A method to improve the comprehensive performance of alloy materials based on the principle of "weaving injection molding"

Abstract

The present invention relates to the field of metal manufacturing, and specifically to a method for improving the comprehensive performance of alloy materials based on the principle of "weaving injection molding". The method comprises the following steps: 1) determining the alloy composition for plasticization and enhancement based on the service requirements of the alloy; 2) preparing an internal "woven" structure of the alloy for enhancing plasticity and a solid frame for forming, and placing the "woven" structure for enhancing plasticity at a predetermined position in the frame; 3) injecting materials for increasing strength and wear resistance into the solid frame; 4) subjecting the filled formed frame structure to a vacuum degassing treatment and welding and sealing; 5) performing hot isostatic pressing to prepare the required alloy material. The present invention enables formed alloys or components to have the characteristics of high strength, high plasticity, high wear resistance and low weight, breaking through the current technical bottleneck of improving the comprehensive performance of materials in the aerospace field, and promoting the further application of metal materials in the aerospace field.

Description

Technical Field

[0001] The present invention relates to the field of metal manufacturing, and in particular to a method for improving the comprehensive performance of alloy materials based on the "weaving injection" forming principle. Background Art

[0002] Metals have long played a vital role in the progress and development of human society, owing to their exceptional comprehensive mechanical, physical, and chemical properties unmatched by other engineering materials. With the rapid development of the national economy, higher demands have been placed on the performance of metals, particularly their mechanical properties such as strength and toughness. Improving the performance of metals by manipulating their microstructure has been a major focus of materials research over the past few decades, with various strengthening methods, including deformation strengthening, grain refinement, dispersion strengthening, and solid solution strengthening. However, while these methods increase strength, they also reduce plasticity and toughness, thus failing to meet the comprehensive performance requirements of metals demanded by today's industrial development. In most cases, the strength and toughness of metals exhibit an inverse relationship: "strength increases, plasticity / toughness decreases." This "win-lose" situation significantly hinders the practical application of new high-strength materials and has become a bottleneck in the development and application of metals. Consequently, facing society's ever-increasing demand for material multifunctionality, traditional methods for microstructural manipulation have reached their theoretical limits.

[0003] Some scholars have adopted new ideas and methods to solve the "inverted" relationship between material properties and achieve improved comprehensive performance. For example, the patent with publication number CN119082547A provides a high-strength and high-plasticity metastable β titanium alloy and its preparation method. This method is based on the new material design concept of the "entropy engineering" concept, which can play a local barrier role in the nucleation / growth process of SIMT / twinning, thereby increasing the critical excitation stress, and thus improving the problem of the compatibility of strength and plasticity of traditional metastable β titanium alloys. However, since this method is a new optimization of the alloy composition based on the existing metastable β titanium alloy, on the one hand, since the type of alloy composition has not changed, the final result can only achieve a good match between strength and plasticity, and has not reached the limit in terms of the single performance of the alloy; on the other hand, due to the development and design of the alloy composition, this leads to a large number of test iterations, high test time and economic costs, and is only applicable to this type of alloy, making it difficult to use on a large scale.

[0004] To address these issues, some researchers have employed gradient materials to optimize alloy properties. For example, patent publication number CN116005091A discloses a gradient titanium alloy with strong-ductility matching and a method for its preparation. This method successfully fabricates a gradient metal material with strong-ductility matching through explosive impact hardening combined with heat treatment. The resulting gradient metal material can be freely designed in size and offers advantages such as low cost, stable processability, good controllability, and high production efficiency. However, this method is complex, difficult, and dangerous to operate, and cannot achieve strong-ductility treatment on titanium alloys with complex structures. Furthermore, the optimization results only yield titanium alloys with good overall performance. Furthermore, current research focuses solely on the alloy's strong-ductility matching. Wear resistance is also crucial for the practical application of titanium alloys. During service, titanium alloy components inevitably experience fretting damage in the contact areas between components due to intense vibrations. Due to the widespread poor wear resistance of titanium alloys, long-term fretting damage can lead to a loss of matching between components and even premature fatigue fracture, resulting in catastrophic accidents. According to statistics from the U.S. Air Force, fretting damage accounts for more than one-sixth of aircraft engine damage, severely limiting the service life and reliability of titanium alloy components. Therefore, improving titanium alloy's resistance to fretting damage is a key focus of alloy performance optimization. Therefore, how to simultaneously enhance titanium alloy's strength, plasticity, and wear resistance is a major scientific issue for metal materials and, by extension, all structural materials. Summary of the Invention

[0005] In order to overcome the above problems, the purpose of the present invention is to provide a method for improving the comprehensive performance of alloy materials based on the "injection molding" principle, so as to meet the current demand of the aerospace field for materials with high strength, high plasticity and high wear resistance, achieve weight reduction and efficiency improvement and promote the application of new structural materials.

[0006] The technical solution of the present invention is:

[0007] A method for improving the comprehensive performance of alloy materials based on the principle of "weaving injection molding" comprises the following steps:

[0008] (1) Determine the alloy composition for plasticization and enhancement based on the service conditions of the alloy or component;

[0009] (2) Based on the stress characteristics of the alloy or formed component, prepare the internal "woven" structure of the alloy to enhance plasticity;

[0010] (3) Preparing a solid frame for the final forming of the alloy or component, and placing the plasticity-enhancing "woven" structure at a predetermined position in the solid frame. The specific process is as follows: first, determining the required "woven" structure based on the weak position of the alloy or component, then designing a three-dimensional digital model of the solid frame based on the structure of the alloy or component, and adding the determined "woven" structure to the weak position in the three-dimensional digital model, and finally using additive manufacturing technology to form the solid frame and the "woven" structure in an integrated manner, thereby realizing the positioning and placement of the "woven" structure in the solid frame;

[0011] (4) Injecting materials into the solid frame to increase strength and wear resistance;

[0012] (5) The filled formed frame structure is subjected to vacuum degassing treatment and welded to seal;

[0013] (6) Perform hot isostatic pressing to prepare the required alloy material;

[0014] The performance of the material is designed according to the service requirements of the component, and the method realizes the forming of titanium alloy, TiAl-based intermetallic compound, aluminum alloy or high-temperature alloy.

[0015] In the method for improving the comprehensive performance of alloy materials based on the "injection molding" principle, in step (4), the material used to increase the strength and wear resistance is a powdered metal-based composite material.

[0016] The method for improving the comprehensive performance of alloy materials based on the "injection molding" principle is described. The powder metal matrix composite material is a composite material of a particle reinforcement phase and alloy powder. The volume fraction of the particle reinforcement phase ranges from 0.5 vol% to 35 vol%, and the rest is alloy powder. The particle size of the powder metal matrix composite material is 10 to 250 μm.

[0017] In the method for improving the comprehensive performance of alloy materials based on the "weaving and injection molding" forming principle, the particle reinforcement phase is ceramic particles, metal particles or carbide particles.

[0018] The design concept of the present invention is:

[0019] Current methods for improving the performance of metal materials face challenges such as difficulty achieving both strength and plasticity, as well as high testing costs and limited applicability. For example, while patent CN119082547A addresses the incompatibility between strength and plasticity in metastable β-titanium alloys, it optimizes the alloy composition, requires numerous testing iterations, is costly, and is only applicable to this type of alloy. While the gradient metal material prepared in patent CN116005091A exhibits good overall performance, the preparation process is complex and risky, making it difficult to process complex titanium alloys, and it fails to address wear resistance.

[0020] This invention pioneers the concept of "performance decomposition + reverse design," breaking down the comprehensive performance requirements of an alloy or component into individual properties. Based on these individual properties, materials and structures are designed to increase plasticity, strength, wear resistance, and weight reduction. Composite manufacturing techniques are then employed to fabricate the desired alloy materials. This innovative structural design and material combination gives this invention a significant advantage in improving overall material performance, providing a new solution to the demand for high-performance metal materials in fields such as aerospace.

[0021] The present invention performs vacuum degassing treatment on the filled formed frame structure and welds and seals it, which has the following synergistic effects with hot isostatic pressing (HIP):

[0022] (1) The filled formed frame structure is vacuum degassed and welded to seal, which can not only remove gas impurities, optimize the microstructure, and improve the purity and density of the material, but also ensure the smooth progress of the subsequent hot isostatic pressing treatment, and ultimately significantly improve the comprehensive performance of the material.

[0023] (2) Hot isostatic pressing (HIP) is not only a simple densification process, but also a key technical means to realize the core concept of "performance disassembly + reverse design". It breaks through the bottleneck of the difficulty of balancing the strength, plasticity and wear resistance of traditional metal materials through the synergistic effect of defect elimination, interface strengthening, microstructure regulation and complex structure forming.

[0024] (3) The synergistic vacuum degassing with hot isostatic pressing provides a "high-pressure densification environment without gas interference", which enables the powder to be fully densified through particle rearrangement, plastic deformation and diffusion welding under high temperature and high pressure, and finally obtains a composite material with a density close to the theoretical density (improving mechanical properties such as strength and plasticity).

[0025] The advantages and beneficial effects of the present invention are:

[0026] 1. The material design of the present invention is very flexible. Different materials that increase plasticity, increase strength, increase wear resistance and effectively reduce weight can be selected according to different usage environments and performance requirements, so that the characteristics and advantages of each material can coexist. In addition, the structure and distribution of each component material can be flexibly changed to meet the requirements of material performance in different parts.

[0027] 2. The present invention effectively improves the comprehensive mechanical properties of the material, breaking through the problem of insufficient comprehensive performance of existing materials.

[0028] 3. The present invention realizes for the first time the preparation of alloys or components with high strength, high plasticity and high wear resistance.

[0029] 4. The present invention can effectively reduce the weight of components.

[0030] 5. The present invention has a wide range of applications and is not limited by ingredients, and can be used to prepare materials with multiple ingredients.

[0031] 6. The present invention breaks through the current technical bottleneck of improving the comprehensive performance of materials in the aerospace field and promotes the further application of metal materials in the aerospace field. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the composite forming alloy structure in Example 1. In the figure, 1-Ti60 titanium alloy mesh, 2-particle reinforced Ti60 titanium alloy powder composite material.

[0033] Figure 2 Schematic diagram of the composite forming alloy structure in Example 2. In the figure, 3-6061 aluminum alloy mesh, 4-particle reinforced 6061 aluminum alloy powder composite material.

[0034] Figure 3 Schematic diagram of the composite forming alloy structure in Example 3. In the figure, 5-HX high temperature alloy mesh, 6-particle reinforced HX high temperature alloy powder composite material.

[0035] Figure 4 Schematic diagram of the composite forming alloy structure in Example 4. In the figure, 7-Ti60 titanium alloy mesh, 8-particle reinforced TiAl-based intermetallic compound powder composite material. DETAILED DESCRIPTION

[0036] In the specific implementation process, the present invention proposes a method for improving the comprehensive performance of alloy materials based on the "weaving injection" forming principle, comprising the following steps:

[0037] (1) Determine the alloy composition for plasticization and enhancement based on the service conditions of the alloy or component;

[0038] (2) Prepare an internal "braided" structure of the alloy to enhance plasticity based on the stress characteristics of the alloy or formed component;

[0039] (3) preparing a solid frame for the final shaping of the alloy or component and placing the plasticity-enhancing "woven" structure at a predetermined position in the frame;

[0040] (4) Injecting materials into the solid frame to increase strength and wear resistance;

[0041] (5) The filled formed frame structure is subjected to vacuum degassing treatment and welded to seal;

[0042] (6) Perform hot isostatic pressing to prepare the required alloy material.

[0043] Below, the present invention is further described in detail by examples.

[0044] Example 1 (Ti60 titanium alloy):

[0045] In this embodiment, a method for improving the comprehensive performance of Ti60 titanium alloy based on the "weaving injection" forming principle includes the following steps:

[0046] (1) Based on the service requirements of the alloy, Ti60 titanium alloy is used to increase the alloy plasticity, and particle-reinforced Ti60 titanium alloy composite material is used to increase the alloy's strength and wear resistance; the composition of Ti60 titanium alloy is as follows by weight percentage: Ti-5.6Al-4Sn-3.3Zr-0.5Mo-0.25Si-0.5Nb-0.5Ta-0.015C.

[0047] In the particle reinforced Ti60 titanium alloy composite material, the particle reinforcement phase is TiB, the proportion of the particle reinforcement phase is 2.5vol%, and the rest is Ti60 titanium alloy powder. The particle size of the particle reinforced Ti60 titanium alloy composite material is 10~150μm.

[0048] (2) Ti60 titanium alloy is mainly used to bear tensile loads, and laser selective melting forming technology is used to prepare a "woven" structure with enhanced plasticity ( Figure 1 );

[0049] (3) A solid frame for forming is prepared from Ti60 titanium alloy, and the prepared Ti60 titanium alloy "braided" structure is placed at the center of the solid frame;

[0050] (4) Injecting particle-reinforced Ti60 titanium alloy powder composite material into the solid frame;

[0051] (5) The filled formed frame structure is subjected to vacuum degassing treatment and welded to seal;

[0052] (6) Select the process parameters as follows: heat preservation at 1020℃, pressure at 170MPa, time at 2.5h, and perform hot isostatic pressing to prepare the required materials.

[0053] like Figure 1 As shown in FIG. 1 , the structure of the material prepared by the composite process is as follows: Using Ti60 titanium alloy mesh 1 as the "woven" structure can effectively improve the plasticity of the alloy. Using particle-reinforced Ti60 titanium alloy powder composite material 2 as the filler material can ensure the material's high-temperature strength and wear resistance.

[0054] In this example, the material's performance indicators are as follows: tensile strength of 1202 MPa, yield strength of 1067 MPa, elongation of 12.3%, and coefficient of friction of 0.42. To meet the service requirements of Ti60 titanium alloy, a "woven" structure with enhanced plasticity was fabricated using selective laser melting technology. Furthermore, a particle-reinforced Ti60 titanium alloy powder composite material was injected, significantly improving the material's strength and wear resistance while maintaining plasticity.

[0055] Example 2 (6061 aluminum alloy):

[0056] In this embodiment, a method for improving the comprehensive performance of 6061 aluminum alloy based on the "weaving injection molding" forming principle includes the following steps:

[0057] (1) Based on the service requirements of the alloy, 6061 aluminum alloy is used to increase the alloy plasticity, and particle-reinforced 6061 aluminum alloy composite materials are used to increase the strength and wear resistance of the alloy; the composition of 6061 aluminum alloy is as follows by weight percentage: Al-1Mg-0.5Si-0.3Cu-0.15Mn-0.15Zn-0.15C-0.7Fe.

[0058] In the particle reinforced 6061 aluminum alloy composite material, the particle reinforcement phase is SiC, the proportion of the particle reinforcement phase is 25 vol%, and the rest is 6061 aluminum alloy powder. The particle size of the particle reinforced 6061 aluminum alloy composite material is 10~175 μm.

[0059] (2) 6061 aluminum alloy is mainly used to bear compressive loads, and the electron beam selective melting forming technology is used to prepare the "woven" structure with enhanced plasticity ( Figure 2 );

[0060] (3) A solid frame for forming is prepared using 6061 aluminum alloy, and the prepared 6061 aluminum alloy "woven" structure is placed at the center of the solid frame;

[0061] (4) Injecting particle-reinforced 6061 aluminum alloy powder composite material into the solid frame;

[0062] (5) The filled formed frame structure is subjected to vacuum degassing treatment and welded to seal;

[0063] (6) Select the process parameters as follows: temperature 470℃, pressure 150MPa, time 2h, and perform hot isostatic pressing to prepare the required materials.

[0064] like Figure 2As shown, the structure of the material prepared by the composite process is as follows: 6061 aluminum alloy mesh 3 is used as the "woven" structure to effectively improve the plasticity of the alloy. Particle-reinforced 6061 aluminum alloy powder composite material 4 is used as the filling material to ensure the strength and wear resistance of the material.

[0065] In this example, the material's performance indicators are as follows: tensile strength of 275 MPa, yield strength of 223 MPa, elongation of 14.3%, and coefficient of friction of 0.32. To meet the service requirements of 6061 aluminum alloy, electron beam selective melting (EBM) was used to create a "braided" structure with enhanced plasticity. Furthermore, a particle-reinforced 6061 aluminum alloy composite was injected, significantly improving the material's strength and wear resistance while maintaining plasticity.

[0066] Example 3 (HX high temperature alloy):

[0067] In this embodiment, a method for improving the comprehensive performance of HX high-temperature alloy based on the "weaving injection molding" principle includes the following steps:

[0068] (1) Based on the service requirements of the alloy, HX high-temperature alloy is used to increase the alloy plasticity, and particle-reinforced HX high-temperature alloy composite materials are used to increase the strength and wear resistance of the alloy; the composition of HX high-temperature alloy is as follows in terms of weight percentage: Ni-20Cr-16Fe-8Mo-2Co-0.6W-0.1C-0.008B.

[0069] In the particle reinforced HX high temperature alloy composite material, the particle reinforcement phase is Y2O3, the proportion of the particle reinforcement phase is 10vol%, and the rest is HX high temperature alloy powder. The particle size of the particle reinforced HX high temperature alloy composite material is 75~250μm.

[0070] (2) HX high temperature alloy is mainly used to bear compressive loads, and the laser selective melting forming technology is used to prepare the "woven" structure with enhanced plasticity ( Figure 3 );

[0071] (3) Using HX high-temperature alloy to prepare a solid frame for forming, and placing the prepared HX high-temperature alloy "braided" structure in the center of the solid frame;

[0072] (4) Injecting particle-reinforced HX high-temperature alloy powder composite materials into the solid frame;

[0073] (5) The filled formed frame structure is subjected to vacuum degassing treatment and welded to seal;

[0074] (6) Select the process parameters as follows: temperature 1180℃, pressure 170MPa, time 4h, and perform hot isostatic pressing to prepare the required materials.

[0075] like Figure 3 As shown, the structure of the material prepared by the composite process is as follows: the use of HX high-temperature alloy mesh 5 as the "woven" structure can effectively improve the plasticity of the alloy. The use of particle-reinforced HX high-temperature alloy powder composite material 6 as the filling material can ensure the strength and wear resistance of the material.

[0076] In this example, the material's performance indicators are as follows: tensile strength of 1389 MPa, yield strength of 1107 MPa, elongation of 26%, and coefficient of friction of 0.39. To meet the service requirements of HX superalloys, laser selective melting technology was used to create a "woven" structure with enhanced plasticity. This structure was then infused with particle-reinforced HX superalloy composites, significantly improving the material's strength and wear resistance while maintaining plasticity.

[0077] Example 4 (high temperature gradient titanium alloy):

[0078] In this embodiment, a method for improving the comprehensive performance of a high-temperature gradient titanium alloy based on the principle of "weaving and injection molding" includes the following steps:

[0079] (1) Based on the service requirements of the alloy, Ti60 titanium alloy is used to increase the alloy's plasticity, and a particle-reinforced TiAl-based intermetallic compound composite material is used to increase the alloy's strength and wear resistance. The composition of Ti60 titanium alloy is as follows by weight: Ti-5.6Al-4Sn-3.3Zr-0.5Mo-0.25Si-0.5Nb-0.5Ta-0.015C. The composition of the TiAl-based intermetallic compound is as follows by atomic percentage: Ti-45Al-2Mn-2Nb-1B.

[0080] In the particle-reinforced TiAl-based intermetallic compound composite material, the particle-reinforced phase is TiB, the proportion of the particle-reinforced phase is 1 vol%, and the rest is TiAl-based intermetallic compound powder. The particle size of the particle-reinforced TiAl-based intermetallic compound composite material is 75~200 μm.

[0081] (2) Ti60 titanium alloy is mainly used to bear compressive loads, and laser selective melting forming technology is used to prepare a "woven" structure with enhanced plasticity ( Figure 4 );

[0082] (3) A solid frame for forming is prepared using TiAl intermetallic compound, and the prepared Ti60 titanium alloy "braided" structure is placed in the center of the solid frame;

[0083] (4) Injecting particle-reinforced TiAl-based intermetallic compound powder composites into the solid frame;

[0084] (5) The filled formed frame structure is subjected to vacuum degassing treatment and welded to seal;

[0085] (6) Select the process parameters as follows: temperature 1030℃, pressure 180MPa, time 2h, and perform hot isostatic pressing to prepare the required materials.

[0086] like Figure 4 As shown, the structure of the material prepared by the composite process is as follows: Using Ti60 titanium alloy mesh 7 as the "woven" structure can effectively improve the alloy's plasticity. Using particle-reinforced TiAl-based intermetallic compound powder composite material 8 as the filler material can ensure the material has high strength and wear resistance, and can effectively reduce the material density and achieve a weight reduction effect.

[0087] In this example, the material's performance indicators are as follows: tensile strength of 1276 MPa; yield strength of 1153 MPa, elongation of 8.4%, and coefficient of friction of 0.40. To meet the service requirements of high-temperature gradient titanium alloys, a "braided" structure with enhanced plasticity was fabricated using selective laser melting technology. A particle-reinforced TiAl-based intermetallic compound powder composite was then injected, significantly improving the material's strength and wear resistance while maintaining plasticity.

[0088] As can be seen from the examples, the present invention achieves synergistic improvement of material properties through hot isostatic pressing, and its effects and benefits are mainly reflected in the following aspects:

[0089] 1. Eliminate internal defects and improve material density

[0090] Examples 1 and 4 simultaneously apply high temperatures (1000-1100°C) and high pressures (150-200 MPa) to close internal defects such as pores and microcracks in the material under high-temperature plastic flow, achieving full densification. In Example 1, the Ti60 titanium alloy composite material achieved a tensile strength of 1202 MPa after HIP treatment (far exceeding the ~950 MPa of conventional cast Ti60 alloy), demonstrating that densification significantly reduces the strength-weakening effects of defects. In Example 4, the TiAl-based composite material exhibited a friction coefficient of 0.40, attributed to reduced surface wear due to high density. Furthermore, in Example 2, the tensile strength reached 275 MPa and the yield strength reached 223 MPa; in Example 3, the tensile strength reached 1389 MPa and the yield strength reached 1107 MPa. Thus, through densification and microstructural optimization, the tensile and yield strengths of the material are significantly improved.

[0091] 2. Promote metallurgical bonding of multi-material interfaces

[0092] Under high temperature and high pressure, atomic diffusion occurs between the braided structure (plasticized zone) and the filler material (reinforced / wear-resistant zone), forming a metallurgical bond interface that avoids the interfacial brittleness or stress concentration associated with traditional welding. In Example 1, the particle-reinforced Ti60 composite material exhibited an elongation of 12.3%, indicating that the interfacial bonding did not significantly impair plasticity. In Example 4, the composite tensile strength of the Ti60 titanium alloy braided structure and TiAl-based filler material reached 1276 MPa, demonstrating the reliability of the interfacial bonding. In Examples 2 and 3, hot isostatic pressing (HIP) enhanced the bonding between the reinforcing phase (e.g., SiC particles or Y2O3 particles) and the matrix material (e.g., 6061 aluminum alloy or HX high-temperature alloy). The friction coefficient of the 6061 aluminum alloy composite material was 0.32, and that of the HX high-temperature alloy composite material was 0.39. This enhanced bonding helps improve the overall performance of the composite material, particularly in high-temperature and high-stress environments.

[0093] 3. Optimize the synergy between microstructure and performance

[0094] High pressure inhibits grain coarsening, and high temperature promotes dynamic recrystallization to form a uniform fine-grained structure. HIP pressure forces the reinforcing particles to disperse evenly, avoiding performance fluctuations caused by agglomeration. In Example 1, the yield strength of the Ti60 composite material is 1067MPa and the elongation is 12.3%, reflecting the synergistic optimization of strength-plasticity. In Examples 2 and 3, hot isostatic pressing can improve the plasticity and toughness of the material, making the material less prone to brittle fracture during processing and use. For example, the elongation of the 6061 aluminum alloy composite material reaches 14.3%, while the elongation of the HX high-temperature alloy composite material reaches 26%.

[0095] 4. Support integrated forming of complex structures

[0096] The isotropic pressure of HIP ensures uniform penetration of filling materials within complex frames, maintains the preset shape of the woven structure, avoids the size restrictions of complex components caused by traditional processes (such as explosive impact or welding), and is suitable for special-shaped aerospace parts.

[0097] The implementation results show that the present invention can design the performance of materials according to the service requirements of components, and realize the forming of lightweight alloy materials or components such as titanium alloys, TiAl-based intermetallic compounds, aluminum alloys or high-temperature alloys with the characteristics of high strength, high plasticity, high wear resistance and low weight. It fills the technical gap in the domestic preparation of complex components, breaks through the current technical bottleneck of improving the comprehensive performance of materials in the aerospace field, and promotes the further application of metal materials in the aerospace field.

[0098] In addition, the above description is merely a partial representation of the embodiments of the present invention and is not intended to limit the scope of the present invention. For researchers in this field, factors such as the alloy components and "braided" structures used to enhance plasticity, the alloy components and particle reinforcement phases used to enhance strength and wear resistance, the alloy combinations used for enhanced plasticization, the types of alloy properties (toughness, fatigue performance, etc.) used to enhance performance, and the hot isostatic pressing process can be adjusted and combined accordingly based on actual needs. Therefore, various other corresponding changes and modifications based on the technical solutions and technical ideas of the present invention remain within the scope of protection covered by the present invention.

Claims

1. A method for improving the comprehensive performance of alloy materials based on the principle of "weaving injection molding", characterized in that: The following steps are involved: (1) Determine the alloy composition for plasticization and enhancement based on the service conditions of the alloy or component; (2) Based on the stress characteristics of the alloy or formed component, prepare the internal "woven" structure of the alloy to enhance plasticity; (3) Preparing a solid frame for the final forming of the alloy or component, and placing the "woven" structure with enhanced plasticity at a predetermined position in the solid frame. The specific process is as follows: first, determining the required "woven" structure based on the weak position of the alloy or component, then designing a three-dimensional digital model of the solid frame based on the structure of the alloy or component, and adding the determined "woven" structure to the weak position in the three-dimensional digital model, and finally using additive manufacturing technology to form the solid frame and the "woven" structure in an integrated manner, thereby realizing the positioning and placement of the "woven" structure in the solid frame; (4) Injecting materials into the solid frame to increase strength and wear resistance; (5) The filled formed frame structure is subjected to vacuum degassing treatment and welded to seal; (6) Perform hot isostatic pressing to prepare the required alloy material; The performance of the material is designed according to the service requirements of the component, and the method realizes the forming of titanium alloy, TiAl-based intermetallic compound, aluminum alloy or high-temperature alloy.

2. A method for improving the comprehensive performance of alloy materials based on the "weaving injection" forming principle according to claim 1, characterized in that: In step (4), the material used to increase strength and wear resistance is a powder metal matrix composite material.

3. A method for improving the comprehensive performance of alloy materials based on the "weaving injection" forming principle according to claim 2, characterized in that: The powder metal matrix composite material is a composite material of a particle reinforcement phase and an alloy powder. The volume fraction of the particle reinforcement phase ranges from 0.5 vol% to 35 vol%, and the rest is alloy powder. The particle size of the powder metal matrix composite material is 10 to 250 μm.

4. A method for improving the comprehensive performance of alloy materials based on the "weaving injection" forming principle according to claim 3, characterized in that: The particle reinforcement phase is ceramic particles, metal particles or carbide particles.

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