CN105274391A - TC4 titanium alloy and performance optimization technology thereof - Google Patents
TC4 titanium alloy and performance optimization technology thereof Download PDFInfo
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- CN105274391A CN105274391A CN201410262502.1A CN201410262502A CN105274391A CN 105274391 A CN105274391 A CN 105274391A CN 201410262502 A CN201410262502 A CN 201410262502A CN 105274391 A CN105274391 A CN 105274391A
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Abstract
The invention discloses a TC4 titanium alloy which is characterized by comprising the following ingredients, by weight, iron being less than or equal to 0.30%, carbon being less than or equal to 0.10%, nitrogen being less than or equal to 0.05%, hydrogen being less than or equal to 0.015%, oxygen being less than or equal to 0.20%, 5.5-6.8% of aluminium, 3.5-4.5% of vanadium and the rest of titanium. Forging heating temperature is 840-920 DEG C, and annealing temperature is 810-840 DEG C.
Description
Technical field
The present invention relates to a kind of TC4 titanium alloy and performance optimization technique thereof.
Background technology
Titanium alloy has that intensity is high and density is little, good mechanical property, toughness and etch resistant properties fine.In addition, the processing performance of titanium alloy is poor, machining difficulty, in hot-work, is very easy to absorb the impurity such as hydrogen-oxygen nitrogen carbon.Also have resistance to abrasion poor, complex manufacturing.The suitability for industrialized production of titanium starts for 1948.The needs of Aviation Industry, make Ti industry with every year on average about 8% rate of growth development.World's titanic alloy machining material annual production has reached more than 40,000 tons, nearly 30 kinds of the titanium alloy trade mark.
Titanium alloy is mainly used in making aircraft engine compressor part, is secondly the structural part of rocket, guided missile and high-speed aircraft.The mid-1960s, titanium and titanium alloys is applied in general industry, for making the electrode of electrolytic industry, the condenser in power house, the well heater of petroleum refining and sea water desaltination and environment pollution control device etc.Titanium and titanium alloys has become a kind of corrosion resistance structure material.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of TC4 titanium alloy and performance optimization technique thereof, by the casting temp in optimized alloy building-up process and annealing temperature, to obtain the alloy product of excellent performance.
Technical scheme of the present invention is: a kind of TC4 titanium alloy, and the massfraction of component is: iron≤0.40, carbon≤0.60, nitrogen≤0.1, hydrogen≤0.1, oxygen≤0.6, aluminium 5 ~ 7, vanadium 2.5 ~ 5, and all the other are titanium.
A kind of TC4 titanium alloy performance optimization technique, Forge Heating temperature is 840-920 DEG C, and annealing temperature is 810-840 DEG C.
Beneficial effect of the present invention: TC4 alloy, when two-phase region isothermal forging, can obtain equiaxed structure, and with the rising of Heating temperature, the primary alpha phase content in alloy structure reduces.Relatively less Deng axle α phase, sheet α phase increases to some extent.The axles such as α Xiang You change sheet into, and the plasticity of this tissue decreases, and fracture toughness increases.Improve Forge Heating temperature, temperature-room type plasticity and the impelling strength of TC4 alloy reduce gradually, and the trend that intensity is improved.The trend that fracture toughness property is improved equally with the raising of Forge Heating temperature.Tensile strength after TC4 titanium alloy common annealing is between 930 ~ 1100MPa, and its tensile strength is the trend of first falling rear liter with the rising of annealing temperature, and the Schwellenwert of intensity is about 700 ~ 750 DEG C appearance.
Embodiment
Embodiment 1
A kind of TC4 titanium alloy, the massfraction of component is: iron≤0.30, carbon≤0.10, nitrogen≤0.05, hydrogen≤0.015, oxygen≤0.20, aluminium 5.5 ~ 6.8, vanadium 3.5 ~ 4.5, all the other are titanium, and above-mentioned raw materials is added 4h at 840 DEG C, and then rear casting anneals at 810 DEG C and get final product.
Embodiment 2
A kind of TC4 titanium alloy, the massfraction of component is: iron≤0.30, carbon≤0.10, nitrogen≤0.05, hydrogen≤0.015, oxygen≤0.20, aluminium 5.5 ~ 6.8, vanadium 3.5 ~ 4.5, all the other are titanium, and above-mentioned raw materials is added 4h at 900 DEG C, and then rear casting anneals at 825 DEG C and get final product
Embodiment 3
A kind of TC4 titanium alloy, the massfraction of component is: iron≤0.30, carbon≤0.10, nitrogen≤0.05, hydrogen≤0.015, oxygen≤0.20, aluminium 5.5 ~ 6.8, vanadium 3.5 ~ 4.5, all the other are titanium, and above-mentioned raw materials is added 4h at 920 DEG C, and then rear casting anneals at 840 DEG C and get final product.
Claims (2)
1. a TC4 titanium alloy, is characterized in that: the massfraction of component is: iron≤0.30, carbon≤0.10, nitrogen≤0.05, hydrogen≤0.015, oxygen≤0.20, aluminium 5.5 ~ 6.8, vanadium 3.5 ~ 4.5, and all the other are titanium.
2. a kind of TC4 titanium alloy performance optimization technique as claimed in claim 1, it is characterized in that: Forge Heating temperature is 840-920 DEG C, annealing temperature is 810-840 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262502.1A CN105274391A (en) | 2014-06-13 | 2014-06-13 | TC4 titanium alloy and performance optimization technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262502.1A CN105274391A (en) | 2014-06-13 | 2014-06-13 | TC4 titanium alloy and performance optimization technology thereof |
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| CN105274391A true CN105274391A (en) | 2016-01-27 |
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| CN201410262502.1A Pending CN105274391A (en) | 2014-06-13 | 2014-06-13 | TC4 titanium alloy and performance optimization technology thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109355606A (en) * | 2018-12-11 | 2019-02-19 | 陕西宏远航空锻造有限责任公司 | A method of improving TC4 forging intensity |
| CN110184499A (en) * | 2019-06-28 | 2019-08-30 | 西北有色金属研究院 | A kind of microalloying method improving TC4 titanium alloy strength level |
| CN110997957A (en) * | 2017-07-18 | 2020-04-10 | 卡本特科技公司 | Customized titanium alloy, TI-64,23+ |
| CN113462929A (en) * | 2021-07-01 | 2021-10-01 | 西南交通大学 | High-strength high-toughness alpha + beta type titanium alloy material and preparation method thereof |
-
2014
- 2014-06-13 CN CN201410262502.1A patent/CN105274391A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110997957A (en) * | 2017-07-18 | 2020-04-10 | 卡本特科技公司 | Customized titanium alloy, TI-64,23+ |
| CN109355606A (en) * | 2018-12-11 | 2019-02-19 | 陕西宏远航空锻造有限责任公司 | A method of improving TC4 forging intensity |
| CN109355606B (en) * | 2018-12-11 | 2020-10-20 | 陕西宏远航空锻造有限责任公司 | Method for improving strength of TC4 forge piece |
| CN110184499A (en) * | 2019-06-28 | 2019-08-30 | 西北有色金属研究院 | A kind of microalloying method improving TC4 titanium alloy strength level |
| CN110184499B (en) * | 2019-06-28 | 2020-06-05 | 西北有色金属研究院 | Micro-alloying method for improving strength level of TC4 titanium alloy |
| CN113462929A (en) * | 2021-07-01 | 2021-10-01 | 西南交通大学 | High-strength high-toughness alpha + beta type titanium alloy material and preparation method thereof |
| CN113462929B (en) * | 2021-07-01 | 2022-07-15 | 西南交通大学 | High-strength high-toughness alpha + beta type titanium alloy material and preparation method thereof |
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Application publication date: 20160127 |
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| WD01 | Invention patent application deemed withdrawn after publication |