CN113492296A - Preparation method of aluminum bronze/titanium alloy bimetal - Google Patents
Preparation method of aluminum bronze/titanium alloy bimetal Download PDFInfo
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- CN113492296A CN113492296A CN202110691735.3A CN202110691735A CN113492296A CN 113492296 A CN113492296 A CN 113492296A CN 202110691735 A CN202110691735 A CN 202110691735A CN 113492296 A CN113492296 A CN 113492296A
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 83
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 73
- 229910000906 Bronze Inorganic materials 0.000 title claims abstract description 70
- 239000010974 bronze Substances 0.000 title claims abstract description 70
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000007731 hot pressing Methods 0.000 claims abstract description 45
- 239000000956 alloy Substances 0.000 claims abstract description 40
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 38
- 239000011888 foil Substances 0.000 claims abstract description 38
- 229910052709 silver Inorganic materials 0.000 claims abstract description 38
- 239000004332 silver Substances 0.000 claims abstract description 38
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000007704 transition Effects 0.000 claims abstract description 37
- 238000005245 sintering Methods 0.000 claims abstract description 28
- 238000002844 melting Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 238000005554 pickling Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 5
- 238000007781 pre-processing Methods 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 10
- 239000013585 weight reducing agent Substances 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 229910017604 nitric acid Inorganic materials 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
- B23K20/026—Thermo-compression bonding with diffusion of soldering material
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a preparation method of aluminum bronze/titanium alloy bimetal, which is characterized in that aluminum bronze and titanium alloy are processed into cylinders, and a silver-based alloy foil material of an intermediate transition layer is reserved; pretreating aluminum bronze, titanium alloy and silver-based alloy foil of the intermediate transition layer; sequentially placing the pretreated titanium alloy, the silver-based alloy foil of the intermediate transition layer and the aluminum bronze into a hot pressing die, and placing the hot pressing die into a vacuum hot pressing sintering furnace for vacuum area micro-melting interface connection to obtain an aluminum bronze/titanium alloy bimetallic sample; the bimetal formed by the invention not only integrates the superior performances of copper alloy and titanium alloy, but also has good interface combination and higher shear strength. The bimetal material disclosed by the invention can be used as a wear-resistant part in hydraulic actuating systems of airplanes, high-speed rails, light automobiles and the like and plunger pumps, and meets the severe requirements of weight reduction and lead-free equipment.
Description
Technical Field
The invention belongs to the technical field of bimetal preparation, and particularly relates to a preparation method of an aluminum bronze/titanium alloy bimetal.
Background
The connection of the dissimilar materials can exert the respective performances of the materials to the maximum extent, is one of the leading edges and hot spots in the current material connection field, and is widely applied to the industrial production and manufacturing of electronics, machinery, aerospace, intelligent manufacturing, nuclear facilities and the like. In recent years, studies on dissimilar metal connections mainly include titanium/steel, aluminum/copper, magnesium/aluminum, aluminum/iron, and the like, and in terms of copper/titanium bimetal, studies on pure copper pure titanium metal connections are more conducted, but studies on copper alloy/titanium alloy connections are less conducted. The combination mode of the heterogeneous metals comprises mechanical assembly, metallurgical combination and the like, and the common metallurgical combination connection method of the copper/titanium bimetal mainly comprises fusion brazing, solid phase welding and transition layer addition. To completely inhibit TixCuyThe formation of intermetallic compounds, physically isolating the interdiffusion of Ti and Cu, is the ideal approach, so adding a transition layer with high melting point and without intermetallic compounds with Ti and Cu is the trend of copper/titanium dissimilar metal bonding. However, the transition layer added in the copper alloy/titanium alloy dissimilar metal connection does not effectively inhibit atomic diffusion, a considerable amount of lamellar intermetallic compounds are generated, and the connection strength is generally low. Therefore, a new intermediate transition layer is needed to be provided, the copper alloy/titanium alloy bimetal material is prepared by an improved process, the interface structure of the bimetal material is improved, the bimetal material is lightened and has high strength, and the bimetal material is applied to the high-end fields of aerospace, military equipment and the like.
Disclosure of Invention
The invention aims to provide a preparation method of an aluminum bronze/titanium alloy bimetal, which solves the defects that the existing copper alloy/titanium alloy bimetal is low in bonding strength and easy to crack at an interface connection part.
The invention adopts the technical scheme that the preparation method of the aluminum bronze/titanium alloy bimetal is implemented according to the following steps:
step 1, processing aluminum bronze and titanium alloy into a cylinder, and reserving an intermediate transition layer silver-based alloy foil for later use;
step 2, preprocessing the aluminum bronze, the titanium alloy and the silver-based alloy foil of the intermediate transition layer;
and 3, sequentially placing the titanium alloy pretreated in the step 2, the silver-based alloy foil of the intermediate transition layer and the aluminum bronze into a hot pressing die, and placing the hot pressing die into a vacuum hot pressing sintering furnace for vacuum area micro-melting interface connection to obtain the aluminum bronze/titanium alloy bimetallic sample.
The invention is also characterized in that:
wherein the aluminum bronze cylinder and the titanium alloy cylinder processed in the step 1 both have the outer diameter of 20mm and the height of 20mm, and the silver-based alloy foil of the intermediate transition layer has the diameter of 20 mm;
polishing the surfaces of the aluminum bronze and the titanium alloy in the step 2, pickling the aluminum bronze, the titanium alloy and the silver-based alloy foil of the intermediate transition layer, and cleaning after pickling;
the specific process of pickling in the step 2 is to soak the aluminum bronze, the titanium alloy and the silver-based alloy foil of the intermediate transition layer in 10 percent nitric acid alcohol solution for pickling, and the cleaning process adopts alcohol for cleaning;
the vacuum area micro-melting interface connection process in the step 3 specifically comprises the following steps: firstly, the vacuum degree in the vacuum hot-pressing sintering furnace is adjusted to 6.67 multiplied by 10-3Pa～6.67×10-2Pa, heating for 50-60 min, keeping the temperature for 30-60 min after heating to 790-910 ℃, and finally cooling along with the furnace to obtain aluminum bronze/titanium alloy bimetal;
wherein, 1-10 MPa of pressure is respectively applied to the furnace in the heat preservation and cooling processes or 1-10 MPa of pressure is applied to the furnace only in the heat preservation process.
The invention has the beneficial effects that:
the invention provides a new selection idea of an intermediate transition layer-silver-based alloy foil for the connection of a copper alloy/titanium alloy material system, and the intermediate transition layer silver-based alloy foil with specific components is beneficial to the interface connection of copper alloy and titanium alloy, improves the interface organization structure, enables the interface to be well combined, and can improve the fluidity of cadmium. Meanwhile, at a higher temperature, the copper alloy is softened, zone micro-melting occurs, the copper alloy and the titanium alloy are subjected to high-temperature diffusion combination under the action of pressure, and the generation of cracks is effectively inhibited when the pressure is applied for different time periods. The formed bimetal has the respective excellent performances of copper alloy and titanium alloy, and also has good interface combination, and the maximum interface shear strength can reach 159 MPa.
Drawings
FIG. 1 is a graph of the interface morphology of an aluminum bronze/titanium alloy bimetal in an embodiment 3 of the method for preparing an aluminum bronze/titanium alloy bimetal of the present invention;
FIG. 2 is a graph showing the interface morphology of an aluminum bronze/titanium alloy bimetal in embodiment 4 of the method for preparing an aluminum bronze/titanium alloy bimetal of the present invention;
FIG. 3 is a schematic view of a shear strength curve of an aluminum bronze/titanium alloy bimetal in the method for preparing an aluminum bronze/titanium alloy bimetal according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention provides a preparation method of aluminum bronze/titanium alloy bimetal, which comprises the following steps:
step 1, processing aluminum bronze and titanium alloy into a cylinder, and preparing an intermediate transition layer silver-based alloy foil; the outer diameter of the cylindrical aluminum bronze and the cylindrical titanium alloy are both 20mm, the height of the cylindrical aluminum bronze and the cylindrical titanium alloy is 20mm, and the diameter of the silver-based alloy foil of the intermediate transition layer is 20mm and is the same as that of the base metal alloy;
step 2, pretreating the aluminum bronze and the titanium alloy, namely polishing the surfaces of the aluminum bronze and the titanium alloy, and carrying out acid washing together with the intermediate transition layer, wherein the acid washing comprises the following specific processes: soaking the aluminum bronze, the titanium alloy and the intermediate transition layer in a 10% nitric acid alcohol solution for acid washing, then cleaning by using alcohol, and obtaining the pretreated aluminum bronze, the titanium alloy and the intermediate transition layer after cleaning;
step 3, sequentially placing the pretreated titanium alloy, the intermediate transition layer and the aluminum bronze obtained in the step 2 into a hot pressing mold, and placing the hot pressing mold into a vacuum hot pressing sintering furnace for vacuum area micro-melting interface connection to obtain an aluminum bronze/titanium alloy bimetallic sample;
the vacuum area micro-melting interface connection process specifically comprises the following steps: the vacuum degree of the vacuum hot-pressing sintering furnace reaches 6.67 multiplied by 10- 3Pa～6.67×10-2Heating after Pa, wherein the sintering time is 50-60 min, keeping the temperature for 30-60 min after the heating temperature reaches 790-910 ℃, and applying 1-10 MPa pressure to the material in the heat preservation and cooling processes and only in the heat preservation process respectively, namely two pressurizing modes, namely a pressurizing mode: pressurizing in the processes of heat preservation and temperature reduction respectively; and (2) a second pressurizing mode: pressurizing only in the heat preservation process; and cooling along with the furnace to obtain the aluminum bronze/titanium alloy bimetal.
Example 1
Preparing aluminum bronze/titanium alloy bimetal, processing aluminum bronze (QAl 10-4-4) with the mark of QAl10-4-4 and TC6 titanium alloy into a cylinder with phi 20mm multiplied by 20mm, and preparing a silver-based alloy foil 1 of an intermediate transition layer with phi 20 mm; polishing the surfaces of QAL10-4-4 and TC6, soaking the surfaces of QAL10-4-4 and TC6 and silver-based alloy foil 1 in 10% nitric acid alcohol for pickling, cleaning with alcohol, and storing for later use;
sequentially matching and placing the pretreated TC6, the silver-based alloy foil 1 and the QAl10-4-4 into a hot-pressing die, then placing the hot-pressing die into a vacuum hot-pressing sintering furnace, pumping the vacuum hot-pressing sintering furnace to high vacuum in order to prevent the interface joint from being oxidized, and when the vacuum degree in the vacuum hot-pressing sintering furnace reaches 7.60 multiplied by 10-3And (3) heating after Pa, sintering for 51min, keeping the temperature for 30min after the heating temperature reaches 790 ℃, only applying pressure of 5MPa to the hot-pressing die in the heat preservation process, and stopping pressurizing and heating after the aluminum bronze/titanium alloy finishes the micro-melting interface connection in the vacuum area, so that the aluminum bronze/titanium alloy is cooled along with the furnace to obtain the aluminum bronze/titanium alloy bimetal. The mechanical property detection shows that the interface shear strength is 71MPa as shown in figure 3.
Example 2
Preparing aluminum bronze/titanium alloy bimetal, processing QAL10-4-4 and TC6 into a cylinder with phi 20mm multiplied by 20mm, and preparing a silver-based alloy foil 1 of a middle transition layer with phi 20 mm; polishing the surfaces of QAL10-4-4 and TC6, soaking the surfaces of QAL10-4-4 and TC6 and silver-based alloy foil 1 in 10% nitric acid alcohol for pickling, cleaning with alcohol, and storing for later use;
sequentially matching and placing the pretreated TC6, the silver-based alloy foil 1 and the QAl10-4-4 into a hot-pressing die, then placing the hot-pressing die into a vacuum hot-pressing sintering furnace, pumping the vacuum hot-pressing sintering furnace to high vacuum in order to prevent the interface joint from being oxidized, and when the vacuum degree in the vacuum hot-pressing sintering furnace reaches 6.60 multiplied by 10-3And (3) heating after Pa, sintering for 53min, keeping the temperature for 30min after the heating temperature reaches 820 ℃, applying pressure of 5MPa to the hot-pressing die only in the heat preservation process, stopping pressurizing and heating after the aluminum bronze/titanium alloy finishes the micro-melting interface connection in the vacuum area, and cooling along with the furnace to obtain the aluminum bronze/titanium alloy bimetal. Through mechanical property detection, as shown in fig. 3, the interface shear strength is 94 MPa.
Example 3
Preparing aluminum bronze/titanium alloy bimetal, processing QAL10-4-4 and TC6 into a cylinder with phi 20mm multiplied by 20mm, and preparing a silver-based alloy foil 1 of a middle transition layer with phi 20 mm; polishing the surfaces of QAL10-4-4 and TC6, soaking the surfaces of QAL10-4-4 and TC6 and silver-based alloy foil 1 in 10% nitric acid alcohol for pickling, cleaning with alcohol, and storing for later use;
sequentially matching and placing the pretreated TC6, the silver-based alloy foil 1 and the QAl10-4-4 into a hot-pressing die, then placing the hot-pressing die into a vacuum hot-pressing sintering furnace, pumping the vacuum hot-pressing sintering furnace to high vacuum in order to prevent the interface joint from being oxidized, and when the vacuum degree in the vacuum hot-pressing sintering furnace reaches 6.70 multiplied by 10-3And (3) heating after Pa, sintering for 55min, keeping the temperature for 30min after the heating temperature reaches 850 ℃, applying pressure of 5MPa to the hot-pressing die only in the heat preservation process, stopping pressurizing and heating after the aluminum bronze/titanium alloy finishes the micro-melting interface connection in the vacuum area, and cooling along with the furnace to obtain the aluminum bronze/titanium alloy bimetal. Through the structure observation of the metallographic specimen, the interface of the metallographic specimen has a transition layer, but the metallographic specimen has more cracks and poor combination, as shown in fig. 1; through mechanical property detection, as shown in fig. 3, the interface shear strength is 26 MPa.
Example 4
Preparing aluminum bronze/titanium alloy bimetal, processing QAL10-4-4 and TC6 into a cylinder with phi 20mm multiplied by 20mm, and preparing a silver-based alloy foil 1 of a middle transition layer with phi 20 mm; polishing the surfaces of QAL10-4-4 and TC6, soaking the surfaces of QAL10-4-4 and TC6 and silver-based alloy foil 1 in 10% nitric acid alcohol for pickling, cleaning with alcohol, and storing for later use;
sequentially matching and placing the pretreated TC6, the silver-based alloy foil 1 and the QAl10-4-4 into a hot-pressing die, then placing the hot-pressing die into a vacuum hot-pressing sintering furnace, pumping the vacuum hot-pressing sintering furnace to high vacuum in order to prevent the interface joint from being oxidized, and when the vacuum degree in the vacuum hot-pressing sintering furnace reaches 6.90 multiplied by 10-3And (3) heating after Pa, sintering for 55min, keeping the temperature for 30min after the heating temperature reaches 850 ℃, simultaneously applying pressure of 5MPa, cooling the aluminum bronze/titanium alloy bimetal along with the furnace after the heating and heat preservation processes are finished, and continuously applying pressure of 5MPa to a hot-pressing die in the temperature reduction process to obtain the aluminum bronze/titanium alloy bimetal, wherein the aluminum bronze/titanium alloy bimetal has the advantages of good interface combination, no crack and high connection strength by observing the structure of a metallographic sample, as shown in figure 2. Through mechanical property detection, as shown in fig. 3, the interface shear strength can reach 159 MPa.
Example 5
Preparing aluminum bronze/titanium alloy bimetal, processing QAl10-4-4 and TC6 into a cylinder with phi 20mm multiplied by 20mm, and preparing a silver-based alloy foil 2 of a middle transition layer with phi 20 mm; polishing the surfaces of QAL10-4-4 and TC6, soaking the surfaces together with the silver-based alloy foil 2 in 10% nitric acid alcohol for pickling, cleaning the surfaces with alcohol, and storing the cleaned surfaces for later use;
sequentially matching and placing the pretreated TC6, the silver-based alloy foil 2 and the QAl10-4-4 into a hot-pressing die, then placing the hot-pressing die into a vacuum hot-pressing sintering furnace, pumping the vacuum hot-pressing sintering furnace to high vacuum in order to prevent the interface joint from being oxidized, and when the vacuum degree in the vacuum hot-pressing sintering furnace reaches 7.10 multiplied by 10-3Heating after Pa, sintering for 55min, keeping the temperature for 30min after the heating temperature reaches 790 ℃, simultaneously applying pressure of 5MPa, cooling the heated and kept temperature along with the furnace after the heating and keeping process is finished, and continuously applying pressure of 5MPa to the hot-pressing die in the cooling process to obtain the aluminum bronze/titanium alloy bimetal; the interface shear strength is 109MPa through mechanical property detection.
TABLE 1 chemical composition (mass fraction%) of the intermediate transition layer, i.e., the two silver-based alloy foils
A method for preparing aluminum bronze/titanium alloy bimetal provides a new selection idea of silver-based alloy foil as an intermediate transition layer for the connection of a copper alloy/titanium alloy material system, and the silver-based alloy foil of the intermediate transition layer with specific components is beneficial to the interface connection of copper alloy and titanium alloy, improves the interface organization structure, enables the interface to be well combined, and can improve the fluidity of cadmium. Meanwhile, at a higher temperature, the copper alloy is softened, zone micro-melting occurs, the copper alloy and the titanium alloy are subjected to high-temperature diffusion combination under the action of pressure, and the generation of cracks is effectively inhibited when the pressure is applied for different time periods. The formed bimetal has the respective excellent performances of copper alloy and titanium alloy, and also has good interface combination and higher interface shear strength.
Claims (6)
1. The preparation method of the aluminum bronze/titanium alloy bimetal is characterized by comprising the following steps:
step 1, processing aluminum bronze and titanium alloy into a cylinder, and reserving an intermediate transition layer silver-based alloy foil for later use;
step 2, preprocessing the aluminum bronze, the titanium alloy and the silver-based alloy foil of the intermediate transition layer;
and 3, sequentially placing the titanium alloy pretreated in the step 2, the silver-based alloy foil of the intermediate transition layer and the aluminum bronze into a hot pressing die, and placing the hot pressing die into a vacuum hot pressing sintering furnace for vacuum area micro-melting interface connection to obtain the aluminum bronze/titanium alloy bimetallic sample.
2. The method for preparing the aluminum bronze/titanium alloy bimetal according to claim 1, wherein the aluminum bronze cylinder and the titanium alloy cylinder processed in the step 1 both have the outer diameter of 20mm and the height of 20mm, and the silver-based alloy foil of the intermediate transition layer has the diameter size of 20 mm.
3. The method for preparing the aluminum bronze/titanium alloy bimetal according to claim 1, wherein the aluminum bronze and the titanium alloy are subjected to surface polishing in the step 2, the aluminum bronze, the titanium alloy and the silver-based alloy foil of the intermediate transition layer are subjected to acid pickling after the surface polishing, and the aluminum bronze, the titanium alloy and the silver-based alloy foil of the intermediate transition layer are cleaned after the acid pickling.
4. The method for preparing the aluminum bronze/titanium alloy bimetal according to claim 3, wherein the pickling in the step 2 is carried out by soaking the aluminum bronze, the titanium alloy and the silver-based alloy foil of the intermediate transition layer in a 10% nitric acid-alcohol solution for pickling, and the cleaning process is carried out by using alcohol for cleaning.
5. The method for preparing the aluminum bronze/titanium alloy bimetal according to claim 1, wherein the vacuum region micro-melting interface connection process in the step 3 specifically comprises the following steps: firstly, the vacuum degree in the vacuum hot-pressing sintering furnace is adjusted to 6.67 multiplied by 10-3Pa～6.67×10-2Pa, heating for 50-60 min, heating to 790-910 ℃, preserving heat for 30-60 min, and finally cooling along with the furnace to obtain the aluminum bronze/titanium alloy bimetal.
6. The method for preparing the aluminum bronze/titanium alloy bimetal according to claim 5, wherein 1-10 MPa of pressure is respectively applied to the inside of the furnace in the heat preservation and cooling processes or 1-10 MPa of pressure is applied to the inside of the furnace only in the heat preservation process.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114540606A (en) * | 2022-03-09 | 2022-05-27 | 西部金属材料股份有限公司 | Preparation method of high-hardness titanium alloy sheet and foil |
| CN114875463A (en) * | 2022-06-27 | 2022-08-09 | 西安理工大学 | Method for electrodepositing silver layer copper alloy/titanium alloy heterogeneous bimetal connection |
| CN115106639A (en) * | 2022-06-27 | 2022-09-27 | 西安理工大学 | Method for connecting multi-bronze/two-phase titanium alloy bimetal |
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| CN114540606A (en) * | 2022-03-09 | 2022-05-27 | 西部金属材料股份有限公司 | Preparation method of high-hardness titanium alloy sheet and foil |
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| CN114875463A (en) * | 2022-06-27 | 2022-08-09 | 西安理工大学 | Method for electrodepositing silver layer copper alloy/titanium alloy heterogeneous bimetal connection |
| CN115106639A (en) * | 2022-06-27 | 2022-09-27 | 西安理工大学 | Method for connecting multi-bronze/two-phase titanium alloy bimetal |
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