CN1283821C - AI-Mo-Si ternary alloy and its preparation method - Google Patents
AI-Mo-Si ternary alloy and its preparation method Download PDFInfo
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- CN1283821C CN1283821C CN 200310109192 CN200310109192A CN1283821C CN 1283821 C CN1283821 C CN 1283821C CN 200310109192 CN200310109192 CN 200310109192 CN 200310109192 A CN200310109192 A CN 200310109192A CN 1283821 C CN1283821 C CN 1283821C
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- alloy
- ternary alloy
- titanium alloy
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- titanium
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- 229910002058 ternary alloy Inorganic materials 0.000 title claims abstract description 25
- 229910017305 Mo—Si Inorganic materials 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 6
- 230000006698 induction Effects 0.000 claims abstract description 4
- 239000004615 ingredient Substances 0.000 claims abstract description 4
- 238000003723 Smelting Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 2
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 35
- 238000005266 casting Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- 238000005204 segregation Methods 0.000 description 11
- 229910018125 Al-Si Inorganic materials 0.000 description 7
- 229910018520 Al—Si Inorganic materials 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 238000005242 forging Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 229910002056 binary alloy Inorganic materials 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 101100366060 Caenorhabditis elegans snap-29 gene Proteins 0.000 description 1
- 229910001122 Mischmetal Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Abstract
The present invention relates to Al-Mo-Si ternary alloy and a preparation method thereof, and the preparation method is used for preparing raw material for producing TC11 titanium alloy. The present invention is characterized in that the Al-Mo-Si ternary alloy has the chemical components of 4 to 5% of Si, 45 to 55% of Al, 40 to 48% of Mo, and the rest of C, Fe and foreign matters by weight. When the Al-Mo-Si ternary alloy is prepared, firstly, the chemical components are smelted by a vacuum induction furnace to reduce oxygen content in the Al-Mo-Si ternary alloy and cast into alloy blocks; then, a crusher is used for crushing the alloy blocks into small alloy blocks of 8 to 15mm. The present invention has the characteristic of strong technical operability; the produced ternary alloy has the advantages of uniform ingredient, low inclusion content and low gas content; in casting ingots of finished products of the TC11 titanium alloy produced by using the raw material of the ternary alloy, the content of the Si element is basically matched with matched ingredients, and the aliquation of the Si element at the head section and the tail section is equal to or less than 0.025. The phenomenon of the aliquation of Si in the production of the casting ingots of the TC11 titanium alloy is avoided, the quality of the titanium alloy products is stabilized, and the rate of the finished products is high.
Description
Technical field
The present invention relates to be used for starting material and the preparation method that the metallurgy industry titanium alloy is produced, refer in particular to and be exclusively used in alloy raw material of producing the TC11 titanium alloy and preparation method thereof.
Background technology
Titanium alloy is a kind of new type of metal material, contain 85%～90% above titanium, all the other are alloying elements such as aluminium Al, molybdenum Mo, vanadium V, silicon Si, zirconium Zr, iron Fe, tin Sn, it has light specific gravity (about 4.5g/cm2, iron and steel is 7.8g/cm2), corrosion-resistant, many advantages such as use temperature is high (can reach at present more than 700 ℃), intensity height, plasticity are good, be widely used in Aeronautics and Astronautics, ocean, building, automobile, the first-class military project vitals of golf ball, the high-grade product for civilian use.Its basic production technical process is as follows: (1) titanium electrode preparation: after generally unit (or double base) alloys such as aluminium Al, molybdenum Mo, vanadium V, silicon Si, zirconium Zr, iron Fe, tin Sn being mixed (composition that guarantees the titanium electrode is even) with certain form, ratio and titanium sponge, be pressed into required titanium electrode shape by certain method.(2) melting: generally adopt the consumable electrode vacuum furnace melting, the titanium electrode is become finished ingot (the several times vacuum consumable becomes φ 580 or above finished ingot), also there are the electron beam of employing or plasma cold hearth melting method in external advanced country.(3) become a useful person: the finished ingot open die forging (is forged into earlier large scale rod bar or square billet, for next step forging or rolling on forging press.) after, adopt the pressure processing method of rolling (large scale rod bar further is rolled into the bar of small dimension, refers generally to the following finished product bar of φ 100mm) or die forging (bar or square billet are swaged into stamp work), produce the finished product of titanium alloy.
TC11 titanium alloy (nominal composition is 6.5Al-3.6Mo-2Zr-0.25Si) is a kind of in the titanium alloy, because its use temperature is higher, heat resistance is good, mainly is used on aero-engine compressor dish, stator and the war products such as spinner blade, space flight; Along with the demand of aviation machine and developing rapidly of material, the demand of TC11 titanium alloy also increases day by day.The alloy raw material of TC11 titanium alloy is titanium sponge, Al-Mo alloy or metal M o, Al-Si binary alloy rod or crystallization Si, Al silk and zirconium sponge.Working the Si element of strengthening the high-temperature behavior effect is indispensable alloying element in the TC11 titanium alloy, but in TC11 titanium alloy production process, if containing the alloy raw material of Si prepares bad, the Si elements segregation appears easily, even (the Si elemental composition narrow range in the TC11 titanium alloy finished product: 0.20%～0.35%), easily cause the performance inconsistency of TC11 titanium alloy product and scrapping of product that exceeds standard.Therefore, solve the Si elements segregation to stable and to optimize the TC11 titanium alloy product extremely important.
At present, in the TC11 titanium alloy production process, the adding method of Si element generally adopts two kinds of forms of crystallization Si and Al-Si rod: the former easy scaling loss, Composition Control is inaccurate.The latter is first with metal A l and crystallization Si melting together, is cast into definite shape (as the rod of φ 28 * 1000mm) more as required.Its weak point is: through the Al-Si rod alloy of smelting and pouring, because Si content is higher, reach 10%～15% (because the titanium electrode of compacting φ 320 * 1000mm, so the shape of Al-Si rod is also fixing, so Si content must so highly just can meet, and the composition of Si requires among the TC11), cause the gathering of solidifying of Si easily in the part, segregation appears, cause the inhomogeneous of Si content in the Al-Si rod, finally cause the component segregation of TC11 titan alloy casting ingot Si element, even local offscale phenomenon takes place, and cause scrapping of product, influence the steady quality of product." Si segregation problem " become the restraining factors of producing the TC11 titanium alloy product.
Summary of the invention
The present invention develops the Al-Mo-Si ternary alloy that a kind of TC11 of being used for titanium alloy is produced, it is the characteristics that contain Mo element (about 3%) according to the TC11 titanium alloy component, original Al-Si binary alloy rod is improved,, be broken into small-particle Al, Mo, Si mixed smelting.The advantage of this ternary alloy is the content of Si can be controlled at lower level, reduce the segregation degree of Si, finally improved the homogenizing degree of Si element in the TC11 titanium alloy finished product, avoid Si elements segregation even offscale phenomenon in the TC11 titan alloy casting ingot, stablize the quality product of TC11 titanium alloy.
A kind of Al-Mo-Si ternary alloy provided by the invention is characterized in that: the chemical component weight per-cent of Al-Mo-Si ternary alloy is as follows:
(Si content is too high for Si:4～5%, the clustering phenomena that solidifies of Si mischmetal easily takes place in the Al-Mo-Si ternary alloy, Si segregation degree is bigger, influence the Si element homogenizing degree in the TC11 titanium alloy finished product, easily cause the segregation phenomena of Si element, reduce the quality product of TC11 titanium alloy) at the TC11 titan alloy casting ingot;
Al:45～55% (Composition Control of Al and Mo is in certain ratio, and the Al-Mo-Si ternary alloy is easily broken, otherwise viscosity is higher, broken difficulty);
Mo：40～48％；
Surplus is the impurity that comprises C, Fe.
The preferred following proportioning of the present invention (the best):
Si：4～5％，
Al：50～55％，
Mo：40～45％。
When above-mentioned Al-Mo-Si ternary alloy prepares, at first adopt vacuum induction furnace smelting, to reduce oxygen level (oxygen level≤0.15% of TC11 titanium alloy finished product in the Al-Mo-Si ternary alloy, have relatively high expectations, if the oxygen level in the Al-Mo-Si ternary alloy is higher, oxygen level in the TC11 electrode ingot that then is pressed into is also higher, and the oxygen level that finally influences TC11 titanium alloy finished product is higher, cause TC11 titanium alloy final product quality to descend), and be cast into alloy block, adopt crusher alloy block to be broken into the small-particle of 8～25mm then, granularity preferably 8～15mm (granularity is with TC11 titanium alloy main raw material(s)--the titanium sponge granularity is consistent or close, mix more evenly, guarantee that each regional alloying constituent of titanium electrode is even).
Compared with prior art, the utlity model has following advantage:
(1) technology is workable.
(2) inclusion of ternary alloy and gas content are low.
(3) uniform ingredients of alloy raw material.
(4) TC11 titanium alloy steady quality, the yield rate height of Sheng Chaning.
Specific embodiments
Certain Iron And Steel Company implements the present invention: at first adopt vacuum induction furnace smelting go out the Al-Mo-Si ternary alloy (chemical component weight per-cent is as follows: 4～5%Si, 50～55%Al, 40～45%Mo), become the small-particle of 8～25mm through crusher in crushing.Then, titanium alloy production technique routinely, Al-Mo-Si ternary alloy that the present invention is produced and titanium sponge and other alloy raw material mix, (φ 320 * 1000mm), and (φ 580 * 1700mm) to become qualified TC11 titanium alloy finished product ingot casting through three vacuum consumable smeltings to be pressed into the TC11 titanium alloy electrode together.Data Detection shows (seeing Table one): in the finished product ingot casting, the Si constituent content with allocate that composition mates substantially and composition is even into, Si element segregation≤0.02% of head, afterbody simultaneously.Solve the segregation phenomena of the TC11 titan alloy casting ingot different sites that adopts the production of Al-Si rod binary alloy, stablized the quality product of TC11 titanium alloy.
The Si element component content table one of TC11 titanium alloy finished product
| Heat (batch) number | Si(％) | Head, tail deviation | Error with the value of allocating into | |
| Before the enforcement | 543-232 | Head: 0.37 tail: 0.20 | 0.17 | +32.1％ -28.6％ |
| 843-159 | Head: 0.29 tail: 0.19 | 0.10 | +3.6％ -32.1％ | |
| After the enforcement | 143-363 | Head: 0.26 tail: 0.27 | 0.01 | ±3.6％ |
| 243-0378 | Head: 0.27 tail: 0.28 | 0.01 | -3.6％ 0.0％ | |
| Technological standard: 0.20～0.35, allocate composition into: 0.28 | ||||
Claims (3)
1, a kind of Al-Mo-Si ternary alloy is characterized in that the chemical component weight per-cent of ternary alloy is as follows:
Si：4～5％；
Al：45～55％；
Mo：40～48％；
Surplus is the impurity that comprises C, Fe.
2, a kind of Al-Mo-Si ternary alloy according to claim 1 is characterized in that the chemical ingredients proportioning of ternary alloy is as follows:
Si：4～5％，
Al：50～55％，
Mo：40～45％。
3, the preparation method of Al-Mo-Si ternary alloy according to claim 1 is characterized in that: at first adopt vacuum induction furnace smelting, and be cast into alloy block, then alloy block is broken into the small-particle of 8～25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109192 CN1283821C (en) | 2003-12-09 | 2003-12-09 | AI-Mo-Si ternary alloy and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109192 CN1283821C (en) | 2003-12-09 | 2003-12-09 | AI-Mo-Si ternary alloy and its preparation method |
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| Publication Number | Publication Date |
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| CN1546707A CN1546707A (en) | 2004-11-17 |
| CN1283821C true CN1283821C (en) | 2006-11-08 |
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| CN 200310109192 Expired - Lifetime CN1283821C (en) | 2003-12-09 | 2003-12-09 | AI-Mo-Si ternary alloy and its preparation method |
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| CN103071743B (en) * | 2013-01-30 | 2014-10-29 | 西部钛业有限责任公司 | Preparation method for TC11 titanium alloy small-bore thick-walled cylindrical part |
| CN107304464B (en) * | 2016-04-18 | 2019-10-22 | 宝钢特钢有限公司 | A kind of ternary alloy three-partalloy, preparation method and use improving titanium alloy component uniformity |
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