A fiber-reinforced metal composite component and a method for manufacturing the same

Abstract

The present invention discloses a fiber-reinforced metal composite component and a manufacturing method thereof, comprising: a metal substrate, a plurality of grooves at a preset angle to the horizontal direction are arranged on the metal substrate, and the plurality of grooves are filled with fiber materials. The present invention is based on the characteristics that the deformation of the metal material increases at the place where necking occurs, but the tensile bearing capacity decreases, while the bearing capacity of the fiber material increases with the increase of its tensile deformation, and the fiber material in the plurality of grooves at the preset angles and the metal jointly bear the role of tension. At the place where necking occurs, the bearing capacity of the fiber material is enhanced to compensate for the decrease in the bearing capacity of the metal material, thereby avoiding the occurrence of necking or necking in multiple places, avoiding the metal composite component from being locally necked and broken at one position, and improving the deformation capacity of the metal composite component.

Description

Technical Field

[0001] The present invention relates to the technical field of composite materials, and in particular to a fiber-reinforced metal composite component and a manufacturing method thereof. Background Art

[0002] Metal materials refer to a general term for materials with metallic properties that are composed of metal elements or mainly composed of metal elements, including pure metals, alloys, intermetallic compounds and special metal materials. Metal materials have become indispensable basic materials and important strategic materials for the national economy, people's daily life, national defense work, and scientific and technological development due to their characteristics such as high temperature resistance, corrosion resistance, and high ductility.

[0003] Necking refers to the phenomenon that the local cross-sectional reduction of a material occurs under the action of tensile stress. Due to the slight difference in the effective cross-sectional area, existing metal materials are prone to necking and breaking at local locations when subjected to tensile stress.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a fiber-reinforced metal composite component and a manufacturing method thereof in view of the above-mentioned defects of the prior art, aiming to solve the problem that the existing metal materials are prone to necking and breaking at local positions when subjected to tensile stress.

[0006] The technical solution adopted by the present invention to solve the problem is as follows:

[0007] In a first aspect, an embodiment of the present invention provides a fiber-reinforced metal composite component, characterized in that it includes: a metal substrate, on which a plurality of grooves having a preset angle with the horizontal direction are arranged, and the plurality of grooves are filled with fiber material.

[0008] The fiber-reinforced metal composite component, wherein the preset angle is 15° to 60° or 120° to 165°.

[0009] The fiber-reinforced metal composite component, wherein the ultimate strain of the fiber material is 1% to 15%.

[0010] In the fiber-reinforced metal composite component, several of the grooves have the same shape, and the cross-sectional shape of several of the grooves is circular, square or rectangular.

[0011] The fiber-reinforced metal composite component, wherein a plurality of the grooves are arranged on the surface of the metal substrate, and the plurality of the grooves are arranged at equal intervals along the long axis direction of the metal substrate.

[0012] The fiber-reinforced metal composite component, wherein a plurality of the grooves are arranged inside the metal matrix.

[0013] The fiber-reinforced metal composite component, wherein the preset angle, the amount of fiber material and the fiber material stiffness satisfy the formula:

[0014] in,

[0015]

[0016]

[0017] α is the preset angle, A frp is the amount of fiber material, E frp is the elastic modulus of the fiber material, A metal is the initial cross-sectional area of ​​the metal matrix, r p0 is the distance from the center of the metal matrix to the center of the fiber material, r b0 is the radius of the metal matrix, ε y，fracture , σ local (ε y，fracture ) and E hardening Determined by the local engineering stress-strain curve of the necking section corresponding to the metal matrix, ε y，fracture is the local axial fracture strain at the necking point, σ local (ε y，fracture ) is the axial fracture strain ε at the necking point y，fracture The corresponding local stress in the cross section, E hardening is the slope of the strengthening section of the local engineering stress-strain curve of the necked section.

[0018] In a second aspect, an embodiment of the present invention provides a method for manufacturing the fiber-reinforced metal composite component as described above, comprising:

[0019] A plurality of grooves are formed on the metal substrate at a preset angle to the horizontal direction, and a fiber material is selected that satisfies a predetermined fiber material elastic modulus;

[0020] A predetermined amount of the fiber material is filled into a plurality of the grooves to obtain a fiber-reinforced metal composite component.

[0021] The method for manufacturing a fiber-reinforced metal composite component, wherein before the step of providing a plurality of grooves at a preset angle to the horizontal direction on the metal substrate, the method comprises:

[0022] Obtaining a local engineering stress-strain curve of a necked section corresponding to the metal matrix, and determining an axial fracture strain at the necking location, a local stress of the section corresponding to the axial fracture strain at the necking location, and a slope of a strengthening section of the local engineering stress-strain curve of the necked section according to the local engineering stress-strain curve of the necked section;

[0023] The initial cross-sectional area of ​​the metal matrix is ​​obtained, and the elastic modulus of the fiber material, the preset angle and the amount of the fiber material are determined according to the initial cross-sectional area, the axial fracture strain at the necking point, the local stress of the cross section and the slope of the reinforcement section; wherein the elastic modulus of the fiber material, the preset angle and the amount of the fiber material are determined by the formula:

[0024] in,

[0025]

[0026]

[0027] α is the preset angle, A frp is the amount of fiber material, E frp is the elastic modulus of the fiber material, A metal is the initial cross-sectional area of ​​the metal matrix, r p0 is the distance from the center of the metal matrix to the center of the fiber material, r b0 is the radius of the metal matrix, ε y，fracture , σ local (ε y，fracture ) and E hardening Determined by the local engineering stress-strain curve of the necking section corresponding to the metal matrix, ε y，fracture is the local axial fracture strain at the necking point, σ local (ε y，fracture ) is the axial fracture strain ε at the necking point y，fracture The corresponding local stress in the cross section, E hardening is the slope of the strengthening section of the local engineering stress-strain curve of the necked section.

[0028] The method for manufacturing a fiber-reinforced metal composite component, wherein the step of filling the plurality of grooves with a certain amount of the fiber material comprises:

[0029] The surfaces of the plurality of grooves and / or the metal substrate are subjected to sandblasting treatment.

[0030] Beneficial effects of the present invention: The metal composite component of the present invention jointly bears the tensile stress through the fiber materials in several grooves with preset angles, thereby avoiding local necking or necking of the entire metal composite component at different positions, avoiding local necking and fracture of the metal composite material at one position, and improving the deformation capacity of the metal composite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 is a schematic structural diagram of a fiber-reinforced metal composite component provided by an embodiment of the present invention;

[0033] Figure 2 is a local engineering stress-strain curve diagram of a necked cross section corresponding to a metal matrix provided by an embodiment of the present invention;

[0034] Figure 3 It is a side view of a fiber-reinforced metal composite component when a plurality of grooves provided by an embodiment of the present invention are arranged inside a metal matrix;

[0035] Figure 4 is a stress-strain curve diagram of the metal composite components provided in Example 1 and Example 2 of the present invention.

[0036] The marks in the accompanying drawings are: 1, metal substrate; 2, groove; 11, first metal component; 12, second metal component; 13, third metal component; 14, fourth metal component; 15, fifth metal component. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] Necking refers to the phenomenon that a material undergoes a local cross-sectional reduction under tensile stress. Due to the slight difference in effective cross-sectional area, existing metal materials are prone to necking at local locations and then breaking when subjected to tensile stress, that is, the existing metal materials have poor deformation resistance. In order to improve the strength of metal materials, existing methods directly wrap carbon fiber reinforced composite materials (CFRP) or glass fiber reinforced plastics (GFRP) on the outer surface of metal materials. Although this method can improve the strength of the entire metal material, when the fiber material is stretched to the limit strain of the fiber material, the fiber material outside the metal material will break. The destruction of the metal material is determined by the fiber material. Although the strength of the metal material is improved, the ductility of the metal material is not improved.

[0040] In order to solve the problems of the prior art, this embodiment provides a fiber-reinforced metal composite component, such as Figure 1 As shown, the metal composite component comprises: a metal matrix 1, on which a plurality of grooves 2 are provided at a preset angle to the horizontal direction, and a plurality of the grooves 2 are filled with fiber materials. The present invention is based on the characteristics that the deformation of the metal material increases at the place where the necking occurs, but the tensile bearing capacity decreases, while the bearing capacity of the fiber material increases with the increase of its tensile deformation. The fiber material in the plurality of grooves at the preset angles and the metal jointly bear the tensile force. At the place where the necking occurs, the bearing capacity of the fiber material is enhanced to compensate for the decrease in the bearing capacity of the metal material, thereby avoiding the occurrence of necking or necking at multiple locations, avoiding the metal composite component from being locally necked and broken at one location, and improving the deformation capacity of the metal composite component.

[0041] In a specific implementation, the preset angle, the amount of fiber material, and the elastic modulus of the fiber material satisfy the formula:

[0042] in,

[0043]

[0044]

[0045] α is the preset angle, A frp is the amount of fiber material, E frp is the elastic modulus of the fiber material, A metal is the initial cross-sectional area of ​​the metal matrix, r p0 is the distance from the center of the metal matrix to the center of the fiber material, r b0 is the radius of the metal matrix (e.g. Figure 3 shown), ε y，fracture, σ local (ε y，fracture ) and E hardening Determined by the local engineering stress-strain curve of the necking section corresponding to the metal matrix, ε y，fracture is the local axial fracture strain at the necking point, σ local (ε y，fracture ) is the axial fracture strain ε at the necking point y，fracture The corresponding local stress in the cross section, E hardening is the slope of the strengthening section of the local engineering stress-strain curve of the necked section. Figure 2 As shown in the figure, it is a local engineering stress-strain curve diagram of the necking section corresponding to the metal matrix 1. The ε in the above formula is y，fracture , σ local (ε y，fracture ) and E hardening It can be determined from the local engineering stress-strain curve of the necked section of the metal substrate 1. For a metal substrate 1 of known material and shape, the initial cross-sectional area A metal , axial fracture strain at necking ε y，fracture , local stress in section σ local (ε y，fracture ) and the slope of the enhanced segment E hardening All are known, and the elastic modulus E of the fiber material can be determined according to the above formula frp , preset angle α, and fiber material amount A frp In this embodiment, since a plurality of grooves 2 are provided on the metal substrate 1 at a preset angle to the horizontal direction, and fiber materials are filled in the plurality of grooves 2, when the metal composite component is subjected to tensile stress and produces necking, the fiber materials in the plurality of grooves 2 at the preset angles jointly bear the tensile stress, thereby avoiding necking or causing the entire metal composite component to neck at different positions, thereby avoiding local necking and fracture of the metal composite material at one position, and improving the deformation resistance of the metal composite material.

[0046] In a specific implementation, the initial cross-sectional area A of the metal substrate 1 is metal It refers to the cross-sectional area of ​​the metal substrate 1 when it is not subjected to tensile stress, which is related to the initial cross-sectional shape of the metal substrate 1. For example, when the initial cross-sectional shape of the metal substrate 1 is circular, the initial cross-sectional area A metal is the area of ​​a circle. When the initial cross-sectional shape of the metal substrate 1 is a rectangle or a square, the initial cross-sectional area A metal is the area of ​​a rectangle or square.

[0047] Continue to refer to Figure 1As shown, a plurality of the grooves 2 are arranged on the surface of the metal substrate 1, and the plurality of the grooves 2 are arranged at equal intervals along the long axis direction of the metal substrate 1, and the preset angle α is the angle between the long axis direction of each of the grooves 2 and the horizontal direction, and the preset angle α between each of the grooves 2 and the horizontal direction is 15° to 60° or 120° to 165°, and the preset angle α between each of the grooves 2 and the horizontal direction can be the same, for example, the preset angle α between each of the grooves 2 and the horizontal direction is 30°, 35° or 45°, etc.; the preset angle α between each of the grooves 2 and the horizontal direction can also be different, for example, three grooves 2 are arranged on the metal substrate 1, the preset angle α between one groove 2 and the horizontal direction is 30°, the preset angle α between another groove 2 and the horizontal direction is 35°, and the preset angle α between another groove 2 and the horizontal direction is 45°, or the preset angle α between two of the grooves 2 and the horizontal direction is 30°, and the preset angle α between the other groove 2 and the horizontal direction is 35°. By setting the angles between the plurality of grooves 2 and the horizontal direction within this range, when the metal composite material is subjected to tensile stress, the fiber materials in the plurality of grooves 2 can jointly bear the tensile stress, thereby avoiding necking or causing the entire metal composite component to neck at different positions, thereby avoiding the metal composite material from locally necking at one position and breaking.

[0048] Reference Figure 3 As shown, in another embodiment of the present invention, a plurality of the grooves 2 are arranged inside the metal matrix 1, and a plurality of the grooves 2 are arranged through one end of the metal matrix 1. When the fiber material is filled, the fiber material is inserted into the plurality of grooves along one end of the metal matrix 1. When the metal composite component is subjected to tensile stress and necks, the fiber materials in the plurality of grooves 2 with preset angles jointly bear the tensile stress, thereby preventing the metal composite material from necking locally at one position and breaking, thereby improving the deformation resistance of the metal composite material.

[0049] In a specific embodiment, the shapes of the plurality of grooves 2 can be set as needed, the cross-sectional shapes of the plurality of grooves 2 can be circular, square or rectangular, the opening width of each of the grooves 2 is 2.5 to 3.0 mm, and the surfaces of the plurality of grooves 2 in contact with the fiber material are sandblasted. By setting the opening width of the groove 2 within this range and providing a sandblasting layer on the contact surface between the groove 2 and the fiber material, the bonding between the fiber material and the plurality of grooves 2 can be made stronger, thereby preventing the fiber material from slipping out of the groove 2.

[0050] In a specific embodiment, the volume of the fiber material filled in each groove 2 is equal to the volume of each groove 2, that is, a number of grooves 2 are completely filled with the fiber material, and the sum of the volumes of each groove 2 is 35% to 55% of the volume of the metal matrix 1. The elastic modulus of the fiber material is 8 to 20 GPa, and the ultimate strain of the fiber material is 1% to 15%. By matching the preset angle with the fiber material that meets the elastic modulus and ultimate strain, the deformation of the necking area can be limited, so that necking occurs at multiple locations on the entire metal composite component, and the metal composite material is prevented from being locally necked and broken at one location.

[0051] Continue to refer to Figure 1 As shown, the metal substrate 1 can be a pure metal, an alloy, an intermetallic compound, a special metal material, etc. The metal substrate 1 can be a circular rib material or a plate material. The metal substrate 1 includes a first metal component 11, a second metal component 12, a third metal component 13, a fourth metal component 14, and a fifth metal component 15. The second metal component 12, the third metal component 13, the fourth metal component 14, and the fifth metal component 15 are all set to two. The two second metal components 12 are respectively connected to the two ends of the first metal component 11, and the two third metal components 13 are respectively connected to the two second metal components 11. The first metal component 11 is connected to the second metal component 12, the two fourth metal components 14 are connected to the two third metal components 13, and the two fifth metal components 15 are connected to the two fourth metal components 14, respectively. The cross section of the first metal component 11 is rectangular, and the vertical cross section of the second metal component 12 is trapezoidal, the upper base of the trapezoid is connected to the first metal component 11, and the lower base of the trapezoid is connected to the third metal component 13. The cross section of the third metal component 13 is rectangular, and a plurality of grooves 2 are arranged on the first metal component 11, the second metal component 12 and the third metal component 13. The outer surface of the fourth metal component 14 is concave in the long axis direction of the metal substrate, and the cross section of the fifth metal component 15 is rectangular. The fiber materials in the plurality of grooves 2 can be anchored by the fourth metal component 14.

[0052] In a specific embodiment, the length ratio of the first metal component 11, the second metal component 12, the third metal component 13, the fourth metal component 14 and the fifth metal component 15 along the long axis direction of the metal substrate is 100:20:4:4:62. For example, the length of the first metal component 11 along the long axis direction of the metal substrate is 100 mm, the length of the second metal component 12 along the long axis direction of the metal substrate is 20 mm, the length of the third metal component 13 along the long axis direction of the metal substrate is 4 mm, the length of the fourth metal component 14 along the long axis direction of the metal substrate is 4 mm, and the length of the fifth metal component 15 along the long axis direction of the metal substrate is 62 mm.

[0053] Based on the above fiber-reinforced metal composite component, the present invention also proposes a method for manufacturing a fiber-reinforced metal composite component, the method comprising:

[0054] Step S100, a plurality of grooves are formed on the metal substrate at a preset angle to the horizontal direction, and a fiber material that meets a predetermined fiber material elastic modulus is selected;

[0055] Step S200: Filling a predetermined amount of the fiber material into a plurality of the grooves to obtain a fiber-reinforced metal composite component.

[0056] Specifically, in order to manufacture the above-mentioned fiber-reinforced metal composite component, in this embodiment, a plurality of grooves at a preset angle to the horizontal direction are firstly provided on the metal substrate, and a fiber material satisfying the elastic modulus of the fiber material is selected, and then the fiber material is filled in the plurality of grooves to obtain the fiber-reinforced metal composite component. In this embodiment, since a plurality of grooves at a preset angle to the horizontal direction are provided on the metal substrate, and the fiber material is filled in the plurality of grooves, when the metal composite component is subjected to tensile stress and produces necking, the fiber material in the plurality of grooves at the preset angles jointly bears the tensile stress, thereby avoiding necking or allowing the entire metal composite component to neck at different positions, avoiding the metal composite material from necking locally at one position and breaking, and improving the deformation resistance of the metal composite material.

[0057] In a specific implementation manner, before step S100, the method further includes:

[0058] Step M100, obtaining a local engineering stress-strain curve of a necked section corresponding to the metal matrix, and determining an axial fracture strain at the necking location, a local stress of the section corresponding to the axial fracture strain at the necking location, and a slope of a strengthening section of the local engineering stress-strain curve of the necked section according to the local engineering stress-strain curve of the necked section;

[0059] Step M200, obtaining the initial cross-sectional area of ​​the metal matrix, and determining the elastic modulus of the fiber material, the preset angle, and the amount of the fiber material according to the initial cross-sectional area, the axial fracture strain at the necking point, the local stress of the cross section, and the slope of the reinforcement section; wherein the elastic modulus of the fiber material, the preset angle, and the amount of the fiber material are determined by the formula:

[0060] in,

[0061]

[0062]

[0063]

[0064] α is the preset angle, A frp is the amount of fiber material, E frp is the elastic modulus of the fiber material, A metal is the initial cross-sectional area of ​​the metal matrix, r p0 is the distance from the center of the metal matrix to the center of the fiber material, r b0 is the radius of the metal matrix, ε y，fracture , σ local (ε y，fracture ) and E hardening Determined by the local engineering stress-strain curve of the necking section corresponding to the metal matrix, ε y，fracture is the local axial fracture strain at the necking point, σ local (ε y，fracture ) is the axial fracture strain ε at the necking point y，fracture The corresponding local stress in the cross section, E hardening is the slope of the strengthening section of the local engineering stress-strain curve of the necked section.

[0065] In this embodiment, when constructing a metal composite component, firstly, a metal matrix to be reinforced is selected, and the axial fracture strain at the necking point, the local stress of the cross section corresponding to the axial fracture strain at the necking point, and the slope of the reinforcement section of the local engineering stress-strain curve of the necking section are determined according to the local engineering stress-strain curve of the necking section corresponding to the metal matrix. Figure 2 As shown in the figure, it is the local engineering stress-strain curve of the necking section corresponding to the metal matrix, and the axial fracture strain ε y，fracture It refers to the axial fracture strain of the local axial part of the necking, and the axial fracture strain at the necking ε y，fracture The corresponding cross-sectional local stress σ local (ε y，fracture ) refers to the axial fracture strain ε of the metal matrix at the necking point y，fracture The local stress of the cross section under y，fracture, σ local (ε y，fracture ) and the slope E of the strengthening section of the local engineering stress-strain curve of the necked section hardening It can be determined from the local engineering stress-strain curve of the necked section corresponding to the metal matrix.

[0066] After determining the axial fracture strain at the necking, the local stress of the cross section, and the slope of the reinforcement section, the initial cross-sectional area of ​​the metal matrix is ​​further obtained, and the elastic modulus of the fiber material, the preset angle, and the amount of the fiber material are determined according to the initial cross-sectional area, the axial fracture strain at the necking, the local stress of the cross section, and the slope of the reinforcement section; wherein the elastic modulus of the fiber material, the preset angle, and the amount of the fiber material are determined by the formula:

[0067] in,

[0068]

[0069]

[0070] α is the preset angle, A frp is the amount of fiber material, E frp is the elastic modulus of the fiber material, A metal is the initial cross-sectional area of ​​the metal matrix, r p0 is the distance from the center of the metal matrix to the center of the fiber material, r b0 is the radius of the metal matrix, ε y，fracture , σ local (ε y，fracture ) and E hardening Determined by the local engineering stress-strain curve of the necking section corresponding to the metal matrix, ε y，fracture is the local axial fracture strain at the necking point, σ local (ε y，fracture ) is the axial fracture strain ε at the necking point y，fracture The corresponding local stress in the cross section, E hardening is the slope of the strengthening section of the local engineering stress-strain curve of the necked section.

[0071] After determining the elastic modulus of the fiber material, the preset angle and the amount of fiber material, a plurality of grooves are opened on the metal substrate according to the preset angles, and fiber materials satisfying the fiber material amount and the elastic modulus of the fiber material are filled in the plurality of grooves. The fiber materials in the plurality of grooves are then fixed to obtain a fiber-reinforced metal composite component.

[0072] In order to make the fiber material bond more firmly, in this embodiment, before the fiber material is filled in the plurality of grooves, the surface of the plurality of grooves and / or the metal substrate is sandblasted, and after the sandblasting, the fiber material is filled in the plurality of grooves and the fiber material is fixed. In a specific embodiment, glue can be used to fix the fiber material in the plurality of grooves, and the glue can be a construction type structural glue or an organic glue such as epoxy resin glue.

[0073] The present invention is further explained below by means of specific embodiments.

[0074] Example 1

[0075] A plurality of grooves with an angle of 45° to the horizontal direction are opened on the metal substrate, and a large strain fiber material (LRS-FRP) with an elastic modulus of 8 GPa and an ultimate strain of 10% is filled in the grooves to obtain a fiber-reinforced metal composite component 1.

[0076] Example 2

[0077] A plurality of grooves with an angle of 30° with respect to the horizontal direction are opened on the metal substrate, and the grooves are filled with a glass fiber material (GFRP) with an elastic modulus of 55 GPa and an ultimate strain of 3%, thereby obtaining a fiber-reinforced metal composite component 2.

[0078] The metal composite component 1, the metal composite component 2 and the metal matrix were subjected to a tensile test using a tensile testing machine. Figure 4 The stress-strain curve diagram, from Figure 4 It can be seen that the strength of the metal composite component 2 is significantly improved relative to the metal substrate, but its ductility is not changed, while the strength and ductility of the metal composite component 1 are significantly improved relative to the metal substrate.

[0079] In summary, the present invention discloses a fiber-reinforced metal composite component and a manufacturing method thereof, comprising: a metal substrate, a plurality of grooves at a preset angle to the horizontal direction are arranged on the metal substrate, and the plurality of grooves are filled with fiber materials. The present invention is based on the characteristics that the tensile bearing capacity of the metal material decreases as the deformation increases at the place where the necking occurs, while the bearing capacity of the fiber material increases with the increase of its tensile deformation. The fiber material in the plurality of grooves at the preset angles and the metal jointly bear the tensile force. At the place where the necking occurs, the bearing capacity of the fiber material is enhanced to compensate for the decrease in the bearing capacity of the metal material, thereby avoiding the occurrence of necking or necking at multiple locations, avoiding the metal composite component from being locally necked and broken at one location, and improving the deformation capacity of the metal composite component.

[0080] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A fiber-reinforced metal composite component, characterized in that: include: A metal substrate, wherein a plurality of grooves are provided on the metal substrate at a preset angle to the horizontal direction, and the plurality of grooves are filled with fiber materials; the fiber materials filled in the plurality of grooves must meet the determined fiber material dosage and fiber material stiffness requirements; The preset angle, fiber material dosage and fiber material stiffness satisfy the formula: in, α is the preset angle, A frp is the amount of fiber material, F frp is the elastic modulus of the fiber material, A metal is the initial cross-sectional area of ​​the metal matrix ， r p0 is the distance from the center of the metal matrix to the center of the fiber material, r b0 is the radius of the metal matrix, ε y，fracture , ε local (ε y，fracture ) and E hardening Determined by the local engineering stress-strain curve of the necking section corresponding to the metal matrix, ε y，fracture is the local axial fracture strain at the necking point, σ local (ε y，fracture ) is the axial fracture strain ε at the necking point y，fracture The corresponding cross-sectional local stress, E hardening is the slope of the strengthening section of the local engineering stress-strain curve of the necked section.

2. The fiber-reinforced metal composite component according to claim 1, characterized in that: The preset angle is 15° to 60° or 120° to 165°.

3. The fiber-reinforced metal composite component according to claim 1, characterized in that: The ultimate strain of the fiber material is 1% to 15%.

4. The fiber-reinforced metal composite component according to claim 1, characterized in that: The shapes of the plurality of grooves are the same, and the cross-sectional shapes of the plurality of grooves are circular, square or rectangular.

5. The fiber-reinforced metal composite component according to claim 1, characterized in that: A plurality of the grooves are arranged on the surface of the metal substrate, and the plurality of the grooves are arranged at equal intervals along the long axis direction of the metal substrate.

6. The fiber-reinforced metal composite component according to claim 1, characterized in that: A plurality of grooves are arranged inside the metal substrate.

7. A method for manufacturing a fiber-reinforced metal composite component according to any one of claims 1 to 6, characterized in that: include: A plurality of grooves are formed on the metal substrate at a preset angle to the horizontal direction, and a fiber material is selected that satisfies a predetermined fiber material elastic modulus; Filling a predetermined amount of the fiber material into a plurality of the grooves to obtain a fiber-reinforced metal composite component; The step of providing a plurality of grooves at a preset angle to the horizontal direction on the metal substrate includes: Obtaining a local engineering stress-strain curve of a necked section corresponding to the metal matrix, and determining an axial fracture strain at the necking location, a local stress of the section corresponding to the axial fracture strain at the necking location, and a slope of a strengthening section of the local engineering stress-strain curve of the necked section according to the local engineering stress-strain curve of the necked section; The initial cross-sectional area of ​​the metal matrix is ​​obtained, and the elastic modulus of the fiber material, the preset angle and the amount of the fiber material are determined according to the initial cross-sectional area, the axial fracture strain at the necking point, the local stress of the cross section and the slope of the reinforcement section; wherein the elastic modulus of the fiber material, the preset angle and the amount of the fiber material are determined by the formula: in, α is the preset angle, A frp is the amount of fiber material, E frp is the elastic modulus of the fiber material, A metal is the initial cross-sectional area of ​​the metal matrix, r p0 is the distance from the center of the metal matrix to the center of the fiber material, r b0 is the radius of the metal matrix, ε y，fracture , σ local (ε y，fracture ) and E hardening Determined by the local engineering stress-strain curve of the necking section corresponding to the metal matrix, ε y，fracture is the local axial fracture strain at the necking point, σ local (ε y，fracture ) is the axial fracture strain ε at the necking point y，fracture The corresponding cross-sectional local stress, E hardening is the slope of the strengthening section of the local engineering stress-strain curve of the necked section.

8. The method for manufacturing a fiber-reinforced metal composite component according to claim 7, characterized in that: The step of filling the plurality of grooves with the fiber material in the amount of fiber material includes: The surfaces of the plurality of grooves and / or the metal substrate are subjected to sandblasting treatment.

Images