CN111850433A

CN111850433A - Continuous silicon carbide fiber reinforced metal matrix fiber wire, preparation method and composite material

Info

Publication number: CN111850433A
Application number: CN202010769209.XA
Authority: CN
Inventors: 孙中刚; 齐芳娟; 陈小龙; 张文书
Original assignee: Nanjing Tech University
Current assignee: Nanjing Tech University
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2020-10-30

Abstract

The invention provides a continuous silicon carbide fiber reinforced metal matrix fiber wire, a preparation method and a composite material, wherein the continuous silicon carbide fiber reinforced metal matrix fiber wire takes metal powder as a substrate, and a continuous SiC fiber wire is added into the substrate to form the continuous SiC fiber reinforced metal matrix fiber wire, wherein the metal powder is coated on the surface of the continuous SiC fiber wire through a binder, and the mass percentage of the continuous SiC fiber wire and the metal matrix fiber wire is 25-28%. According to the invention, the metal powder is mixed with the binder, and the metal wraps the surface of the continuous silicon carbide fiber, so that the melting temperature is reduced, wherein the metal powder is used as a protective barrier, thereby not only avoiding carbonization of the continuous fiber, but also improving the use temperature of the composite material and improving the strength and toughness of the composite material.

Description

Continuous silicon carbide fiber reinforced metal matrix fiber wire, preparation method and composite material

Technical Field

The invention relates to the technical field of additive manufacturing, in particular to a continuous silicon carbide fiber reinforced metal matrix fiber wire, a preparation method, a continuous silicon carbide fiber reinforced metal matrix composite and an additive manufacturing method.

Background

The continuous silicon carbide (SiC) fiber is a polycrystalline ceramic fiber and has the characteristics of high temperature resistance, oxidation resistance, corrosion resistance, aging resistance, excellent mechanical property and the like. Is called a new material applied in the aerospace and high technology fields of the 21 st century because of its excellent performance, and is widely applied to reinforced polymer-based, metal-based and ceramic-based composite materials.

In the conventional process of manufacturing fiber alloy composite materials, molten metal is poured onto short fibers, and the fiber alloy composite materials are formed after the molten metal is cooled. In the process, not only energy is consumed and the fiber is easy to carbonize, but also the formed composite material has poor service performance.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a continuous silicon carbide fiber reinforced metal-based fiber wire and a preparation method thereof. A continuous SiC fiber metal-based fiber material is formed as a whole with a metal powder as a matrix and continuous SiC fibers added to the matrix.

The invention also proposes a method for preparing a continuous fiber metal composite using additive manufacturing, and in particular to prepare the resulting continuous SiC fiber reinforced metal matrix composite.

According to the first aspect of the invention, the continuous SiC fiber reinforced metal matrix fiber wire is formed by taking metal powder as a substrate and adding continuous SiC fiber wires into the substrate, wherein the metal powder is coated on the surface of the continuous SiC fiber wires through a binder, and the mass percentage of the continuous SiC fiber wires and the metal matrix fiber wires is 25-28%.

Preferably, the binder is polyvinylidene fluoride (PDVF).

According to a second aspect of the object of the present invention, there is also provided a method for producing a continuous SiC fiber-reinforced metal-based fiber wire, comprising the steps of:

step 1, loading a mixture of metal powder and a binder in an inert gas protective environment, heating to melt the binder, and controlling the temperature within a preset temperature range through temperature control to form a molten mixture of a binder solution and the metal powder;

and 2, conveying the continuous SiC fiber filaments into a molten pool filled with a molten mixture of the binder and the metal powder through a filament feeding mechanism for paving: under the action of the binder, a layer of molten mixture of the binder and the metal powder is adhered to the surface of the continuous SiC fiber yarn in the movement process, namely an adhesive layer of the binder and the metal powder is formed on the surface of the continuous SiC fiber yarn;

and 3, conveying the continuous SiC fiber wires with the adhesive layers of the adhesive and the metal to the outside of the molten pool through a wire feeding mechanism, and cooling by using a cooling device to form a continuous SiC fiber metal combination.

Preferably, the annual temperature of the aforementioned heating process is controlled between 190 ℃ and 300 ℃.

Wherein, in an optional embodiment, the method further comprises the steps of:

and winding the continuous SiC fiber wire attached with the binder and the metal powder through a roller to form a continuous fiber roll.

Preferably, the adhesion layer is 1 layer.

Preferably, in the molten mixture, the metal powder is one of titanium alloy powder, high-entropy alloy powder or high-temperature alloy powder, and the binder accounts for 1-5% of the molten mixture by mass.

According to a third aspect of the object of the present invention, there is also provided a method for preparing a continuous SiC fiber reinforced metal matrix composite, comprising the steps of:

step 1, adding continuous SiC fiber yarns into a substrate by taking metal powder as the substrate to form continuous SiC fiber reinforced metal matrix fiber yarns, wherein the metal powder is coated on the surface of the continuous SiC fiber yarns through a binder, and the mass percentage of the continuous SiC fiber yarns and the metal matrix fiber yarns is 25-28%;

step 2, taking the continuous SiC fiber reinforced metal matrix fiber wire as a printing base material, and performing printing forming according to a set printing program to obtain a continuous SiC fiber reinforced metal matrix composite blank;

step 3, sintering the blank once, and removing the binder in the blank formed by printing;

and 4, carrying out secondary sintering on the blank without the binder to obtain the compact continuous SiC fiber reinforced metal matrix composite.

Preferably, the sintering temperature of the primary sintering of the step 3 is 300-.

Preferably, the secondary sintering is carried out at the sintering temperature of 800-1000 ℃ and the pressure of 5-10 MPa.

Preferably, the sintering shrinkage of the secondary sintering is controlled to be 10-25%.

According to a fourth aspect of the object of the present invention, there is also provided a continuous SiC fiber reinforced metal matrix composite prepared by the aforementioned method.

According to the scheme, the metal-matrix composite material is reinforced by the continuous silicon carbide fiber, wherein the metal material is wrapped on the surface of the silicon carbide fiber to form the continuous silicon carbide fiber reinforced metal fiber wire, and the metal-matrix composite material is prepared by additive manufacturing on the basis, so that the metal yield strength, the tensile strength and the elongation rate of the composite material are improved. By utilizing the high strength and toughness of the continuous SiC fiber, when different metal powder such as high-entropy alloy, titanium alloy, high-temperature alloy and the like is wrapped on the surface of the continuous SiC fiber, the surface carbonization of the continuous SiC fiber can be prevented, the strength and toughness are improved, and in addition, the continuous SiC fiber also has good creep resistance and the service life of the material is prolonged.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of a production system of continuous SiC fiber-reinforced metal-based fiber wires according to an exemplary embodiment of the present invention.

FIG. 2 is a schematic illustration of a fiber coil of continuous SiC fiber reinforced metal matrix fiber wire of an exemplary embodiment of the present invention.

Fig. 3 is a schematic diagram of an additive manufacturing printing system according to an exemplary embodiment of the present invention.

Fig. 4 is a schematic illustration of an additive manufactured printed composite blank according to an exemplary embodiment of the invention.

Fig. 5 is a schematic illustration of an additive manufactured printed composite material according to an exemplary embodiment of the invention.

Detailed Description

In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.

In combination with the figure, the continuous SiC fiber reinforced metal matrix fiber wire is provided according to the exemplary embodiment of the invention, and is used for manufacturing printed wires in an additive mode, the continuous SiC fibers are used for reinforcing metal powder base materials to form the continuous SiC fiber reinforced metal matrix fiber wire, the toughness and the strength of the wire are improved, and the printed composite material can be used as a high-temperature resistant material, a heat-resistant curtain for conveying belts for high-temperature substances, metal refining, rolling, welding and other operations, a corrosion-resistant material, a coating in the navigation field, a body structure material, a marine defense project and the like. Meanwhile, based on the characteristic of linking with silicon carbide reinforcement, the silicon carbide composite material can also be used as a fiber reinforced metal material, can be used for structural materials of bodies, structural parts, engine parts, surrounding parts and fan blades in the fields of aerospace, aviation, automobile industry and the like, and meets the performance requirements on strength and toughness.

According to the continuous silicon carbide fiber reinforced metal matrix fiber wire material provided by the exemplary embodiment of the invention, metal powder is used as a substrate, and a continuous SiC fiber wire is added into the substrate to form the continuous SiC fiber reinforced metal matrix fiber wire material. Wherein the metal powder is coated on the surface of the continuous SiC fiber yarns through a binder.

In various embodiments of the present invention, the metallic material may be selected to be a high temperature alloy, a high entropy alloy, or a titanium alloy.

The continuous SiC fiber is used as a modified material, and the mass percentage of the continuous SiC fiber and the metal matrix fiber is 25-28%.

Preferably, the binder is polyvinylidene fluoride (PDVF), which is a sintering removable material. In other embodiments, other types of adhesive materials may also be employed.

According to the disclosed example, the invention exemplarily provides a method for preparing the continuous SiC fiber reinforced metal matrix fiber wire, and FIGS. 1 and 2 are schematic diagrams of equipment for preparing the fiber wire.

The exemplary fiber filament preparation apparatus shown in FIGS. 1 and 2 includes a base plate 1 as a mounting base of the entire apparatus, which is horizontally mounted on the ground. On one side of the base plate 1 a first support 2, in particular a stable triangular support, is mounted, on the top of which a first roller 3 is arranged which can be driven. The first drum is wound with continuous SiC fiber filaments as a prepreg continuous SiC fiber material 4.

The first diverting wheel 5 is arranged at the side of the first drum 3, at the side of the adhesion groove 9. The aforementioned adhesion groove 9 is provided substantially at the center of the substrate 1.

A mixture of a binder and metal powder is placed at the bottom of the adhesion tank 9, a heating device 8 is arranged at the bottom of the adhesion tank, the mixture is heated, the temperature is regulated to be within a preset range, a molten mixture of a binder solution and the metal powder is formed, and a molten pool is prepared. In the embodiment of the present invention, it is preferable to use 190 ℃ to 300 ℃.

Preferably, the heating device 8 is preferably a heating device in the shape of a serpentine pipe, and is fixed on the base plate 1 for heating the adhesive in the adhesion groove to maintain the temperature within the adhesion temperature range, and the serpentine pipe is used for facilitating uniform heating in the adhesion groove.

In the preferred embodiment, a temperature sensing device, such as a thermocouple sensing element, is also disposed in the adhesion tank 9 to sense the temperature of the molten bath for precise temperature control, and can be characterized by a temperature feedback device, such as the illustrated temperature display element 7, to facilitate visual observation for proper adjustment. In another embodiment, the temperature detection result can be fed back to the control system to perform automatic temperature control adjustment.

Referring to fig. 1, a protective gas inlet 6 is further disposed in the adhesion tank for introducing an inert gas protector such as argon into the adhesion tank to form a blanket modified environment protected by atmosphere.

In an alternative embodiment, the adhesive channel is constructed as a box structure, preferably rectangular parallelepiped, with a cover on top. And introducing inert gas (such as argon) to protect the modified environment.

Under the action of the first diverting wheel 5, the continuous silicon carbide fiber yarn wound on the first roller is fed into an adhesion groove, for example, at the same side as the first diverting wheel 5, the bottom of the adhesion groove is provided with a fiber yarn inlet, the continuous silicon carbide fiber yarn is fed into the adhesion groove for modification, and a layer of molten mixture of adhesive and metal powder is adhered on the surface of the continuous silicon carbide fiber yarn.

The opposite side of the bottom of the adhering tank is provided with a fiber yarn outlet, and a cooling device 10, such as an air cooling device or a water cooling device, is arranged outside the outlet to cool the modified continuous SiC fiber yarn 12 with the adhesive layer of the adhesive and the metal powder, and then the modified continuous SiC fiber yarn passes through a second direction-changing wheel 11 and is wound on a second drum to form a fiber roll, as shown in fig. 2.

Preferably, as shown in connection with fig. 1, the cooling device 10 has a cooling channel along the conveying direction of the fiber filaments, so that the modified fiber filaments are continuously cooled in the cooling channel.

In an embodiment of the present invention, the metal powder and the binder in the adhesion groove may be configured by a combination of the foregoing mixture ratio and components.

In an exemplary use, as shown in fig. 1, the preparation process of the continuous SiC fiber reinforced metal matrix fiber wire includes the following steps:

Preferably, the binder is polyvinylidene fluoride, and the adhesion temperature is 190-300 ℃.

Wherein, in an optional embodiment, the foregoing method further comprises the steps of:

On the basis of the prepared continuous SiC fiber, the embodiment disclosed by the invention also provides a preparation method of the continuous silicon carbide fiber reinforced metal matrix composite, which comprises the following steps:

and 4, carrying out secondary sintering on the blank without the binder to obtain the compact continuous SiC fiber reinforced metal matrix composite material, thereby realizing the reinforcement of toughness and strength.

Preferably, the sintering shrinkage of the secondary sintering is controlled to be 10-25%. A

In the following, an example of printing is performed in conjunction with a composite additive manufacturing printing apparatus shown in fig. 3, where the meaning of each reference number in the figure is as follows:

reference numeral 20 denotes guide rollers for guiding and straightening processes during the feeding of the wire.

Reference numeral 30 denotes a resistor.

Reference numeral 12 denotes the modified continuous silicon carbide metal-based fiber filament.

Reference numeral 100 denotes a blank obtained after printing.

[ EXAMPLE 1 ]

(1) Referring to fig. 1, under the protection of inert gas, a mixture of metal powder of TC4 titanium alloy (Ti-6Al-4V) and a binder is loaded, and the binder is heated to melt the binder, so as to form a molten mixture of the metal powder and the binder. Wherein the binder accounts for 1 percent of the mass of the molten mixture. The temperature is adjusted to control the adhesion temperature at 190 ℃ and 200 ℃.

(2) The prepreg continuous SiC fiber 4 is sent to a modified environment of an adhesion groove 9 through a first bend wheel 5, and under the action of a binder, a layer of molten mixture of the binder and Ti-6Al-4V titanium alloy powder is adhered to a fiber material in the moving process, namely an adhesive layer of a binder solution and the titanium alloy powder is formed on the surface of the continuous SiC fiber.

(3) The continuous SiC fiber material with the adhesive and the Ti-6Al-4V adhesive layer is conveyed to the outside of the adhesive tank, cooled by a cooling device 10 and wound on a second roller 13 to form a titanium alloy continuous SiC fiber roll.

(4) And loading the titanium alloy continuous SiC fiber roll on printing equipment, conveying the modified continuous SiC fiber titanium alloy combination wire to a specified position by using a wire feeding mechanism, and printing layer by layer according to a preset printing path to form a blank shown in FIG. 4.

(5) The printed blank was freed of binder at a temperature of 300 ℃.

(6) And (3) placing the blank without the binder into a heating furnace for secondary sintering at 800 ℃ to form the continuous SiC fiber titanium alloy composite material, as shown in figure 5.

In the continuous SiC fiber titanium alloy composite material, the content of SiC fibers accounts for 26% of the weight of the whole SiC fiber titanium alloy composite material.

The process conditions in the preparation method are controlled as follows:

in the step (3), the cooling time is 10 s.

In the step (4), the resistance heating power is 100-.

In the step (4), the lapping rate is 40-50%.

In the step (4), during printing, the preheating temperature of the bottom plate is 10-60 ℃, the printing temperature is 100-300 ℃, and the height of a printing layer is 0.3-0.9 mm.

In the step (6), the sintering temperature is 800 ℃, and the sintering pressure is 5-10 MPa.

In the step (6), the sintering shrinkage rate is 15-20%.

[ EXAMPLE 2 ]

(1) Referring to fig. 1, under the protection of inert gas, a mixture of metal powder of aluminum alloy (such as high temperature alloy Al-Si-Fe-0.1Cu) and a binder is loaded, and the binder is heated to melt the binder, so as to form a molten mixture of the aluminum alloy powder and the binder, wherein the binder accounts for 3% of the molten mixture by mass. The temperature is adjusted to control the adhesion temperature at 210-300 ℃.

(2) The presoaked continuous SiC fiber yarns are sent to a modified environment of an adhesion groove 9 through a first bend wheel 5, and under the action of an adhesive, a layer of molten mixture of an adhesive solution and aluminum alloy is adhered to a fiber material in the moving process, namely, an adhesive layer of the adhesive solution and aluminum alloy powder is formed on the surface of the continuous SiC fiber.

(3) And conveying the continuous SiC fiber material with the adhesive and the Al-Si-Fe-0.1Cu adhesive layer to the outside of the adhesive tank, cooling by a cooling device 10, and winding on a second roller 13 to form the aluminum alloy continuous SiC fiber roll.

(4) And placing the aluminum alloy continuous SiC fiber roll on a printer, conveying the continuous SiC fiber aluminum alloy combination wire to a specified position by using a wire feeding mechanism, and printing layer by layer according to a preset printing path to form a blank.

(5) The binder of the blank formed by printing is removed, and the temperature is 400 ℃.

(6) And sintering the blank without the binder in a heating furnace to form the continuous SiC fiber aluminum alloy composite material.

In the continuous SiC fiber aluminum alloy composite of the present example, the SiC fiber content accounts for 25% of the total SiC fiber aluminum alloy weight.

Preferably, the aluminum alloy has a Cu content of 0.1 in the entire aluminum alloy powder.

Preferably, the process conditions in the preparation method are controlled as follows:

in the step (3), the cooling time is 10 s.

In the step (4), the resistance heating power is 110W-450W, and the wire feeding speed is 50-400 mm/min

In the step (4), the lapping rate is 40 to 50 percent

In the step (4), the temperature of the bottom plate is 10-60 ℃, the printing temperature is 100-290 ℃, and the height of the printing layer is 0.3-0.9 mm.

In the step (6), the sintering temperature is 800-850 ℃, and the sintering pressure is 5-10MPa

In the step (6), the sintering shrinkage rate is 15 to 22 percent

[ EXAMPLE 3 ]

(1) Referring to FIG. 1, under the protection of inert gas, a mixture of high entropy alloy (Fe-Mn-Co-Cr-Ni) metal powder and a binder is loaded, and the binder is heated and melted to form a molten mixture of the high entropy alloy powder and the binder, wherein the binder accounts for 5% of the molten mixture by mass. The temperature is adjusted to control the adhesion temperature between 260 ℃ and 300 ℃.

(2) The presoaked continuous SiC fiber yarns are sent to a modification environment of an adhesion groove through a first bend wheel, and a layer of molten mixture of a binder solution and Fe-Mn-Co-Cr-Ni high-entropy alloy is adhered to a fiber material in the motion process under the action of a binder, namely an adhesion layer of the binder solution and high-entropy alloy powder is formed on the surface of the continuous SiC fiber.

(3) The combination of continuous SiC fiber material with binder and Fe-Mn-Co-Cr-Ni adhesive layer is transported out of the adhesive bath, cooled by cooling device 10 and wound on second drum 13 to form a high entropy alloy continuous SiC fiber roll.

(4) And (3) placing the high-entropy alloy continuous SiC fiber roll in a printer, conveying the continuous SiC fiber high-entropy alloy combination wire to a specified position by using a wire feeding mechanism, and printing layer by layer according to a preset printing path to form a blank.

(5) The printed blank is freed from the binder at a temperature of 400 ℃ and 500 ℃.

(6) And sintering the blank without the binder in a heating furnace to form the continuous SiC fiber high-entropy alloy composite material.

In the continuous SiC fiber high-entropy alloy composite material of the present example, the content of the SiC fiber accounts for 28% of the weight of the whole SiC fiber high-entropy alloy.

In the high-entropy alloy of the present example, the content of Mn is 0.4 to 1.0% of the entire aluminum alloy powder.

in the step (3), the cooling time is 10 s.

In the step (4), the resistance heating power is 120W-500W, and the wire feeding speed is 50-400 mm/min

In the step (4), the lapping rate is 40 to 50 percent

In the step (4), the temperature of the bottom plate is 10-60 ℃, the printing temperature is 110-320 ℃, and the height of the printing layer is 0.3-0.9 mm.

In the step (6), the sintering temperature is 880-1000 ℃, and the sintering pressure is 5-10MPa

In the step (6), the sintering shrinkage rate is 15-20%.

Fig. 1 below shows the results of mechanical property tests of the composite material prepared in the above three examples.

TABLE 1 mechanical Properties

As can be seen from the above table, the continuous SiC fiber metal matrix composite prepared by the invention has the advantages that:

(1) compared with metal per se, the yield strength, the tensile strength and the elongation of the continuous SiC fiber metal are greatly improved. The continuous SiC fiber has high strength and good toughness, and when different metal powder is coated on the surface of the continuous SiC fiber, the surface carbonization of the continuous SiC fiber can be prevented, and the strength and the toughness are improved simultaneously. In addition, the continuous SiC fiber has good creep resistance, and the service life of the material is prolonged;

2) the preparation of the continuous SiC fiber metal matrix composite material has the advantages of low cost, simple process and energy conservation. The prepared composite material is high temperature resistant and corrosion resistant: as high temperature resistant materials, can be used as a conveyor belt for conveying high temperature substances, a heat resistant curtain for metal refining, rolling, welding and other operations, a metal melt filter and a heat insulating material, a catalyst carrier in the exhaust treatment of the automobile industry, a burner nozzle of a combustion apparatus and the like; as a corrosion-resistant material, the material can be used for coatings, organism structural materials, marine defense engineering and the like in the field of navigation; the fiber-reinforced metal material can be used as a structural material of an engine body, a structural part, an engine part, a peripheral part and a fan blade in the fields of aerospace, aviation, automobile industry and the like.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. The continuous SiC fiber reinforced metal matrix fiber wire is characterized in that metal powder is used as a substrate, and a continuous SiC fiber wire is added into the substrate to form the continuous SiC fiber reinforced metal matrix fiber wire, wherein the metal powder is coated on the surface of the continuous SiC fiber wire through an adhesive, and the mass percentage of the continuous SiC fiber wire and the metal matrix fiber wire is 25% -28%.

2. The continuous SiC fiber reinforced metal matrix fiber wire of claim 1, wherein the binder is polyvinylidene fluoride.

3. A method for producing a continuous SiC fiber reinforced metal matrix fiber wire according to claim 1, comprising the steps of:

step 2, conveying the continuous SiC fiber filaments into a molten pool filled with a molten mixture of a binder and metal powder through a filament feeding mechanism; under the action of the binder, a layer of molten mixture of the binder and the metal powder is adhered to the surface of the continuous SiC fiber yarn in the movement process, namely an adhesive layer of the binder and the metal powder is formed on the surface of the continuous SiC fiber yarn;

and 3, conveying the continuous SiC fiber wires with the adhesive layers of the adhesive and the metal powder to the outside of the molten pool through a wire feeding mechanism, and cooling by using a cooling device to form a continuous SiC fiber metal combination.

4. The method for preparing a continuous SiC fiber reinforced metal matrix fiber wire according to claim 3, further comprising the steps of:

5. The method for preparing a continuous SiC fiber reinforced metal matrix fiber wire according to claim 3, wherein the adhesion layer is 1 layer.

6. A preparation method of a continuous SiC fiber reinforced metal matrix composite material is characterized by comprising the following steps:

7. The method for preparing a continuous SiC fiber reinforced metal matrix composite according to claim 6, wherein the sintering temperature of the primary sintering of the step 3 is 300-500 ℃.

8. The method for preparing the continuous SiC fiber reinforced metal matrix composite material as claimed in claim 6, wherein the secondary sintering is carried out at a sintering temperature of 800-1000 ℃ and a pressure of 5-10 MPa.

9. The method for preparing the continuous SiC fiber reinforced metal matrix composite material according to any one of claims 6 to 8, wherein the secondary sintering is performed, and the sintering shrinkage is controlled to be 10-25%.

10. A continuous SiC fiber reinforced metal matrix composite material prepared according to the preparation method of any one of claims 6 to 9.