CN113549855B - Preparation method of hydrogen-containing titanium alloy wire for additive manufacturing - Google Patents

Preparation method of hydrogen-containing titanium alloy wire for additive manufacturing Download PDF

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CN113549855B
CN113549855B CN202110821531.7A CN202110821531A CN113549855B CN 113549855 B CN113549855 B CN 113549855B CN 202110821531 A CN202110821531 A CN 202110821531A CN 113549855 B CN113549855 B CN 113549855B
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titanium alloy
hydrogen
alloy ingot
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alloy wire
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CN113549855A (en
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郭艳华
郭才宝
孙中刚
戴国庆
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Nanjing Tech University
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • 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
    • C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • 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
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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Abstract

The invention provides a preparation method of a hydrogen-containing titanium alloy wire for additive manufacturing, which comprises the following steps: homogenizing and heating a titanium alloy ingot; putting the titanium alloy ingot into a closed tubular hydrogenation heating furnace, and introducing hydrogen to carry out solid-state hydrogenation treatment under a vacuum environment to obtain a hydrogenated titanium alloy ingot; putting the hydrogenated titanium alloy ingot into a heat treatment furnace for solution treatment; carrying out hot drawing process with preset deformation on the titanium alloy ingot subjected to solution treatment, and carrying out furnace cooling after drawing to obtain a titanium alloy wire; and carrying out aging treatment on the hot-drawn titanium alloy wire to obtain the hydrogen-containing titanium alloy wire for additive manufacturing. The invention can obviously reduce the phase-change temperature and reduce the heat required in the production process, thereby reducing the manufacturing cost, and the firm workpiece printed by the invention has excellent tensile strength, elongation and shear stress performance.

Description

Preparation method of hydrogen-containing titanium alloy wire for additive manufacturing
Technical Field
The invention relates to the technical field of titanium alloy, in particular to a method for preparing a hydrogen-containing titanium alloy wire for additive manufacturing, which improves the shaping of the titanium alloy wire.
Background
The production process of the titanium alloy wire can be realized by hot drawing or rolling of the titanium alloy bar, and due to the poor thermoplasticity, the heat required by the manufacture of the titanium alloy wire is huge, the production period and the production cost are higher, the efficiency is low, and the titanium alloy wire is a key factor for restricting the marketization and the large-scale application of the titanium alloy.
Because titanium has a high yield ratio, good elasticity and high deformation resistance, but the elastic modulus of titanium is relatively low, the titanium has high deformation resistance and high rebound resilience during processing, and the adhesion problem in the processing process also has a bad influence on the surface quality of products.
Disclosure of Invention
The invention aims to provide a preparation method of a hydrogen-containing titanium alloy wire for additive manufacturing aiming at the current situations of low processing efficiency, poor forming performance, high processing difficulty, poor use performance of a workpiece and the like of the existing titanium alloy wire, which can obviously reduce the phase-change temperature, greatly reduce the heat required in the production process and further reduce the manufacturing cost.
The first aspect of the invention provides a preparation method of a hydrogen-containing titanium alloy wire for additive manufacturing, which comprises the following steps:
step 1, carrying out homogenization heating treatment on a titanium alloy ingot, wherein the titanium alloy ingot is a titanium alloy bar with a certain length and diameter;
step 2, putting the titanium alloy ingot into a closed tubular hydrogenation heating furnace, and introducing hydrogen into the furnace to carry out solid-state hydrogenation treatment in a vacuum environment to obtain a hydrogenated titanium alloy ingot;
step 3, putting the hydrogenated titanium alloy ingot into a heat treatment furnace for solution treatment;
step 4, carrying out hot drawing process with preset deformation on the titanium alloy ingot subjected to solution treatment, and cooling the furnace after drawing to obtain a titanium alloy wire; and
and 5, carrying out aging treatment on the hot-drawn titanium alloy wire to obtain the hydrogen-containing titanium alloy wire for additive manufacturing.
Preferably, in the step 1, the homogenizing and heating treatment of the titanium alloy ingot includes:
and (3) uniformly heating the titanium alloy ingot at the temperature of 980-990 ℃ and preserving the heat for 4-8 h.
Preferably, in step 2, the operation of the solid state hydrogen placing treatment specifically includes:
vacuumizing the inner cavity of the tubular hydrogen-containing heating furnace with the titanium alloy ingot to 1.5 x 10-3Pa, heating to 700-800 ℃ at the speed of 10-20 ℃/min, and preserving heat for 10-30 min;
then, filling 0.45-0.8% of hydrogen according to the weight percentage of the titanium alloy ingot; and (4) preserving the heat for 2h, and then cooling to room temperature at the speed of 5-15 ℃/min to obtain the hydrogen-containing titanium alloy ingot.
Preferably, the solution treatment of step 3, as shown, comprises:
putting the hydrogen-containing titanium alloy ingot into a heat treatment furnace, and heating to T at the speed of 10-20 ℃/minβKeeping the temperature at 10 ℃ for 20-40 min, and then quenching; t is a unit ofβThe titanium alloy wire is at the beta phase transition temperature;
preferably, the specific processing of the step 4 comprises the following processes:
placing the titanium alloy ingot after solid solution into a heat treatment furnace and controlling the temperature to be kept in a preset drawing temperature range; the heat preservation time is determined by the length of the titanium alloy ingot and the calculation of 0.6 min/mm-1.0 min/mm;
after heat preservation, carrying out drawing on the titanium alloy ingot after solid solution for many times, ensuring that the temperature during drawing is higher than 750 ℃ each time, and if the temperature is lower than 750 ℃, putting the titanium alloy ingot into a heat treatment furnace and controlling the temperature to be preserved in a preset drawing temperature interval, wherein the heat preservation time is determined by calculating the length of the titanium alloy ingot and 0.3-0.5 min/mm; until the drawn titanium alloy wire reaches the preset diameter size requirement.
Preferably, the preset drawing temperature interval is Tβ-50℃～Tβ-30℃。
Preferably, in the step 5, the titanium alloy wire subjected to hot drawing is subjected to aging treatment at a temperature range of 500-550 ℃, the heat preservation time is 4-6h, and then furnace cooling is carried out to room temperature, so as to obtain the titanium alloy wire.
Preferably, in the step 2, the process of vacuumizing includes:
vacuumizing for the first time, introducing argon after reaching a preset vacuum degree, and vacuumizing again; and (4) circularly treating for 2-3 times according to the modes of vacuumizing, argon introducing and vacuumizing, and introducing hydrogen after exhausting air in the furnace.
Compared with the prior art, the invention has the following remarkable beneficial effects:
the hydrogen treatment before drawing is carried out, so that the thermoplasticity of the titanium alloy is increased, the internal structure state of the titanium alloy is improved, and the hot forming performance of the titanium alloy is optimized; by utilizing the temporary alloying effect of hydrogen in the titanium alloy, the phase transition temperature can be obviously reduced, and the heat required in the production process is greatly reduced, so that the manufacturing cost is reduced.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. Additionally, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic flow diagram of a method of making a hydrogen-containing titanium alloy wire for additive manufacturing according to an exemplary embodiment of the invention.
FIG. 2 is a schematic view of a cylindrical titanium alloy ingot used in an exemplary embodiment of the invention.
FIG. 3 is a schematic view of a solid state hydrogen loading process of a cylindrical titanium alloy ingot used in an exemplary embodiment of the present invention in a tubular hydrogen loading furnace.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
Referring to FIG. 1, the present invention provides a method for preparing a hydrogen-containing titanium alloy wire for additive manufacturing, comprising:
step 1, carrying out homogenization heating treatment on a titanium alloy ingot, wherein the titanium alloy ingot can be a titanium alloy bar with a certain length and diameter or a titanium alloy ingot with other shapes, including but not limited to a rectangle;
step 2, putting the titanium alloy ingot into a closed tubular hydrogenation heating furnace, and introducing hydrogen to carry out solid-state hydrogenation treatment under a vacuum environment to obtain a hydrogenated titanium alloy ingot;
step 3, putting the hydrogenated titanium alloy ingot into a heat treatment furnace for solution treatment;
step 4, carrying out hot drawing process with preset deformation on the titanium alloy ingot subjected to solution treatment, and cooling the furnace after drawing to obtain a titanium alloy wire; and
and 5, carrying out aging treatment on the hot-drawn titanium alloy wire to obtain the hydrogen-containing titanium alloy wire for additive manufacturing.
Preferably, in the step 1, the homogenizing and heating treatment of the titanium alloy ingot includes:
and (3) uniformly heating the titanium alloy ingot at the temperature of 980-990 ℃ and preserving the heat for 4-8 h.
Preferably, in step 2, the operation of the solid state hydrogen placing treatment specifically includes:
vacuumizing the inner cavity of the tubular hydrogen-containing heating furnace with the titanium alloy ingot to 1.5 x 10-3Pa, heating to 700-800 ℃ at the speed of 10-20 ℃/min, and preserving heat for 10-30 min;
then, filling 0.45-0.8% of hydrogen according to the weight percentage of the titanium alloy ingot; and preserving the heat for 2 hours, and then cooling to room temperature at the speed of 5-15 ℃/min to obtain the hydrogen-containing titanium alloy ingot.
Preferably, the solution treatment of step 3 includes:
putting the hydrogen-containing titanium alloy ingot into a heat treatment furnace, and heating to T at the speed of 10-20 ℃/minβKeeping the temperature at 10 ℃ for 20-40 min, and then quenching; t isβThe titanium alloy wire is at the beta phase transition temperature;
preferably, the specific processing of the step 4 comprises the following processes:
placing the titanium alloy ingot after solid solution into a heat treatment furnace and controlling the temperature to be kept in a preset drawing temperature range; the heat preservation time is determined by the length of the titanium alloy ingot and the calculation of 0.6 min/mm-1.0 min/mm;
after heat preservation, drawing the titanium alloy cast ingot subjected to solid solution for multiple times, ensuring that the temperature during each drawing is higher than 750 ℃, if the temperature is lower than 750 ℃, putting the titanium alloy cast ingot into a heat treatment furnace and controlling the temperature to be preserved in a preset drawing temperature interval, wherein the heat preservation time is determined by the length of the titanium alloy cast ingot and the calculation of 0.3 min/mm-0.5 min/mm; until the drawn titanium alloy wire reaches the preset diameter size requirement.
Preferably, the preset drawing temperature interval is Tβ-50℃～Tβ-30℃。
Preferably, in the step 5, the titanium alloy wire subjected to hot drawing is subjected to aging treatment at the temperature range of 500-550 ℃, the heat preservation time is 4-6h, and then furnace cooling is carried out to room temperature, so as to obtain the titanium alloy wire.
Preferably, in the step 2, the process of vacuumizing includes:
vacuumizing for the first time, introducing argon after reaching a preset vacuum degree, and vacuumizing again; and (4) circularly treating for 2-3 times according to the modes of vacuumizing, argon introducing and vacuumizing, and introducing hydrogen after exhausting air in the furnace.
Exemplary implementations of the foregoing embodiments are described below in conjunction with specific embodiments.
In each of examples 1 to 3, a Ti6Al4V titanium alloy ingot (TC4) prepared by vacuum melting was used as an example, and the preparation process was carried out by subjecting a sample to hydrogen treatment using solid hydrogen. A sample with the diameter of 8mm and the length of 12mm is cut from the center of an ingot by linear cutting, as shown in figure 2, is polished by sand paper, is cleaned by ultrasonic waves, is subjected to high-temperature homogenization heating treatment, is subjected to heat preservation for 4-8 hours at the temperature of 980-990 ℃, and is then subjected to treatment by 3 processes of the following examples.
The actual composition of Ti6Al4V titanium alloy ingot is shown in the following table
Ti Fe C N H O Al V
Actual ingredients Excess material 0.30 0.10 0.05 0.015 0.20 5.5-6.8 3.5-4.5
[ EXAMPLE 1 ] A process of "Hydrogen storage + solid solution + Normal temperature drawing + aging" is adopted
1) Performing hydrogen treatment on a TC4 titanium alloy ingot, specifically, putting the TC4 titanium alloy ingot into a tubular hydrogen furnace, and vacuumizing to 1.5 x 10-3Pa, heating to 700-800 ℃ at the speed of 10-20 ℃/min, preserving heat for 10-30min, filling 0.8% of hydrogen according to the weight percentage of the titanium alloy ingot, preserving heat for 2h, and then cooling to room temperature at the speed of 5-15 ℃/min to obtain a hydrogen-containing titanium alloy ingot; as shown in fig. 3;
2) carrying out solid solution treatment on the hydrogenated titanium alloy ingot, putting the titanium alloy ingot into a heat treatment furnace, and heating to T at the speed of 10-20 ℃/minβKeeping the temperature at 10 ℃ for 20-40 min, then quenching and cooling to room temperature;
3) removing surface cracks and folding the hydrogenated titanium alloy ingot, chamfering one end of the hydrogenated titanium alloy ingot, and repeatedly drawing with different deformation amounts at normal temperature until the hydrogenated titanium alloy ingot reaches the specified required size.
4) Heating the wire drawn at normal temperature to Tβ-100℃～TβAnd carrying out aging treatment at the temperature of minus 40 ℃ and then at the temperature of 500-550 ℃ to obtain the titanium alloy wire.
5) The titanium alloy wire is used for preparing a fastener.
[ EXAMPLE 2 ] A "Hydrogen storage + solid solution + Hot Pull + aging" Process is adopted
1) Removing surface cracks and folding of a TC4 titanium alloy ingot through peeling, chamfering one end, carrying out hydrogen placing treatment, specifically, placing the TC4 titanium alloy ingot into a tubular hydrogen placing furnace, and vacuumizing to 1.5 x 10-3Pa, heating to 700-800 ℃ at the speed of 10-20 ℃/min, preserving heat for 10-30min, filling 0.8% of hydrogen according to the weight percentage of the titanium alloy ingot, preserving heat for 2h, and then cooling to room temperature at the speed of 5-15 ℃/min to obtain a hydrogen-containing titanium alloy ingot;
2) carrying out solid solution treatment on the hydrogenated titanium alloy ingot, putting the titanium alloy ingot into a heat treatment furnace, and heating to T at the speed of 10-20 ℃/minβKeeping the temperature at 10 ℃ for 20min to 40min, then quenching;
3) placing a hydrogen-containing titanium alloy ingot at Tβ-50℃～TβKeeping the temperature within a temperature range of minus 30 ℃, wherein the heat preservation time is calculated as 0.6 min/mm-1.0 min/mm, carrying out hot drawing deformation on the cast ingot, the termination temperature is more than 750 ℃, and if the temperature is lower than 750 ℃ after one drawing process, directly returning to the furnace at Tβ-50℃～TβKeeping the temperature at a temperature range of minus 30 ℃, wherein the heat preservation time is calculated by 0.3min/mm to 0.5 min/mm; repeating the drawing process with different deformation amounts until reaching the specified required size;
4) and (3) carrying out aging treatment on the hot-drawn wire at the temperature range of 500-550 ℃, keeping the temperature for 4-6h, and then cooling the hot-drawn wire to room temperature in a furnace to obtain the titanium alloy wire.
5) The titanium alloy is used for preparing the fastener.
[ EXEMENT 3 ] A process of' Hydrogen replacement and Hot Pull
1) Removing surface cracks and folding of a TC4 titanium alloy ingot through peeling, chamfering one end, carrying out hydrogen placing treatment, specifically, placing the TC4 titanium alloy ingot into a tubular hydrogen placing furnace, and vacuumizing to 1.5 x 10-3Pa, heating to 700-800 ℃ at the speed of 10-20 ℃/min, preserving heat for 10-30min, filling 0.8% of hydrogen according to the weight percentage of the titanium alloy ingot, preserving heat for 2h, and then cooling to room temperature at the speed of 5-15 ℃/min to obtain a hydrogen-containing titanium alloy ingot;
2) placing a hydrogen-containing titanium alloy ingot at Tβ-50℃～TβKeeping the temperature in a temperature range of minus 30 ℃, wherein the heat preservation time is calculated as 0.6 min/mm-1.0 min/mm, carrying out two drawing processes on the cast ingot, wherein the termination temperature is more than 750 ℃, and if the temperature is lower than 750 ℃ after one drawing process, directly returning to the furnace at Tβ-50℃～TβKeeping the temperature at a temperature range of minus 30 ℃, wherein the heat preservation time is calculated by 0.3min/mm to 0.5 min/mm; and repeating the drawing process for a plurality of times with different deformation amounts until reaching the specified required size, and cooling to room temperature after drawing.
3) The titanium alloy is used for preparing a fastener.
The mechanical properties of the test pieces prepared by the processes of examples 1-3 above are shown in the following table.
Mechanical properties of wire
Figure BDA0003172138970000061
Therefore, the titanium alloy wire material regulated and controlled by combining hydrogen treatment and heat treatment in the embodiment 2 of the invention can obviously reduce the phase transition temperature and greatly reduce the heat required in the production process, thereby reducing the manufacturing cost, and the tensile strength, the elongation and the shear stress performance of the firm workpiece printed by using the titanium alloy wire material are superior to the standards of the embodiments 1 and 3, so that the high-strength titanium alloy achieves excellent comprehensive performance.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims (7)

1. A preparation method of a hydrogen-containing titanium alloy wire for additive manufacturing is characterized by comprising the following steps:
step 1, homogenizing and heating a titanium alloy ingot;
step 2, putting the titanium alloy ingot into a closed tubular hydrogenation heating furnace, and introducing hydrogen to carry out solid-state hydrogenation treatment under a vacuum environment to obtain a hydrogenated titanium alloy ingot;
step 3, putting the hydrogenated titanium alloy ingot into a heat treatment furnace for solution treatment;
step 4, carrying out hot drawing process with preset deformation on the titanium alloy ingot subjected to solution treatment, and cooling the titanium alloy ingot in a furnace after drawing to obtain a titanium alloy wire; and
and 5, carrying out aging treatment on the hot-drawn titanium alloy wire to obtain the hydrogen-containing titanium alloy wire for additive manufacturing.
2. The method for producing a hydrogen-containing titanium alloy wire for additive manufacturing according to claim 1, wherein in the step 1, the homogenizing heat treatment of the titanium alloy ingot comprises:
and (3) uniformly heating the titanium alloy ingot at the temperature of 980-990 ℃ and preserving the heat for 4-8 h.
3. The method for preparing a hydrogen-containing titanium alloy wire for additive manufacturing according to claim 1, wherein the operation of the solid-state hydrogen placing treatment in the step 2 specifically comprises:
vacuumizing the inner cavity of the tubular hydrogen-containing heating furnace with the titanium alloy ingot to 1.5 x 10-3Pa, heating to 700-800 deg.C at a speed of 10-20 deg.C/min, and maintaining for 10-30 min;
then, filling 0.45-0.8% of hydrogen according to the weight percentage of the titanium alloy ingot; and preserving the heat for 2 hours, and then cooling to room temperature at the speed of 5-15 ℃/min to obtain the hydrogen-containing titanium alloy ingot.
4. The method of preparing a hydrogen-containing titanium alloy wire for additive manufacturing according to claim 1, wherein the solution treatment of step 3 includes:
putting the hydrogen-containing titanium alloy ingot into a heat treatment furnace, and heating to T at the speed of 10-20 ℃/minβKeeping the temperature for 20-40 min at 10 ℃, and then quenching; t isβIs the beta phase transition temperature of the titanium alloy wire.
5. The method for preparing a hydrogen-containing titanium alloy wire for additive manufacturing according to claim 4, wherein the specific treatment of step 4 comprises the following processes:
placing the titanium alloy ingot after solid solution into a heat treatment furnace and controlling the temperature to be kept in a preset drawing temperature range; the heat preservation time is determined by the length of the titanium alloy ingot and the calculation of 0.6 min/mm-1.0 min/mm;
after heat preservation, drawing the titanium alloy cast ingot subjected to solid solution for multiple times, ensuring that the temperature during each drawing is higher than 750 ℃, if the temperature is lower than 750 ℃, putting the titanium alloy cast ingot into a heat treatment furnace and controlling the temperature to be preserved in a preset drawing temperature interval, wherein the heat preservation time is determined by the length of the titanium alloy cast ingot and the calculation of 0.3 min/mm-0.5 min/mm; until the diameter of the titanium alloy wire after drawing is required to be larger than the preset diameter.
6. The method of preparing a hydrogen-containing titanium alloy wire for additive manufacturing according to claim 5, wherein the predetermined drawing temperature interval is Tβ-50℃～Tβ-30℃。
7. The method for preparing the hydrogen-containing titanium alloy wire for additive manufacturing according to claim 1, wherein in the step 5, the titanium alloy wire after hot drawing is subjected to aging treatment at a temperature of 500-550 ℃, the temperature is kept for 4-6h, and then furnace cooling is carried out to room temperature to obtain the titanium alloy wire.
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