CN106048372A - High-strength high-plasticity titanium-nickel-iron-carbon two-phase alloy and preparation method - Google Patents
High-strength high-plasticity titanium-nickel-iron-carbon two-phase alloy and preparation method Download PDFInfo
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- CN106048372A CN106048372A CN201610527150.7A CN201610527150A CN106048372A CN 106048372 A CN106048372 A CN 106048372A CN 201610527150 A CN201610527150 A CN 201610527150A CN 106048372 A CN106048372 A CN 106048372A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
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Abstract
The invention discloses a high-strength high-plasticity titanium-nickel-iron-carbon two-phase alloy which consists of the following components in percentage by mass: 43%-45% of Ti, 49-52% of Ni, 0.024-0.028% of C and the balance Fe and inevitable impurities. A preparation method for the alloy comprises the following steps: putting the alloy with the components into a water-cooling copper crucible of a vacuum nonconsumable electric-arc furnace, wherein back bottom vacuum of the electric-arc furnace before smelting is higher than 2.0*10<-2> Pa, a working range of arc-welding supply current is 400-500 A, a voltage working range is 20-30 V, a smelting temperature is 2000-2500 DEG C, smelting time at every turn of single cast ingot is 4 minutes; repeatedly smelting is at least 8 times; and cooling the smelted alloy ingot along with the crucible. The alloy is two-phase alloy which has relatively high strength and excellent plasticity, and has excellent wear resistance, corrosion resistance and processability in comparison with other structural materials. The used metal elements are relatively low in melting point and are easy to smelt, so that manufacturing cost of the alloy is reduced, and large-scale production is facilitated.
Description
Technical field
The present invention relates to a kind of alloy, particularly two-phase alloys.
Background technology
The intermetallic compound based composite materials such as Ti-Al, Ni-Al, Fe-Al, because of its excellent mechanical property, anticorrosive
Property, wearability, damping and amortization, biocompatibility etc., have a good application prospect, cause the extensive concern of people.But as knot
Structure material, current highlighting there is problems of fragility and environmental sensitivity etc., causes it and fails to obtain in commercial Application aspect to break through.
Such as, Al3When Ti base intermetallic compound at room temperature compresses, the compression plastic strain of the most only 10%, NiAl is in room temperature
During lower stretching, its stretching plastic is only 0-2%.By the control of suitable technique, Fe3Al temperature-room type plasticity can reach 15%-20%,
But its performance is the most sensitive to technological parameter, if controlling improper, performance will be substantially reduced, and hinder its popularization and application.According to phase
The Ti-Ni alloy of figure understands, near grade for atomic ratio is by TiNi and Ti2Ni intermetallic compound is constituted.This intermetallic compound
Based composites is widely used as shape-memory material, but its research being used as structural material rarely has report.
Summary of the invention
It is an object of the invention to provide high-strength high-ductility titanium ferronickel carbon two-phase alloys and the preparation of a kind of excellent in mechanical performance
Method.This alloy is a kind of Ni-based high-strength alloy of titanium with double structure.
The technical scheme is that and be accomplished by:
One, the titanium ferronickel carbon alloy material of the present invention, its mass percent is as follows: the content 43%-45%, Ni of Ti contains
Amount is 0.024-0.028% for the content of 49-52%, C, and surplus is Fe amount and inevitable impurity.
Two, the preparation method of above-mentioned titanium ferronickel carbon alloy is as follows:
The alloy of mentioned component is placed in the water jacketed copper crucible of electric arc furnace, utilizes vacuum non-consumable arc furnace to melt
Refining, before melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10-2Pa, Arc Welding Power current work scope is 400-500A, voltage work
Being 20-30V as scope, smelting temperature is 2000-2500 DEG C, and each smelting time of single ingot casting is 4 minutes, and melt back is minimum
8 times, the complete alloy pig of melting cools down with crucible, after the uniform alloy of melting takes out from crucible, is used for casting state alloy properties
Can analyze or following process.
In the present invention, Ti, Ni are main alloying elements, and Fe is secondary alloy element, and C is micro-alloying elements.Institute
With alloys producing solution strengthening, second-phase strength, improve alloy microstructure and reduce in alloy oxygen element to performance
Impact etc..In order to regulate the phase transition temperature of alloy, mechanical property etc., third element can be added in Ti-Ni alloy.Research
Finding, the membership that adds of Fe element significantly reduces the martensitic transformation temperature of alloy, promotes its intensity and plasticity, when in alloy, Fe surpasses
After crossing certain content, martensitic transformation temperature is close to absolute zero.It is soft tough Ti Ni (Fe that solid solution is a small amount of) base based on alloy
Body phase and the most crisp Ti2Ni the second phase is constituted.The addition of the C element of trace can effectively facilitate forming core, crystal grain thinning.Alloy is made to exist
There is high intensity and be provided simultaneously with excellent plasticity and high work hardening rate, have more excellent relative to other structural material
Wearability, corrosion resistance, processability etc., possess the speciality of the structural material becoming excellent.
The present invention compared with prior art has the advantage that
1, the present invention is with two kinds of elements of titanium nickel as alloy bulk, by adding a small amount of ferrum element and trace carbon element, makes
Its become have higher-strength and excellent plasticity and relative to other structural material possess excellence wearability, corrosion resistance, add
The two-phase alloys of work.
2, the fusing point of metallic element used is relatively low, and nickel (1453 °) titanium (1660 °) ferrum (1535 °) is prone to melting, thus reduces
The manufacturing cost of alloy, beneficially large-scale production.
Accompanying drawing explanation
Fig. 1 is the engineering stress under cast alloy Uniaxial Compression-strain curve figure；
Fig. 2 is the metallographic microstructure photo figure of cast alloy.
Detailed description of the invention
Embodiment 1
With the iron-carbon alloy feed proportioning that 44 grams of pure titanium silks, 51 grams of pure nickel wires, 5 grams of carbon contents are 0.56%, use non-consumable
Vacuum arc furnace melting.During melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10-2Pa, Arc Welding Power operating current is 400A, work
Being 30V as voltage, smelting temperature most preferably 2500 DEG C, each smelting time of single ingot casting is 4 minutes, and alloy is smelted into through for the first time
After one entirety, in crucible, turn-over carries out secondary smelting, the most repeatedly, 8 times altogether, and the complete alloy pig of melting is cold with crucible
But, after the uniform alloy of melting takes out from crucible, high strength titanium ferronickel carbon alloy is prepared.
Treat that alloy melting is complete, cut, from alloy pig diverse location, a height of 10mm that radius is 5m by Wire EDM
Cylinder sample, carries out Mechanics Performance Testing with the Compressive Mechanical testing machine with extensometer.It is excellent that test result shows that alloy has
Different comprehensive mechanical property, table specific as follows:
The basic mechanical performance of table one as cast condition alloy of the present invention
As shown in Figure 1, it will thus be seen that the yield strength of prepared alloy is general, but work hardening rate is high, fracture strength
Height, and under Uniaxial Compression, its elongation percentage, more than 30%, is a kind of high-performance two-phase having higher-strength and plasticity concurrently
Alloy material.Existing Ti-Ni memorial alloy, plasticity is more excellent, but intensity is relatively low.
As shown in Figure 2, it can be seen that the microscopic structure of alloy is by TiNi matrix and the most equally distributed Ti2Ni is strong
Changing phase composition, wherein the average grain size of matrix is at 20 microns, and hardening constituent is needle-like.According to ferrum nickel binary alloy phase diagram, closely
Deng near atomic ratio near the alloy of titanium one end by TiNi and Ti2Ni phase composition, matrix is TiNi simple cubic phase, has preferably
Plasticity, Ti2Ni, as alloy cpd phase, primarily serves the effect of strengthening in the base.By rationally selecting alloying component
And add other alloying element such as ferrum, carbon etc., it is achieved refinement matrix and the second phase, the phase composition of optimized alloy, improve it
Pattern and distribution, can put forward heavy alloyed mechanical property further.
Embodiment 2
With feed proportionings such as the iron-carbon alloys that 43 grams of pure titanium silks, 52 grams of pure nickel wires, 5 grams of carbon contents are 0.48%, with non-self
Consumption vacuum arc furnace melting.During melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10-2Pa, Arc Welding Power operating current is 500A,
Running voltage is 20V, and smelting temperature most preferably 2000 DEG C, each smelting time of single ingot casting is 4 minutes.Alloy is through first melting
After becoming an entirety, in crucible, turn-over carries out secondary smelting, the most repeatedly, 8 times altogether, and the complete alloy pig of melting is with crucible
Cooling, after the uniform alloy of melting takes out from crucible, prepares high strength titanium ferronickel carbon alloy.
Example 3
With feed proportionings such as the iron-carbon alloys that 45 grams of pure titanium silks, 49 grams of nickel wires, 6 grams of carbon contents are 0.43%, use non-consumable
Vacuum arc furnace melting.During melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10-2Pa, Arc Welding Power operating current is 450A, work
Being 25V as voltage, smelting temperature most preferably 2500 DEG C, each smelting time of single ingot casting is 4 minutes.Alloy is smelted into through for the first time
After one entirety, in crucible, turn-over carries out secondary smelting, the most repeatedly, 8 times altogether, and the complete alloy pig of melting is cold with crucible
But, after the uniform alloy of melting takes out from crucible, high strength titanium ferronickel carbon alloy is prepared.
Claims (2)
1. a high-strength high-ductility titanium ferronickel carbon two-phase alloys, it is characterised in that: its mass percent is as follows: the content 43%-of Ti
The content of 45%, Ni be the content of 49-52%, C be 0.024-0.028%, surplus be Fe amount and inevitable impurity.
2. the preparation method of the high-strength high-ductility titanium ferronickel carbon two-phase alloys of claim 1, it is characterised in that: by the conjunction of mentioned component
Gold is placed in the water jacketed copper crucible of vacuum non-consumable arc furnace, and before melting, the back end vacuum of electric arc furnace is higher than 2.0 × 10-2Pa, arc
Weldering source current working range is 400-500A, and voltage power supply scope is 20-30V, and smelting temperature is 2000-2500 DEG C, single
The each smelting time of ingot casting is 4 minutes, minimum 8 times of melt back, and the complete alloy pig of melting cools down with crucible.
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| CN201610527150.7A CN106048372A (en) | 2016-07-06 | 2016-07-06 | High-strength high-plasticity titanium-nickel-iron-carbon two-phase alloy and preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149064A (en) * | 2017-12-19 | 2018-06-12 | 燕山大学 | A kind of high-strength high-plastic titanium ferro-aluminum silicon-carbon alloy |
| CN114892042A (en) * | 2022-04-20 | 2022-08-12 | 嘉兴鸷锐新材料科技有限公司 | High-temperature-resistant iron-nickel alloy and preparation method and application thereof |
| CN115229203A (en) * | 2022-06-24 | 2022-10-25 | 华中科技大学 | Nickel-titanium-based alloy and titanium alloy composite material and 4D printing method thereof |
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| CN1614056A (en) * | 2004-12-08 | 2005-05-11 | 北京航空航天大学 | Low-phase point-variable high-strength TiNiFe marmem and use as pipe joint thereof |
| CN1614055A (en) * | 2004-12-08 | 2005-05-11 | 北京航空航天大学 | Low-phase point-variable high-strength TiNiFeMo marmem and use as pipe joint thereof |
| CN1718800A (en) * | 2005-07-07 | 2006-01-11 | 上海交通大学 | Preparation method of high wear resistance titanium nickel alloy material |
| CN103215459A (en) * | 2013-04-27 | 2013-07-24 | 西安赛特金属材料开发有限公司 | Preparation method of low-carbon and low-oxygen titanium-nickel alloy large ingot |
| CN105018791A (en) * | 2015-08-21 | 2015-11-04 | 燕山大学 | Titanium-iron-aluminum-carbon alloy |
| CN105506376A (en) * | 2015-12-24 | 2016-04-20 | 燕山大学 | Low-cost and high-strength titanium-iron-aluminum-carbon alloy |
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2016
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| CN1614056A (en) * | 2004-12-08 | 2005-05-11 | 北京航空航天大学 | Low-phase point-variable high-strength TiNiFe marmem and use as pipe joint thereof |
| CN1614055A (en) * | 2004-12-08 | 2005-05-11 | 北京航空航天大学 | Low-phase point-variable high-strength TiNiFeMo marmem and use as pipe joint thereof |
| CN1718800A (en) * | 2005-07-07 | 2006-01-11 | 上海交通大学 | Preparation method of high wear resistance titanium nickel alloy material |
| CN103215459A (en) * | 2013-04-27 | 2013-07-24 | 西安赛特金属材料开发有限公司 | Preparation method of low-carbon and low-oxygen titanium-nickel alloy large ingot |
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| CN105506376A (en) * | 2015-12-24 | 2016-04-20 | 燕山大学 | Low-cost and high-strength titanium-iron-aluminum-carbon alloy |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149064A (en) * | 2017-12-19 | 2018-06-12 | 燕山大学 | A kind of high-strength high-plastic titanium ferro-aluminum silicon-carbon alloy |
| CN114892042A (en) * | 2022-04-20 | 2022-08-12 | 嘉兴鸷锐新材料科技有限公司 | High-temperature-resistant iron-nickel alloy and preparation method and application thereof |
| CN115229203A (en) * | 2022-06-24 | 2022-10-25 | 华中科技大学 | Nickel-titanium-based alloy and titanium alloy composite material and 4D printing method thereof |
| CN115229203B (en) * | 2022-06-24 | 2024-03-19 | 华中科技大学 | Nickel-titanium-based alloy and titanium alloy composite material and 4D printing method thereof |
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