Method for improving comprehensive performance of alloy material based on'weaving 'forming principle

Abstract

The invention relates to the field of metal manufacturing, in particular to a method for improving the comprehensive performance of an alloy material based on the'weaving 'forming principle. The method comprises the following steps: 1) determining alloy components for plasticizing and enhancing functions based on alloy service requirements; (2) an alloy internal woven structure used for enhancing plasticity and a solid frame used for forming are prepared, and the woven structure used for enhancing plasticity is placed at a preset position in the frame; 3) injecting a material for enhancing strength and wear resistance into the solid frame; (4) vacuum degassing treatment is conducted on the filled forming frame structure, and welding and sealing are conducted; 5, hot isostatic pressing treatment is carried out, and the needed alloy material.The formed alloy or component has the advantages of being high in strength, plasticity and abrasion resistance, low in weight and the like, the technical bottleneck of improvement of the comprehensive performance of materials in the aerospace field at the present stage is broken through, and further application of metal materials in the aerospace field is promoted.

Description

Technical Field

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

[0002] Due to their excellent comprehensive mechanical, physical, and chemical properties that cannot be compared with other engineering materials, metal materials have always played an important role in the progress and development of human society. With the rapid development of the national economy, higher requirements have been put forward for the properties of metal materials, especially their mechanical properties such as strength and toughness. Adjusting the microstructure of metal materials to improve their properties has become the main direction of materials research in the past few decades, such as various strengthening methods for metal materials including strain hardening, grain refinement strengthening, dispersion strengthening, and solid solution strengthening. However, while these methods improve the strength of the material, they reduce the plasticity and toughness of the material, thus failing to meet the requirements for the comprehensive properties of metal materials in today's industrial development. In most cases, there is an inverse relationship between the strength and toughness of metal materials, that is, "strength increases - plasticity / toughness decreases". This "one wins while the other loses" situation has greatly hindered the practical application of high-strength new materials and has become a bottleneck in the development and application of metal materials. Therefore, in the face of the growing requirements of human society for the multifunctionality of materials, the traditional methods of regulating the microstructure have approached their theoretical limits.

[0003] Some scholars have adopted new ideas and methods to solve the "inverse" relationship between material properties and achieve an improvement in comprehensive properties. For example: The patent with the 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 and can play a local barrier role in the nucleation / growth process of SIMT / twinning, thereby increasing the critical excitation stress and then improving the problem that the strength and plasticity of traditional metastable β titanium alloys are difficult to be compatible. 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 the single property of the alloy has not reached its limit; 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 it can only be applicable to this kind of alloy and is difficult to be used on a large scale.

[0004] In view of the above problems, some scholars have adopted gradient materials to optimize the properties of alloys. For example, the patent with the publication number CN116005091A provides a high-strength and high-plasticity matching gradient titanium alloy and its preparation method. This method successfully prepares a gradient metal material with high-strength and high-plasticity matching through the method of explosive shock hardening combined with heat treatment. The size of the prepared gradient metal material can be freely designed, and it has the advantages of low cost, stable processability, good controllability, and high preparation efficiency. However, on the one hand, the preparation process of this method is complex, with high operation difficulty and danger, and it is impossible to perform high-strength and high-plasticity treatment on titanium alloy materials with complex structures; on the other hand, the optimized result can only obtain a titanium alloy with good comprehensive properties. In addition, current research only focuses on the high-strength and high-plasticity matching of alloys. For the actual application of titanium alloys, their wear resistance is also a crucial property. During the service process of titanium alloy components, due to strong oscillations, fretting damage inevitably occurs in the contact area between components. Due to the common problem of poor wear resistance of titanium alloys, long-term fretting damage will lead to the loss of the matching relationship between components and even premature fatigue fracture, causing catastrophic accidents. According to the statistics of the US Air Force, fretting damage accounts for more than 1 / 6 of the damage to aeroengines. Fretting damage severely restricts the service life and reliability of titanium alloy components. Therefore, improving the ability of titanium alloys to resist fretting damage is also the focus of alloy property optimization. Therefore, at present, how to simultaneously improve the high-strength and high-plasticity and wear resistance of titanium alloys is a major scientific problem for metal materials and even 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 properties of alloy materials based on the "weaving and injection" forming principle to meet the current needs of the aerospace field for materials with high strength, high plasticity, and high wear resistance, and to achieve weight reduction, efficiency improvement, and promote the application of new structural materials.

[0006] The technical solution of the present invention is as follows: A method for improving the comprehensive properties of alloy materials based on the "weaving and injection" forming principle, comprising the following steps: (1) Determining the alloy composition for plasticizing and strengthening functions based on the service conditions of the alloy or component; (2) Preparing an internal "weaving" structure of the alloy for enhancing plasticity according to the force characteristics of the alloy or the formed component; (3) Prepare a solid frame for the final forming of the alloy or component, and place the "braided" structure for enhancing plasticity at a predetermined position in the solid frame. The specific process is as follows: First, determine the required "braided" structure based on the weak positions of the alloy or component. Subsequently, conduct three-dimensional digital model design on the solid frame according to the structure of the alloy or component, and add the determined "braided" structure at the weak positions in the three-dimensional digital model. Finally, use additive manufacturing technology to integrally form the solid frame and the "braided" structure, realizing the positioning and placement of the "braided" structure in the solid frame; (4) Inject materials for increasing strength and wear resistance into the solid frame; (5) Conduct vacuum degassing treatment on the filled formed frame structure and weld it shut; (6) Conduct hot isostatic pressing treatment to prepare the required alloy material; Design the properties of the material according to the service requirements of the component. This method realizes the forming of titanium alloys, TiAl-based intermetallic compounds, aluminum alloys, or superalloys.

[0007] In the method for improving the comprehensive properties of alloy materials based on the "weaving and injection" forming principle, in step (4), the material for increasing strength and wear resistance is a powder metal matrix composite.

[0008] In the method for improving the comprehensive properties of alloy materials based on the "weaving and injection" forming principle, the powder metal matrix composite is a composite of a particle reinforcement phase and alloy powder. The volume fraction range of the particle reinforcement phase is 0.5 vol% - 35 vol%, and the rest is alloy powder. The particle size of the powder metal matrix composite is 10 - 250 μm.

[0009] In the method for improving the comprehensive properties of alloy materials based on the "weaving and injection" forming principle, the particle reinforcement phase is ceramic particles, metal particles, or carbide particles.

[0010] The design concept of the present invention is: Currently, the methods for improving the properties of metal materials have problems such as it being difficult to have both strength and plasticity, toughness, high test costs, and limited application ranges. For example, although patent CN119082547A solves the problem of the incompatibility between the strength and plasticity of metastable β titanium alloys, it has many test iterations and high costs through optimizing alloy compositions, and is only applicable to this type of alloy. The gradient metal material prepared by patent CN116005091A has good comprehensive properties, but the preparation process is complex and dangerous, it is difficult to process complex structure titanium alloy materials, and the wear resistance problem is not considered.

[0011] The present invention first proposes the idea of "performance disassembly + reverse design", which disassembles the comprehensive performance requirements of alloys or components into single performances item by item. According to the required single performances, materials and structures for increasing plasticity, strength, wear resistance and effectively reducing weight are designed, and composite manufacturing technology is used to realize the preparation of the required alloy materials. This innovative structural design and material combination method gives the present invention obvious advantages in improving the comprehensive performance of materials, providing a new solution for the demand of high-performance metal materials in fields such as aerospace.

[0012] The present invention performs vacuum degassing treatment on the filled formed frame structure and welds it shut, which has the following synergistic effects with hot isostatic pressing (HIP) treatment: (1) Performing vacuum degassing treatment on the filled formed frame structure and welding it shut can not only remove gas impurities, optimize the microstructure, improve the purity and density of the material, but also ensure the smooth progress of subsequent hot isostatic pressing treatment, ultimately significantly improving the comprehensive performance of the material.

[0013] (2) Hot isostatic pressing (HIP) treatment is not only a simple densification process, but also a key technical means to realize the core concept of "performance disassembly + reverse design". Through the synergistic effects of defect elimination, interface strengthening, microstructure control and complex structure forming, it breaks through the bottleneck that it is difficult to balance strength, plasticity and wear resistance of traditional metal materials.

[0014] (3) The synergistic vacuum degassing with hot isostatic pressing provides a "high-pressure densification environment without gas interference", enabling the powder to be fully densified through particle rearrangement, plastic deformation and diffusion bonding under high temperature and high pressure, and ultimately obtaining a composite material close to the theoretical density (improving mechanical properties such as strength and plasticity).

[0015] The advantages and beneficial effects of the present invention are as follows: 1. The material design in the present invention is very flexible. Different materials for increasing plasticity, strength, wear resistance and effectively reducing weight can be selected according to different usage environments and performance requirements, enabling the respective characteristics and advantages of the materials to coexist. Moreover, by flexibly changing the structure and distribution of each component material, the usage performance requirements of different parts for the material can be met.

[0016] 2. The present invention effectively improves the comprehensive mechanical properties of the material, breaking through the problem of insufficient comprehensive performance of existing materials.

[0017] 3. The present invention first realizes the preparation of alloys or components with high strength, high plasticity and high wear resistance.

[0018] 4. The present invention can effectively reduce the weight of components.

[0019] 5. The present invention has a wide range of applications and is not restricted by components, enabling the preparation of various component materials.

[0020] 6. The present invention breaks through the technical bottleneck in improving the comprehensive properties of materials in the current aerospace field and promotes the further application of metallic materials in the aerospace field. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the composite formed alloy in Example 1. In the figure, 1 - Ti60 titanium alloy mesh, 2 - particle-reinforced Ti60 titanium alloy powder composite material.

[0022] Figure 2 It is a schematic diagram of the composite formed alloy in Example 2. In the figure, 3 - 6061 aluminum alloy mesh, 4 - particle-reinforced 6061 aluminum alloy powder composite material.

[0023] Figure 3 It is a schematic diagram of the composite formed alloy in Example 3. In the figure, 5 - HX superalloy mesh, 6 - particle-reinforced HX superalloy powder composite material.

[0024] Figure 4 It is a schematic diagram of the composite formed alloy in Example 4. In the figure, 7 - Ti60 titanium alloy mesh, 8 - particle-reinforced TiAl-based intermetallic compound powder composite material. DETAILED DESCRIPTION OF THE INVENTION

[0025] In the specific implementation process, the present invention proposes a method for improving the comprehensive properties of alloy materials based on the "weaving and injection" forming principle, including the following steps: (1) Determine the alloy components for plasticizing and strengthening functions based on the service conditions of the alloy or component; (2) Prepare the internal "weaving" structure of the alloy for enhancing plasticity according to the stress characteristics of the alloy or formed component; (3) Prepare the solid framework for the final forming of the alloy or component, and place the "weaving" structure for enhancing plasticity at a predetermined position in the framework; (4) Inject materials for increasing strength and wear resistance into the solid framework; (5) Perform vacuum degassing treatment on the filled formed framework structure and weld it shut; (6) Perform hot isostatic pressing treatment to prepare the required alloy materials.

[0026] Next, the present invention will be further elaborated in detail through examples.

[0027] Example 1 (Ti60 titanium alloy): In this example, the method for improving the comprehensive properties of Ti60 titanium alloy based on the "weaving and injection" forming principle includes the following steps: (1) Based on the service requirements of the alloy, Ti60 titanium alloy is used to increase the plasticity of the alloy, and particulate-reinforced Ti60 titanium alloy composite is used to increase the strength and wear resistance of the alloy; by weight percentage, the composition of Ti60 titanium alloy is as follows: Ti - 5.6Al - 4Sn - 3.3Zr - 0.5Mo - 0.25Si - 0.5Nb - 0.5Ta - 0.015C.

[0028] In the particulate-reinforced Ti60 titanium alloy composite, the particulate reinforcement phase is TiB, the proportion of the particulate reinforcement phase is 2.5 vol%, and the rest is Ti60 titanium alloy powder. The particle size of the particulate-reinforced Ti60 titanium alloy composite is 10 - 150 μm.

[0029] (2) Ti60 titanium alloy is mainly used to bear tensile loads, and a "woven" structure ( Figure 1 ) for enhancing plasticity is prepared by selective laser melting forming technology; (3) A solid framework for forming is prepared from Ti60 titanium alloy, and the prepared "woven" structure of Ti60 titanium alloy is placed at the central position in the solid framework; (4) The particulate-reinforced Ti60 titanium alloy powder composite is injected into the solid framework; (5) The filled forming framework structure is subjected to vacuum degassing treatment and welded and sealed; (6) The process parameters are selected as: holding temperature 1020 °C, pressure 170 MPa, time 2.5 h, and hot isostatic pressing treatment is carried out to prepare the required material.

[0030] As Figure 1 shown, the structural composition 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 the particulate-reinforced Ti60 titanium alloy powder composite 2 as the filling material can ensure the high-temperature strength and wear resistance of the material.

[0031] In this embodiment, the performance indexes of the prepared material are as follows: tensile strength is 1202 MPa, yield strength is 1067 MPa, elongation is 12.3%, and friction coefficient is 0.42. Aiming at the service requirements of Ti60 titanium alloy, a "woven" structure for enhancing plasticity is prepared by selective laser melting forming technology, and the particulate-reinforced Ti60 titanium alloy powder composite is injected, thereby significantly improving the strength and wear resistance of the material on the basis of ensuring plasticity.

[0032] Example 2 (6061 aluminum alloy): In this embodiment, a method for improving the comprehensive performance of 6061 aluminum alloy based on the "weaving and injection" forming principle includes the following steps: (1)Based on the service requirements of the alloy, 6061 aluminum alloy is used to increase the plasticity of the alloy, and particle-reinforced 6061 aluminum alloy composite material is used to increase the strength and wear resistance of the alloy; by weight percentage, the composition of 6061 aluminum alloy is as follows: Al-1Mg-0.5Si-0.3Cu-0.15Mn-0.15Zn-0.15C-0.7Fe.

[0033] In the particle-reinforced 6061 aluminum alloy composite material, the particle-reinforced phase is SiC, the proportion of the particle-reinforced 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.

[0034] (2)6061 aluminum alloy is mainly used to bear compressive loads, and electron beam selective melting forming technology is used to prepare a "woven" structure for enhancing plasticity ( Figure 2 ); (3)Use 6061 aluminum alloy to prepare a solid frame for forming, and place the prepared 6061 aluminum alloy "woven" structure at the center of the solid frame; (4)Inject particle-reinforced 6061 aluminum alloy powder composite material into the solid frame; (5)Perform vacuum degassing treatment on the filled forming frame structure and weld it shut; (6)Select the process parameters as: temperature 470 °C, pressure 150 MPa, time 2 h, and perform hot isostatic pressing treatment to prepare the required material.

[0035] As Figure 2 shown, the structural composition of the material prepared by the composite process is as follows: Using 6061 aluminum alloy mesh 3 as the "woven" structure can effectively improve the plasticity of the alloy. Using particle-reinforced 6061 aluminum alloy powder composite material 4 as the filling material can ensure the strength and wear resistance of the material.

[0036] In this embodiment, the performance indicators of the prepared material are as follows: tensile strength is 275 MPa, yield strength is 223 MPa, elongation is 14.3%, and friction coefficient is 0.32. Aiming at the service requirements of 6061 aluminum alloy, electron beam selective melting forming technology is used to prepare a "woven" structure for enhancing plasticity, and particle-reinforced 6061 aluminum alloy composite material is injected, thereby significantly improving the strength and wear resistance of the material on the basis of ensuring plasticity.

[0037] Example 3 (HX superalloy): In this embodiment, a method for improving the comprehensive performance of HX superalloy based on the "weaving and injection" forming principle includes the following steps: (1) Based on the service requirements of the alloy, HX superalloy is used to increase the plasticity of the alloy, and particulate-reinforced HX superalloy composite is used to increase the strength and wear resistance of the alloy; by weight percentage, the composition of the HX superalloy is as follows: Ni-20Cr-16Fe-8Mo-2Co-0.6W-0.1C-0.008B.

[0038] In the particulate-reinforced HX superalloy composite, the particulate-reinforced phase is Y2O3, the proportion of the particulate-reinforced phase is 10 vol%, and the rest is HX superalloy powder. The particle size of the particulate-reinforced HX superalloy composite is 75 - 250 μm.

[0039] (2) The HX superalloy is mainly used to bear compressive loads, and the selective laser melting forming technology is used to prepare a "woven" structure ([[]] Figure 3 ) to enhance plasticity; (3) Use the HX superalloy to prepare a solid frame for forming, and place the prepared "woven" structure of the HX superalloy at the central position in the solid frame; (4) Inject the particulate-reinforced HX superalloy powder composite into the solid frame; (5) Perform vacuum degassing treatment on the filled forming frame structure and weld it shut; (6) Select the process parameters as: temperature 1180 °C, pressure 170 MPa, time 4 h, and perform hot isostatic pressing treatment to prepare the required material.

[0040] As Figure 3 shown, the structural composition of the material prepared by the composite process is as follows: Using the HX superalloy mesh 5 as the "woven" structure can effectively improve the plasticity of the alloy. Using the particulate-reinforced HX superalloy powder composite 6 as the filling material can ensure the strength and wear resistance of the material.

[0041] In this embodiment, the performance indicators of the prepared material are as follows: the tensile strength is 1389 MPa, the yield strength is 1107 MPa, the elongation is 26%, and the friction coefficient is 0.39. Aiming at the service requirements of the HX superalloy, the selective laser melting forming technology is used to prepare a "woven" structure to enhance plasticity, and the particulate-reinforced HX superalloy composite is injected, thereby significantly improving the strength and wear resistance of the material while ensuring plasticity.

[0042] Example 4 (High-temperature gradient titanium alloy): In this embodiment, a method for improving the comprehensive performance of high-temperature gradient titanium alloy based on the "weaving and injection" forming principle includes the following steps: (1) Based on the service requirements of the alloy, Ti60 titanium alloy is used to increase the plasticity of the alloy, and particulate-reinforced TiAl-based intermetallic compound composite is used to increase the strength and wear resistance of the alloy; by weight percentage, the composition of Ti60 titanium alloy is as follows: Ti-5.6Al-4Sn-3.3Zr-0.5Mo-0.25Si-0.5Nb-0.5Ta-0.015C. By atomic percentage, the composition of TiAl-based intermetallic compound is as follows: Ti-45Al-2Mn-2Nb-1B.

[0043] In the particulate-reinforced TiAl-based intermetallic compound composite, the particulate reinforcement phase is TiB, the proportion of the particulate reinforcement phase is 1 vol%, and the rest is TiAl-based intermetallic compound powder. The particle size of the particulate-reinforced TiAl-based intermetallic compound composite is 75 - 200 μm.

[0044] (2) Ti60 titanium alloy is mainly used to bear compressive loads, and the selective laser melting forming technology is used to prepare a "woven" structure for enhancing plasticity ( Figure 4 ); (3) Use TiAl intermetallic compound to prepare a solid frame for forming, and place the prepared "woven" structure of Ti60 titanium alloy at the central position in the solid frame; (4) Inject particulate-reinforced TiAl-based intermetallic compound powder composite into the solid frame; (5) Perform vacuum degassing treatment on the filled forming frame structure and weld it shut; (6) Select the process parameters as: temperature 1030 °C, pressure 180 MPa, time 2 h, and perform hot isostatic pressing treatment to prepare the required material.

[0045] As Figure 4 shown, the structural composition 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 plasticity of the alloy. Using particulate-reinforced TiAl-based intermetallic compound powder composite 8 as the filling material can ensure that the material has high strength and wear resistance, and can effectively reduce the density of the material to achieve the effect of weight reduction.

[0046] In this embodiment, the performance indexes of the prepared material are as follows: the tensile strength is 1276 MPa; the yield strength is 1153 MPa, the elongation is 8.4%, and the friction coefficient is 0.40. Aiming at the service requirements of high-temperature gradient titanium alloy, the selective laser melting forming technology is used to prepare a "woven" structure for enhancing plasticity, and particulate-reinforced TiAl-based intermetallic compound powder composite is injected, thereby significantly improving the strength and wear resistance of the material on the basis of ensuring plasticity.

[0047] As can be seen from the examples, the present invention realizes the synergistic improvement of material properties through hot isostatic pressing treatment, and its functions and effects are mainly reflected in the following aspects: 1. Eliminate internal defects and improve material density In Examples 1 and 4, by simultaneously applying high temperature (1000 - 1100 °C) and high pressure (150 - 200 MPa), defects such as pores and microcracks inside the material are closed under high-temperature plastic flow, achieving full densification. In Example 1, after HIP treatment, the tensile strength of the Ti60 titanium alloy composite reaches 1202 MPa (much higher than ~950 MPa of traditional cast Ti60 alloy), indicating that densification significantly reduces the weakening of strength by defects. In Example 4, the friction coefficient of the TiAl-based composite is 0.40 because high density reduces surface wear. Additionally, in Example 2, the tensile strength reaches 275 MPa and the yield strength reaches 223 MPa; in Example 3, the tensile strength reaches 1389 MPa and the yield strength reaches 1107 MPa. Thus, through densification and microstructure optimization, the tensile strength and yield strength of the material are significantly improved.

[0048] 2. Promote metallurgical bonding at the interfaces of multiple materials Atomic diffusion occurs between the woven structure (plasticized zone) and the filling material (reinforcing / wear-resistant zone) under high temperature and high pressure, forming a metallurgical bonding interface and avoiding interface brittleness or stress concentration caused by traditional welding. In Example 1, the elongation of the particle-reinforced Ti60 composite is 12.3%, indicating that the interface bonding does not significantly damage plasticity. In Example 4, the composite tensile strength of the Ti60 titanium alloy woven structure and the TiAl-based filling material is 1276 MPa, indicating the reliability of the interface bonding. In Examples 2 and 3, hot isostatic pressing treatment can improve the bonding force between the reinforcing phase (such as SiC particles or Y2O3 particles) and the matrix material (such as 6061 aluminum alloy or HX superalloy). The friction coefficient of the 6061 aluminum alloy composite is 0.32, and the friction coefficient of the HX superalloy composite is 0.39. This enhancement of the bonding force helps to improve the overall performance of the composite material, especially its performance under high-temperature and high-stress environments.

[0049] 3. Optimize the synergy of microstructure and properties High pressure inhibits grain coarsening, and high temperature promotes dynamic recrystallization, forming a uniform fine-grained structure. The 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 is 1067 MPa and the elongation is 12.3%, reflecting the synergistic optimization of strength and plasticity. In Examples 2 and 3, hot isostatic pressing treatment can improve the plasticity and toughness of the material, making the material less likely to undergo brittle fracture during processing and use. For example, the elongation of the 6061 aluminum alloy composite reaches 14.3%, while the elongation of the HX superalloy composite reaches 26%.

[0050] 4. Support integrated forming of complex structures The isotropic pressure of HIP ensures uniform penetration of the filling material within the complex framework, maintains the preset shape of the woven structure, avoids the dimensional limitations on complex components in traditional processes (such as explosive shock or welding), and is applicable to aerospace special-shaped parts.

[0051] The implementation results show that the present invention can design the properties of materials according to the service requirements of components, and realize that lightweight alloy materials or components such as formed titanium alloys, TiAl-based intermetallic compounds, aluminum alloys or superalloys have the characteristics of high strength, high plasticity, high wear resistance and low weight, filling the domestic technical gap in the preparation of complex components, breaking through the technical bottleneck of improving the comprehensive performance of materials in the current aerospace field, and promoting the further application of metal materials in the aerospace field.

[0052] In addition, as described above, only some representatives of the embodiments in the present invention are given, and the scope of the rights of the present invention cannot be limited thereby. For researchers in the field, factors such as the alloy composition for enhancing plasticity and the "woven" structure, the alloy composition for enhancing strength and wear resistance and its particle reinforcement phase, the alloy combination for enhancing plasticization, the types of alloy properties to be improved (toughness, fatigue performance, etc.), and the hot isostatic pressing process can be adjusted and combined according to actual needs. Therefore, making various other corresponding changes and deformations according to the technical solutions and ideas of the present invention still fall within the protection scope covered by the present invention.

Claims

1. A method for improving the comprehensive properties of alloy materials based on the "weaving and injecting" forming principle, characterized in that It includes the following steps: (1) Determine the alloy composition for plasticizing and strengthening functions based on the service conditions of the alloy or component; (2) Prepare the "woven" structure inside the alloy for enhancing plasticity according to the stress characteristics of the alloy or formed component; (3) Prepare the solid framework for the final forming of the alloy or component, and place the "woven" structure for enhancing plasticity at a predetermined position in the solid framework. The specific process is as follows: First, determine the required "woven" structure based on the weak positions of the alloy or component. Subsequently, conduct three-dimensional digital model design on the solid framework based on the structure of the alloy or component, and add the determined "woven" structure at the weak positions in the three-dimensional digital model. Finally, use additive manufacturing technology to integrally form the solid framework and the "woven" structure, realizing the positioning and placement of the "woven" structure in the solid framework; (4) Inject materials for increasing strength and wear resistance into the solid framework; (5) Conduct vacuum degassing treatment on the filled formed framework structure and weld it shut; (6) Conduct hot isostatic pressing treatment to prepare the required alloy material; Design the properties of the material according to the service requirements of the component. This method realizes the forming of titanium alloy, TiAl-based intermetallic compound, aluminum alloy or superalloy.

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

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

4. A method for improving the comprehensive properties of alloy materials based on the "weaving injection" forming principle according to claim 3, characterized in that, [[ID=P10]] The particle reinforcement phase is ceramic particles, metal particles or carbide particles.

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