CN1068854A - High-temperature corrosion resistance titanium alloy - Google Patents
High-temperature corrosion resistance titanium alloy Download PDFInfo
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- CN1068854A CN1068854A CN 91104786 CN91104786A CN1068854A CN 1068854 A CN1068854 A CN 1068854A CN 91104786 CN91104786 CN 91104786 CN 91104786 A CN91104786 A CN 91104786A CN 1068854 A CN1068854 A CN 1068854A
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Abstract
Titanium is the superior metallic substance of solidity to corrosion, and existing ability high temperature seawater corrosion titanium alloy intensity is on the low side, and the higher non-refractory sea-water corrosion of intensity.Ti-3Al-1Mo-1Zr-0.6Ni alloy of the present invention, promptly high temperature resistant sea-water corrosion have moderate high temperature and 350 ℃ of intensity again, and good welding performance particularly reaches in 180 ℃ of high temperature seawaters in temperature, and anti-crevice corrosion behavior is good, and stress corrosion does not take place.Alloy of the present invention can be produced plate, rod, forging, tubing etc.Alloy of the present invention only contains non-rare precious metals such as Mo, Ni, Zr, can reduce cost, and is convenient to mass production and uses.
Description
High-temperature corrosion resistance titanium alloy of the present invention (Ti-31) is high temperature resistant sea-water corrosion, the corrosion resistant Ti alloy that welding property is good.
The corrosion-resistant material that the objective of the invention is to solve high temperature seawater replaces existing corrosion resistant Ti alloy.
Titanium is that specific tenacity is big, the metallic substance that solidity to corrosion is superior.Particularly under oxidisability corrosive environments such as nitric acid, chloric acid and other oxide etch environment, solidity to corrosion is superior, and various in the world at present corrosion resistant Ti alloys are as alloys such as Ti-0.2Pa, Ti-0.3Mo-0.8Ni, be suitable for using in the high warm and humid chlorine, resist and stitched the crack corrosion.But intensity is on the low side; TA5, Ti-6211, the 48-OT3 equal strength is higher but generally be not suitable in the high temperature seawater, for improving the performance of corrosion resistant Ti alloy, high-temperature corrosion resistance titanium alloy of the present invention, combine the advantage of above-mentioned two class alloys, be high temperature resistant sea-water corrosion, moderate strength, high plasticity and toughness arranged again, be suitable for multiple application.
High-temperature corrosion resistance titanium alloy of the present invention (Ti-31) is a kind of medium tenacity, high-ductility, high-ductility, high temperature resistant sea-water corrosion, the new corrosion resistant Ti alloy that welding property is good, and performance is shown in table 1～6.Hot workability with superior anti-seawater corrosion performance.Ti-31 alloy high-temp sea-water corrosion performance is shown in table 7～8, particularly be in 180 ℃ of high temperature seawaters, no matter be base material in temperature, or uniform corrosion, crevice corrosion, stress corrosion does not take place weld seam, the responsive little K of stress corrosion fracture in the normal temperature seawater
SCC/ K
J0.2＞0.75.350 ℃, creep rupture strength was tall and big in 350MPa in 3000 hours, and apparently higher than existing titanium alloy, the Ti-31 alloy strength is higher than Ti-0.2Pa, Ti-0.3Mo-0.8Ni, and plasticity is higher than equality strength titanium alloys such as TA5.
High-temperature corrosion resistance titanium alloy of the present invention (Ti-31), be Ti-Al-Mo-Ni-Zr(V) be multicomponent alloy, nominal composition is Ti-3Al-1Mo-1Zr-0.6Ni(2V) (wt%), elements such as the Mo that alloy contains, Ni, Zr, V belong to non-rare precious metal, price is lower than Pa, Ta, Nb, can reduces the cost of Ti-31 alloy, is convenient to mass production and application.
The intensity of the Al principal security alloy in the high-temperature corrosion resistance titanium alloy of the present invention, content are that 2.5～3.2%.Al content is lower than 2.5% o'clock undercapacity, and it is too high to be higher than 3.2% o'clock intensity, and plasticity is low.Mo, Ni are mainly used in the high temperature resistance sea-water corrosion ability that improves titanium alloy, improve high temperature resistant crevice corrosion ability, therefore can guarantee under the high temperature resistant sea-water corrosion condition, and Mo, the Ni add-on needn't be many, many mechanical propertys that influence on the contrary.Mo content is 0.5～1.5% in the Ti-31 alloy, and when Mo content surpassed 1.5%, cold-reduced sheet unit elongation, bending angle obviously descended.High in addition Mo alloy weldability is also bad.As shown in Figure 1, A is a hot-rolled sheet room temperature tensile performance among the figure, impact property, and B is 350 ℃ of tensile properties of hot-rolled sheet, and C is the room temperature tensile and the bending angle performance of cold-reduced sheet, and D is 350 ℃ of tensile properties of cold-reduced sheet.Ni is the refinement ingot structure obviously, improves the high temperature resistance seawater crevice corrosion ability of alloy, but therefore the plasticity of Ni loss cold-reduced sheet guaranteeing that Ni content is controlled at 0.3%～1.0% under the ability of high temperature resistance seawater slit.It is bad that Ni content is lower than 0.3% slit and corrosion resistant ability, and it is bad to be higher than 1.0% cold-forming property.Zr is a neutral element, and is not obvious to the strengthening effect of alloy, but can prevent microstructure coarsening in the welding process, improving welding property, and can improve corrosion stability.Adding 0.8%～2.0% is exactly to achieve the goal.As shown in Figure 2.V can improve alloy strength, but can reduce hot-rolled sheet plasticity and impelling strength, as shown in Figure 3.But can improve the bending property of cold-reduced sheet, add 2.0% and get final product.
Table 5 is forged also (400 * 80 millimeters of φ) performance
Example 1:
Use the vacuum consumable electrode arc furnace secondary smelting, smelting parameter is: electric current 8-8.5KA, and voltage 28-32V cooled off 2 hours, and being smelted into ingot is φ 296mm, weighs 220 kilograms.The formulated component of alloy is: A2.85wt/%, and M1.85wt%, Ni0.65wt%, Zr0.9wt%, the actual analysis composition is: Al2.80wt%, Mo0.88wt%, Ni0.5wt%, Zr0.8wt%.
Mechanical property
Example 2:
Use the vacuum consumable electrode arc furnace secondary smelting, smelting parameter is that electric current is 1.6KA, voltage 28V cooling 1 hour.The ingot of melting is φ 90mm, weighs 5 kilograms.Alloy proportion is Al2.8wt%.Mo1wt%、Ni0.8wt%、Zr1wt%、V1wt%。The actual analysis value is Al2.5%, Mo1.10%, Ni0.74%, Zr1.03%, V0.98%.
Mechanical property
Claims (2)
1, a kind of corrosion resistant Ti alloy, high-temperature corrosion resistance titanium alloy of the present invention is characterized in that alloy of the present invention is a Ti-Al-Mo-Ni-Zr system, and its weight percent is: Al is 0.5-3.2%, and Mo is 0.5～1.5%, and Ni is 0.3～1.0%, and Zr is 0.8～2.0%, and surplus is Ti.
2,, except that containing Al, Mo, Ni, Zr, can also add the V of 2wt%, can improve the cold-bending property of alloy of the present invention like this according to the said high-temperature corrosion resistance titanium alloy of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91104786 CN1068854A (en) | 1991-07-22 | 1991-07-22 | High-temperature corrosion resistance titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91104786 CN1068854A (en) | 1991-07-22 | 1991-07-22 | High-temperature corrosion resistance titanium alloy |
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| CN1068854A true CN1068854A (en) | 1993-02-10 |
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| CN 91104786 Pending CN1068854A (en) | 1991-07-22 | 1991-07-22 | High-temperature corrosion resistance titanium alloy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036605C (en) * | 1995-02-15 | 1997-12-03 | 西北有色金属研究院 | 550MPa grade nitric acid rust resisting titanium alloy |
| CN101886191A (en) * | 2010-07-14 | 2010-11-17 | 南京信息工程大学 | Corrosion-resistant and abrasion-resistant titanium alloy and preparation method thereof |
| CN102212716A (en) * | 2011-05-06 | 2011-10-12 | 中国航空工业集团公司北京航空材料研究院 | Low-cost alpha and beta-type titanium alloy |
| CN104404299A (en) * | 2014-11-21 | 2015-03-11 | 宝鸡石油钢管有限责任公司 | Titanium alloy continuous oil pipe and manufacturing method thereof |
| CN108929971A (en) * | 2017-05-24 | 2018-12-04 | 江苏天工科技股份有限公司 | A kind of titanium alloy suitable for high-temperature work environment |
| CN114959360A (en) * | 2022-06-16 | 2022-08-30 | 昆明理工大学 | Corrosion-resistant titanium alloy, preparation method thereof and corrosion-resistant flexible bearing |
| CN115896540A (en) * | 2022-11-16 | 2023-04-04 | 哈尔滨工业大学 | Ti-Mo-Ni-Al-Zr corrosion-resistant titanium alloy and preparation method thereof |
| CN116716501A (en) * | 2023-08-07 | 2023-09-08 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium alloy for aerospace and smelting process thereof |
-
1991
- 1991-07-22 CN CN 91104786 patent/CN1068854A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036605C (en) * | 1995-02-15 | 1997-12-03 | 西北有色金属研究院 | 550MPa grade nitric acid rust resisting titanium alloy |
| CN101886191A (en) * | 2010-07-14 | 2010-11-17 | 南京信息工程大学 | Corrosion-resistant and abrasion-resistant titanium alloy and preparation method thereof |
| CN101886191B (en) * | 2010-07-14 | 2011-10-12 | 南京信息工程大学 | Corrosion-resistant and abrasion-resistant titanium alloy and preparation method thereof |
| CN102212716A (en) * | 2011-05-06 | 2011-10-12 | 中国航空工业集团公司北京航空材料研究院 | Low-cost alpha and beta-type titanium alloy |
| CN102212716B (en) * | 2011-05-06 | 2013-03-27 | 中国航空工业集团公司北京航空材料研究院 | Low-cost alpha and beta-type titanium alloy |
| CN104404299B (en) * | 2014-11-21 | 2016-10-12 | 宝鸡石油钢管有限责任公司 | A kind of titanium alloy coiled tubing and manufacture method |
| CN104404299A (en) * | 2014-11-21 | 2015-03-11 | 宝鸡石油钢管有限责任公司 | Titanium alloy continuous oil pipe and manufacturing method thereof |
| CN108929971A (en) * | 2017-05-24 | 2018-12-04 | 江苏天工科技股份有限公司 | A kind of titanium alloy suitable for high-temperature work environment |
| CN114959360A (en) * | 2022-06-16 | 2022-08-30 | 昆明理工大学 | Corrosion-resistant titanium alloy, preparation method thereof and corrosion-resistant flexible bearing |
| CN114959360B (en) * | 2022-06-16 | 2023-01-24 | 昆明理工大学 | Corrosion-resistant titanium alloy, preparation method thereof and corrosion-resistant flexible bearing |
| CN115896540A (en) * | 2022-11-16 | 2023-04-04 | 哈尔滨工业大学 | Ti-Mo-Ni-Al-Zr corrosion-resistant titanium alloy and preparation method thereof |
| CN115896540B (en) * | 2022-11-16 | 2024-01-30 | 哈尔滨工业大学 | Ti-Mo-Ni-Al-Zr corrosion-resistant titanium alloy and preparation method thereof |
| CN116716501A (en) * | 2023-08-07 | 2023-09-08 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium alloy for aerospace and smelting process thereof |
| CN116716501B (en) * | 2023-08-07 | 2023-10-31 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium alloy for aerospace and smelting process thereof |
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