CN1061047A - Marine titanium alloy and manufacture method - Google Patents
Marine titanium alloy and manufacture method Download PDFInfo
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- CN1061047A CN1061047A CN 90108742 CN90108742A CN1061047A CN 1061047 A CN1061047 A CN 1061047A CN 90108742 CN90108742 CN 90108742 CN 90108742 A CN90108742 A CN 90108742A CN 1061047 A CN1061047 A CN 1061047A
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Abstract
Marine titanium alloy of the present invention is to be the alloy that matrix adds aluminium, molybdenum, zirconium and vanadium with the titanium.The titanium alloy raw material is easy to get, the melting complete processing is easy.Alloy has high fracture toughness property, the sea water corrosion resistant of excellence and good welding property under 730MPa intensity.This alloy is not only applicable to the ship structure material and can be used for chemical industry and other industrial sector.
Description
The not only long-term and contact with sea water of ship structure spare, and bearing the sea pressure that often changes, require the good combination of good anti-seawater stress corrosion performance and intensity, toughness, processibility, weldability again.
Present ship structure spare use material, mainly be copper alloy B30 and stainless steel etc., it is low to facts have proved that B30 exists intensity, anti-pollution sea-water corrosion not, a series of problems such as shock resistance is poor, makes bimetallic material weldprocedure complexity, and the process-cycle is long.At present can be few by the alloy that the naval vessel is selected for use, do not match yet.Particularly tensile strength 730MPa level corrosion resistant Ti alloy does not still have this other marine titanium alloy of level both at home and abroad.The Ti6211 alloy of U.S. development is a 860MPa level alloy, this alloy processing difficulty, and fracture toughness property, stress corrosion performance index are lower.Soviet Union's marine alloy is selected 48T2, T3, T4, T7 etc. for use, and these alloy strengths are all below 680MPa.Once alloy on probation TA5(Ti-4Al-0.005B on the naval vessel), problem such as intensity is the 680MPa level, and finds the alloying constituent spot segregation in application, and the salt stress corrosion performance is very low.
Purpose of the present invention provides a kind of tensile strength peculiar to vessel and is strong in the 730MPa level, toughness titanium alloy and manufacture method.
In order to overcome the shortcoming of existing marine material, marine titanium alloy of the present invention with now use TA5 alloy phase ratio peculiar to vessel, the high 50MPa of strength ratio TA5, have under the good comprehensive performances situation, impelling strength and fracture toughness property value exceed 40% and 20% respectively, and stress corrosion strength factor is 87.6MPa M in seawater
1/2, than high nearly one times of TA5, have good welding property (welding coefficient is 0.9) and good cold and hot working performance, with the TA5 ratio, hot processing temperature is low, and is strong to thermal adaptability, and performance is lower than TA5 to the susceptibility of oxygen.
Marine titanium alloy of the present invention is Ti-Al-Mo-Zr system, Ti-2.0～2.9Al-1.5～3.0Mo-0.5～3.0Zr(Ti75A) and Ti-Al-Mo-Zr-V system, Ti-2.5～2.9Al-1.5～2.5Mo-0.5～1.0Zr-0.5～1.5V(Ti75B), Al content is lower than down insufficient strength in limited time, Al content is higher than in limited time, and stress corrosion performance, fracture toughness property reduce; Mo content is lower than down undercapacity in limited time, and it is bad that content is higher than the welding property of prescribing a time limit; Zr content is lower than down in limited time undercapacity, and content is higher than the cost of alloy height of prescribing a time limit, and performance such as counter stress corrosion has a negative impact; V content is lower than down undercapacity in limited time, and it is bad to be higher than the welding property of prescribing a time limit.
The manufacturing of alloy of the present invention, with titanium sponge, master alloy (Al-Mo(1: 1), Al-V(1: 1)), pure metal, assignment system alloy material proportionately, behind the secondary vacuum consumable arc-melting, 880 ℃～1080 ℃ coggings, 850 ℃～1050 ℃ forgings, 800～950 ℃ rolling, is processed into plate or bar.
Embodiment 1
With titanium sponge, master alloy (Al-Mo, Al-V), pure metal is a raw material, press 2.8%Al, 2.25%Mo, 2.25%Zr preparation Ti75A alloy material, be pressed into circle or square electrode, more several electrodes be welded into consumable electrode, then behind the secondary vacuum arc melting, 880 ℃～1080 ℃ coggings, be processed into plate and bar, total deformation is controlled at 50～80%.Its performance is shown in table 1～table 6.
Embodiment 2
Use titanium sponge, master alloy (Al-Mo, Al-V), pure metal is a raw material, presses 2.7%Al, 1.8%Mo, 0.7%Zr, 0.9%V preparation Ti75B alloy material, be pressed into circle or square electrode, again several electrodes are welded into consumable electrode, then behind the secondary vacuum arc melting, 880 ℃～1080 ℃ coggings, be processed into plate and bar, total deformation is controlled at 50～80%.Its mechanical property is as follows:
σ
bσ
a2δ
5ψ α
k
（MPa） （MPa） （%） （%） （KJ/m
2）
737 668 20 65 1470
Corrosive nature, in 60 ℃ of 3.5%NaCl solution, corrosion speed is 5.1 * 10
-4Mm/a.
Table 1 Ti-75A alloy bar material and sheet material conventional mechanical property
| Heat | State | σ bMPa | σ a2MPa | δ 5% | Ψ % | α kKJ/m 2 | α (degree) |
| 8721 8727 8831 8961 | φ 18mm annealing " " δ=18mm annealing | 739 760 775 757.5 | 685 733 745 680 | 19 18 17.5 19.5 | 68.0 63.5 67.0 49.0 | 1578 1370 1015 | >110 |
The welding property of table 2 Ti-75A alloy
| Heat | State | σ bMPa | σ a2MPa | δ 5% | Ψ % | α kKJ/m 2 | α (degree) |
| 8727 8728 8859 8961 | Joint " weld metal joint | 823 735 797.5 790 | 667 653 715 740 | 12.5 11.8 13.5 11.5 | 47.4 31.5 55.0 | 588 840 1040 | >109 132 ＊ |
* be the welding joint bending angle
The corrosive nature of table 3 Ti-75A alloy
* be the duration of paronite pad between A/B A seam
No pad duration between the B seam
* C/D C indication material value D couple B30 value
The toughness data of table 4 Ti-75A and several alloys relatively
| Alloy | State | Ji KJ／m 2 | J a2KJ／m 2 | K J0.2MPaM 1／2 | K 1CActual measurement MPaM 1／2 |
| Ti-75A TA5 Ti-6Al-4Y TC9 Ti-679 | Slab " " " " | 89.2 35.3 88.0 17.6 12.5 | 131.4 81.4 42 42.9 13.7 | 131.7 103.5 71.9 72.9 40.9 | 108.5 70.7 80.9 49.6 |
Claims (4)
1, a kind of New Marine titanium alloy is characterized in that this titanium alloy, and under reasonable process, alloy has the intensity of 730MPa, has high fracture toughness property simultaneously concurrently, excellent anti-seawater corrosion performance and good welding property.
2, according to the said titanium alloy of claim 1, be to have added elements such as aluminium, molybdenum, zirconium and vanadium in the titanium matrix, its alloy composition is Ti-2.0～2.9Al-1.5～3.0Mo-1.5～3.0Zr(Ti75A) and Ti-2.5～2.9Al-1.5～2.5Mo-0.5～1.0Zr-0.5～1.5V(Ti75B)
3, according to the said reasonable process of claim 1, be after the arc melting of secondary vacuum consumable electrode, cogging temperature is 880～1080 ℃, hot forging temperature is 850～1050 ℃.Hot-rolled temperature is 820～950 ℃.
4, according to the said titanium alloy of claim 1, preparation of raw material is used the master alloy of small grain size (less than φ 12.7mm) titanium sponge and some amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108742 CN1030508C (en) | 1990-11-02 | 1990-11-02 | Titanium alloy for ship and it's production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108742 CN1030508C (en) | 1990-11-02 | 1990-11-02 | Titanium alloy for ship and it's production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1061047A true CN1061047A (en) | 1992-05-13 |
| CN1030508C CN1030508C (en) | 1995-12-13 |
Family
ID=4881112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90108742 Expired - Fee Related CN1030508C (en) | 1990-11-02 | 1990-11-02 | Titanium alloy for ship and it's production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030508C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008978A (en) * | 2011-09-21 | 2013-04-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing titanium plate billet |
| CN103909191A (en) * | 2014-04-10 | 2014-07-09 | 西部钛业有限责任公司 | Method for manufacturing STi80 two-phase titanium alloy plate blanks for ships |
| CN106947885A (en) * | 2016-01-06 | 2017-07-14 | 天津皕劼同创精密钛铸造有限公司 | Strong high-ductility marine titanium alloy and its preparation technology during one kind is new |
| CN107598411A (en) * | 2017-09-08 | 2018-01-19 | 西安西工大超晶科技发展有限责任公司 | A kind of TC11 titanium alloy welding wires and preparation method thereof |
| CN108950263A (en) * | 2018-06-28 | 2018-12-07 | 洛阳双瑞精铸钛业有限公司 | A kind of preparation method of high impact toughness TA24 sheet alloy |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543948B (en) * | 2008-03-28 | 2011-06-08 | 北京有色金属研究总院 | Processing technology of Ti5Mo5V2Cr3Al alloy |
-
1990
- 1990-11-02 CN CN 90108742 patent/CN1030508C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008978A (en) * | 2011-09-21 | 2013-04-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing titanium plate billet |
| CN103909191A (en) * | 2014-04-10 | 2014-07-09 | 西部钛业有限责任公司 | Method for manufacturing STi80 two-phase titanium alloy plate blanks for ships |
| CN103909191B (en) * | 2014-04-10 | 2016-01-13 | 西部钛业有限责任公司 | The preparation method of a kind of naval vessel STi80 diphasic titanium alloy slab |
| CN106947885A (en) * | 2016-01-06 | 2017-07-14 | 天津皕劼同创精密钛铸造有限公司 | Strong high-ductility marine titanium alloy and its preparation technology during one kind is new |
| CN107598411A (en) * | 2017-09-08 | 2018-01-19 | 西安西工大超晶科技发展有限责任公司 | A kind of TC11 titanium alloy welding wires and preparation method thereof |
| CN107598411B (en) * | 2017-09-08 | 2019-11-22 | 西安西工大超晶科技发展有限责任公司 | A kind of TC11 titanium alloy welding wire and preparation method thereof |
| CN108950263A (en) * | 2018-06-28 | 2018-12-07 | 洛阳双瑞精铸钛业有限公司 | A kind of preparation method of high impact toughness TA24 sheet alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030508C (en) | 1995-12-13 |
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