CN105018791A - Titanium-iron-aluminum-carbon alloy - Google Patents
Titanium-iron-aluminum-carbon alloy Download PDFInfo
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- CN105018791A CN105018791A CN201510518012.8A CN201510518012A CN105018791A CN 105018791 A CN105018791 A CN 105018791A CN 201510518012 A CN201510518012 A CN 201510518012A CN 105018791 A CN105018791 A CN 105018791A
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Abstract
Titanium-iron-aluminum-carbon alloy comprises, by mass, 9.5%-10.5% of Fe, 2.5%-3.5% of Al, 0.03%-0.07% of C and the balance Ti and inevitable impurities. A titanium alloy system is adopted as an object, titanium and iron are adopted as an ally body, and a few aluminum elements and trace carbon elements are added, so that the titanium alloy with high strength and certain plasticity is formed. The titanium alloy with the ratio is easy to smelt, and low in cost.
Description
Technical field
The present invention relates to Materials science and non ferrous metal and their alloy field, particularly titanium alloy.
Background technology
Titanium is low density metals in one (its density is 4.5), there is higher specific tenacity, middle warm nature can be good, nonmagnetic, there is extremely strong corrosion resistance, good welding performance is the structural metallic materials of excellent performance, at high-end technical field dominates day by day such as Aeronautics and Astronautics, naval vessel, nuclear power, weaponry, oil production and biomedical materials.Titanium occurs mainly with alloy form, as higher in the TB Type Titanium Alloy intensity by adding the acquisitions such as all kinds of β phase stable element and molybdenum, tungsten, vanadium, chromium, niobium, tantalum, manganese, cobalt, is the important content of Ti alloy with high performance research and development application.Because some β phase stable element fusing points are higher, be difficult to melting, such as vanadium (fusing point 1890 DEG C), molybdenum (fusing point 2610 DEG C), chromium (fusing point 1907 DEG C), tantalum (fusing point 2996 DEG C), tungsten (fusing point 3380 DEG C), the use of these high-melting-point raw materials will improve the manufacturing cost of titanium alloy.In addition, according to rough market survey, the price of some alloy elements is high, such as, and vanadium (about 3000 yuan/KG), molybdenum (about 500 yuan/KG), chromium (about 650 yuan/KG), tantalum (about 4800 yuan/KG), tungsten (about 500 yuan/KG).Comprehensive above-mentioned each factor, is unfavorable for the mass-producing application of titanium alloy.
Summary of the invention
The ferrotianium aluminium carbon alloy that the object of the present invention is to provide a kind of fusing point of raw material and cost all lower.This alloy is a kind of TB type ferrotianium aluminium carbon alloy with higher ferro element and carbon element content.
Technical scheme of the present invention is realized by following manner:
1, ferrotianium aluminium carbon alloy material of the present invention, its mass percent is as follows: the content of the content of Fe to be the content of 9.5-10.5%, Al be 2.5-3.5%, C is 0.03-0.07%, and surplus is Ti and inevitable impurity.
2, the preparation method of alloy of the present invention
Preparation method of the present invention is: take preparation of raw material alloy according to the given proportioning of alloy, the alloy preparing composition is placed in the water jacketed copper crucible of electric arc furnace, utilizes vacuum non-consumable arc furnace to carry out melting, and before melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10
-2pa, arc-welding source current work scope is 300-500A, and voltage power supply scope is 15-30V (needing suitably adjustment melting equipment correlation parameter according to melt state in fusion process); The complete alloy pig of melting cools with crucible, and for guaranteeing that alloying constituent is even, each alloy pig will minimum 8 times of melt back in electric arc furnace.After the uniform alloy of melting takes out from crucible, for casting the analysis of state properties of sample or following process.
According to ferrotitanium binary alloy phase diagram, the alloy of rich titanium one end is by Titanium base and ferrotitanium phase composite, and matrix β titanium is body-centered cubic phase, has splendid plasticity, and ferrotitanium, as alloy cpd phase, mainly plays the effect of strengthening in the base.By choose reasonable alloying constituent and add other alloying element as aluminium, carbon etc., realize refinement matrix and second-phase, the phase composite of optimized alloy, improve its pattern and distribution, heavy alloyed mechanical property can be put forward further.
In the present invention, Fe is main alloying elements, and Al is secondary alloy element, and C is micro-alloying elements.Alloys producing used comprises stable β phase, solution strengthening, second-phase strength, improve alloy microtexture and to reduce in alloy oxygen element to the impact etc. of performance.
The present invention compared with prior art tool has the following advantages:
1, the present invention is object with titanium alloy part, with ferrotianium two kinds of elements for alloy bulk, by adding a small amount of aluminium element and trace carbon element, becomes the titanium alloy with higher-strength and certain plasticity.
2, the titanium alloy of proportioning of the present invention is adopted not only to be easier to melting, and with low cost.
Accompanying drawing explanation
Fig. 1 is the engineering stress-strain curve figure under rolling state alloy uniaxial extension condition;
Fig. 2 is the metallographic microstructure photo figure of As rolled alloy.
Embodiment
Example 1
With the feed proportioning such as iron-carbon and 3 grams of fine aluminiums that 87 grams of pure titanium silks, 10 grams of carbon contents are 0.56%, use non-consumable arc furnace melting.During melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10
-2pa, arc-welding source working current is 400A, and operating voltage is 20V.Alloy is after being smelted into an entirety for the first time, and in crucible, turn-over carries out secondary smelting, so repeatedly, amounts to 8 times.
Treat that alloy melting is complete, from alloy pig, the alloy sample that length, width and height are respectively 40,40,15 is cut by Wire EDM, multi-pass rolling is carried out in 900 DEG C, pass deformation controls within 10%, total deformation is more than 60%, and after rolling, the mode of alloy shrend or air cooling is chilled to room temperature.Alloy sheets wire electric discharge is cut into tension specimen, carries out Mechanics Performance Testing with the stretching mechanical trier with extensometer.Test result shows that alloy has excellent mechanical property, table specific as follows:
The basic mechanical performance of table one rolling state alloy of the present invention
Uniaxial extension engineering stress strain curve figure as can be seen from the rolling state alloy of the present invention shown in Fig. 1: the yield strength of prepared alloy is higher, and its unit elongation is more than 15% under uniaxial extension condition, it is a kind of Ti alloy with high performance material having higher-strength and plasticity concurrently.
As can be seen from the metallographic microstructure photo figure of the rolling state alloy of the present invention shown in Fig. 2, the microstructure of alloy by Titanium base and in the base equally distributed strengthening phase form, wherein the average grain size of Titanium base is greater than 100 microns, after hot rolling process, can be observed certain orientation.
Example 2
With the feed proportioning such as iron-carbon and 2.5 grams of fine aluminiums that 87.5 grams of pure titanium silks, 10 grams of carbon contents are 0.7%, use non-consumable arc furnace melting.During melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10
-2pa, arc-welding source working current is 500A, and operating voltage is 30V.Alloy is after being smelted into an entirety for the first time, and in crucible, turn-over carries out secondary smelting, so repeatedly, amounts to 8 times.
Example 3
With the feed proportioning such as iron-carbon and 3.5 grams of fine aluminiums that 86.5 grams of pure titanium silks, 10 grams of carbon contents are 0.3%, use non-consumable arc furnace melting.During melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10
-2pa, arc-welding source working current is 300A, and operating voltage is 15V.Alloy is after being smelted into an entirety for the first time, and in crucible, turn-over carries out secondary smelting, so repeatedly, amounts to 8 times.
Claims (1)
1. a ferrotianium aluminium carbon alloy, is characterized in that: its mass percent is as follows: the content of the content of Fe to be the content of 9.5-10.5%, Al be 2.5-3.5%, C is 0.03-0.07%, and surplus is Ti and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510518012.8A CN105018791A (en) | 2015-08-21 | 2015-08-21 | Titanium-iron-aluminum-carbon alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510518012.8A CN105018791A (en) | 2015-08-21 | 2015-08-21 | Titanium-iron-aluminum-carbon alloy |
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| CN105018791A true CN105018791A (en) | 2015-11-04 |
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| CN201510518012.8A Pending CN105018791A (en) | 2015-08-21 | 2015-08-21 | Titanium-iron-aluminum-carbon alloy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105441714A (en) * | 2015-12-24 | 2016-03-30 | 燕山大学 | High-strength and high-plasticity titanium iron copper carbon alloy |
| CN105506376A (en) * | 2015-12-24 | 2016-04-20 | 燕山大学 | Low-cost and high-strength titanium-iron-aluminum-carbon alloy |
| CN106048372A (en) * | 2016-07-06 | 2016-10-26 | 燕山大学 | High-strength high-plasticity titanium-nickel-iron-carbon two-phase alloy and preparation method |
| CN110951992A (en) * | 2019-11-28 | 2020-04-03 | 燕山大学 | Antibacterial medical titanium alloy with low elastic modulus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09302429A (en) * | 1996-05-09 | 1997-11-25 | Sumitomo Metal Ind Ltd | Titanium alloy for living body |
| CN103667788A (en) * | 2012-09-14 | 2014-03-26 | 北京工业大学 | Titanium alloy and thermal treatment process |
-
2015
- 2015-08-21 CN CN201510518012.8A patent/CN105018791A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09302429A (en) * | 1996-05-09 | 1997-11-25 | Sumitomo Metal Ind Ltd | Titanium alloy for living body |
| CN103667788A (en) * | 2012-09-14 | 2014-03-26 | 北京工业大学 | Titanium alloy and thermal treatment process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105441714A (en) * | 2015-12-24 | 2016-03-30 | 燕山大学 | High-strength and high-plasticity titanium iron copper carbon alloy |
| CN105506376A (en) * | 2015-12-24 | 2016-04-20 | 燕山大学 | Low-cost and high-strength titanium-iron-aluminum-carbon alloy |
| CN106048372A (en) * | 2016-07-06 | 2016-10-26 | 燕山大学 | High-strength high-plasticity titanium-nickel-iron-carbon two-phase alloy and preparation method |
| CN110951992A (en) * | 2019-11-28 | 2020-04-03 | 燕山大学 | Antibacterial medical titanium alloy with low elastic modulus |
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