CN108950263A - A kind of preparation method of high impact toughness TA24 sheet alloy - Google Patents
A kind of preparation method of high impact toughness TA24 sheet alloy Download PDFInfo
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- CN108950263A CN108950263A CN201810687718.0A CN201810687718A CN108950263A CN 108950263 A CN108950263 A CN 108950263A CN 201810687718 A CN201810687718 A CN 201810687718A CN 108950263 A CN108950263 A CN 108950263A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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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
Abstract
In order to solve the problems, such as that TA24 sheet alloy impact flexibility is insufficient in the prior art, the invention proposes a kind of preparation methods of high impact toughness TA24 sheet alloy, link, rolling link, heat treatment link, surface treatment link are forged by ingot casting melting link, slab, obtains finished product plate.The present invention by slab forge link by stand-by ingot casting within the scope of 1050~1150 DEG C after monophase field of at least one fire time or more forges, then in temperature range Tβ‑60~TβIt carries out changing forging in -20 DEG C, the coarse as-cast structure in rectangular slab is sufficiently broken, and the TA24 sheet alloy even tissue made has high impact toughness and strong plasticity and matching, meets Marine engineering application requirement.
Description
Technical field
The present invention relates to TA24 sheet alloy preparation fields, concretely relate to a kind of preparation side of TA24 sheet alloy
Method, the TA24 sheet alloy obtained using this method have high impact toughness.
Background technique
The nearly α alloy of TA24 alloy system, nominal composition Ti-3Al-2Mo-2Zr are one kind of China's designed, designed development
Strength titanium alloy in 730MPa grades, have good corrosion resistance, weldability and it is easily molded the features such as, be widely used in Ship Welding
Structural member.To continue various impacts, the Marine Materials such as receiving seawater, floating ice and stormy waves during being on active service due to ship must
Must have sufficiently high impact flexibility.Ocean engineering is generally relatively low with titanium alloy impact flexibility at present, such as according to the present invention
TA24 alloy, the alloy sheets impact flexibility about 58J/cm of common process production2；Ship often uses Ti80 and TA5-A titanium alloy, punching
Hitting toughness is about 57~70J/cm2.It does a lot of work to improve the impact property forefathers of titanium alloy, performance is also in certain journey
It is improved on degree, but whole titanium alloy impact flexibility is also in a reduced levels, such as Patent No. CN 106148761
A, the HI high impact titanium alloy that 107574335 A of CN and 107541615 A of CN are invented, through its impact of experiment and in-site measurement
Toughness is no more than 80J/cm2.Therefore, to meet the Marine engineering application increasingly upgraded, ship-lifting equips shock resistance safety
Surplus and service life prepare a kind of high impact toughness TA24 sheet alloy and have very important significance.
Summary of the invention
In order to solve the problems, such as that TA24 sheet alloy impact flexibility is insufficient in the prior art, the invention proposes a kind of Gao Chong
The preparation method for hitting toughness TA24 sheet alloy has good impact resistance tough using TA24 sheet alloy prepared by this method
Property, it is especially suitable for the use of the impact resistances equipment such as shipbuilding.
A kind of preparation method of the high impact toughness TA24 sheet alloy, its technical solution is that, including following step
It is rapid:
The first step, ingot casting melting link: zero level little particle titanium sponge, sponge zirconium, aluminium molybdenum alloys, aluminium shot, pure iron and two are selected
Titanium oxide powder is prepared into electrode block according to the ratio, and stand-by ingot casting is made using 2~3 meltings of vacuum consumable electrode arc furnace, and utilize
Metallographic method surveys phase transformation point value Tβ；
Second step, slab forge link: the stand-by ingot casting that ingot casting melting link is obtained is in phase transformation point value TβAbove and 1050
It is forged within the scope of~1150 DEG C through above monophase field of at least one fire time, every fire time is through twice or the above upsetting pull, fire is secondary to be deformed
Amount 55 ~ 80%, to be sufficiently crushed coarse as-cast structure；Later in temperature range Tβ-60~TβIt carries out changing forging in -20 DEG C, through at least
Upsetting pull, every fire time deflection 50 ~ 85% become behind then shaped, milling face and roll rectangular slab；
Third step, rolling link: the slab obtained rolling of forging link is rolled with rectangular slab through two fire as finished product plate,
Every fire time is intermediate to be needed to be surface-treated, the defects of to remove face crack, be mingled with；
4th step, heat treatment link: being annealed using air atmosphere, and 600~850 DEG C of annealing temperature；2.0 ~ 5.0min/ of soaking time
Mm, it is air-cooled after coming out of the stove to obtain semifinished sheet；
5th step, surface treatment link: by semifinished sheet by the process of sandblasting, pickling, polishing, its upper and lower surface oxygen is removed
Change skin and defect, obtains the finished product plate for meeting GB/T3621.1-2007 standard.
Further, two fire time rollings used in link are rolled and are respectively as follows: a fiery heating temperature Tβ-50~Tβ- 10 DEG C, deformation
Amount 40~85%；Two fiery heating temperature range Tβ-70~Tβ-20℃；Every fire time deflection 50~80% carries out in the two fiery operations of rolling
Primary commutation；Wherein, the phase transformation point value for the stand-by ingot casting that ingot casting melting link obtains is Tβ。
Had the beneficial effect that brought by the present invention present invention by slab forge link by stand-by ingot casting 1050~
Within the scope of 1150 DEG C after the forging of the monophase field of at least one fire time or more, then in temperature range Tβ-60~TβChanged in -20 DEG C
Forging, the coarse as-cast structure in rectangular slab is sufficiently broken, and the TA24 sheet alloy even tissue made has height
Impact flexibility and strong plasticity and matching, meet Marine engineering application requirement.
Detailed description of the invention
Fig. 1 is the finished product plate organization chart of first embodiment of the invention.
Fig. 2 is the finished product plate organization chart of second embodiment of the invention.
Fig. 3 is the finished product plate organization chart of third embodiment of the invention.
Fig. 4 is the finished product plate organization chart of fourth embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
A kind of preparation method of the high impact toughness TA24 sheet alloy, its technical solution is that, including following step
It is rapid:
The first step, ingot casting melting link: zero level little particle titanium sponge, sponge zirconium, aluminium molybdenum alloys, aluminium shot, pure iron and two are selected
Titanium oxide powder is prepared into electrode block according to the ratio, and stand-by ingot casting is made using 2~3 meltings of vacuum consumable electrode arc furnace, and utilize
Metallographic method surveys phase transformation point value Tβ；
Second step, slab forge link: the stand-by ingot casting that ingot casting melting link is obtained is in phase transformation point value TβAbove and 1050
It is forged within the scope of~1150 DEG C through above monophase field of at least one fire time, every fire time is through twice or the above upsetting pull, fire is secondary to be deformed
Amount 55 ~ 80%, to be sufficiently crushed coarse as-cast structure；Later in temperature range Tβ-60~TβIt carries out changing forging in -20 DEG C, through at least
Upsetting pull, every fire time deflection 50 ~ 85% become behind then shaped, milling face and roll rectangular slab；
Third step, rolling link: the slab obtained rolling of forging link is rolled with rectangular slab through two fire as finished product plate,
Every fire time is intermediate to be needed to be surface-treated, the defects of to remove face crack, be mingled with；
4th step, heat treatment link: being annealed using air atmosphere, and 600~850 DEG C of annealing temperature；2.0 ~ 5.0min/ of soaking time
Mm, it is air-cooled after coming out of the stove to obtain semifinished sheet；
5th step, surface treatment link: by semifinished sheet by the process of sandblasting, pickling, polishing, its upper and lower surface oxygen is removed
Change skin and defect, obtains the finished product plate for meeting GB/T3621.1-2007 standard.
Further, two fire time rollings used in link are rolled and are respectively as follows: a fiery heating temperature Tβ-50~Tβ- 10 DEG C, deformation
Amount 40~85%；Two fiery heating temperature range Tβ-70~Tβ-20℃；Every fire time deflection 50~80% carries out in the two fiery operations of rolling
Primary commutation；Wherein, the phase transformation point value for the stand-by ingot casting that ingot casting melting link obtains is Tβ。
The surface treatment of the rolling link refers to: conventional sheet surface treatment process, such as sandblasting, pickling, polishing.
The equipment that polishing in the surface treatment link uses is conventional mechanical, such as abrasive machine.
Embodiment 1:
The first step, ingot casting melting link: zero level little particle titanium sponge, sponge zirconium, aluminium molybdenum alloys, aluminium shot, pure iron and two are selected
Titanium oxide powder is prepared into electrode block according to the ratio, and the stand-by ingot casting of Φ 440mm is made of 3 meltings of vacuum consumable electrode arc furnace,
Metallographic method surveys transformation temperature TβIt is 950 DEG C.
Second step, slab forge link: fiery 1150 DEG C of the cogging temperature of the stand-by ingot casting one that ingot casting melting link is obtained, warp
Two piers two put a chimney on the stove and make the fire draw time deflection 75%, and two fiery 1050 DEG C of forging temperature of coggings are pulled out, fire time deflection 70% through two piers two；Three fire change
Forging is at 920 DEG C, and through a upsetting pull, fire time deflection 68% becomes rolling 130mm thickness square plate behind then shaped, milling face
Base.
Third step, rolling link: by rolling fiery 950 DEG C of the heating temperature of the thick rectangular slab one of 130mm, rolling process deflection
77%；It is surface-treated after heating once and rolling；Two fiery 930 DEG C of heating temperatures are rolled to finished product thickness 10mm, fire time deflection 67%.
4th step, heat treatment link: being annealed using air atmosphere, and 650 DEG C of annealing temperature, soaking time 45min, after coming out of the stove
It is air-cooled to obtain semifinished sheet.
5th step, surface treatment link: by semifinished sheet by the process of sandblasting, pickling, polishing, following table thereon is removed
Surface oxidized skin and defect obtain finished product plate.
Embodiment 2:
The first step, ingot casting melting link: zero level little particle titanium sponge, sponge zirconium, aluminium molybdenum alloys, aluminium shot, pure iron and two are selected
Titanium oxide powder is prepared into electrode block according to the ratio, and the stand-by ingot casting of Φ 440mm is made of 3 meltings of vacuum consumable electrode arc furnace,
It is 960 DEG C that metallographic method, which surveys transformation temperature,.
Second step, slab forge link: fiery 1150 DEG C of the cogging temperature of the stand-by ingot casting one that ingot casting melting link is obtained, warp
Two piers two put a chimney on the stove and make the fire draw time deflection 76%, and two fiery 1050 DEG C of forging temperature of coggings are pulled out, fire time deflection 68% through two piers two；Three fire change
Forging is at 930 DEG C, and through a upsetting pull, fire time deflection 65% becomes rolling 130mm thickness square plate behind then shaped, milling face
Base.
Third step, rolling link: by rolling fiery 950 DEG C of the heating temperature of the thick rectangular slab one of 130mm, rolling process deflection
66%；It is surface-treated after heating once and rolling；Two fiery 930 DEG C of heating temperatures are rolled to finished product thickness 16mm, fire time deflection 64%.
4th step, heat treatment link: being annealed using air atmosphere, and 680 DEG C of annealing temperature, soaking time 60min, after coming out of the stove
It is air-cooled to obtain semifinished sheet.
5th step, surface treatment link: by semifinished sheet by the process of sandblasting, pickling, polishing, following table thereon is removed
Surface oxidized skin and defect obtain finished product plate.
Embodiment 3:
The first step, ingot casting melting link: zero level little particle titanium sponge, sponge zirconium, aluminium molybdenum alloys, aluminium shot, pure iron and two are selected
Titanium oxide powder is prepared into electrode block according to the ratio, and the stand-by ingot casting of Φ 440mm is made of 3 meltings of vacuum consumable electrode arc furnace,
It is 950 DEG C that metallographic method, which surveys transformation temperature,.
Second step, slab forge link: fiery 1150 DEG C of the cogging temperature of the stand-by ingot casting one that ingot casting melting link is obtained, warp
Two piers two put a chimney on the stove and make the fire draw time deflection 68%, and two fiery 1050 DEG C of forging temperature of coggings are pulled out, fire time deflection 75% through two piers two；Three fire change
Forging is at 920 DEG C, and through a upsetting pull, fire time deflection 65% becomes rolling 150mm thickness square plate behind then shaped, milling face
Base.
Third step, rolling link: by fiery 950 DEG C of the heating temperature of the thick rectangular slab one of 150mm, rolling process deflection 57%；One fire
It is surface-treated after rolling；Two fiery 930 DEG C of heating temperatures are rolled to finished product thickness 24mm, fire time deflection 63%.
4th step, heat treatment link: being annealed using air atmosphere, and 750 DEG C of annealing temperature, soaking time 90min, after coming out of the stove
It is air-cooled to obtain semifinished sheet.
5th step, surface treatment link: by semifinished sheet by the process of sandblasting, pickling, polishing, following table thereon is removed
Surface oxidized skin and defect obtain finished product plate.
Embodiment 4:
The first step, ingot casting melting link: zero level little particle titanium sponge, sponge zirconium, aluminium molybdenum alloys, aluminium shot, pure iron and two are selected
Titanium oxide powder is prepared into electrode block according to the ratio, and the stand-by ingot casting of Φ 440mm is made of 3 meltings of vacuum consumable electrode arc furnace,
It is 955 DEG C that metallographic method, which surveys transformation temperature,.
Second step, slab forge link: fiery 1150 DEG C of the cogging temperature of the stand-by ingot casting one that ingot casting melting link is obtained, warp
Two piers two put a chimney on the stove and make the fire draw time deflection 72%, and two fiery 1050 DEG C of forging temperature of coggings are pulled out, fire time deflection 70% through two piers two；Three fire change
Forging is at 930 DEG C, and through a upsetting pull, fire time deflection 63% becomes rolling 160mm thickness square plate behind then shaped, milling face
Base.
Third step, rolling link: by rolling fiery 950 DEG C of the heating temperature of the thick rectangular slab one of 160mm, rolling process deflection
48%；It is surface-treated after heating once and rolling；Two fiery 930 DEG C of heating temperatures are rolled to finished product thickness 38mm, fire time deflection 55%；
4th step, heat treatment link: being annealed using air atmosphere, 750 DEG C of annealing temperature, soaking time 120min, empty after coming out of the stove
It is cold to obtain semifinished sheet.
5th step, surface treatment link: by semifinished sheet by the process of sandblasting, pickling, polishing, following table thereon is removed
Surface oxidized skin and defect obtain finished product plate.
The product mechanical property of embodiment 1 ~ 4 is shown in Table 1.
Table 1 obtains TA24 alloy sheets performance using the present invention:
Proved according to the content of Fig. 1 ~ 4 and table 1: TA24 titanium alloy plate even tissue prepared by the present invention has high rush
Toughness and the well equal good characteristics of strong plasticity matching are hit, Marine engineering application requirement is met.
The foregoing is merely the preferred embodiment of invention, oneself, is not intended to limit the invention, all in spirit of the invention
With any modifications, equivalent replacements, and improvements made within principle etc., should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of preparation method of high impact toughness TA24 sheet alloy, which comprises the following steps:
The first step, ingot casting melting link: zero level little particle titanium sponge, sponge zirconium, aluminium molybdenum alloys, aluminium shot, pure iron and two are selected
Titanium oxide powder is prepared into electrode block according to the ratio, and stand-by ingot casting is made using 2~3 meltings of vacuum consumable electrode arc furnace, and utilize
Metallographic method surveys phase transformation point value Tβ；
Second step, slab forge link: the stand-by ingot casting that ingot casting melting link is obtained is in phase transformation point value TβAbove and 1050~
It is forged within the scope of 1150 DEG C through above monophase field of at least one fire time, every fire time is through twice or the above upsetting pull, fiery secondary deflection
55 ~ 80%, to be sufficiently crushed coarse as-cast structure；Later in temperature range Tβ-60~TβIt carries out changing forging in -20 DEG C, through at least one
Secondary upsetting pull, every fire time deflection 50 ~ 85% become behind then shaped, milling face and roll rectangular slab；
Third step, rolling link: the slab obtained rolling of forging link is rolled with rectangular slab through two fire as finished product plate,
Every fire time is intermediate to be needed to be surface-treated, the defects of to remove face crack, be mingled with；
4th step, heat treatment link: being annealed using air atmosphere, and 600~850 DEG C of annealing temperature；2.0 ~ 5.0min/ of soaking time
Mm, it is air-cooled after coming out of the stove to obtain semifinished sheet；
5th step, surface treatment link: by semifinished sheet by the process of sandblasting, pickling, polishing, its upper and lower surface oxygen is removed
Change skin and defect, obtains the finished product plate for meeting GB/T3621.1-2007 standard.
2. a kind of preparation method of high impact toughness TA24 sheet alloy according to claim 1, it is characterised in that: roll
Two fire time rollings used in link processed are respectively as follows: a fiery heating temperature Tβ-50~Tβ- 10 DEG C, deflection 40~85%；Two fire heating
Temperature range Tβ-70~Tβ-20℃；Every fire time deflection 50~80% is once commutated in the two fiery operations of rolling；Wherein, ingot casting
The phase transformation point value for the stand-by ingot casting that melting link obtains is Tβ。
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504876A (en) * | 2018-12-24 | 2019-03-22 | 洛阳双瑞精铸钛业有限公司 | A kind of Ti80 cut deal of high impact toughness and the preparation method and application thereof |
| CN111500959A (en) * | 2020-06-09 | 2020-08-07 | 北京工业大学 | Hot processing and heat treatment process for preparing near α type high-temperature titanium alloy layered structure |
| CN112893760A (en) * | 2021-01-20 | 2021-06-04 | 陕西茂凇新材科技有限公司 | Production process of high-strength Ti75 titanium ring |
| CN112916791A (en) * | 2021-01-20 | 2021-06-08 | 陕西茂凇新材科技有限公司 | Production process of high-strength Ti80 titanium ring |
| CN112959004A (en) * | 2021-02-02 | 2021-06-15 | 湖南湘投金天科技集团有限责任公司 | High-strength titanium alloy seal head and preparation method thereof |
| CN113755709A (en) * | 2021-09-10 | 2021-12-07 | 西北有色金属研究院 | Preparation method of Ti80 titanium alloy bar with high impact toughness |
| CN114248080A (en) * | 2021-12-25 | 2022-03-29 | 浙江贝利工具有限公司 | Preparation method of twist drill and twist drill |
| CN114433765A (en) * | 2022-02-08 | 2022-05-06 | 西部钛业有限责任公司 | Preparation method of high-toughness TA31 titanium alloy material |
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| CN1061047A (en) * | 1990-11-02 | 1992-05-13 | 西北有色金属研究院 | Marine titanium alloy and manufacture method |
| CN106636739A (en) * | 2016-10-31 | 2017-05-10 | 西北有色金属研究院 | Moderate-intensity and high-impact-toughness titanium alloy in ocean engineering |
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| CN1061047A (en) * | 1990-11-02 | 1992-05-13 | 西北有色金属研究院 | Marine titanium alloy and manufacture method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504876A (en) * | 2018-12-24 | 2019-03-22 | 洛阳双瑞精铸钛业有限公司 | A kind of Ti80 cut deal of high impact toughness and the preparation method and application thereof |
| CN111500959A (en) * | 2020-06-09 | 2020-08-07 | 北京工业大学 | Hot processing and heat treatment process for preparing near α type high-temperature titanium alloy layered structure |
| CN112893760A (en) * | 2021-01-20 | 2021-06-04 | 陕西茂凇新材科技有限公司 | Production process of high-strength Ti75 titanium ring |
| CN112916791A (en) * | 2021-01-20 | 2021-06-08 | 陕西茂凇新材科技有限公司 | Production process of high-strength Ti80 titanium ring |
| CN112959004A (en) * | 2021-02-02 | 2021-06-15 | 湖南湘投金天科技集团有限责任公司 | High-strength titanium alloy seal head and preparation method thereof |
| CN113755709A (en) * | 2021-09-10 | 2021-12-07 | 西北有色金属研究院 | Preparation method of Ti80 titanium alloy bar with high impact toughness |
| CN113755709B (en) * | 2021-09-10 | 2022-06-24 | 西北有色金属研究院 | Preparation method of Ti80 titanium alloy bar with high impact toughness |
| CN114248080A (en) * | 2021-12-25 | 2022-03-29 | 浙江贝利工具有限公司 | Preparation method of twist drill and twist drill |
| CN114433765A (en) * | 2022-02-08 | 2022-05-06 | 西部钛业有限责任公司 | Preparation method of high-toughness TA31 titanium alloy material |
| CN114433765B (en) * | 2022-02-08 | 2023-05-05 | 西部钛业有限责任公司 | Preparation method of high-strength and high-toughness TA31 titanium alloy material |
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