min.
Untreated industrially pure titanium wear rate is 1.5 × 10-3mm3/N·m.By step 1) of the present invention, 2) after heat at
Industrially pure titanium wear rate is 8.3 × 10 before managing-4mm3/ Nm is then followed by and is heat-treated postindustrial pure titanium wear rate by step 3)
It is 7.2 × 10-4mm3/N·m.Fine grain industrially pure titanium is reduced compared with the pure titanium wear rate of coarse-grain after step process of the present invention
52%.
Embodiment 3
It operates in accordance with the following steps:
1) mixing yoghurt technique uses stirring-head revolving speed 250rpm, process velocity 10mm/min, shaft shoulder volume under pressure
0.5mm, 3 ° of stirring-head inclination angle.After forcing cooling to plate in process to keep strain storage energy and severe plastic deformation
Recrystallize the fine grained texture generated.
2) by mixing yoghurt, treated that sample surfaces polish flat, and water circulating cooling is utilized in bruting process.
3) heat-treatment furnace is heated to 570 DEG C, to temperature after be put into sample, take out quenching after keeping the temperature 30min.
Untreated industrially pure titanium wear rate is 1.5 × 10-3mm3/N·m.By step 1) of the present invention, 2) after heat at
Industrially pure titanium wear rate is 9.4 × 10 before managing-4mm3/ Nm is then followed by and is heat-treated postindustrial pure titanium wear rate by step 3)
It is 5.9 × 10-4mm3/N·m.Fine grain industrially pure titanium is reduced compared with the pure titanium wear rate of coarse-grain after step process of the present invention
61%.
Embodiment 4
It operates in accordance with the following steps:
1) mixing yoghurt technique uses stirring-head revolving speed 150rpm, process velocity 50mm/min, shaft shoulder volume under pressure
0.5mm, 3 ° of stirring-head inclination angle.After forcing cooling to plate in process to keep strain storage energy and severe plastic deformation
Recrystallize the fine grained texture generated.
2) by mixing yoghurt, treated that sample surfaces polish flat, and water circulating cooling is utilized in bruting process.
3) heat-treatment furnace is heated to 520 DEG C, to temperature after be put into sample, take out quenching after keeping the temperature 60min.
Untreated industrially pure titanium wear rate is 1.5 × 10-3mm3/N·m.By step 1) of the present invention, 2) after heat at
Industrially pure titanium wear rate is 8.7 × 10 before managing-4mm3/ Nm is then followed by and is heat-treated postindustrial pure titanium wear rate by step 3)
It is 5.5 × 10-4mm3/N·m.Fine grain industrially pure titanium is reduced compared with the pure titanium wear rate of coarse-grain after step process of the present invention
63%.
Claims (5)
1. a kind of method for improving industrially pure titanium wear-resisting property by mixing yoghurt, which comprises the following steps:
1) friction working process is stirred to titanium to be processed, stirring-head revolving speed is 150~250rpm, process velocity 10
~50mm/min needs to carry out pressure cooling in process；
2) processing rear surface arc lines is polished flat；
3) sample of step 1) preparation is subjected to 520~570 DEG C of heat treatments, handles 30~60min of time.
2. the method as described in claim 1 for improving industrially pure titanium wear-resisting property by mixing yoghurt, which is characterized in that
The mixing yoghurt processing of step 1) carries out under the protection of argon gas.
3. the method as claimed in claim 1 or 2 for improving industrially pure titanium wear-resisting property by mixing yoghurt, feature exist
In, the mixing yoghurt processing of step 1), stirring-head shaft shoulder diameter 16mm, mixing needle length 3mm, mixing needle root diameter (RD)
6mm, end diameter 4mm, shaft shoulder volume under pressure 0.5mm, 3 ° of stirring-head inclination angle.
4. the method as described in claim 1 for improving industrially pure titanium wear-resisting property by mixing yoghurt, which is characterized in that
It needs to carry out water circulating cooling in the treatment process of step 2).
5. the method as described in claim 1 for improving industrially pure titanium wear-resisting property by mixing yoghurt, which is characterized in that
It is quenched after step 3) heat treatment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080592.7A CN109182936B (en) | 2018-09-17 | 2018-09-17 | Method for improving wear resistance of industrial pure titanium through stirring friction processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080592.7A CN109182936B (en) | 2018-09-17 | 2018-09-17 | Method for improving wear resistance of industrial pure titanium through stirring friction processing |
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| CN109182936A true CN109182936A (en) | 2019-01-11 |
| CN109182936B CN109182936B (en) | 2020-08-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457299A (en) * | 2022-01-27 | 2022-05-10 | 江苏理工学院 | Processing method for refining Ti-V alloy grains |
| CN115627330A (en) * | 2022-08-17 | 2023-01-20 | 燕山大学 | Treatment process for strengthening pure metal low-angle grain boundary |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1321199A2 (en) * | 2001-12-18 | 2003-06-25 | The Boeing Company | Method for preparing ultra-fine grain titanium and titanium-alloy articles and articles prepared thereby |
| CN104060205A (en) * | 2013-11-28 | 2014-09-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous annealing method of pure titanium roll |
| CN107858617A (en) * | 2017-11-06 | 2018-03-30 | 重庆理工大学 | The method that low-rotate speed mixing yoghurt was modified and prepared wear-resistant titanium surface to titanium surface |
-
2018
- 2018-09-17 CN CN201811080592.7A patent/CN109182936B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1321199A2 (en) * | 2001-12-18 | 2003-06-25 | The Boeing Company | Method for preparing ultra-fine grain titanium and titanium-alloy articles and articles prepared thereby |
| CN104060205A (en) * | 2013-11-28 | 2014-09-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous annealing method of pure titanium roll |
| CN107858617A (en) * | 2017-11-06 | 2018-03-30 | 重庆理工大学 | The method that low-rotate speed mixing yoghurt was modified and prepared wear-resistant titanium surface to titanium surface |
Non-Patent Citations (1)
| Title |
|---|
| 胥桥梁等: "搅拌摩擦加工细晶TA2纯钛及其热稳定性研究", 《重庆理工大学学报（自然科学）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114457299A (en) * | 2022-01-27 | 2022-05-10 | 江苏理工学院 | Processing method for refining Ti-V alloy grains |
| CN115627330A (en) * | 2022-08-17 | 2023-01-20 | 燕山大学 | Treatment process for strengthening pure metal low-angle grain boundary |
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| Publication number | Publication date |
|---|---|
| CN109182936B (en) | 2020-08-25 |
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