CN116713471A - Sheath and method for near net forming of continuous fiber reinforced metal matrix composite member - Google Patents
Sheath and method for near net forming of continuous fiber reinforced metal matrix composite member Download PDFInfo
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- CN116713471A CN116713471A CN202310688926.3A CN202310688926A CN116713471A CN 116713471 A CN116713471 A CN 116713471A CN 202310688926 A CN202310688926 A CN 202310688926A CN 116713471 A CN116713471 A CN 116713471A
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- sheath
- fiber reinforced
- continuous fiber
- matrix composite
- metal matrix
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- 239000000835 fiber Substances 0.000 title claims abstract description 50
- 239000011156 metal matrix composite Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000843 powder Substances 0.000 claims description 42
- 238000003825 pressing Methods 0.000 claims description 21
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 14
- 238000007731 hot pressing Methods 0.000 claims description 14
- 238000010894 electron beam technology Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 6
- 238000001513 hot isostatic pressing Methods 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000005242 forging Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 239000010953 base metal Substances 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- 229910000851 Alloy steel Inorganic materials 0.000 claims 1
- 230000008569 process Effects 0.000 description 10
- 239000002131 composite material Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/1208—Containers or coating used therefor
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/04—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/10—Refractory metals
- C22C49/11—Titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The invention provides a sheath for near-net forming of a continuous fiber reinforced metal matrix composite component and a near-net forming method. The technical scheme provided by the invention simply solves the technical problem of near net forming of complex components of the continuous fiber reinforced metal matrix composite.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a sheath and a method for near net forming of a continuous fiber reinforced metal matrix composite member.
Background
With the development of aerospace equipment technology, the design of parts tends to be complicated and integrated, and higher performances are required, typical components such as turbine blade rings, cases and the like have complex structures and high service strength performance requirements, so that great problems are brought to corresponding materials and forming technologies thereof, and the continuous fiber reinforced composite material can realize high-strength toughening of the materials in a specific direction and is an important means for solving the problems.
In the prior art, patent document CN103561890a discloses a method for manufacturing a turbine engine integral part using a diffusion bonding technique, which uses hot isostatic pressing to diffusion bond multiple layers of wires wound around a mandrel into one piece. Patent document US2007/0051455A1 discloses a method for producing an aero turbine component by hot isostatic pressing of a bundle of coated filaments around a winding perpendicular to a rotating body in a sheath. Patent document US8065799B2 discloses a method for manufacturing a turbine disk by cladding hot isostatic pressing by embedding fibers between two pieces of forging stock. Patent document CN104532171a discloses a method of hot isostatic pressing of a continuous fiber reinforced aluminum matrix composite material with pre-burying a carbon fiber preform, such as a powder sheath. The forming method of the continuous fiber reinforced metal matrix composite member provided in the prior art still cannot be used for near net forming of a complex structure, the prior forming preparation method is limited, the process is complex, the processing removal amount is large, the applicability of the forming process to the member structure is not strong, and the application range of the forming process is limited.
Disclosure of Invention
In order to solve the problems in the prior art, a sheath and a method for near net shape forming of a continuous fiber reinforced metal matrix composite member are provided.
The technical scheme adopted for solving the technical problems is as follows:
the invention provides a sheath for near net forming of a continuous fiber reinforced metal matrix composite component, which comprises a cylindrical central preform; the mold further comprises an outer mold core, wherein the outer mold core is a rotating body with an L-shaped section; the central preform is arranged in the outer mold core; the device also comprises a pressing block; the pressing block, the outer die core and the central preform are matched at the cavity to form a powder cavity for containing powder; the outer surface of the outer mold core is provided with an edge preform powder cavity; the outer layer of the outer mold core is provided with a cylinder wall, and an upper end cover is arranged above the pressing block, the outer mold core and the central preform; the bottom of the outer mold core and the bottom of the central preform are provided with a lower end cover, and the upper end cover, the lower end cover and the cylinder wall form a sheath shell.
Preferably, the upper end cover is provided with a bulge, and the bulge is arranged above the pressing block and can drive the pressing block to move up and down; the bulge is annular with a table-shaped cross section.
Preferably, the outer surface of the central preform is provided with grooves, long fibers are wound and filled in the grooves, the continuous long fibers are uniformly distributed and fixed on the preform, and displacement or shearing of the continuous long fibers in the forming process in the process is avoided.
Preferably, the long fiber is one or more of boron fiber, carbon fiber, silicon carbide fiber, tungsten filament, molybdenum filament and tungsten core silicon carbide fiber plated with base metal.
Preferably, the central preform and the powder material are titanium alloy, aluminum-titanium alloy and Ti 2 One or more of an AlNb alloy (a transition metal titanium alloy added with aluminum and niobium elements), a nickel-based alloy, and a stainless steel.
Preferably, the preparation method of the central preform is one of the following three methods: forging stock, casting blank and hot isostatic pressing powder compact.
The invention also provides a near-net forming method of the continuous fiber reinforced metal matrix composite member by adopting the sheath, which comprises the following steps:
s1, filling raw material powder into a powder cavity;
s2, welding the sleeve wall, the upper end cover and the lower end cover by adopting a vacuum electron beam;
s3, carrying out hot pressing treatment on the welded sheath;
s4, removing the surface sheath and redundant matrix materials through machining after hot press forming;
and S5, performing chemical corrosion treatment to obtain the formed member.
Preferably, in step S1, the raw material powder is atomized spherical powder, and the average particle size is 50 to 150. Mu.m.
Preferably, in step S2, the vacuum degree of the vacuum electron beam welding is not more than 1×10 -3 Pa。
Preferably, in the step S3, the pressure of the hot pressing treatment is 100-500 MPa, the hot pressing temperature is 1/2-3/4 of the melting point temperature of the powder, and the hot pressing time is 2-5 h.
The invention has the beneficial effects that:
firstly, introducing a preform into a sheath, and grooving the preform, so that uniform distribution and position fixing of continuous long fibers on the preform are realized, and displacement or shearing of the continuous long fibers in the forming process in the appearance process is avoided. Secondly, by combining vacuum sheathing with hot press forming, densification of powder, diffusion connection forming between the powder and a prefabricated body and composite forming between continuous fibers and a metal matrix can be realized simultaneously; and thirdly, ensuring the precision of the inner cavity structure of the workpiece through the mold core, thereby obtaining a high-performance and accurate complex component.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a sheath for near net shape formation of a continuous fiber reinforced metal matrix composite member according to an embodiment;
FIG. 2 is a schematic cross-sectional view of a sheath for near net shape formation of a continuous fiber reinforced metal matrix composite member according to the first embodiment;
FIG. 3 is a schematic view of a jacket outer mold core structure for near net shape forming of a continuous fiber reinforced metal matrix composite member according to an embodiment;
FIG. 4 is a schematic illustration of a jacket structure after filling a jacket for near net shape forming of a continuous fiber reinforced metal matrix composite member in accordance with the first embodiment;
FIG. 5 is a schematic view of a sheath structure after hot pressing for near net shape forming of a continuous fiber reinforced metal matrix composite member according to the first embodiment;
fig. 6 is a schematic view of a continuous fiber reinforced metal matrix composite member after being processed with a sheath for near net shape forming according to the first embodiment.
Fig. 7 is a schematic cross-sectional view of a member after a sheath for near net shape forming of a continuous fiber reinforced metal matrix composite member according to the first embodiment.
Reference numerals illustrate:
1, an upper end cover; 2, the wall of the cylinder; 3, a lower end cover; 4, an outer mold core; 5a central preform; 6, briquetting; 7, a powder cavity; 8, prefabricating a powder cavity at the edge; 9 grooves; 10 titanium alloy powder; 11 edge preform; 12 silicon carbide fibers.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Example 1
Referring to fig. 1 to 7, this embodiment proposes a sheath for near net shape forming of a continuous fiber reinforced metal matrix composite member, comprising a cylindrical titanium alloy central preform 5, the central preform 5 being made by a forging process; the mold further comprises an outer mold core 4, wherein the outer mold core 4 is a rotating body with an L-shaped section, and the structure of the outer film core 4 is shown in fig. 3; the central preform 5 is arranged in the outer mould core 4; also comprises a pressing block 6; the pressing block 6, the outer die core 4 and the central preform 5 are matched at the cavity to form a powder cavity 7 for containing powder; the outer surface of the outer mold core 4 is provided with an edge preform powder cavity 8, so that the edge preform 11 can be obtained in the molding process; the outer layer of the outer mold core 4 is provided with a cylinder wall 2, and an upper end cover 1 is arranged above the pressing block 6, the outer mold core 4 and the central preform 5; the bottom of outer mould core 4 and central prefabrication body 5 is equipped with bottom end cover 3, upper end cover 1, bottom end cover 3 and section of thick bamboo wall 2 constitute the sheath shell, and the schematic structure of sheath surface is shown in figure 1, and the schematic structure of sheath inside is shown in figure 2.
The upper end cover 1 is provided with a bulge, the bulge is arranged above the pressing block 6 and can drive the pressing block 6 to move up and down, and the bulge is annular with a table-shaped cross section.
The outer surface of the central preform 5 is provided with a groove 9, and silicon carbide fibers 12 are wound and filled in the groove 9.
The embodiment also provides a near-net forming method of the continuous fiber reinforced metal matrix composite member by adopting the sheath, which specifically comprises the following steps:
s1, filling raw material titanium alloy powder 10 into a powder cavity 7, wherein the titanium alloy raw material powder is atomized spherical powder, the average particle size is about 100 mu m, and the powder-filled sheath structure is shown in figure 4;
s2, welding the sleeve wall 2, the upper end cover 1 and the lower end cover 3 by adopting a vacuum electron beam; vacuum electron beam welding with a vacuum degree of 1×10 -3 Pa；
S3, carrying out hot pressing treatment on the welded sheath for 3.5 hours under the condition of 300MPa, wherein the hot pressing temperature is 1/2 of the melting point temperature of the titanium alloy, and the upper end cover 1 drives the pressing block 6 to press the titanium alloy powder 10 during the hot pressing treatment, as shown in FIG. 5;
s4, removing the surface sheath and redundant matrix materials through machining after hot press forming;
and S5, carrying out chemical corrosion treatment to obtain a formed component, wherein the formed component is as shown in fig. 6 and 7, and the silicon carbide fibers 12 can be observed to strengthen the component.
Example two
The embodiment provides a sheath for near net forming of a continuous fiber reinforced metal matrix composite member, which comprises a cylindrical aluminum-titanium alloy central preform 5, wherein the central preform 5 is prepared by a forging process; the mold further comprises an outer mold core 4, wherein the outer mold core 4 is a rotating body with an L-shaped section; the central preform 5 is arranged in the outer mould core 4; also comprises a pressing block 6; the pressing block 6, the outer die core 4 and the central preform 5 are matched at the cavity to form a powder cavity 7 for containing powder; the outer surface of the outer mold core 4 is provided with an edge preform powder cavity 8; the outer layer of the outer mold core 4 is provided with a cylinder wall 2, and an upper end cover 1 is arranged above the pressing block 6, the outer mold core 4 and the central preform 5; the bottom of outer mould core 4 and central prefabrication body 5 is equipped with bottom end cover 3, upper end cover 1, bottom end cover 3 and section of thick bamboo wall 2 constitute the sheath shell, and the schematic structure of sheath surface is shown in figure 1, and the schematic structure of sheath inside is shown in figure 2.
The upper end cover 1 is provided with a bulge, the bulge is arranged above the pressing block 6 and can drive the pressing block 6 to move up and down, and the bulge is annular with a table-shaped cross section.
The outer surface of the central preform 5 is provided with a groove 9, and carbon fibers are wound and filled in the groove 9.
The embodiment also provides a near-net forming method of the continuous fiber reinforced metal matrix composite member by adopting the sheath, which specifically comprises the following steps:
s1, filling raw material aluminum-titanium alloy powder into a powder cavity 7, wherein the aluminum-titanium alloy raw material powder is atomized spherical powder, and the average particle size is about 150 mu m;
s2, welding the sleeve wall 2, the upper end cover 1 and the lower end cover 3 by adopting a vacuum electron beam; vacuum degree of vacuum electron beam welding is 5×10 -4 Pa；
S3, carrying out hot pressing treatment on the welded sheath for 5 hours under the condition of 100MPa, wherein the hot pressing temperature is 3/4 of the melting point temperature of the aluminum-titanium alloy;
s4, removing the surface sheath and redundant matrix materials through machining after hot press forming;
and S5, performing chemical corrosion treatment to obtain the formed member.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A sheath for near net shape forming of a continuous fiber reinforced metal matrix composite member, comprising a cylindrical central preform; the mold further comprises an outer mold core, wherein the outer mold core is a rotating body with an L-shaped section; the central preform is arranged in the outer mold core; the device also comprises a pressing block; the pressing block, the outer die core and the central preform are matched at the cavity to form a powder cavity for containing powder; the outer surface of the outer mold core is provided with an edge preform powder cavity; the outer layer of the outer mold core is provided with a cylinder wall, and an upper end cover is arranged above the pressing block, the outer mold core and the central preform; the bottom of the outer mold core and the bottom of the central preform are provided with a lower end cover, and the upper end cover, the lower end cover and the cylinder wall form a sheath shell.
2. The sheath for near net-shape forming of a continuous fiber reinforced metal matrix composite member according to claim 1, wherein a protrusion is arranged on the upper end cover, and the protrusion is arranged above the pressing block and can drive the pressing block to move up and down; the bulge is annular with a table-shaped cross section.
3. A sheath for near net shape forming of a continuous fiber reinforced metal matrix composite member as claimed in claim 1, wherein the outer surface of said central preform is grooved, and said grooves are wound with and filled with long fibers.
4. A sheath for near net shape forming of a continuous fiber reinforced metal matrix composite member as claimed in claim 3, wherein said long fibers are one or more of boron fibers, carbon fibers, silicon carbide fibers, tungsten filaments, molybdenum filaments, tungsten core silicon carbide fibers plated with a base metal.
5. The sheath for near net shape forming of continuous fiber reinforced metal matrix composite members according to claim 1, wherein said central preform and powder material are titanium alloy, titanium aluminum alloy, ti 2 One or more of AlNb alloy, nickel base alloy and stainless steel.
6. The sheath for near net shape forming of a continuous fiber reinforced metal matrix composite member as claimed in claim 1, wherein said central preform is prepared by one of the following three methods: forging stock, casting blank and hot isostatic pressing powder compact.
7. A method for near net-shape forming of a continuous fiber reinforced metal matrix composite member using the sheath of any of claims 1-6, comprising the steps of:
s1, filling raw material powder into a powder cavity;
s2, welding the sleeve wall, the upper end cover and the lower end cover by adopting a vacuum electron beam;
s3, carrying out hot pressing treatment on the welded sheath;
s4, removing the surface sheath and redundant matrix materials through machining after hot press forming;
and S5, performing chemical corrosion treatment to obtain the formed member.
8. The method for near net-shape forming a continuous fiber reinforced metal matrix composite member according to claim 7, wherein in step S1, the raw material powder is atomized spherical powder having an average particle size of 50 to 150 μm.
9. The near net shape forming method of a continuous fiber reinforced metal matrix composite member according to claim 7, wherein in step S2, a vacuum degree of vacuum electron beam welding is not more than 1 x 10 -3 Pa。
10. The method for near net-shape forming of a continuous fiber reinforced metal matrix composite member according to claim 7, wherein in step S3, the pressure of the hot pressing treatment is 100 to 500MPa, the hot pressing temperature is 1/2 to 3/4 of the powder melting point temperature, and the hot pressing time is 2 to 5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310688926.3A CN116713471A (en) | 2023-06-12 | 2023-06-12 | Sheath and method for near net forming of continuous fiber reinforced metal matrix composite member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310688926.3A CN116713471A (en) | 2023-06-12 | 2023-06-12 | Sheath and method for near net forming of continuous fiber reinforced metal matrix composite member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116713471A true CN116713471A (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310688926.3A Pending CN116713471A (en) | 2023-06-12 | 2023-06-12 | Sheath and method for near net forming of continuous fiber reinforced metal matrix composite member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116713471A (en) |
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- 2023-06-12 CN CN202310688926.3A patent/CN116713471A/en active Pending
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