CN107931840A - A kind of titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method - Google Patents
A kind of titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method Download PDFInfo
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- CN107931840A CN107931840A CN201711176630.4A CN201711176630A CN107931840A CN 107931840 A CN107931840 A CN 107931840A CN 201711176630 A CN201711176630 A CN 201711176630A CN 107931840 A CN107931840 A CN 107931840A
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/211—Bonding by welding with interposition of special material to facilitate connection of the parts
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
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Abstract
The invention discloses a kind of titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method.This method is that two layers of composite interlayer solder is added between titanium material and nickel material, the composite interlayer solder is that first layer is niobium metal and the second layer is copper metal, niobium metal and titanium material combination interface are interface 1, niobium, the combination interface of copper metal are interface 2, copper metal and nickel material combination interface are interface 3, and welding heat source focus is located near interface 1；In welding process, the heat that welding heat source produces forms fusion welding pattern in first layer intermediate layer solder and titanium combination interface, when heat passes through first layer intermediate layer solder conduction interfaces 2 and 3, higher than the fusing point in second layer intermediate layer.The welding method avoids the formation of Ti-Ni Inter-metallic compound, can form fusing welding line at interface 1 at the same time, soldered seam be formed at interface 2 and interface 3, obtained titanium nickel dissimilar metal connector tensile strength reaches 200 230MPa, elongation percentage 2 4%.
Description
Technical field
The invention belongs to different metal materials welding procedure field, in particular to a kind of titanium nickel dissimilar welded joint laser
Induce monotectic and uniform grain Reaction Welding method.
Background technology
Titanium and its alloy are widely used due to having the characteristics that specific strength is high, corrosion-resistant energy is good, resistance to elevated temperatures is good
In fields such as aerospace, petrochemical industry and pressure vessel manufacturings, but its use is by limits such as cost of material height and poor processabilities
System, and when temperature is more than 400 DEG C, the performance of titanium alloy drastically reduces.Nickel-base alloy is due to wherein adding substantial amounts of conjunction
Gold element, therefore still can be worked normally at 1000 DEG C, high-temperature behavior is good, but its weight is higher.If by titanium and nickel
Exploitation titanium/nickel dissimilar metal component is attached, the advantage of two kinds of materials can be combined, can be met under severe conditions single
The engineering requirement that metal material cannot be fully met completely naturally, has weight for petrochemical industry, aerospace field etc.
The meaning wanted.
The existing welding method for preparing dissimilar welded joint such as patent 201410449257.5《Niti-shaped memorial alloy is closed with copper
The dissimilar material joining method and its fixture of gold》Disclose Nitinol directly to weld with copper alloy, by carrying out copper base metal
Heating, effective connection of copper alloy and memorial alloy is realized using the characteristics of copper alloy mobility, and this method needs welding
Material is heat-treated afterwards, adjusts seam organization pattern and crystallite dimension, may shape since copper can dissolve each other with other elements
Into intermetallic compound, the material mechanical performance of reduction Nitinol and copper alloy weld.
Patent 201610463909.X《A kind of stainless steel-titanium alloy dissimilar metal method for laser welding》Disclose stainless
Niobium is added between steel and titanium alloy as intermediate layer, laser facula focus is arranged on titanium alloy, accurately controls laser welding
Technological parameter, realizes the welding of different metal materials.This method make use of niobium using melting welding+contact reaction brazing mode
Conduction of heat, simultaneously because the heat conductivility of titanium alloy and stainless steel is not much different, so in titanium alloy and niobium contact surface
At the same time, the temperature of niobium and stainless steel contact surface is higher than niobium, the eutectic temperature of iron, but this method is suitable only for heat conductivility for fusing
Two kinds of materials being not much different, in the case of both heat conductivilitys difference is great, can cause material and Nb that heat conductivility is low
When contact surface melts, heat is transmitted to Nb and the high material interface of heat conductivility by Nb, since heat is quickly passed
It is delivered to material in itself, the temperature of contact interface does not reach more than eutectic temperature point, and then causes solder and the high material of heat conductivility
Material can not be welded successfully.Patent 201710414617.1《A kind of titanium copper dissimilar metal connector welding method》Disclose titanium copper it
Between heat intermediate layer niobium metal, obtained dissimilar welded joint intensity reaches more than 200MPa, and elongation percentage reaches more than 30%.
But since titanium and nickel are in thermophysical property sides such as chemical composition, fusing point, thermal conductivity, linear expansion coefficient, specific heat capacities
Face significant difference, and easily form Ti in welding2Ni、TiNi3Deng intermetallic compound, cause to form crackle in welding point
Generation brittle fracture, and nickel metal and copper metal and other metal phases ratio, property is different, therefore inventor is according to disclosed above
Method, which uses, such as uses niobium to be welded for intermediate layer, is found that while weld to together, but its intensity only less than
150MPa, elongation percentage 1.5%, plastic property of weld bead is poor.
The content of the invention
In view of the prior art existing deficiency when applied to titanium nickel dissimilar metal weld, it is an object of the invention to
It will not form any intermetallic compound when a kind of welding of titanium nickel dissimilar welded joint is provided, and strength of welded joint and the high weldering of plasticity
Connect method.
In order to realize the above-mentioned purpose of the present invention, by a large number of experiments research and unremitting effort, following skill is finally obtained
Art scheme：
A kind of titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method, add between titanium material and nickel material
Two layers of composite interlayer solder, the composite interlayer solder are that first layer is niobium metal and the second layer is copper metal, niobium metal
It is interface 1 with titanium material combination interface, niobium, the combination interface of copper metal are interface 2, and copper metal and nickel material combination interface are boundary
Face 3, welding heat source focus are located near interface 1；In welding process, the heat that welding heat source produces is in first layer intermediate layer solder
Fusion welding pattern is formed with titanium combination interface, when heat passes through first layer intermediate layer solder conduction interfaces 2 and 3, higher than the second layer
The fusing point in intermediate layer.
Specifically, titanium nickel dissimilar welded joint induced with laser monotectic of the present invention and uniform grain Reaction Welding method, include the following steps：
A intermediate layers solder determines：Niobium+copper is added between titanium material and nickel material contact interface to weld as composite interlayer
Material, ensures that gap is not stayed at interface 1, interface 2 and interface 3, and niobium intermediate layer solder thickness is 0.8~1.0mm, copper intermediate layer solder
Thickness is 30~50 μm；
B heat source positions determine：Using laser welding mode, laser heat source center is placed in Ti/Nb interfaces ± 0.2mm；
C thermal outputs control：Control the heat of laser heat source center output so that titanium mother metal and the fusing of niobium metal part, make
There are certain thickness unfused metal niobium between interface 1 and interface 2, when heat is transmitted to interface 2 and 3, its temperature produced
Degree finally forms fusing welding line at interface 1, soldered seam is formed at interface 2 and 3 higher than the fusing point of copper metal.
When carrying out c thermal output rate-determining steps, inert gas shielding is carried out to fusion zone and heat affected area.
Further, Nb intermediate layers solder is pure Nb welding wires.
Titanium nickel dissimilar welded joint induced with laser monotectic as described above and uniform grain Reaction Welding method, parameter in the laser welding
Control and be：1.5~1.7kW of laser peak power, 10~20ms of pulse width, 40~50Hz of pulse frequency, speed of welding 600~
1200mm/min, 0~1mm of defocusing amount, shield gas flow rate are front 15~20L/min, 8~13L/min of the back side.
Heretofore described titanium material is pure titanium or titanium alloy, and the nickel material is nickel-base alloy, such as inconel718
Nickel-base alloy.
The present invention has the following technical effect that relative to the prior art：
The method of the present invention is based on titanium and niobium infinitely dissolve, and simultaneously monotectic reaction occurs for niobium and copper limited solid solution, and copper is unlimited with Nb
It is dissolved and uniform grain reaction occurs and is formed without intermetallic compound, by accurately controls intermediate layer thickness, sweating heat output parameter
And position of the source center on titanium/niobium interface so that between two titanium-niobium, copper-niobium weld seams there are it is certain thickness not
Molten metal niobium, unfused metal Nb layers prevent titanium and copper phase counterdiffusion, and the presence of layers of copper inhibits niobium and nickel gold
The formation of compound between category, therefore the formation without any intermetallic compound in connector is welded, make titanium nickel dissimilar welded joint that there is height
Intensity and high-ductility；
By a welding, while formed and include titanium-niobium and three copper-niobium, copper-nickel weld seams, weld interface associativity is high；
The titanium copper dissimilar welded joint being prepared has good mechanical property, and tensile strength reaches 200-230MPa, and elongation percentage reaches 2-
4%；
Pure Nb and fine copper have the characteristics that intensity is relatively low, plasticity is good, have as composite interlayer form as packing material
Beneficial to Automation of Welding is realized, production efficiency is improved.
Brief description of the drawings
Fig. 1 induces monotectic reaction for Ti/Ni dissimilar welded joints pulse laser welding of the present invention and welds schematic top plan view；
Fig. 2 induces monotectic reaction for Ti/Ni dissimilar welded joints pulse laser welding of the present invention and welds schematic side view；
Fig. 3 is the Ti/Ni dissimilar metal pulsed laser welding connectors that the method for the present invention is prepared；
Fig. 4 is cross-sectional morphology and the boundary that Ti/Ni dissimilar metal pulsed laser welding connectors are prepared in the method for the present invention
Face microstructure；
Fig. 5 is the stress strain curve that Ti/Ni dissimilar metal pulsed laser welding connectors are prepared in the method for the present invention
Fig. 6 is the heterogeneous pulsed laser welding bond pull fracture sample figure of Ti/Ni metals that the present invention obtains；
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings, but protection scope of the present invention is not only
It is only limitted to following embodiments.
Embodiment 1
Titanium nickel dissimilar welded joint in order to obtain, pulsed laser welding is carried out to TC4 Type Titanium Alloys and Inconel 718, wherein
TC4 Type Titanium Alloys plate is identical with 718 board size specifications of Inconel, is 100mm (length) × 50mm (width) × 1.0mm (thickness), will
Niobium and Cu intermediate layers solder are placed between 718 test plate (panel) interface of TC4 Type Titanium Alloys plate and Inconel, ensure Ti/Nb, Nb/Cu and Cu/
The each interface Jian Buliu gaps in Ni interfaces, wherein niobium intermediate layer bead width are 1.0mm, and Cu intermediate layers bead width is 50 μm,
Pulsed laser spot is placed in distance Ti/Nb interfaces, pulsed laser welding, such as Fig. 1 are carried out under two-sided argon atmosphere
Shown in Fig. 2, fusing control is not melted in Ti/Nb near interfaces region, the Nb paper tinsels close to Cu sides, by hot from molten bath
The temperature that the heat that conduction provides produces Nb/Cu and Cu/Ni is respectively higher than the fusing point of Cu so that Ti/Nb interfaces are fusion welding
Connection, Nb/Cu interfaces and Cu/Ni interfaces are soldering connection.Wherein pulsed laser welding technological parameter is：Laser peak power
1.5kW, pulse width 15ms, pulse frequency 50Hz, speed of welding 1200mm/min, defocusing amount 1mm, in two-sided protective atmosphere,
Front protecting throughput 20L/min, back-protective throughput 13L/min.
The titanium nickel dissimilar welded joint finally obtained is as shown in figure 3, the microstructure that the weld of butt joint carries out cross section is seen
Examine to obtain microscopic appearance as shown in Figure 4, titanium mother metal is melted with niobium mid layer section, forms fusing welding line；Cu/Nb and CuNi circle
Face temperature is higher than the fusing point (1084 DEG C) of copper, and monotectic reaction occurs with Nb and Ni for copper fusing and uniform grain reacts, and forms with inclined
The soldered fitting of brilliant reaction+uniform grain response feature；In welding process, begin between titanium niobium melts soldered seam and Nb copper melts solder joint
It is Nb layers unfused there are certain thickness eventually, and layers of copper exists in Cu/Nb and Cu/Ni interfaces.
As seen from Figure 4, exist in the microstructure of weld without any intermetallic compound.
To obtained titanium nickel dissimilar welded joint according to GB/T 228-2002《Metal material tensile testing at ambient temperature》Carry out power
Extension test is learned, connector tensile strength is as shown in Figure 5 after 230MPa, elongation after fracture 4.0%, and connector are broken.
Embodiment 2
Titanium nickel dissimilar welded joint in order to obtain, to TC4 Type Titanium Alloys with carrying out pulsed laser welding with Inconel 718, its
Middle TC4 Type Titanium Alloys plate is identical with 718 board size specifications of Inconel, is 100mm (length) × 50mm (width) × 1.0mm
(thickness), between niobium and copper intermediate layer solder are placed in 718 board interface of TC4 Type Titanium Alloys plate and Inconel, ensures Ti/Nb, Nb/Cu
And each interface Jian Buliu gaps in Cu/Ni interfaces, niobium intermediate layer bead width are 0.8mm, 30 μm of Cu intermediate layers solder thickness will
Pulsed laser spot is placed in distance Ti/Nb interfaces at the 0.2mm of Ti sides, and pulse laser welding is carried out under two-sided argon atmosphere
Connect, pulsed laser welding technological parameter is：Laser peak power 1.7kW, pulse width 20ms, pulse frequency 40Hz, welding speed
Spend 600mm/min, defocusing amount 0mm, in two-sided protective atmosphere, front protecting throughput 15L/min, back-protective throughput 13L/
min。
Microexamination is carried out to obtained titanium nickel dissimilar welded joint, micrograph identical as shown in Example 1 can be obtained
Picture.
The mechanical stretch carried out as described in Example 1 to obtained titanium nickel dissimilar welded joint is tested, its connector tensile strength is
200MPa, elongation percentage 2%.
Embodiment 3
Titanium nickel dissimilar welded joint in order to obtain, pulsed laser welding is carried out to TC4 Type Titanium Alloys and Inconel 718, wherein
TC4 Type Titanium Alloys plate is identical with 718 board size specifications of Inconel, is 100mm (length) × 50mm (width) × 1.0mm (thickness),
Niobium and copper intermediate layer solder are placed in TC4 Type Titanium Alloys plate and between 718 board interfaces of Inconel, ensure Ti/Nb, Nb/Cu and
The each interface Jian Buliu gaps in Cu/Ni interfaces, niobium intermediate layer bead width are 0.9mm, 40 μm of Cu intermediate layers solder thickness, by arteries and veins
Rush laser facula and be placed in distance Ti/Nb interfaces at the 0.2mm of Nb sides, pulse laser welding is carried out under two-sided argon atmosphere
Connect, pulsed laser welding technological parameter is：Laser peak power 1.6kW, pulse width 15ms, pulse frequency 50Hz, welding speed
800mm/min, defocusing amount 0.3mm are spent, in two-sided protective atmosphere, front protecting throughput 18L/min, back-protective throughput
10L/min。
Microexamination is carried out to obtained titanium nickel dissimilar welded joint, micrograph identical as shown in Example 1 can be obtained
Picture.
The mechanical stretch carried out as described in Example 1 to obtained titanium nickel dissimilar welded joint is tested, its connector tensile strength is
200MPa, elongation percentage 2.5%.
Comparative example 1
Choose TC4 Type Titanium Alloys plate with 718 plates of Inconel, both dimensions are identical, all for 100mm (length) ×
50mm (width) × 1.0mm (thickness), the heterogeneous direct contact weld of pulse laser, pulse laser are carried out to TC4 Type Titanium Alloys and pure Cu
Hot spot is located at Ti/ with 718 interfaces of Inconel, pulsed laser welding, pulse laser welding are carried out under two-sided argon atmosphere
Connecing technological parameter is：Laser peak power 1.5kW, pulse width 15ms, pulse frequency 40Hz, speed of welding 600mm/min, from
Jiao amount 0mm, in two-sided protective atmosphere, front protecting throughput 18L/min, back-protective throughput 10L/min.
It turns out that titanium alloy easily generates substantial amounts of intermetallic compound with Inconel718, after welding, connect
Head weld, that is, be broken.
Comparative example 2
Other parameters and processing step are identical with embodiment 1, and Nb+Cu intermediate layers therein composite bed is replaced with Nb
Interbed, intermediate layer thickness is constant, and niobium intermediate layer bead width is 1.0mm, it turns out that although being welded with Inconel 718 and Nb
Border face, which does not occur not prison welding, to be leaned on realizes effective combination with rosin joint situation, Inconel 718 and Nb, but in weld seam still
There is the formation of Nb-Ni intermetallic compounds, the intensity of connector is 145MPa, elongation percentage 1.5%, and the plasticity of weld seam is poor.
Comparative example 3
Other parameters and processing step are identical with embodiment 1, and Nb+Cu intermediate layers therein composite bed is replaced with Nb+V
Intermediate layer, intermediate layer thickness is constant, and niobium intermediate layer bead width is 1.0mm, and V intermediate layers bead width is 50 μm, it turns out that
Although showing effective combination with Inconel 718 and V weld interfaces, there are Nb-Vi intermetallic compounds in weld seam
Formed, limit the raising of weld integrity energy, the intensity of its connector is 158MPa, and elongation percentage 1.4%, joint performance is poor.
Comparative example 4
Other parameters and processing step are identical with embodiment 1, and Nb+Cu intermediate layers therein composite bed is replaced with V+Cu
Intermediate layer, intermediate layer thickness is constant, and V intermediate layers bead width is 1.0mm, and Cu intermediate layers bead width is 50 μm, due to leading for V
It is hot low compared with Nb, it is necessary to the heat input of higher, therefore effective combination is not implemented in Inconel 718 and Cu.
Comparative example 5
Other parameters and processing step are identical with embodiment 1, and Nb+Cu intermediate layers therein composite bed is replaced with Cu2V
Alloy interlayer, intermediate layer thickness is constant, Cu2V intermediate layers bead width is 1.0mm, and Cu intermediate layers bead width is 50 μm, knot
Fruit is found due to foring Ti there are more Ti-Ni-Cu ternary phases, and in titanium side in weld seam2Cu compound layers, cause to connect
The mechanical property of head is poor, its tensile strength is only 179MPa.
Carried out by above-described embodiment with two kinds of hot physical property of titanium and nickel are differed great metal material it can be seen from comparative example
Welding, when both directly weld, there are the phenomenon that connector is directly broken；When adding the high Nb intermediate solders of heat-conductive characteristic,
Although connector has certain intensity, there is the generation of Nb-Ni intermetallic compounds in weld seam.And in using Nb+Cu compound
During interbed, the generation without any intermetallic compound in weld seam, the plasticity of weld seam is obviously improved.
Claims (6)
1. a kind of titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method, it is characterised in that：In titanium material and nickel
Storeroom adds two layers of composite interlayer solder, and the composite interlayer solder is that first layer is niobium metal and the second layer is copper gold
Belong to, niobium metal is interface 1 with titanium material combination interface, and niobium, the combination interface of copper metal are interface 2, copper metal and nickel material knot
Conjunction interface is interface 3, and welding heat source focus is located near interface 1；In welding process, the heat that welding heat source produces is in first layer
Intermediate layer solder forms fusion welding pattern with titanium combination interface, when heat passes through first layer intermediate layer solder conduction interfaces 2 and 3,
Higher than the fusing point in second layer intermediate layer.
2. titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method according to claim 1, it is characterised in that
Include the following steps：
A intermediate layers solder determines：Niobium+copper is added between titanium material and nickel material contact interface as composite interlayer solder,
Ensure that gap is not stayed at interface 1, interface 2 and interface 3, niobium intermediate layer solder thickness is 0.8~1.0mm, and copper intermediate layer solder is thick
Spend for 30~50 μm；
B heat source positions determine：Using laser welding mode, laser heat source center is placed in Ti/Nb interfaces ± 0.2mm；
C thermal outputs control：Control the heat of laser heat source center output so that titanium mother metal and the fusing of niobium metal part, make interface 1
There are certain thickness unfused metal niobium between interface 2, when heat is transmitted to interface 2 and 3, its temperature produced is higher than
The fusing point of copper metal, finally forms fusing welding line at interface 1, soldered seam is formed at interface 2 and 3.
3. titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method according to claim 2, it is characterised in that：
Nb the and Cu composite interlayers solder is pure Nb welding wires and fine copper welding wire.
4. titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method according to claim 2, it is characterised in that：
When carrying out c thermal output rate-determining steps, inert gas shielding is carried out to fusion zone and heat affected area.
5. titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method according to claim 2, it is characterised in that：
State modulator is in the laser welding：1.5~1.7kW of laser peak power, 10~20ms of pulse width, pulse frequency 40~
50Hz, 600~1200mm/min of speed of welding, 0~1mm of defocusing amount, shield gas flow rate are 15~20L/min of front, the back side 8
~13L/min.
6. titanium nickel dissimilar welded joint induced with laser monotectic and uniform grain Reaction Welding method according to claim 2, it is characterised in that：
The titanium material is pure titanium or titanium alloy, and the nickel material is nickel-base alloy.
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| CN109570762A (en) * | 2018-12-29 | 2019-04-05 | 宝鸡文理学院 | A kind of niti-shaped memorial alloy and the connection method of stainless steel dissimilar welded joint |
| CN109570765A (en) * | 2019-01-04 | 2019-04-05 | 沈阳工业大学 | A kind of manufacturing method that titanium alloy is connect with nickel base superalloy laser gain material |
| CN110421261A (en) * | 2019-08-21 | 2019-11-08 | 新疆大学 | Add titanium alloy-stainless steel dissimilar metal laser welding method of composite interlayer |
| CN111230114A (en) * | 2020-02-28 | 2020-06-05 | 沈阳工业大学 | Laser additive manufacturing method of TC4/IN625 functional gradient composite material |
| CN112475318A (en) * | 2020-11-26 | 2021-03-12 | 华中科技大学 | 4D printing method for nickel-titanium alloy and titanium alloy multi-material |
| CN113042876A (en) * | 2021-04-01 | 2021-06-29 | 东北大学秦皇岛分校 | Friction stir material increase manufacturing method with preset heterogeneous metal interlayer |
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| CN109570762A (en) * | 2018-12-29 | 2019-04-05 | 宝鸡文理学院 | A kind of niti-shaped memorial alloy and the connection method of stainless steel dissimilar welded joint |
| CN109570765A (en) * | 2019-01-04 | 2019-04-05 | 沈阳工业大学 | A kind of manufacturing method that titanium alloy is connect with nickel base superalloy laser gain material |
| CN109570765B (en) * | 2019-01-04 | 2020-12-18 | 沈阳工业大学 | Manufacturing method for laser material increase connection of titanium alloy and nickel-based superalloy |
| CN110421261A (en) * | 2019-08-21 | 2019-11-08 | 新疆大学 | Add titanium alloy-stainless steel dissimilar metal laser welding method of composite interlayer |
| CN110421261B (en) * | 2019-08-21 | 2021-09-28 | 新疆大学 | Laser welding method for titanium alloy-stainless steel dissimilar metal added with composite intermediate layer |
| CN111230114A (en) * | 2020-02-28 | 2020-06-05 | 沈阳工业大学 | Laser additive manufacturing method of TC4/IN625 functional gradient composite material |
| CN112475318A (en) * | 2020-11-26 | 2021-03-12 | 华中科技大学 | 4D printing method for nickel-titanium alloy and titanium alloy multi-material |
| CN113042876A (en) * | 2021-04-01 | 2021-06-29 | 东北大学秦皇岛分校 | Friction stir material increase manufacturing method with preset heterogeneous metal interlayer |
| CN113042876B (en) * | 2021-04-01 | 2023-04-21 | 东北大学秦皇岛分校 | Friction stir additive manufacturing method for presetting heterogeneous metal interlayer |
| CN115229194A (en) * | 2022-09-22 | 2022-10-25 | 太原理工大学 | Method for realizing connection of titanium steel medium plate by high-speed laser cladding additive CuNi alloy |
| CN115229194B (en) * | 2022-09-22 | 2023-01-03 | 太原理工大学 | Method for realizing connection of titanium steel medium plate by high-speed laser cladding additive CuNi alloy |
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