CN107739888A - A kind of Ti V based alloys and its application with good increasing material manufacturing forming property - Google Patents
A kind of Ti V based alloys and its application with good increasing material manufacturing forming property Download PDFInfo
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- CN107739888A CN107739888A CN201711089219.3A CN201711089219A CN107739888A CN 107739888 A CN107739888 A CN 107739888A CN 201711089219 A CN201711089219 A CN 201711089219A CN 107739888 A CN107739888 A CN 107739888A
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- 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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Abstract
A kind of Ti V based alloys and its application with good increasing material manufacturing forming property, belong to metal increases material manufacturing technology field.The composition of Ti V based alloys is derived from double cluster design of alloy models, alloying element atomic percent（at.%）Statement formula is Ti62.50 2.0(Ti,Zr,Hf)6.25 0.5(V,Nb,Ta,Al,Mo)31.25 2, wherein Ti, Zr, Hf elements are single or the total amount of mixing is 6.250.5 at.%, V, Nb, Ta, Al, Mo elements are single or the total amount of its mixing is 31.252 at.%, other element overall controls are within 1 at.%；The alloy main alloying elements are V element, β phase stable elements V, which has, reduces liquid-solid phase area, improves alloy melt stability, enhancing alloy flowability is so that alloy has the function that good crystallized ability, melt and solid structure compatibility are ensure that simultaneously, is shaped available for increasing material manufacturing.
Description
Technical field
The present invention relates to a kind of Ti-V based alloys with good increasing material manufacturing forming property and its application, gold is expected to be used for
Belong to increases material manufacturing technology field.
Background technology
For titanium alloy due to high with specific strength, corrosion resistance is good, and mechanical behavior under high temperature is excellent and the features such as good biocompatibility
It has been widely used in all trades and professions.But high processing cost limits its application, however, increases material manufacturing technology goes out
Now then breach the limitation of conventional art.Increasing material manufacturing is a kind of based on mathematical model, and heat is used as using high energy beam particle flux
Source, material is point-by-point or successively accumulation forms the emerging manufacturing process of Three-dimensional Entity Components.Compared with conventional art, increasing material manufacturing
Technology saves at least 30% ~ 50% man-hour and reduces by 20% ~ 35% cost, and the processing benefit and economy for greatly improving part are imitated
Benefit.In terms of performance, because with metal material in the region of very little reciprocation occurs for high energy beam in a short period of time,
The strong heat exchange effect of cold conditions base material, causes laser molten pool and heat affecting around the quick heating of material surface regional area and molten bath
The cooldown rate in area can reach 102~106K/s or so, typical near quick setting and solid-state phase changes feature is presented, ensure that gold
Category part has good mechanical property.Alloy is that traditional casting alloy or forging are closed mostly used by increasing material manufacturing at present
Gold, but the composition design of these alloys is in the technology characteristics of casting or forging process, tissue and alloying feature for alloy
And strengthened mechanism, and the operational characteristic of increasing material manufacturing determines its tissue and alloying feature certainty and traditional casting or forging
Part has bigger difference so that the design of these alloys can not generally give full play to the mechanical property of increasing material manufacturing component, it is necessary to
The design of increasing material manufacturing special metals is re-started, and the alloy that is mainly characterized by of increasing material manufacturing undergoes from melting in a short time
To the overall process of solidification, therefore core sorting basis are the compatibility with high melt stability and melt and solid structure,
And from the point of view of structure root, the various performances of material are relevant with chemical short-range order.Chemical short range sequence structure is described by introducing
Cluster adds connection atom model, finds corresponding short-range order construction unit and its empirical formula, is the accurate control shape control of increasing material manufacturing
Property provide special metals material sorting basis.
The content of the invention
The present invention is based on the composition at eutectic point on Ti-V phasors, it is determined that the composition of the system alloy and forming property it
Between rule, and the double cluster alloys proposed for Ti-V system alloys design a model, and the model is by establishing in solid solution
Solute short-range order Local Structure, obtain most stable melt and between good melt and solid compatibility solid solution structure,
So that it is determined that there is the ideal composition of the Ti-V based alloys of favorable forming property.
The technical solution adopted by the present invention is：A kind of Ti-V based alloys with good increasing material manufacturing forming property, atom
Percentage statement formula is Ti62.50 2.0(Ti,Zr,Hf)6.25 0.5(V,Nb,Ta,Al,Mo)31.25 2, wherein Ti, Zr, Hf element lists
One or mixing total amount be 6.250.5 at.%, V, Nb, Ta, Al, Mo elements are single or the total amount of its mixing is 31.252 at.%, other element overall controls are within 1 at.%；The main alloy element of the Ti-V based alloys is for subtracting
Small liquid-solid phase area, alloy melt stability is improved, strengthens alloy flowability, make alloy that there is good crystallized ability and ensure molten
Body and the V element of solid structure compatibility.
The composition that the Ti-V based alloys are applied to increases material manufacturing technology special titanium alloy is built.
Using above-mentioned technical scheme, designed a model according to double cluster alloys and implement design of alloy, the model provides
Chemical short-range order construction unit and corresponding empirical formula.Alloying element builds stable solid solution structure list with matrix titanium elements first
Member, in Ti-V systems, the empirical formula of stable solid solution is [V-Ti14+V-Ti8V6]V2=V10Ti22, wherein being mixed with titanium in negative
The element V of enthalpy is located at the center of cluster.Carried out to obtain good mechanical property, it is necessary to add multicomponent alloy element
Optimizing components, the addition of alloying element are then that interatomic integer replacement is carried out on the basis of cluster formula.Finally determine more
Constituent element titanium alloy component formula is Ti62.50 2.0(Ti,Zr,Hf)6.25 0.5(V,Nb,Ta,Al,Mo)31.25 2, wherein (Ti, Zr, Hf)
Element is single or the total amount of mixing is 6.250.5 at.%, (V, Nb, Ta, Al, Mo) element it is single or its mixing it is total
Measure as 31.252 at.%, other element overall controls are within 1 at.%.
In alloy of the present invention, V content is increased to 31.252 at.%, other alloying element contents are relatively low.V
The increase of content, solid-liquid phase region is reduced, improves alloy flowability, improve the crystallized ability of titanium alloy, other alloy members
Element the relatively low mobility for equally reducing solid-liquid phase region, enhancing alloy of content, make alloy have good melt with
The compatibility of solid structure.
The beneficial effects of the invention are as follows：1）(V, Nb, Ta, Al, Mo) element is single or the total amount of its mixing is 31.25
During 2 at.%, alloy has good mechanical property and crystallized ability；2）(Ti, Zr, Hf) element it is single or mixing total amount
For 6.25During 0.5 at.%, there is good combination property； 3）Designed a model by double cluster alloys, control alloy member
It plain addition, ensure that alloy has less liquid-solid phase area, while there is good mechanical property again.
Brief description of the drawings
Fig. 1 is Ti-V binary phase diagramls.
Specific implementation method
Following examples will be further described to the present invention.
The system based on Ti-V alloys, according to double cluster alloys design a model carry out alloying element atom integer replace
Generation.Wherein (Ti, Zr, Hf) element is single or the total amount of mixing is 6.250.5 at.%, (V, Nb, Ta, Al, Mo) element list
One or its mixing total amount be 31.252 at.%, other element overall controls are within 1 at.%.
Illustrate the embodiment of the present invention below in conjunction with specific experiment step.
1st, the preparation of alloy：Designed a model [V-Ti according to double cluster alloys14+V-Ti8V6]V2=V10Ti22, obtain binary conjunction
Golden composition is V31.3Ti68.7(at.%) element, is changed into mass percent 32.7V-67.3Ti (wt.%) by atomic percent
Carry out composition proportion；Multiple melting is carried out to the alloy raw material of preparation under Ar gas atmosphere protections using vacuum arc furnace ignition, makes conjunction
Golden composition is uniform, obtains master alloy ingot.The composition is near Fig. 1 eutectic point.
2nd, the observation of as-cast structure：Metallographic preparation is carried out to as-cast specimen, tissue is carried out to sample using metallographic microscope
Observation.
3rd, the test of mechanical property：In 32V-68Ti (wt.%) into office, alloy bends under different Technologies for Heating Processing
Clothes are respectively：782MPa and 956MPa, compared with other composition alloys, the mechanical property of the alloy is preferable.
4th, laser machine：The thin slice for being 0.5mm into thickness with linear cutter by master alloy ingot, grind off sheet surface and draw
Trace；Thin slice after processing is placed on the pure Ti plates that length × width × height is 20mm × 20mm × 10mm, uses laser-processing system
It is processed, is completely melt sample, protective atmosphere is Ar gas.
5th, the observation organized after laser machining：Sample macro morphology after observation Laser Processing is found, after laser scanning
32V-68Ti (wt.%) alloys macro morphology is raises up, and surface is smooth, and forming property is good.
Microscopic structure and performance corresponding to 1 different V contents of table and heat treatment temperature
Claims (2)
1. a kind of Ti-V based alloys with good increasing material manufacturing forming property, it is characterized in that：The Ti-V based alloys pantogen
Sub- percentage statement formula is Ti62.50 2.0(Ti,Zr,Hf)6.25 0.5(V,Nb,Ta,Al,Mo)31.25 2, wherein Ti, Zr, Hf elements
Single or mixing total amount is 6.250.5 at.%, V, Nb, Ta, Al, Mo elements are single or the total amount of its mixing is
31.252 at.%, other element overall controls are within 1 at.%；The main alloy element of the Ti-V based alloys is use
In reducing liquid-solid phase area, improve alloy melt stability, strengthen alloy flowability, make alloy that there is good crystallized ability and guarantor
Demonstrate,prove melt and the V element of solid structure compatibility.
2. a kind of application of Ti-V based alloys with good increasing material manufacturing forming property according to claim 1, it is special
Sign is：The composition that the Ti-V based alloys are applied to increases material manufacturing technology special titanium alloy is built.
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| CN201711089219.3A CN107739888A (en) | 2017-11-08 | 2017-11-08 | A kind of Ti V based alloys and its application with good increasing material manufacturing forming property |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176221A (en) * | 2020-10-26 | 2021-01-05 | 大连理工大学 | Novel Ti-Zr-V-Nb alloy for laser additive manufacturing |
| CN113025843A (en) * | 2021-02-23 | 2021-06-25 | 大连理工大学 | Ti-Al-V-Zr high-temperature-resistant high-strength and high-toughness titanium alloy with good additive manufacturing performance and application thereof |
-
2017
- 2017-11-08 CN CN201711089219.3A patent/CN107739888A/en active Pending
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| 丁龙先等: "《钛及其合金耐磨涂层与性能》", 31 December 2006, 东北大学出版社 * |
| 李彬彬等: "Ti-Al 系金属间化合物的制备工艺研究", 《金属材料与冶金工程》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176221A (en) * | 2020-10-26 | 2021-01-05 | 大连理工大学 | Novel Ti-Zr-V-Nb alloy for laser additive manufacturing |
| CN113025843A (en) * | 2021-02-23 | 2021-06-25 | 大连理工大学 | Ti-Al-V-Zr high-temperature-resistant high-strength and high-toughness titanium alloy with good additive manufacturing performance and application thereof |
| CN113025843B (en) * | 2021-02-23 | 2022-02-18 | 大连理工大学 | Ti-Al-V-Zr high-temperature-resistant high-strength and high-toughness titanium alloy with good additive manufacturing performance and application thereof |
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