CN109097628A - A kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses - Google Patents
A kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses Download PDFInfo
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- CN109097628A CN109097628A CN201811179725.6A CN201811179725A CN109097628A CN 109097628 A CN109097628 A CN 109097628A CN 201811179725 A CN201811179725 A CN 201811179725A CN 109097628 A CN109097628 A CN 109097628A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C14/00—Alloys based on titanium
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- 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
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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Abstract
The invention discloses a kind of 500-600 degree uses under non-oxidizing atmosphere novel fire resistant titanium alloy.According to weight percent, the ingredient of the alloy are as follows: Li:1.0-1.2wt.%, In:5.0-8.0wt.%, Mg:2.0-4.0wt.%, Sb:0.5-0.8wt.%, Fe:4.1-4.2wt.%, Y:1.2-1.4wt.%, Ru:0.3-0.5wt.%, Th:0.4-0.6wt.%, surplus are titanium.The material provides a kind of novel materialogy solution for the occasion for needing titanium alloy to use at high operating temperatures.The implementation and industrialization of the alloy can push significantly China in high-end field to the business upgrade requirement of high temperature resistant titanium alloy material.
Description
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of titanium alloy.
Background technique
Titanium rich reserves in the earth's crust arrange the 9th in all elements, iron, magnesium, aluminium are only second in common metal element
Arrange the 4th.The density of titanium alloy is 4.51g/cm3Left and right, only the 60% of steel.Titanium is one to grow up the 1950s
The important structural metal of kind, titanium alloy intensity is high, corrosion resistance is good, heat resistance is high.50~sixties of 20th century, mainly develop
The high-temperature titanium alloy of aero-engine and the structural titanium alloy of body.Develop a collection of corrosion resistant Ti alloy the seventies, 80 years
Since generation, corrosion resistant Ti alloy and high-strength titanium alloy are further developed.
The market of titanium alloy and product demand mainly from jet engine, airframe and industrial application three parts, from
From the point of view of another angle, it can also be divided into military, civil aviation and space flight and the big field of non-aerospace three.Each market
Performance requirement to titanium alloy product is different.For example, to focus primarily upon elevated temperature tensile strong for the requirement of jet engine
Degree, creep strength, fatigue strength and high high-temp stability;The basic performance that airframe is considered is fracture toughness, very high
Tensile strength and good fatigue strength.
The conventional use of titanium alloy is concentrated mainly on aeronautics and space industrial circle, but many other purposes of titanium alloy
It is continuously available discovery.Wherein most representative is luxury car part, and expanding most distinct issues in application is to reduce to produce
Product cost improves processing technology and exploitation new process.It is reliable due to the quality to titanium since especially into 21 century
Property, performance stabilization, formulate unified standard and develop the fields such as the process unit technology of new process and titanium there are the problem of obtain
Positive solution and significant progress is achieved, especially in the fields such as aerospace, chemical industry, biologic medical.
China aero titanium alloy application study technology, has reached advanced level by the development of many years, either
Low-intensity high-ductility titanium alloy, middle strength titanium alloys, high strength titanium alloy, superhigh intensity titanium alloy, damage tolerance titanium alloy, height
Warm titanium alloy, the research of Burn-Resistant Titanium Alloy and fiber reinforced titanium matrix composite and application have been obtained for very big progress.With
China Ti industry stable development, titanium application expands year by year.In particular with the development of civilian industry, every profession and trade technology is not
Disconnected to update, equipment develops to enlargement, automation, serialization and seriation direction, and the application range of titanium increases year by year with quantity
Add.But in recent years, with the increase of the operating power of every field machinery, it is desirable that titanium alloy has more superior heat resistance performance
Demand it is also more more and more urgent.
Material is the material base that human society is depended on for existence, makes a general survey of the history of human development, every kind of important new material
It was found that and using all the capability improving of mankind's nature remodeling to a new level.In the contemporary society that science and technology is with rapid changepl. never-ending changes and improvements,
The breakthrough of the great science and technology of each single item also largely has relied on the development of corresponding new material.New material is modern science and technology
Originally, the development of new and high technology at this stage is often to break through with new material technology for development.In view of titanium alloy application field and
Usage amount, it may be said that the development and application of new titanium alloy material represents a national scientific and technological level to a certain extent.
With the development of the world today and the raising of living standards of the people, to Ti alloy with high performance material and it is used in
The demand of extreme environment advanced titanium alloys material is also more and more.Currently, facing the advantageous of international titanium metal material high speed development
Situation, the titanium alloy resource for developing, making good use of China are of great practical significance.Predictably titanium-base alloy meeting
More extensive application prospect is shown in industrial circle and national defence.
Summary of the invention
The purpose of the present invention is to overcome the deficiency in the prior art, provides one kind 500-600 degree under non-oxidizing atmosphere and uses
Novel fire resistant titanium alloy.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses.By weight percentage, the group of alloy
As Li:1.0-1.2wt.%, In:5.0-8.0wt.%, Mg:2.0-4.0wt.%, Sb:0.5-0.8wt.%, Fe:4.1-
4.2wt.%, Y:1.2-1.4wt.%, Ru:0.3-0.5wt.%, Th:0.4-0.6wt.%, surplus are titanium.
A kind of above-mentioned novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses, includes the following steps: original
Material uses titanium sponge, and alloying element is added in the form of pure metal or intermediate alloy；Alloy raw material is through under argon gas protection environment
After ingredient and mixing, small electrode is pressed into press；Several small electrode groups are welded together, are put into argon gas protection self-consuming furnace
Melting 3 times；During last melting once, melts of titanium alloy is cast in argon gas protection stove and is come out of the stove；Alloy casting is adopted
With the punching block of diameter 100-150mm, and cooled down by the way of water cooling.Precise forging machine is used to forge at room temperature casting rod,
Drafts per pass is 4-6%；An intermediate annealing is carried out between every 3 passage, temperature is 530-550 degree, 1.2 hours；It can be with
Using multiple forging, until forging stick diameter is between 40-60mm；Last heat treating regime are as follows: 300-320 degree solution treatment
It is 1.5 hours, then air-cooled.
Compared with prior art, the invention has the following beneficial effects:
(1) reinforcing of alloy material, generally by solution strengthening, precipitation strength, processing hardening is strengthened and dispersion-strengtherning comes in fact
Existing.Wherein, solution strengthening, precipitation strength and processing hardening strengthen meeting declines as the temperature rises.Its mechanism is
Precipitation strength can make precipitate dissolve as the temperature rises, cause strength reduction.And processing hardening then can be by
Recovery and recrystallization has occurred in temperature raising, causes dislocation density to reduce, so that material softens.Although can be
Inert dispersion strengthening phase, such as tiny alumina particle are added in alloy substrate, but this material is in the fabrication process
The homogenization problem of these disperse phases in the material is faced, thus is also not easy to prepare.As it can be seen that develop one kind in height
The alloy for having ideal mechanical property under temperature is relatively difficult something.It also is exactly the constraint of these design concepts, so that
A high temperature alloy is developed to be also intended to undergo permanent effort just obtainable achievement.In recent years, with to multicomponent alloy heat
The increase of mechanics and phasor understanding, the anti-temperature characterisitic of phase transition presented under the variation of temperature using multicomponent alloy are carried out
The alloy material design used under higher temperature is a kind of very new design concept.This patent is namely based on the anti-temperature of phase transition
A kind of novel fire resistant class titanium alloy spending characteristic and designing, and alloy non-oxidizing atmosphere at a temperature of 500-600 is (true
Empty or protective atmosphere) under there is excellent mechanical behavior under high temperature.
(2) titanium has two kinds of solid-phase constructions of hcp and bcc, thus common titanium alloy is divided into hcp titanium alloy, and bcc titanium closes
Gold and hcp+bcc titanium alloy three types.Hcp and the bcc phase transition temperature of pure titanium are 882 degree, thus the transformation after alloying
Change dramatically can occur for temperature, be far longer than or be less than the temperature.In addition, hcp is due to cunning from the perspective of material deformation
The quantity for moving system is less than the slip system of bcc, thus hcp phase can regard hardening constituent as to a certain extent.By in bcc matrix
The content and form for controlling hcp phase, can embody the ability of the resistance to deformation of hcp.But regrettably, mesh
The titanium alloy of the preceding hcp+bcc phase designed both at home and abroad, during as the temperature rises, hcp's phase structure of the alloy meets
It is continuous to reduce, and the mechanical property of the alloy is reduced as the temperature rises.The titanium alloy of present patent application protection,
Although having hcp and bcc two-phase, the content of hcp phase instead can be with the liter of temperature within the temperature range of 500-600 degree
It is high and the phenomenon that increase, counteract mechanical property reduction caused by temperature rises to a certain extent.
(3) alloy material phase structure with the variation of temperature it is closely related with Multi-Component Phase Diagram.It is said in principle, n member alloy body
The phasor of system is n dimension, and wherein monophase field, two-phase section ..., n phase region all have n dimension.Since the phase region of Multi-Component Phase Diagram changes multiplicity
Property, thus appropriate alloy is selected to make the content of alloy hcp phase in the humidity province of setting can be with the liter of temperature at branch
High increase.This design is so that the mechanical property of such titanium alloy has anti-temperature characterisitic, and the mechanical property of alloy is not only not
It can decline with the rising of temperature, can show to stablize the certain numerical value or increase the phenomenon that instead.Thus designing
When such material, as long as temperature range is fixed as the optimum working temperature range of alloy material, find in the temperature model
It encloses interior hcp to meet as the temperature rises and increased alloying component, and the alloy of the ingredient has ideal room temperature mechanical property
Energy and mechanical behavior under high temperature, can be achieved with the anti-temperature mechanics performance design of the alloy.
(4) titanium alloy of the invention can show the characteristic of anti-temperature within the temperature range of 500-600 degree, have foot
Enough mechanical strengths.After temperature is greater than 600 degree, due to hcp phase content reduction and make the mechanical property of alloy sharply under
Drop.At normal temperature, the yield strength of the alloy maintains 1020-1250MPa, tensile strength 1180-1320MPa, elongation percentage
For 10-14%.The ambient temperature mechanical properties of the alloy have had reached the mechanics of most widely used at present Ti-6A1-4V titanium alloy
It is horizontal.In the temperature range of 500-600 degree, the yield strength of the alloy maintains 1080-1200MPa, tensile strength 1150-
1360Pa, elongation percentage 18-20%.Thus, guarantee increase temperature mechanical property due to anti-temperature characterisitic without reduction before
It puts, which can be used for aerospace, chemical industry, and the fields such as traffic have the occasion of strict demand to the high-temperature behavior of alloy.
(5) titanium alloy of present patent application is while guaranteeing excellent ambient temperature mechanical properties, by the anti-TEMPERATURE FORCE of alloy
It learns performance design to be introduced into titanium alloy, and specifies the titanium alloy component model for being suitble to work in 500-600 degree temperature range
Enclose, ensure that titanium alloy operating temperature raising after will not due to mechanical property reduction and generating material failure behaviour,
To improve the safety that titanium alloy device works in higher temperature.In addition, alloy processing smelting process is simple, Cheng Chancheng
This is low, is convenient for industrialization large-scale production and actual use.
Specific embodiment
Embodiment 1
A kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses.By weight percentage, the group of alloy
As Li:1.0wt.%, In:5.0wt.%, Mg:2.0wt.%, Sb:0.5wt.%, Fe:4.1wt.%, Y:1.2wt.%, Ru:
0.3wt.%, Th:0.4wt.%, surplus are titanium.A kind of above-mentioned novel fire resistant titanium that the 500-600 degree under non-oxidizing atmosphere uses
Alloy includes the following steps: raw material using titanium sponge, and alloying element is added in the form of pure metal or intermediate alloy；Alloy
Raw material is pressed into small electrode after ingredient under argon gas protection environment and mixing, with press；Several small electrode groups are welded together,
It is put into argon gas protection self-consuming furnace melting 3 times；During last melting once, by melts of titanium alloy in argon gas protection stove
Casting is come out of the stove；Alloy casting uses the punching block of diameter 100-150mm, and is cooled down by the way of water cooling.At room temperature by casting rod
It is forged using precise forging machine, drafts per pass is 4-6%；An intermediate annealing, temperature 530- are carried out between every 3 passage
550 degree, 1.2 hours；It can be using repeatedly forging, until forging stick diameter is between 40-60mm；Last heat treating regime
Are as follows: 300-320 degree solution treatment 1.5 hours, it is then air-cooled.
The alloy is the anti-temperature characterisitic based on phase transition and a kind of novel fire resistant class titanium alloy designed, and the conjunction
Gold has excellent high-temperature mechanics ability at a temperature of 500-600.The alloy is although have hcp and bcc two-phase, hcp phase
Content can increase as the temperature rises instead within the temperature range of 500-600 degree, counteract temperature to a certain extent
The phenomenon that mechanical property caused by degree rises reduces.At normal temperature, the yield strength of the alloy maintains 1040MPa, and tension is strong
Degree is 1250MPa, elongation percentage 12%.The ambient temperature mechanical properties of the alloy have had reached most widely used at present Ti-6A1-
The mechanics of 4V titanium alloy is horizontal.In the temperature range of 500-600 degree, the yield strength of the alloy maintains 1060MPa, and tension is strong
Degree is 1280Pa, elongation percentage 19%.Thus, guaranteeing to increase temperature mechanical property since anti-temperature characterisitic is without reduction
Under the premise of, which can be used for aerospace, chemical industry, and the fields such as traffic have the field of strict demand to the high-temperature behavior of alloy
It closes.
Embodiment 2
A kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses.By weight percentage, the group of alloy
As Li:1.2wt.%, In:8.0wt.%, Mg:4.0wt.%, Sb:0.8wt.%, Fe:4.2wt.%, Y:1.4wt.%, Ru:
0.5wt.%, Th:0.6wt.%, surplus are titanium.A kind of above-mentioned novel fire resistant titanium that the 500-600 degree under non-oxidizing atmosphere uses
Alloy includes the following steps: raw material using titanium sponge, and alloying element is added in the form of pure metal or intermediate alloy；Alloy
Raw material is pressed into small electrode after ingredient under argon gas protection environment and mixing, with press；Several small electrode groups are welded together,
It is put into argon gas protection self-consuming furnace melting 3 times；During last melting once, by melts of titanium alloy in argon gas protection stove
Casting is come out of the stove；Alloy casting uses the punching block of diameter 100-150mm, and is cooled down by the way of water cooling.At room temperature by casting rod
It is forged using precise forging machine, drafts per pass is 4-6%；An intermediate annealing, temperature 530- are carried out between every 3 passage
550 degree, 1.2 hours；It can be using repeatedly forging, until forging stick diameter is between 40-60mm；Last heat treating regime
Are as follows: 300-320 degree solution treatment 1.5 hours, it is then air-cooled.
The alloy is the anti-temperature characterisitic based on phase transition and a kind of novel fire resistant class titanium alloy designed, and the conjunction
Gold has excellent high-temperature mechanics ability at a temperature of 500-600.The alloy is although have hcp and bcc two-phase, hcp phase
Content can increase as the temperature rises instead within the temperature range of 500-600 degree, counteract temperature to a certain extent
The phenomenon that mechanical property caused by degree rises reduces.At normal temperature, the yield strength of the alloy maintains 1060Pa, tensile strength
For 1280MPa, elongation percentage 12%.The ambient temperature mechanical properties of the alloy have had reached most widely used at present Ti-6A1-4V
The mechanics of titanium alloy is horizontal.In the temperature range of 500-600 degree, the yield strength of the alloy maintains 1120MPa, tensile strength
For 1300Pa, elongation percentage 18%.Thus, guarantee increase temperature mechanical property due to anti-temperature characterisitic without reduction before
It puts, which can be used for aerospace, chemical industry, and the fields such as traffic have the occasion of strict demand to the high-temperature behavior of alloy.
Embodiment 3
A kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses.By weight percentage, the group of alloy
As Li:1.1wt.%, In:5.2wt.%, Mg:2.5wt.%, Sb:0.6wt.%, Fe:4.1wt.%, Y:1.3wt.%, Ru:
0.4wt.%, Th:0.5wt.%, surplus are titanium.A kind of above-mentioned novel fire resistant titanium that the 500-600 degree under non-oxidizing atmosphere uses
Alloy includes the following steps: raw material using titanium sponge, and alloying element is added in the form of pure metal or intermediate alloy；Alloy
Raw material is pressed into small electrode after ingredient under argon gas protection environment and mixing, with press；Several small electrode groups are welded together,
It is put into argon gas protection self-consuming furnace melting 3 times；During last melting once, by melts of titanium alloy in argon gas protection stove
Casting is come out of the stove；Alloy casting uses the punching block of diameter 100-150mm, and is cooled down by the way of water cooling.At room temperature by casting rod
It is forged using precise forging machine, drafts per pass is 4-6%；An intermediate annealing, temperature 530- are carried out between every 3 passage
550 degree, 1.2 hours；It can be using repeatedly forging, until forging stick diameter is between 40-60mm；Last heat treating regime
Are as follows: 300-320 degree solution treatment 1.5 hours, it is then air-cooled.
The alloy is the anti-temperature characterisitic based on phase transition and a kind of novel fire resistant class titanium alloy designed, and the conjunction
Gold has excellent high-temperature mechanics ability at a temperature of 500-600.The alloy is although have hcp and bcc two-phase, hcp phase
Content can increase as the temperature rises instead within the temperature range of 500-600 degree, counteract temperature to a certain extent
The phenomenon that mechanical property caused by degree rises reduces.At normal temperature, the yield strength of the alloy maintains 1070MPa, and tension is strong
Degree is 1190MPa, elongation percentage 12%.The ambient temperature mechanical properties of the alloy have had reached most widely used at present Ti-6A1-
The mechanics of 4V titanium alloy is horizontal.In the temperature range of 500-600 degree, the yield strength of the alloy maintains 1080MPa, and tension is strong
Degree is 1200Pa, elongation percentage 19%.Thus, guaranteeing to increase temperature mechanical property since anti-temperature characterisitic is without reduction
Under the premise of, which can be used for aerospace, chemical industry, and the fields such as traffic have the field of strict demand to the high-temperature behavior of alloy
It closes.
Claims (3)
1. a kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses；According to weight percent, the alloy
Ingredient are as follows: Li:1.0-1.2wt.%, In:5.0-8.0wt.%, Mg:2.0-4.0wt.%, Sb:0.5-0.8wt.%, Fe:4.1-
4.2wt.%,Y:1.2-
1.4wt.%, Ru:0.3-0.5wt.%, Th:0.4-0.6wt.%, surplus are titanium.
2. a kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses according to claim 1, special
Sign is to include following smelting step: raw material use titanium sponge, and alloying element is added in the form of pure metal or intermediate alloy；
Alloy raw material is pressed into small electrode after ingredient under argon gas protection environment and mixing, with press；Several small electrode groups are welded in
Together, it is put into argon gas protection self-consuming furnace melting 3 times；During last melting once, melts of titanium alloy is protected in argon gas
Casting is come out of the stove in furnace retaining；Alloy casting uses the punching block of diameter 100-150mm, and is cooled down by the way of water cooling.
3. a kind of novel fire resistant titanium alloy that the 500-600 degree under non-oxidizing atmosphere uses according to claim 1, special
Sign is comprising following procedure of processing: using precise forging machine to forge at room temperature casting rod, drafts per pass is 4-6%；
An intermediate annealing is carried out between every 3 passage, temperature is 530-550 degree, 1.2 hours；It can be using repeatedly forging, until forging stick
Diameter is between 40-60mm；Last heat treating regime are as follows: 300-320 degree solution treatment 1.5 hours, it is then air-cooled.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778011A (en) * | 2019-03-25 | 2019-05-21 | 杭州辰卓科技有限公司 | A kind of single-phase β high-damping high thermal conductivity titanium alloy of novel dislocation atmosphere mechanism and technique |
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| CN109778011A (en) * | 2019-03-25 | 2019-05-21 | 杭州辰卓科技有限公司 | A kind of single-phase β high-damping high thermal conductivity titanium alloy of novel dislocation atmosphere mechanism and technique |
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Application publication date: 20181228 |