CN101597703A - A kind of titanium alloy Ti-62222 s and preparation method thereof - Google Patents
A kind of titanium alloy Ti-62222 s and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to titanium alloy, is a kind of titanium alloy and preparation method thereof specifically, and alloy composition is by weight percentage: the Ti surplus, Al 5.3～6.10%, and Sn 1.80～2.20%, and Zr 1.80～2.20%, Mo 1.80～2.20%, Cr 1.80～2.20%, and Si 0.13～0.19%, Fe＜0.08%, C＜0.08%, N≤0.03%, H≤0.015%, O≤0.12%; Smelting technique parameter: molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current and feeding electric current 2kA～10kA; Preparation process: at first prepare master alloy AlSn50, AlCr50, AlMo60, secondly by budget prepare electrode, electrode oven dry, electrode welding, shove charge, melting, cool off, come out of the stove, railway carriage, sampling analysis; Advantage of the present invention: add the crystal grain thinning of this alloy of silicon, be easy to processing and forge, reach (1100～1300) MPa with the tensile strength in its performance of sheet material of this alloy processing, unit elongation (12～20) % can also stablize the β phase simultaneously.
Description
Technical field
The present invention relates to titanium alloy and preparation thereof, specifically a kind of Ti-62222s titanium alloy and preparation method thereof.
Background technology
Continuous development along with titanium alloy, the titanium alloy of demand high strength and high tenacity more and more, a kind of titanium alloy Ti-62222 s is in preparation process, master alloy directly adds and carries out melting in the titanium, has avoided the simple loaded down with trivial details property that adds metallic tin and chromium metal respectively, has avoided because the metal simple-substance fusing point is inconsistent, the melting electric current that is applied is fluctuated, do not allow manageable phenomenon, the preparation fusion process of titanium alloy is stable like this, and composition is not easy segregation; Existing a kind of aluminium titanium rare earth compound type master alloy (number of patent application 94112628.5) with titanium alloy melting, its antioxidant property is better, but its cost is higher, and adaptive surface narrower (being used for the melting of simple rare-earth type titanium alloy) can not satisfy modern titanium alloy and produce diversified requirement.
Summary of the invention
The object of the present invention is to provide a kind of cost crystal grain low, that be suitable for the modern market demand tiny, be easy to processing and forge, with the tensile strength in its performance of sheet material of this alloy processing up to 1100～1300MPa, the Ti-62222s titanium alloy of unit elongation 12～20%. and preparation (melting) method thereof.
For achieving the above object, the technical solution used in the present invention is:
A kind of Ti-62222s titanium alloy, alloy composition is by weight percentage, Al 5.3～6.10%, Sn1.80～2.20%, Zr 1.80～2.20%, and Mo 1.80～2.20%, and Cr 1.80～2.20%, and Si 0.13～0.19%, and Ti is a surplus.
Preferable alloy composition is, Al 5.5%, and Sn 2.0%, and Mo 2.0%, and Cr 2.0%, and Zr 2.0%, and Si 0.15%, Fe＜0.08%, and C＜0.08%, N≤0.03%, H≤0.015%, O≤0.12%, Ti are surplus.
The preparation method of described Ti-62222s titanium alloy:
Adopting the vacuum self-consumption electrode arc melting method, is major ingredient with the titanium sponge, is batching with master alloy AlSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, aluminium shot and aluminium foil;
1) preparation alloy bag: raw material A lSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, aluminium shot are taked stone method layer by layer in required ratio, divide in the aluminium foil of predetermined dimension, and it is sealed mouthful compress;
2) preparation electrode: get titanium sponge and alloy bag in required ratio, divide composition with titanium sponge, at first divide one deck titanium sponge, level is put 1 alloy clading bag on it, whenever after adding one deck titanium sponge then and dividing, level is put 1 alloy clading bag, by that analogy, divide one deck titanium sponge topmost at last, be squeezed into electrode and carry out arc melting.
Described smelting technique parameter: molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current and feeding electric current 10KA/20～30 minutes → 9.5KA/30～40 minute → 9KA/70～80 minute → 8KA/10～20 minute → 7KA/1～3 minute → 6KA/1～3 minute → 5KA/1～3 minute → 4KA/1～3 minute → 3KA/3～5 minute → 2.5KA/5～8 minute → 2KA/15～20 minute.
Does the present invention compared with prior art have following beneficial effect: (please emphasize to add the benefit of Si?, and in example, provide relevant data embodiment?)
1. be convenient to the preparation of titanium alloy.The present invention's batching evenly adds in the titanium sponge with the form of alloy bag, and easy to control with vacuum consumable electrode arc furnace smelting titanium alloy electric current, electrical loss is little, and cost is low, has made things convenient for the preparation of titanium alloy.
2. uniform ingredients.Even according to the Ti-62222s titanium alloy that the inventive method is prepared, be easy to processing and forge, for solid basis has been established in follow-up processing.
3. crystal grain thinning: according to the Ti-62222s titanium alloy that the inventive method is prepared, its crystal grain is tiny, and contracting property and intensity are good, is convenient to follow-up processing, can improve the converted products yield rate.
4. rational performance: after adding silicon in the alloy of the present invention, the tensile strength in its machining sheet performance is up to 1100～1300MPa, and unit elongation 12～20% can also be stablized the β phase simultaneously.
Embodiment
The present invention is on the basis of Ti-62222 titanium alloy, aluminium, tin, zirconium, molybdenum, chromium composition span of control have been dwindled, and suitable adding major ingredient Si element, just can obtain new Ti-62222s titanium alloy by existing equipment, unique working method and melting technology, the present invention is described in detail in detail below by embodiment.
Adopt the vacuum self-consumption electrode arc melting method: step is carried out routinely, at first prepare master alloy AlSn50, AlCr50, AlMo60, secondly by budget prepare alloy bag, preparation electrode, electrode oven dry, electrode welding, shove charge, vacuum self-consumption electrode arc melting, cool off, come out of the stove, tack railway carriage, sampling analysis;
Embodiment 1.
Concrete preparation process is as follows:
1. preparation alloy bag: with raw material A lSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, aluminium shot are taked stone method layer by layer, divide in the aluminium foil of predetermined dimension, and it is sealed mouthful compress, and store and the movement requirement level;
2. preparation electrode: every economize on electricity utmost point 18kg～25kg, titanium sponge is divided into 4 parts, add 3 alloy clading bags, after whenever adding one deck titanium sponge and dividing, level is put 1 alloy clading bag, by that analogy, the extruding electrode;
3. electrode oven dry: the electrode that has pushed mainly is placed in the drying shed and dries, and bake out temperature is 50～60 ℃, in order to avoid electrode makes moist;
4. the neat vertically welding of the electrode horizontal pendulum that has pushed, solder joint is wanted firmly and must not be oxidized to blueness;
5. shove charge: with starting crane with the electrode shove charge, the banking that weld;
6. carry out melting with vaccum consumable electrode electric arc furnace, melting twice, the smelting technique parameter: during ingot of melting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current 5.0KA～6.0KA; During melting secondary ingot casting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current and feeding electric current 8KA/15～20 minutes → 7.5KA/20～25 minute → 7KA/3～5 minute → 6KA/3～5 minute → 5KA/3～5 minute → 4KA/3～5 minute → 3KA/1～3 minute → 2.0KA/1～3 minute → 1.5KA/10～15 minute;
7. cooling is come out of the stove: the intact back of melting ingot casting requires cooling, is cooled to come out of the stove below 200 ℃, in order to avoid uncolled ingot casting oxidation of coming out of the stove, personnel and other danger takes place burn.
8. fall defectives such as epidermis cold shut with lathe tack and car;
9. get bulk and bits shape sample with lathe respectively at ingot casting head and upper, middle and lower, send the analyzing and testing center to detect.
Embodiment 2.
Concrete preparation process is as follows:
1. preparation alloy bag: raw material A lSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, aluminium shot are taked stone method layer by layer, divide in the aluminium foil of predetermined dimension, and it is sealed mouthful compress, store and the movement requirement level;
2. preparation electrode: every economize on electricity utmost point 38kg～50kg is divided into 6 parts with titanium sponge, adds 5 alloy clading bags, and after whenever adding one deck titanium sponge and dividing, level is put 1 alloy clading bag, by that analogy, and the extruding electrode;
3. electrode oven dry: the electrode that has pushed will be led to be placed in the drying shed and dry, and bake out temperature is 160～200 ℃, in order to avoid electrode makes moist.
4. the neat vertically welding of the electrode horizontal pendulum that has pushed, solder joint is wanted firmly and must not be oxidized to blueness.
5. shove charge: with starting crane with the electrode shove charge, the banking that weld
6. carry out melting with vaccum consumable electrode electric arc furnace, twice of melting, smelting technique parameter: during ingot of melting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current 5.0KA～7KA, during melting secondary ingot casting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current and feeding electric current 10KA/20～30 minutes → 9.5KA/30～40 minute → 9KA/70～80 minute → 8KA/10～20 minute → 7KA/1～3 minute → 6KA/1～3 minute → 5KA/1～3 minute → 4KA/1～3 minute → 3KA/3～5 minute → 2.5KA/5～8 minute → 2KA/15～20 minute.
7. cooling is come out of the stove: the intact back of melting ingot casting requires cooling, is cooled to come out of the stove below 200 ℃, in order to avoid uncolled ingot casting oxidation of coming out of the stove, personnel and other danger takes place burn.
8. fall defectives such as epidermis cold shut with lathe tack and car.
9. get bulk and bits shape sample with lathe respectively at ingot casting head and upper, middle and lower, send the analyzing and testing center to detect.
Embodiment 3.
Concrete preparation process is as follows:
1. preparation alloy bag: with raw material A lSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, aluminium shot are taked stone method layer by layer, divide in the aluminium foil of predetermined dimension, and it is sealed mouthful compress, and store and the movement requirement level.
2. preparation electrode: every economize on electricity utmost point 18kg～25kg, titanium sponge is divided into 4 parts, add 3 alloy clading bags, after whenever adding one deck titanium sponge and dividing, level is put 1 alloy clading bag, by that analogy, the extruding electrode;
3. electrode oven dry: the electrode that has pushed will be led to be placed in the drying shed and dry, and bake out temperature is 80～120 ℃, in order to avoid electrode makes moist.
4. the neat vertically welding of the electrode horizontal pendulum that has pushed, solder joint is wanted firmly and must not be oxidized to blueness.
5. shove charge: with starting crane with the electrode shove charge, the banking that weld
6. carry out melting with vaccum consumable electrode electric arc furnace, melting three times, smelting technique parameter: during ingot of melting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current 5.0KA～6.0KA, during melting secondary ingot casting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current 7.0KA～8.0KA, during three ingot castings of melting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current and feeding electric current 10KA/20～30 minutes → 9.5KA/30～40 minute → 9KA/70～80 minute → 8KA/10～20 minute → 7KA/1～3 minute → 6KA/1～3 minute → 5KA/1～3 minute → 4KA/1～3 minute → 3KA/3～5 minute → 2.5KA/5～8 minute → 2KA/15～20 minute.
7. cooling is come out of the stove: the intact back of melting ingot casting requires cooling, is cooled to come out of the stove below 200 ℃, in order to avoid uncolled ingot casting oxidation of coming out of the stove, personnel and other danger takes place burn.
8. fall defectives such as epidermis cold shut with lathe tack and car.
9. get bulk and bits shape sample with lathe respectively at ingot casting head and upper, middle and lower, send the analyzing and testing center to detect.
Embodiment 4.
Concrete preparation process is as follows:
1. preparation alloy bag: with raw material A lSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, aluminium shot are taked stone method layer by layer, divide in the aluminium foil of predetermined dimension, and it is sealed mouthful compress, and store and the movement requirement level.
2. preparation electrode: every economize on electricity utmost point 38kg～50kg is divided into 6 parts with titanium sponge, adds 5 alloy clading bags, and after whenever adding one deck titanium sponge and dividing, level is put 1 alloy clading bag, by that analogy, and the extruding electrode.
3. electrode oven dry: the electrode that has pushed will be led to be placed in the drying shed and dry, and bake out temperature is 140～170 ℃, in order to avoid electrode makes moist.
4. the neat vertically welding of the electrode horizontal pendulum that has pushed, solder joint is wanted firmly and must not be oxidized to blueness.
5. shove charge: with starting crane with the electrode shove charge, the banking that weld
6. carry out melting with vaccum consumable electrode electric arc furnace, melting three times, smelting technique parameter: during ingot of melting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current 6.0KA～7.0KA, during melting secondary ingot casting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current 8KA～9.0KA, during three ingot castings of melting, molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current and feeding electric current 11KA/20～30 minutes → 10.5KA/30～40 minute → 10KA/70～80 minute → 9KA/10～20 minute → 8KA/1～3 minute → 7KA/1～3 minute → 6KA/1～3 minute → 5KA/1～3 minute → 4KA/3～5 minute → 3KA/5～8 minute → 2.5KA/5～8 minute → 2.0KA/15 branch.
7. cooling is come out of the stove: the intact back of melting ingot casting requires cooling, is cooled to come out of the stove below 200 ℃, in order to avoid uncolled ingot casting oxidation of coming out of the stove, personnel and other danger takes place burn.
8. fall defectives such as epidermis cold shut with lathe tack and car.
9. get bulk and bits shape sample with lathe respectively at ingot casting head and upper, middle and lower, send the analyzing and testing center to detect.
Embodiment 2～4 all is that difference from Example 1 sees Table 1 by the operation of embodiment 1 method, and the electric current system is seen above-mentioned preparation process;
Table 1
Claims (6)
1. Ti-62222s titanium alloy, it is characterized in that: alloy composition is by weight percentage, Al5.3～6.10%, Sn 1.80～2.20%, and Zr 1.80～2.20%, and Mo 1.80～2.20%, Cr 1.80～2.20%, and Si 0.13～0.19%, and Ti is a surplus.
2. according to the described Ti-62222s titanium alloy of claim 1, it is characterized in that:
Alloy composition is by weight percentage, and Al 5.5%, and Sn 2.0%, and Mo 2.0%, and Cr 2.0%, and Zr 2.0%, and Si 0.15%, Fe＜0.08%, and C＜0.08%, N≤0.03%, H≤0.015%, O≤0.12%, Ti are surplus.
3. the preparation method of the described Ti-62222s titanium alloy of claim 1 is characterized in that:
Adopting the vacuum self-consumption electrode arc melting method, is major ingredient with the titanium sponge, is batching with master alloy AlSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, aluminium shot and aluminium foil;
1) preparation alloy bag: raw material A lSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, aluminium shot are taked stone method layer by layer in required ratio, divide in the aluminium foil of predetermined dimension, and it is sealed mouthful compress;
2) preparation electrode: get titanium sponge and alloy bag in required ratio, divide composition with titanium sponge, at first divide one deck titanium sponge, level is put 1 alloy clading bag on it, whenever after adding one deck titanium sponge then and dividing, level is put 1 alloy clading bag ... by that analogy, divide one deck titanium sponge topmost at last, be squeezed into electrode and carry out arc melting.
4. according to the preparation method of the described Ti-62222s titanium alloy of claim 3, it is characterized in that: described smelting technique parameter: molten initial vacuum degree＜3Pa, 3 minutes≤6Pa of leak rate, melting vacuum tightness≤3Pa, melting electric current and feeding electric current 10KA/20～30 minutes → 9.5KA/30～40 minute → 9KA/70～80 minute → 8KA/10～20 minute → 7KA/1～3 minute → 6KA/1～3 minute → 5KA/1～3 minute → 4KA/1～3 minute → 3KA/3～5 minute → 2.5KA/5～8 minute → 2KA/15～20 minute.
5. according to the preparation method of the described Ti-62222s titanium alloy of claim 3, it is characterized in that: described batching composition weight content is that Al 5.3～6.10%, Sn 1.80～2.20%, and Zr 1.80～2.20%, Mo1.80～2.20%, Cr 1.80～2.20%, and Si 0.13～0.19%.
6. according to the preparation method of the described Ti-62222s titanium alloy of claim 5, it is characterized in that: described batching composition weight content is 5.7%Al, 2.03%Sn, 1.97%Mo, 1.97%Cr, 1.98%Zr, 0.15%Si.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102825243A (en) * | 2012-08-02 | 2012-12-19 | 云南钛业股份有限公司 | Technique for EB (Electron Beam) furnace smelting pure titanium feeding |
| CN103215462A (en) * | 2013-05-22 | 2013-07-24 | 朝阳金达钛业股份有限公司 | Device and process for producing silicon containing titanium sponge |
| CN104232993A (en) * | 2014-04-15 | 2014-12-24 | 宁夏东方钽业股份有限公司 | High-performance TC11 tube and preparation thereof |
| CN105039760A (en) * | 2015-07-27 | 2015-11-11 | 西部超导材料科技股份有限公司 | Smelting feeding method for TC4-DT titanium alloy cast ingot of phi 720-phi 1000 mm specification |
| CN106148748A (en) * | 2015-04-01 | 2016-11-23 | 贵州顶效经济开发区沈兴实业有限责任公司 | A kind of Graphene titanium alloy smelting method |
| CN106769178A (en) * | 2016-12-01 | 2017-05-31 | 攀枝花钢企欣宇化工有限公司 | The sampling method of magnesium addition is detected in a kind of titanium sponge |
| CN109402433A (en) * | 2018-12-29 | 2019-03-01 | 宝鸡长征金属材料有限公司 | A kind of preparation method of vacuum melting TiAlCr target |
| RU2772375C2 (en) * | 2018-04-04 | 2022-05-19 | ЭйТиАй ПРОПЕРТИЗ ЭлЭлСи | High-temperature titanium alloys |
| US11384413B2 (en) | 2018-04-04 | 2022-07-12 | Ati Properties Llc | High temperature titanium alloys |
| US11674200B2 (en) | 2018-05-07 | 2023-06-13 | Ati Properties Llc | High strength titanium alloys |
| US11920231B2 (en) | 2018-08-28 | 2024-03-05 | Ati Properties Llc | Creep resistant titanium alloys |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102825243A (en) * | 2012-08-02 | 2012-12-19 | 云南钛业股份有限公司 | Technique for EB (Electron Beam) furnace smelting pure titanium feeding |
| CN103215462A (en) * | 2013-05-22 | 2013-07-24 | 朝阳金达钛业股份有限公司 | Device and process for producing silicon containing titanium sponge |
| CN104232993A (en) * | 2014-04-15 | 2014-12-24 | 宁夏东方钽业股份有限公司 | High-performance TC11 tube and preparation thereof |
| CN104232993B (en) * | 2014-04-15 | 2017-03-08 | 宁夏东方钽业股份有限公司 | A kind of high-performance TC11 pipe and preparation method thereof |
| CN106148748A (en) * | 2015-04-01 | 2016-11-23 | 贵州顶效经济开发区沈兴实业有限责任公司 | A kind of Graphene titanium alloy smelting method |
| CN105039760A (en) * | 2015-07-27 | 2015-11-11 | 西部超导材料科技股份有限公司 | Smelting feeding method for TC4-DT titanium alloy cast ingot of phi 720-phi 1000 mm specification |
| CN106769178A (en) * | 2016-12-01 | 2017-05-31 | 攀枝花钢企欣宇化工有限公司 | The sampling method of magnesium addition is detected in a kind of titanium sponge |
| RU2772375C2 (en) * | 2018-04-04 | 2022-05-19 | ЭйТиАй ПРОПЕРТИЗ ЭлЭлСи | High-temperature titanium alloys |
| US11384413B2 (en) | 2018-04-04 | 2022-07-12 | Ati Properties Llc | High temperature titanium alloys |
| US11674200B2 (en) | 2018-05-07 | 2023-06-13 | Ati Properties Llc | High strength titanium alloys |
| US11920231B2 (en) | 2018-08-28 | 2024-03-05 | Ati Properties Llc | Creep resistant titanium alloys |
| CN109402433A (en) * | 2018-12-29 | 2019-03-01 | 宝鸡长征金属材料有限公司 | A kind of preparation method of vacuum melting TiAlCr target |
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Application publication date: 20091209 |