CN115026275B - Iron-based amorphous particle reinforced aluminum-based composite spray powder and laser welding method thereof - Google Patents
Iron-based amorphous particle reinforced aluminum-based composite spray powder and laser welding method thereof Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 153
- 239000000843 powder Substances 0.000 title claims abstract description 109
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 69
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000002245 particle Substances 0.000 title claims abstract description 68
- 239000002131 composite material Substances 0.000 title claims abstract description 61
- 238000003466 welding Methods 0.000 title claims abstract description 61
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 58
- 239000007921 spray Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 52
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 36
- 238000005507 spraying Methods 0.000 claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000000498 ball milling Methods 0.000 claims abstract description 12
- 238000000889 atomisation Methods 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 14
- 238000004886 process control Methods 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 239000011812 mixed powder Substances 0.000 claims description 12
- 235000021355 Stearic acid Nutrition 0.000 claims description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 8
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 8
- 239000008117 stearic acid Substances 0.000 claims description 8
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 16
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/09—Mixtures of metallic powders
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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
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major constituent
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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
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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- 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 relates to an iron-based amorphous particle reinforced aluminum-based composite spray powder and a laser welding method thereof, belonging to the field of laser welding. The reinforcing phase of the iron-based amorphous particle reinforced aluminum-based composite spray powder is Fe 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy, the matrix is 4 series aluminum alloy; in mass percent, reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 The amorphous alloy accounts for 5 to 20 percent. The invention prepares Fe by an air atomization method 48 Cr 28 Mo 20 C 2 P 2 And mixing the amorphous powder with aluminum alloy powder, ball milling the mixture into powder, and then performing laser powder spraying welding to realize the connection of the 4-series aluminum alloy plates. According to the invention, pores and cracks are effectively controlled by changing the powder material filled in the welding process, the welding deformation is reduced, and the amorphous particle reinforced aluminum matrix composite material is well combined after welding and has excellent performance.
Description
Technical Field
The invention relates to an iron-based amorphous particle reinforced aluminum-based composite spray powder and a laser welding method thereof, belonging to the field of laser welding.
Background
The aluminum alloy has excellent properties such as corrosion resistance, high specific strength and the like due to the processability, and is widely applied to the fields of aerospace, rail transit, automobiles and the like. The molding technology for aluminum alloy as a structural member has become an important point of attention for many scholars and researchers. The aluminum alloy has high heat conductivity, so that a heat affected zone is wide, the high-temperature aluminum alloy has low strength and good fluidity, and a weld joint accessory is easy to collapse to form a bad defect; and the problem of softening of welded seams and heat affected zones of the aluminum alloy after welding restricts the application of the aluminum alloy in important structures. In the processing process of laser welding, the heating speed is high, the cooling speed is high, the problem of heat conductivity of aluminum alloy is solved, and the method becomes an efficient processing method very suitable for connecting aluminum alloy workpieces.
The laser welding is a laser material processing technology which can not be achieved by the traditional welding technology by taking laser as an energy carrier to focus on the metal surface with high power density. The laser welding technology of spraying powder not only breaks through the problems existing in the traditional welding wire, but also can be used as a connecting material in welding, so that the performance of the connecting position is obviously improved, and the service life of the material is prolonged.
At present, for the powder used for laser powder-spraying welding, powder of the same composition as the material to be welded is generally used, but since the material to be welded is usually a molded material by heat treatment or rolling a plurality of times, the performance thereof is related to the structure after the processing thereof, which causes a phenomenon that the performance of the welded portion is seriously deteriorated. The development and industrial application of welded workpieces are severely limited due to the general decrease in the performance of the welded parts.
Disclosure of Invention
Aiming at the problem that the performance of the welding part of the existing laser powder spraying welding is seriously reduced by multiple heat treatments or rolling, the invention provides the iron-based amorphous particle reinforced aluminum-based composite spray powder and the laser welding method thereof, namely Fe is utilized 48 Cr 28 Mo 20 C 2 P 2 The amorphous alloy reinforced aluminum-based composite material powder is used as laser powder spraying, so that air holes can be effectively controlled, cracks are avoided, welding deformation is reduced, and the amorphous particle reinforced aluminum-based composite material after welding has good combination and excellent performance.
Iron-based amorphous particle reinforced aluminum-based composite spray powder with Fe as reinforcing phase 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy, wherein the matrix is aluminum alloy; the reinforced phase Fe is calculated by the mass percent of the iron-based amorphous particle reinforced aluminum-based composite spray powder 48 Cr 28 Mo 20 C 2 P 2 The amorphous alloy accounts for 5 to 20 percent.
The method for preparing the iron-based amorphous particle reinforced aluminum-based composite spray powder comprises the following specific steps:
(1) According to the reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 The atomic mass percent of the amorphous alloy is that the raw materials Fe, cr, mo, C and P are mixed uniformly, an alloy ingot is obtained by vacuum smelting, and Fe is obtained by vacuum atomization of the alloy ingot 48 Cr 28 Mo 20 C 2 P 2 Spherical amorphous alloy powder a;
(2) Mixing aluminum alloy powder with Fe in the step (1) 48 Cr 28 Mo 20 C 2 P 2 Uniformly mixing the spherical amorphous alloy powder A to obtain mixed powder B, adding a process control agent D, and ball milling for more than 4 hours in a protective gas atmosphere to obtain the iron-based amorphous particle reinforced aluminum-based composite spray powder with the particle size of 100-150 mu m.
And (3) the protective gas for vacuum atomization in the step (1) is argon.
The step (2) is characterized in that the process control agent D is stearic acid or carbon tetrachloride, and the mass ratio of the process control agent D to the mixed powder B is 1 (20-30).
And (3) the shielding gas in the step (2) is argon or nitrogen.
The ball-material ratio of the ball milling in the step (3) is (15-30): 1, and the ball milling rotating speed is 200-350 r/min.
The application of the iron-based amorphous particle reinforced aluminum-based composite spray powder as laser spray powder in laser welding of aluminum alloy plates comprises the following specific steps:
1) Forming a groove of 80-100 degrees on a welding part of the aluminum alloy plate, and cleaning oil stains and oxide skin on the surface; wherein the aluminum alloy plate is the same as the aluminum alloy in the iron-based amorphous particle reinforced aluminum-based composite spray powder;
2) And spraying the iron-based amorphous particle reinforced aluminum-based composite spray powder to the groove of the aluminum alloy plate by adopting a powder spraying device, and simultaneously adopting laser welding.
The powder feeding amount of the iron-based amorphous particle reinforced aluminum-based composite spray powder is 5-7 g/min, the laser power is 4000-4500W, the welding speed is 5-7 m/min, and the laser spot diameter is 0.5-1 mm.
Preferably, the aluminum alloy powder is 4-series aluminum alloy, and the aluminum alloy plate is 4-series aluminum alloy;
by Fe 48 Cr 28 Mo 20 C 2 P 2 The amorphous alloy reinforced aluminum-based composite material powder is used as laser powder spraying, and in the laser welding process, amorphous particles and aluminum alloy are well combined to effectively control the condition of discontinuous welding seams, so that the generation of air holes is effectively controlled, the crack sensitivity is reduced, and the generation of cracks is avoided; meanwhile, as the mechanical property of the amorphous particles in the powder is far from that of the super-aluminum alloy matrix, the amorphous particles play a role in pinning in the material in the stress process, so that the welding deformation is reduced.
The beneficial effects of the invention are as follows:
(1) The iron-based amorphous particle reinforced aluminum-based composite spray powder is well combined with an aluminum alloy plate after laser powder spraying welding, so that air holes can be effectively controlled, cracks are avoided, and welding deformation is reduced;
(2) According to the iron-based amorphous particle reinforced aluminum-based composite spray powder, the pinning effect of the reinforced particles is improved in the stress process, so that the stress balance of the whole structural member is optimized, and the fatigue damage in the service process is greatly reduced at the joint.
(3) The iron-based amorphous particle reinforced aluminum-based composite spray powder can be produced in batch by a simple ball milling device, and has higher applicability.
Drawings
FIG. 1 is a drawing of example 1Fe 48 Cr 28 Mo 20 C 2 P 2 X-ray diffraction pattern (XRD) of amorphous particles;
FIG. 2 is a Scanning Electron Microscope (SEM) image of an iron-based amorphous particle-reinforced aluminum-based composite powder of example 1;
FIG. 3 is the Hardness (HB) of the iron-based amorphous particle reinforced aluminum-based composite spray powder of example 1 after powder spray laser welding.
Detailed Description
The invention will be described in further detail with reference to specific embodiments, but the scope of the invention is not limited to the description.
Example 1: iron-based amorphous particle reinforced aluminum-based composite spray powder with Fe as reinforcing phase 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy, the matrix is 4 series aluminum alloy with the mark 4004; in mass percent, reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy accounts for 5%;
the preparation method of the iron-based amorphous particle reinforced aluminum-based composite spray powder comprises the following specific steps:
(1) According to the reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 The atomic mass percent of the amorphous alloy is that the raw materials Fe, cr, mo, C and P are mixed uniformly, and are vacuum smelted for 5 times in a high vacuum arc smelting system to obtain an alloy ingot, and the alloy ingot is vacuum atomized by a tight coupling atomizing device to obtain Fe 48 Cr 28 Mo 20 C 2 P 2 Spherical amorphous alloy powder a; wherein the atomization vacuum degree is less than or equal to 10mPa, and the shielding gas is high-purity argon (99.999%);
Fe 48 Cr 28 Mo 20 C 2 P 2 the X-ray diffraction pattern (XRD) of the spherical amorphous alloy powder A is shown in figure 1, and the figure 1 shows that the whole material has no obvious diffraction peak, and only 36-42 degrees has obvious amorphous diffuse scattering peak, which indicates that the Fe 48 Cr 28 Mo 20 C 2 P 2 The amorphous particles have no crystallization phenomenon before and after preparation;
(2) Mixing aluminum alloy powder with Fe in the step (1) 48 Cr 28 Mo 20 C 2 P 2 Uniformly mixing the spherical amorphous alloy powder A to obtain mixed powder B, adding a process control agent D (stearic acid), and ball-milling for 5 hours in a protective gas (high-purity argon (99.999%)) atmosphere to obtain the iron-based amorphous particle reinforced aluminum-based composite spray powder with the particle size of 100-150 mu m; wherein the mass ratio of the process control agent D (stearic acid) to the mixed powder B is 1:20, the ball grinding balls of the ball mill are stainless steel balls, the ball material ratio is 15:1, the ball grinding rotating speed is 200r/min, and the ball grinding process is alternately performed clockwise and anticlockwise, wherein the ball grinding process is performed clockwise for 5min and anticlockwise for 5min;
scanning Electron Microscope (SEM) of the iron-based amorphous particle-reinforced aluminum-based composite ejection powder is shown in FIG. 2, and as can be seen from FIG. 2, the particle size of the iron-based amorphous particle-reinforced aluminum-based composite ejection powder is basically in the range of 100-150 μm;
the application of the iron-based amorphous particle reinforced aluminum-based composite spray powder as laser spray powder in laser welding of aluminum alloy plates comprises the following specific steps:
1) The welding part of a 4-series aluminum alloy plate with the mark 4004 is provided with an 80-degree groove, and acetone solution is used for cleaning oil stains and oxide scales on the surface;
2) Spraying the iron-based amorphous particle reinforced aluminum-based composite spray powder to a groove of aluminum alloy plate welding by adopting a powder spraying device, and simultaneously adopting laser welding; the powder feeding amount of the iron-based amorphous particle reinforced aluminum-based composite spray powder is 5g/min, the laser power is 4000W, the welding speed is 5m/min, and the laser spot diameter is 0.5mm;
Fe 48 Cr 28 Mo 20 C 2 P 2 the aluminum plate welded by powder spraying laser welding of the amorphous particle reinforced 4004 aluminum-based composite material has good combination at the welded part, and no obvious air holes, cracks and deformation are generated; the Hardness (HB) is shown in FIG. 3 and tested to be 75HB, which is only a 18% reduction in hardness compared to the 4004 aluminum plate.
Example 2: iron-based amorphous particle reinforced aluminum-based composite spray powder with Fe as reinforcing phase 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy, the matrix is 4 series aluminum alloy with the mark of 4032; in mass percent, reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy accounts for 10%;
the preparation method of the iron-based amorphous particle reinforced aluminum-based composite spray powder comprises the following specific steps:
(1) According to the reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 The atomic mass percent of the amorphous alloy is that the raw materials Fe, cr, mo, C and P are mixed uniformly, and are vacuum smelted for 5 times in a high vacuum arc smelting system to obtain an alloy ingot, and the alloy ingot is vacuum atomized by a tightly coupled atomizing device to obtainTo Fe 48 Cr 28 Mo 20 C 2 P 2 Spherical amorphous alloy powder a; wherein the atomization vacuum degree is less than or equal to 10mPa, and the shielding gas is high-purity argon (99.999%);
(2) Mixing aluminum alloy powder with Fe in the step (1) 48 Cr 28 Mo 20 C 2 P 2 Uniformly mixing the spherical amorphous alloy powder A to obtain mixed powder B, adding a process control agent D (stearic acid), and ball-milling for 6 hours in a protective gas (high-purity argon (99.999%)) atmosphere to obtain the iron-based amorphous particle reinforced aluminum-based composite spray powder with the particle size of 100-150 mu m; wherein the mass ratio of the process control agent D (stearic acid) to the mixed powder B is 1:25, the ball grinding balls of the ball mill are stainless steel balls, the ball material ratio is 20:1, the ball grinding rotating speed is 300r/min, and the ball grinding process is alternately performed clockwise and anticlockwise, wherein the ball grinding process is performed clockwise for 10min and anticlockwise for 10min;
the application of the iron-based amorphous particle reinforced aluminum-based composite spray powder as laser spray powder in laser welding of aluminum alloy plates comprises the following specific steps:
1) A 90-degree groove is formed in a welding position of a 4-series aluminum alloy plate with the mark 4032, and an acetone solution is used for cleaning oil stains and oxide scales on the surface;
2) Spraying the iron-based amorphous particle reinforced aluminum-based composite spray powder to a groove of aluminum alloy plate welding by adopting a powder spraying device, and simultaneously adopting laser welding; the powder feeding amount of the iron-based amorphous particle reinforced aluminum-based composite spray powder is 6g/min, the laser power is 4500W, the welding speed is 6m/min, and the diameter of a laser spot is 1mm;
Fe 48 Cr 28 Mo 20 C 2 P 2 the aluminum plate welded by powder spraying laser welding of the amorphous particle reinforced 4032 aluminum-based composite material has good combination at the welded part, and no obvious air holes, cracks and deformation are generated; the hardness was tested to 79HB, which is only 15% lower than the hardness of a 4032 aluminum plate.
Example 3: iron-based amorphous particle reinforced aluminum-based composite spray powder with Fe as reinforcing phase 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy, the matrix is 4 series aluminum alloy with the mark of 4043; the weight percentage is increasedStrong phase Fe 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy accounts for 10%;
the preparation method of the iron-based amorphous particle reinforced aluminum-based composite spray powder comprises the following specific steps:
(1) According to the reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 The atomic mass percent of the amorphous alloy is that the raw materials Fe, cr, mo, C and P are mixed uniformly, and are vacuum smelted for 5 times in a high vacuum arc smelting system to obtain an alloy ingot, and the alloy ingot is vacuum atomized by a tight coupling atomizing device to obtain Fe 48 Cr 28 Mo 20 C 2 P 2 Spherical amorphous alloy powder a; wherein the atomization vacuum degree is less than or equal to 10mPa, and the shielding gas is high-purity argon (99.999%);
(2) Mixing aluminum alloy powder with Fe in the step (1) 48 Cr 28 Mo 20 C 2 P 2 Uniformly mixing the spherical amorphous alloy powder A to obtain mixed powder B, adding a process control agent D (stearic acid), and ball-milling for 5 hours in a protective gas (high-purity argon (99.999%)) atmosphere to obtain the iron-based amorphous particle reinforced aluminum-based composite spray powder with the particle size of 100-150 mu m; wherein the mass ratio of the process control agent D (stearic acid) to the mixed powder B is 1:25, the ball grinding balls of the ball mill are stainless steel balls, the ball material ratio is 25:1, the ball grinding rotating speed is 250r/min, and the ball grinding process is performed alternately clockwise and anticlockwise, wherein the ball grinding process is performed for 8min clockwise and 8min anticlockwise;
the application of the iron-based amorphous particle reinforced aluminum-based composite spray powder as laser spray powder in laser welding of aluminum alloy plates comprises the following specific steps:
1) A welding part of a 4-series aluminum alloy plate with the mark 4043 is provided with a 100-degree groove, and an acetone solution is used for cleaning oil stains and oxide scales on the surface;
2) Spraying the iron-based amorphous particle reinforced aluminum-based composite spray powder to a groove of aluminum alloy plate welding by adopting a powder spraying device, and simultaneously adopting laser welding; the powder feeding amount of the iron-based amorphous particle reinforced aluminum-based composite spray powder is 7g/min, the laser power is 4500W, the welding speed is 7m/min, and the diameter of a laser spot is 1mm;
Fe 48 Cr 28 Mo 20 C 2 P 2 the aluminum plate welded by powder spraying laser welding of the amorphous particle reinforced 4043 aluminum-based composite material has good combination at the welded part, and no obvious air holes, cracks and deformation are generated; the hardness was tested to 77HB, which is only 13% lower than the hardness of a 4043 aluminum plate.
Example 4: iron-based amorphous particle reinforced aluminum-based composite spray powder with Fe as reinforcing phase 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy, the matrix is 4 series aluminum alloy with the mark of 4047; in mass percent, reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy accounts for 15%;
the preparation method of the iron-based amorphous particle reinforced aluminum-based composite spray powder comprises the following specific steps:
(1) According to the reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 The atomic mass percent of the amorphous alloy is that the raw materials Fe, cr, mo, C and P are mixed uniformly, and are vacuum smelted for 5 times in a high vacuum arc smelting system to obtain an alloy ingot, and the alloy ingot is vacuum atomized by a tight coupling atomizing device to obtain Fe 48 Cr 28 Mo 20 C 2 P 2 Spherical amorphous alloy powder a; wherein the atomization vacuum degree is less than or equal to 10mPa, and the shielding gas is high-purity argon (99.999%);
(2) Mixing aluminum alloy powder with Fe in the step (1) 48 Cr 28 Mo 20 C 2 P 2 Uniformly mixing the spherical amorphous alloy powder A to obtain mixed powder B, adding a process control agent D (carbon tetrachloride), and ball-milling for 5 hours in a protective gas (high-purity argon (99.999%)) atmosphere to obtain the iron-based amorphous particle reinforced aluminum-based composite spray powder with the particle size of 100-150 mu m; wherein the mass ratio of the process control agent D (carbon tetrachloride) to the mixed powder B is 1:30, the ball grinding balls of the ball mill are stainless steel balls, the ball material ratio is 30:1, the ball grinding rotating speed is 350r/min, and the ball grinding process is alternately performed clockwise and anticlockwise, wherein the ball grinding process is performed clockwise for 15min and anticlockwise for 15min;
the application of the iron-based amorphous particle reinforced aluminum-based composite spray powder as laser spray powder in laser welding of aluminum alloy plates comprises the following specific steps:
1) A 90-degree groove is formed in a welding position of a 4-series aluminum alloy plate with the mark 4047, and an acetone solution is used for cleaning oil stains and oxide scales on the surface;
2) Spraying the iron-based amorphous particle reinforced aluminum-based composite spray powder to a groove of aluminum alloy plate welding by adopting a powder spraying device, and simultaneously adopting laser welding; the powder feeding amount of the iron-based amorphous particle reinforced aluminum-based composite spray powder is 7g/min, the laser power is 4000W, the welding speed is 6m/min, and the laser spot diameter is 0.5mm;
Fe 48 Cr 28 Mo 20 C 2 P 2 the aluminum plate welded by powder spraying laser welding of the amorphous particle reinforced 4047 aluminum-based composite material has good combination at the welded part, and no obvious air holes, cracks and deformation are generated; the hardness was tested to 76HB, which is only 15% lower than the hardness of a 4047 aluminum plate.
While the specific embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. The application of the iron-based amorphous particle reinforced aluminum-based composite spray powder in laser welding of aluminum alloy plates is characterized in that: the Fe-based amorphous particle reinforced aluminum-based composite spray powder has a reinforcing phase of Fe 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy, the reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 The amorphous alloy is measured according to atomic mass percent; the matrix is 4 series aluminum alloy; the reinforced phase Fe is calculated by the mass percent of the iron-based amorphous particle reinforced aluminum-based composite spray powder 48 Cr 28 Mo 20 C 2 P 2 Amorphous alloy accounts for 5% -20%;
the specific steps of the application are as follows:
1) Forming an 80-100-degree groove on a welding position of the 4-series aluminum alloy plate, and cleaning oil stains and oxide skin on the surface; wherein the aluminum alloy plate is the same as the aluminum alloy in the iron-based amorphous particle reinforced aluminum-based composite spray powder;
2) And spraying the iron-based amorphous particle reinforced aluminum-based composite spray powder to the groove of the aluminum alloy plate by adopting a powder spraying device, and simultaneously adopting laser welding.
2. The use according to claim 1, characterized in that the method for preparing the iron-based amorphous particle-reinforced aluminium-based composite powder comprises the following specific steps:
(1) According to the reinforcing phase Fe 48 Cr 28 Mo 20 C 2 P 2 The atomic mass percent of the amorphous alloy is that the raw materials Fe, cr, mo, C and P are mixed uniformly, an alloy ingot is obtained by vacuum smelting, and Fe is obtained by vacuum atomization of the alloy ingot 48 Cr 28 Mo 20 C 2 P 2 Spherical amorphous alloy powder a;
(2) Mixing 4-series aluminum alloy powder and Fe in the step (1) 48 Cr 28 Mo 20 C 2 P 2 Uniformly mixing the spherical amorphous alloy powder A to obtain mixed powder B, adding a process control agent D, and ball-milling for more than 4 hours in a protective gas atmosphere to obtain the iron-based amorphous particle reinforced aluminum-based composite spray powder with the particle size of 100-150 mu m; the process control agent D is stearic acid or carbon tetrachloride.
3. The use according to claim 2, characterized in that: the shielding gas for vacuum atomization in the step (1) is argon.
4. The use according to claim 2, characterized in that: and (2) the mass ratio of the process control agent D to the mixed powder B is 1 (20-30).
5. The use according to claim 2, characterized in that: and (3) the shielding gas in the step (2) is argon or nitrogen.
6. The use according to claim 2, characterized in that: the ball-material ratio of the ball milling in the step (2) is (15-30) 1, and the ball milling rotating speed is 200-350 r/min.
7. The use according to claim 1, characterized in that: the powder feeding amount of the iron-based amorphous particle reinforced aluminum-based composite spray powder is 5-7 g/min, the laser power is 4000-4500W, the welding speed is 5-7 m/min, and the laser spot diameter is 0.5-1 mm.
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| CN105803236A (en) * | 2016-03-24 | 2016-07-27 | 济南大学 | Amorphous alloy reinforced aluminum matrix composite and preparation method thereof |
| CN108220701A (en) * | 2018-01-17 | 2018-06-29 | 昆明理工大学 | A kind of non-crystalline grains reinforced aluminium-base composite material and preparation method thereof |
| CN109763042A (en) * | 2019-03-27 | 2019-05-17 | 南通巨升非晶科技有限公司 | A kind of composite material and preparation method of amorphous alloy enhancing |
| CN112593123A (en) * | 2020-12-14 | 2021-04-02 | 昆明理工大学 | Zirconium-based amorphous particle reinforced aluminum-based composite material and preparation method thereof |
| KR20220031447A (en) * | 2020-09-04 | 2022-03-11 | 코오롱인더스트리 주식회사 | Coated body and manufacturing method thereof |
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| CN106148948A (en) * | 2016-07-18 | 2016-11-23 | 中国人民解放军装甲兵工程学院 | Aluminum based metallic glass cladding layer and preparation method thereof |
| US11035029B2 (en) * | 2018-12-21 | 2021-06-15 | Industrial Technology Research Institute | Material for forming metal matrix composite and metal matrix composite bulk |
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| CN105803236A (en) * | 2016-03-24 | 2016-07-27 | 济南大学 | Amorphous alloy reinforced aluminum matrix composite and preparation method thereof |
| CN108220701A (en) * | 2018-01-17 | 2018-06-29 | 昆明理工大学 | A kind of non-crystalline grains reinforced aluminium-base composite material and preparation method thereof |
| CN109763042A (en) * | 2019-03-27 | 2019-05-17 | 南通巨升非晶科技有限公司 | A kind of composite material and preparation method of amorphous alloy enhancing |
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