CN115351392A - Preparation method of heterogeneous titanium/stainless steel functionally-gradient composite material - Google Patents
Preparation method of heterogeneous titanium/stainless steel functionally-gradient composite material Download PDFInfo
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 87
- 239000010935 stainless steel Substances 0.000 title claims abstract description 81
- 239000010936 titanium Substances 0.000 title claims abstract description 33
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 229910001200 Ferrotitanium Inorganic materials 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000010410 layer Substances 0.000 claims abstract description 62
- 238000003466 welding Methods 0.000 claims abstract description 40
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 238000009825 accumulation Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000011229 interlayer Substances 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 20
- 238000000151 deposition Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 11
- 239000001307 helium Substances 0.000 claims description 11
- 229910052734 helium Inorganic materials 0.000 claims description 11
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 230000008021 deposition Effects 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 239000010425 asbestos Substances 0.000 claims description 9
- 229910052895 riebeckite Inorganic materials 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000010301 surface-oxidation reaction Methods 0.000 claims description 7
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 4
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- WCCJDBZJUYKDBF-UHFFFAOYSA-N copper silicon Chemical compound [Si].[Cu] WCCJDBZJUYKDBF-UHFFFAOYSA-N 0.000 claims description 2
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 238000010309 melting process Methods 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 238000010891 electric arc Methods 0.000 abstract description 2
- 239000002360 explosive Substances 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000010937 tungsten Substances 0.000 description 6
- 229910002593 Fe-Ti Inorganic materials 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- IUYOGGFTLHZHEG-UHFFFAOYSA-N copper titanium Chemical compound [Ti].[Cu] IUYOGGFTLHZHEG-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a preparation method of a heterogeneous titanium/stainless steel gradient composite material, which mainly adopts an additive preparation process, a stainless steel accumulation layer is cladded on a stainless steel substrate firstly, an intermediate alloy accumulation layer is cladded later, a titanium alloy accumulation layer is cladded finally, and interlayer temperature is regulated and controlled through induction heating to control and form. The invention is based on the traditional welding power supply, combines the electric arc additive manufacturing idea with molten pool metallurgy, and realizes the preparation of the heterogeneous titanium/stainless steel gradient composite material by utilizing the design of the middle layer. The preparation process is low in risk and energy consumption, metallurgical bonding of a heterogeneous material without a brittle layer is realized under the action of middle-layer molten pool metallurgy, the problems of high risk, high energy consumption and the existence of the brittle layer in the traditional preparation methods such as explosive welding are solved, and the preparation method is low in production cost, high in production efficiency and wide in application prospect.
Description
Technical Field
The invention belongs to the field of additive manufacturing, and particularly relates to a preparation method of a titanium/stainless steel gradient composite material difficult to weld.
Background
Under the background of social demands, the international society has more and more urgent demands for lightweight and functionalized materials. 3D printed materials and emerging functional materials are of great interest. Compared with the traditional stainless steel or titanium alloy, the titanium/stainless steel composite board with good corrosion resistance and economy is widely applied to the fields of petrifaction, salt production, seawater desalination, biomedicine and the like. The titanium/stainless steel composite plate has the advantages of both titanium alloy and stainless steel, has the characteristic of gradient change of strength and toughness on the section, and is an excellent Functional Gradient Material (FGMs). However, explosive welding or hot rolling and other methods are often adopted for preparing the titanium/stainless steel composite plate, the preparation process is low in efficiency, high in risk and high in energy consumption, a large amount of high-hardness Fe-Ti brittle phases are easily generated at the interface, internal microcracks are easily generated, and the popularization and application of the material are limited. Therefore, it is highly desirable to develop a method for preparing a titanium/stainless steel gradient material with high efficiency, low energy consumption and no hard and brittle structure.
Disclosure of Invention
Aiming at the defects of the existing preparation method, the invention provides a preparation method of a novel heterogeneous titanium/stainless steel gradient composite material.
In order to realize the purpose, the invention adopts the following technical scheme:
cleaning a stainless steel substrate, and then adopting a heat source wire melting process to melt and pile a stainless steel wire, an intermediate layer wire and a titanium alloy wire on the surface of the stainless steel substrate in sequence by controlling interlayer temperature so as to prepare the heterogeneous titanium/stainless steel gradient composite material; the method specifically comprises the following steps:
(1) Brushing the surface of a stainless steel substrate by using a steel wire, then sequentially polishing the surface of the stainless steel substrate by using 240#, 400#, 800#, 1000#, and 1500# abrasive paper, then wiping the surface of the stainless steel substrate by using alcohol, then removing a surface oxidation film by using laser cleaning, finally cleaning by using alcohol, and airing;
(2) Preheating the cleaned stainless steel substrate to 50-100 ℃; melting stainless steel wire materials by a heat source, accumulating the melted stainless steel wire materials on the surface of a substrate, then covering and insulating a formed stainless steel accumulation layer by refractory asbestos, and removing a surface oxidation film by a wire brush after the surface temperature is cooled to be the same as the preheating temperature of the substrate to obtain a stainless steel plate with the stainless steel accumulation layer on the surface or the side surface; the flatness allowable deviation of the obtained stainless steel accumulation layer is +/-1 mm- +/-3 mm;
(3) Stacking an intermediate layer wire material on the surface of the stainless steel plate accumulation layer obtained in the step (2), selecting a proper interlayer temperature, melting the intermediate layer wire material through a heat source, covering and insulating the formed intermediate layer accumulation layer by adopting refractory asbestos, and removing a surface oxidation film by adopting a steel wire brush after the temperature is cooled to the substrate preheating temperature to obtain the stainless steel plate with the intermediate alloy accumulation layer on the surface or the side surface; the flatness allowable deviation of the obtained intermediate alloy accumulation layer is +/-1 mm- +/-3 mm;
(4) Depositing titanium alloy wires on the surface of the intermediate alloy deposition layer obtained in the step (3), selecting proper interlayer temperature, melting the titanium alloy wires by a welding gun (a drag cover is arranged behind the welding gun and mixed gas of helium and argon is introduced into the drag cover to avoid oxidation of the titanium alloy), covering and insulating the formed titanium alloy deposition layer by refractory asbestos in an environment of continuously introducing the mixed gas of helium and argon, and removing an oxide film on the surface by a steel wire brush after the temperature is cooled to the preheating temperature of the substrate to obtain the stainless steel plate with the titanium alloy deposition layer on the surface or the side surface; the flatness allowable deviation of the obtained titanium alloy accumulation layer is +/-1 mm- +/-3 mm;
(5) And (5) keeping the temperature of the stainless steel plate obtained in the step (4) at 100-150 ℃, preserving the heat by adopting a high-temperature-resistant heat-insulating material, and meanwhile, continuously introducing a mixed gas of helium and argon for 10min for protection to obtain the heterogeneous titanium/stainless steel gradient composite material.
Further, the heat source includes any one of non-consumable gas shielded welding, laser, electron beam, and consumable gas shielded arc welding.
Furthermore, the stainless steel wire is a stainless steel solid welding wire with the carbon content of less than 0.08 percent, and the diameter of the stainless steel solid welding wire is 1.0mm-1.5mm.
Further, the intermediate layer wire is a copper alloy welding wire, specifically any one of a copper-nickel welding wire, a copper-silicon welding wire and a copper-zinc welding wire, and the diameter of the intermediate layer wire is 1.0mm-1.5mm.
Further, the titanium alloy wire is a pure titanium welding wire or a titanium alloy welding wire, and the diameter of the titanium alloy wire is 1.0mm-1.5mm.
Further, the interlayer temperature in the step 2) and the step 3) is controlled to be 100-150 ℃ so as to ensure that the wetting angle is 30-60 degrees.
Further, relevant parameters for preparing the stainless steel stacking layer are as follows: the pulse frequency is 0-2Hz, the angle of a welding gun is 0-5 degrees, the distance between a tungsten electrode and a plate is 2.5-2.8 mm, the moving speed is 15-21 cm/min, the wire feeding inclination angle is 10-30 degrees, the wire feeding speed is 220-280 cm/min, and the protective gas flow is 13-20L/min.
Further, the relevant parameters for preparing the intermediate alloy accumulation layer are as follows: the pulse frequency is 0-2Hz, the angle of a welding gun is 0-5 degrees, the distance between a tungsten electrode and a stainless steel accumulation layer is 2.5-2.8 mm, the moving speed is 18-26 cm/min, the wire feeding inclination angle is 10-30 degrees, the wire feeding speed is 220-280 cm/min, and the protective gas flow is 13-20L/min.
Further, relevant parameters for preparing the titanium alloy accumulation layer are as follows: the pulse frequency is 0-2Hz, the angle of a welding gun is 0-5 degrees, the distance between a tungsten electrode and a copper alloy accumulation layer is 2.5-2.8 mm, the moving speed is 18-22 cm/min, the wire feeding inclination angle is 10-30 degrees, the wire feeding speed is 170-210 cm/min, and the protective gas flow is 13-20L/min.
Further, the volume ratio of helium to argon in the mixed gas in the step 4) and the step 5) is 1.
Compared with the prior art, the invention has the beneficial effects that:
the invention takes electric arc and the like as heat sources, adopts a strategy of sequentially melting stainless steel wires, copper alloy wires and titanium alloy wires, and is assisted with certain substrate preheating and interlayer temperature control, so that the titanium/stainless steel gradient composite material can be obtained. The preparation of the composite plate or pipe can be realized through simple path planning, the operation of the consumable electrode inert gas shielded arc welding and the like is simple and convenient, the requirements on field conditions are avoided, the application range is wide, the defects of high risk, high energy consumption and low production efficiency of the traditional preparation method (such as explosion welding, hot rolling and the like) are effectively overcome, and meanwhile, the preparation of the plate or pipe has the characteristic of customization.
Meanwhile, in the titanium/stainless steel gradient composite material prepared by the method, the content of the Fe element is reduced to about 5 percent, and the brittle phase of Fe-Ti is basically eliminated. And under the obstruction of the copper alloy intermediate layer, the Fe-Ti brittle intermetallic compound is effectively inhibited, the interface structure is optimized, and the interface strength is improved. The experimental result shows that the shear strength of the interface layer is 203MPa through a primary shear strength test, and the traditional preparation level is reached.
Drawings
FIG. 1 is a macro-topography of the titanium-stainless steel gradient composite prepared in the example.
FIG. 2 is a micro-topography of the titanium-copper side-weld interface prepared in the examples.
FIG. 3 is a micro-topography of the copper-steel side-weld interface prepared in the examples.
FIG. 4 is an EDS energy spectrum of a titanium buildup layer in the example. As can be seen from the figure, the content of Fe element in the Ti deposit layer is very low.
FIG. 5 is an EDS line energy spectrum of the titanium-copper side weld interface in the examples. It can be seen from the figure that the Fe element content is low and shows a downward trend in the transition stage from the Cu deposition layer to the Ti deposition layer.
Detailed Description
In order to make the present invention more comprehensible, the technical solutions of the present invention are further described below with reference to specific embodiments, but the present invention is not limited thereto.
Examples
A preparation method of a heterogeneous titanium/stainless steel gradient composite material comprises the following steps:
(1) Firstly brushing the surface of a stainless steel substrate by using a steel wire, then sequentially polishing the surface of the stainless steel substrate by using 240#, 400#, 800#, 1000#, and 1500# sandpaper, then wiping the surface of the stainless steel substrate by using alcohol, then removing a surface oxidation film by using laser cleaning, finally cleaning by using alcohol, and airing;
(2) Preheating the cleaned stainless steel substrate to 70 ℃; stacking stainless steel solid welding wires with carbon content of 0.08 and diameter of 1.0mm on the surface of a substrate, welding and melting the stainless steel solid welding wires through non-consumable electrode gas protection, then covering and preserving heat by adopting refractory asbestos, fixing a clamp all the time after the surface temperature is cooled to 70 ℃, and removing an oxide film on the surface by adopting a steel wire brush to obtain a stainless steel plate with a stainless steel stacking layer on the surface or the side surface; the flatness allowable deviation of the obtained stainless steel accumulation layer is +/-1 mm- +/-3 mm; the relevant parameters are as follows: the pulse frequency is 0 Hz, the angle of a welding gun is 0 degree, the distance between a tungsten electrode and a plate is 2.5mm, the moving speed is 18cm/min, the wire feeding inclination angle is 15 degrees, the wire feeding speed is 250cm/min, and the protective gas flow is 15L/min;
(3) Depositing copper-nickel welding wires with the diameter of 1.0mm on the surface of the stainless steel deposited layer obtained in the step (2), controlling the interlayer temperature to be 120 ℃, melting the copper-nickel welding wires through non-consumable electrode gas shielded welding, then adopting refractory asbestos to cover and preserve heat, after the temperature is cooled to 70 ℃, fixing a clamp all the time, and removing an oxide film on the surface by adopting a steel wire brush to obtain a stainless steel plate with an intermediate alloy deposited layer on the surface or the side surface; the flatness allowable deviation of the obtained intermediate alloy accumulation layer is +/-1 mm- +/-3 mm; the relevant parameters are as follows: the pulse frequency is 0 Hz, the angle of a welding gun is 0 degree, the distance between a tungsten electrode and a stainless steel stack layer is 2.5mm, the moving speed is 24cm/min, the wire feeding inclination angle is 15 degrees, the wire feeding speed is 250cm/min, and the flow of protective gas is 15L/min;
(4) Depositing a pure titanium welding wire with the diameter of 1.0mm on the surface of the intermediate alloy deposition layer obtained in the step (3), controlling the interlayer temperature to be 120 ℃, melting the pure titanium welding wire by a welding gun (a dragging cover is arranged behind the welding gun, helium and argon mixed gas (1, v/v) is introduced into the dragging cover to avoid titanium alloy oxidation), covering and insulating by adopting refractory asbestos in an environment of continuously introducing the helium and argon mixed gas (1, 4, v/v), and after the temperature is cooled to 70 ℃, fixing a clamp all the time, removing a surface oxidation film by adopting a steel wire brush to obtain a stainless steel plate with the titanium alloy deposition layer on the surface or the side surface; the flatness allowable deviation of the obtained titanium alloy accumulation layer is +/-1 mm- +/-3 mm; the relevant parameters are as follows: the pulse frequency is 0 Hz, the angle of a welding gun is 0 degree, the distance between a tungsten electrode and a copper alloy accumulation layer is 2.5mm, the moving speed is 21cm/min, the wire feeding inclination angle is 15 degrees, the wire feeding speed is 190cm/min, and the flow of protective gas is 15min;
(5) And (5) keeping the temperature of the stainless steel plate obtained in the step (4) at 100 ℃, preserving the heat by adopting a high-temperature-resistant heat-insulating material, and meanwhile, continuously introducing helium and argon (1, v/v) for 10min for protection to obtain the heterogeneous titanium/stainless steel gradient composite material.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concept. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A preparation method of a heterogeneous titanium/stainless steel gradient composite material is characterized in that a stainless steel substrate is cleaned, a heat source wire melting process is adopted, and stainless steel wires, intermediate layer wires and titanium alloy wires are sequentially melted and accumulated on the surface of the stainless steel substrate by controlling interlayer temperature, so that the heterogeneous titanium/stainless steel gradient composite material is prepared.
2. The method for preparing the heterogeneous titanium/stainless steel gradient composite material according to claim 1, which is characterized by comprising the following steps:
(1) Brushing the surface of a stainless steel substrate by using a steel wire, then sequentially polishing the surface of the stainless steel substrate by using 240#, 400#, 800#, 1000#, and 1500# abrasive paper, then wiping the surface of the stainless steel substrate by using alcohol, then removing a surface oxidation film by using laser cleaning, finally cleaning by using alcohol, and airing;
(2) Preheating the cleaned stainless steel substrate to 50-100 ℃; melting stainless steel wire materials by a heat source, accumulating the melted stainless steel wire materials on the surface of the substrate, then covering and insulating the formed stainless steel accumulation layer by adopting refractory asbestos, and removing a surface oxidation film by adopting a steel wire brush after the surface temperature is cooled to be the same as the preheating temperature of the substrate to obtain a stainless steel plate with the stainless steel accumulation layer on the surface or the side surface; the flatness allowable deviation of the obtained stainless steel accumulation layer is +/-1 mm- +/-3 mm;
(3) Stacking an intermediate layer wire material on the surface of the stainless steel stacking layer obtained in the step (2), selecting a proper interlayer temperature, melting the intermediate layer wire material through a heat source, covering and insulating the formed intermediate layer stacking layer by adopting refractory asbestos, and removing a surface oxide film by adopting a steel wire brush after the temperature is cooled to a substrate preheating temperature to obtain a stainless steel plate with an intermediate alloy stacking layer on the surface or the side surface; the flatness allowable deviation of the obtained intermediate alloy accumulation layer is +/-1 mm- +/-3 mm;
(4) Depositing titanium alloy wires on the surface of the intermediate alloy deposition layer obtained in the step (3), selecting proper interlayer temperature, melting the titanium alloy wires by a welding gun with a drag cover at the rear part and introducing mixed gas of helium and argon into the drag cover, covering and insulating the formed titanium alloy deposition layer by refractory asbestos in an environment of continuously introducing the mixed gas of helium and argon, and removing an oxide film on the surface by a steel wire brush after the temperature is cooled to the substrate preheating temperature to obtain a stainless steel plate with the titanium alloy deposition layer on the surface or the side surface; the flatness allowable deviation of the obtained titanium alloy accumulation layer is +/-1 mm- +/-3 mm;
(5) And (5) keeping the temperature of the stainless steel plate obtained in the step (4) at 100-150 ℃, preserving the heat by adopting a high-temperature-resistant heat-insulating material, and meanwhile, continuously introducing a helium and argon mixed gas for 10min for protection to obtain the heterogeneous titanium/stainless steel gradient composite material.
3. The method for preparing a gradient composite material of heterogeneous titanium/stainless steel according to claim 1 or 2, wherein the heat source comprises any one of a non-consumable electrode gas-shielded heat source, a laser heat source, an electron beam heat source and a consumable electrode gas-shielded arc heat source.
4. The method for preparing a heterogeneous titanium/stainless steel gradient composite material according to claim 1 or 2, wherein the stainless steel wire is a stainless steel solid wire with a carbon content of less than 0.08%, and the diameter of the stainless steel solid wire is 1.0mm-1.5mm.
5. The method for preparing the heterogeneous titanium/stainless steel gradient composite material according to claim 1 or 2, wherein the intermediate layer wire is a copper alloy welding wire, specifically any one of a copper-nickel welding wire, a copper-silicon welding wire and a copper-zinc welding wire, and the diameter of the intermediate layer wire is 1.0mm-1.5mm.
6. The method for preparing a heterogeneous titanium/stainless steel gradient composite material according to claim 1 or 2, wherein the titanium alloy wire is a pure titanium welding wire or a titanium alloy welding wire, and the diameter of the titanium alloy wire is 1.0mm-1.5mm.
7. The method for preparing a heterogeneous titanium/stainless steel gradient composite material according to claim 2, wherein the interlayer temperature in the step 2) and the step 3) is controlled to be 100-150 ℃ so as to ensure that the wetting angle is 30-60 degrees.
8. The method for preparing the heterogeneous titanium/stainless steel gradient composite material according to claim 2, wherein the volume ratio of helium to argon in the mixed gas in the step 4) and the step 5) is 1.
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| CN113399937A (en) * | 2021-05-14 | 2021-09-17 | 西安理工大学 | Copper/steel bimetal composite structural member combined with heat treatment process and preparation method thereof |
| RU2764912C1 (en) * | 2021-05-25 | 2022-01-24 | Акционерное общество "Центральное конструкторское бюро морской техники "Рубин" | Method for obtaining a compound of steel with a titanium alloy by direct laser build-up |
| CN114951689A (en) * | 2022-06-16 | 2022-08-30 | 中国船舶重工集团公司第七二五研究所 | Preparation method of marine titanium alloy gradient composite material based on electric arc additive |
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