A rapid preparation method for high-damping titanium-nickel-titanium-based matrix composite material with no interface defects

Abstract

The invention discloses a method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects, the method comprising: 1. cutting and rounding of titanium-nickel foil and titanium foil; 2. grinding, pickling, cleaning and drying pretreatment of titanium-nickel foil and titanium foil; 3. stacking alternately in sequence to form a laminated foil and performing discharge plasma sintering to obtain a titanium-nickel-titanium-based composite material. The invention adopts low-temperature and short-time discharge plasma sintering to reduce the degree of interface reaction between titanium foil and titanium-nickel foil, reduce the influence on the composition of titanium-nickel foil, retain the high damping enhancement characteristics of titanium-nickel alloy, realize the rapid preparation of high-damping titanium-nickel-titanium-based composite material with no interface defects, and improve the comprehensive performance of titanium-nickel-titanium-based composite material.

Description

Technical Field

[0001] The invention belongs to the technical field of titanium-based composite materials, and in particular relates to a method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects. Background Art

[0002] Titanium metal has been widely used in the fields of aviation and aerospace due to its low density, excellent high and low temperature properties, and excellent corrosion resistance. It is known as the "space metal". At present, research on titanium and its alloys mainly focuses on regulating the composition and structure in order to significantly improve the mechanical properties. However, the service environment of aerospace materials is complex, and there are limitations to only focusing on the improvement of mechanical properties. High-speed aircraft will produce severe broadband random vibration and noise environment during service, causing fatigue failure and dynamic instability of the structure. Therefore, it is also crucial to improve the damping performance of aerospace materials, that is, vibration reduction and noise reduction performance.

[0003] Titanium-nickel alloy is a twin-crystal damping alloy. Under the change of stress or temperature, it will induce martensitic phase transformation, resulting in the movement of martensitic twin grain boundaries and causing static phase lag of stress and strain. Therefore, it is often used as a damping enhancement phase and compounded with structural materials. However, due to the large differences in physical and chemical properties between titanium and titanium-nickel alloys, a large lattice mismatch will be generated at the bonding interface during the connection process, and defects such as cracks and holes are easily generated. Therefore, defect-free regulation of the titanium-nickel / titanium interface structure will further promote the application of titanium-nickel-titanium composite materials in the field of vibration and noise reduction.

[0004] At present, domestic and foreign researchers mainly combine titanium-nickel alloys with titanium by means of welding. Miranda et al. used laser welding to connect titanium-nickel alloys with titanium. Studies have shown that laser welding can achieve efficient composites of titanium-nickel alloys with titanium and its alloys, but there is a great tendency to crack at the welded joints, and transverse and longitudinal cracks are common in the joint area. Deng et al. combined titanium-nickel alloys with titanium alloys by stir friction welding. The study found that the thermal coupling of residual deformation and friction heat promoted the formation of the interface reaction layer and significantly coarsened it, seriously affecting the interface bonding quality. Simoes et al. placed alternating nano-nickel / titanium films between titanium-nickel alloys and titanium alloy foils, and used reaction diffusion welding to achieve the composite of titanium-nickel alloys and titanium alloys. This method requires the deposition of nano-scale films on the surface of the welding material by magnetron sputtering before welding. The operation of this process is relatively complicated and cannot be achieved in batches. In addition, due to the slow diffusion of atoms during reaction diffusion welding, this method needs to be kept at 750°C for more than 60 minutes to achieve the connection of metal foils, so the preparation efficiency is low. The damping performance of titanium-nickel alloy is sensitive to its composition. High-temperature and long-time sintering can easily change the composition of titanium-nickel alloy and affect its damping enhancement effect. Therefore, on the basis of ensuring that the interface is defect-free, reducing the material preparation temperature and time as much as possible to retain the high damping enhancement effect of titanium-nickel alloy is the key to the design of titanium-nickel-titanium matrix composite materials. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects in view of the deficiencies of the above-mentioned prior art. The method adopts low-temperature and short-time spark plasma sintering to reduce the degree of interface reaction between titanium foil and titanium-nickel foil, reduce the influence on the composition of titanium-nickel foil, retain the high damping enhancement characteristics of titanium-nickel alloy, realize the rapid and efficient preparation of high-damping titanium-nickel-titanium-based composite materials with no interface defects, and solve the problem that interface defects caused by high-temperature and long-time sintering affect the high damping characteristics of composite materials.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for rapidly preparing a high-damping titanium-nickel-titanium-based matrix composite material with no interface defects, characterized in that the method comprises the following steps:

[0007] Step 1, cutting of titanium-nickel foil and titanium foil: using fast wire electric spark wire cutting, the titanium-nickel foil and titanium foil are cut into rectangular titanium-nickel foil and titanium foil respectively, and then the right angles of the rectangular titanium-nickel foil and titanium foil are chamfered;

[0008] Step 2, pretreatment of titanium-nickel foil and titanium foil: use coarse sandpaper to polish the cross section of the titanium-nickel foil and foil after the rounding treatment in step 1, and then use fine sandpaper to polish the upper and lower surfaces of the titanium-nickel foil and foil until the surface is bright, place the polished titanium-nickel foil and titanium foil in a pickling solution for pickling, take them out and continue to place them in an acetone solution for cleaning with an ultrasonic cleaner, and then place them in a vacuum oven for drying to obtain the pretreated titanium-nickel foil and titanium foil;

[0009] Step 3, preparation of titanium-nickel-titanium-based layered composite material: the pretreated titanium foil obtained in step 2 and the titanium-nickel foil are alternately stacked in sequence to form a laminated foil, and ensure that the bottom and top of the laminated foil are both pretreated titanium foils, and then the laminated foil is placed in a graphite mold for spark plasma sintering to obtain a titanium-nickel-titanium-based layered composite material.

[0010] In existing research, welding technology is mostly used for the connection between titanium-nickel alloy and titanium. However, there are great difficulties in using welding technology to prepare titanium-nickel-titanium-based composite materials with large foil contact area and multilayer structure. Existing welding technology can easily achieve butt joints, overlaps and other connections with small contact areas between different metals, but it is difficult to achieve efficient composites with large surface areas between different metals. In addition, the temperature at the welding joint position is high during the melting welding process, so the welding stress in this area is large, and welding cracks are very likely to occur. Although the diffusion welding based on the solid phase welding process has small deformation and residual stress at the joint and is not easy to crack, its welding temperature and time are long, and the titanium-nickel alloy is very easy to weaken the damping performance under the action of long-term high temperature, and the long-term high temperature process also has problems such as low preparation efficiency and energy waste. In order to make up for the above shortcomings, the present invention first prepares sintered foil by cutting, grinding, pickling, acetone ultrasonic cleaning, vacuum drying and other processes. Then, the foils are stacked in order according to titanium and titanium nickel, and the upper and lower surfaces of the laminated foils are ensured to be titanium all the time, and finally the rapid preparation of high-damping titanium-nickel-titanium-based composite materials with no interface defects is realized by the spark plasma sintering process. The spark plasma sintering technology adopted in the present invention can generate discharge plasma on the surface of titanium nickel and titanium foil, so that the high activation of the surface of titanium nickel and titanium foil can be realized, thereby greatly reducing the sintering temperature and the heat preservation time. On the one hand, the lower sintering temperature and time can realize the efficient preparation of the material. On the other hand, at low temperature and short time, the reaction degree of the interface is weak, and the influence on the composition of the titanium-nickel alloy reinforcement phase is low, so the damping characteristics of the titanium-nickel alloy can be greatly retained. In addition, compared with melting welding, the preparation process adopted in the present invention belongs to solid phase connection, so the interface bonding is better, and it is not easy to produce defects such as macro cracks and holes, so it can be used as a structural material.

[0011] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects is characterized in that the diameter of the rounded corner after the rounded corner treatment in step 1 is 6 mm to 8 mm. The preferred rounded corner size fully avoids stress concentration in the foil during the subsequent sintering process and improves the bonding quality of the high-damping titanium-nickel-titanium-based composite material.

[0012] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects is characterized in that the grinding depth of the cross section in step 2 is 50 μm to 100 μm. The preferred grinding depth fully removes the heat-affected zone generated during the wire cutting process, which is conducive to ensuring the quality of the high-damping titanium-nickel-titanium-based composite material.

[0013] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects is characterized in that during the grinding process in step 2, the titanium-nickel foil and the titanium foil are placed in anhydrous ethanol for cooling at intervals of 20s to 30s. The above-mentioned interval cooling process avoids overheating of the foil surface during the grinding process, which affects its surface quality and deteriorates the bonding effect between the foils during the subsequent sintering process.

[0014] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects is characterized in that the pickling solution used in the pickling in step 2 is composed of HF, HNO3 and H2O in a volume ratio of 1:3:15, and the pickling time is 15s to 25s; the ultrasonic cleaning time is 15min to 25min. The preferred pickling solution and pickling time not only ensure the full removal of the oxide film on the surface of the foil, but also etch uniform micro-pits on the surface of the foil, thereby increasing the contact area of ​​the foil surface and facilitating subsequent rapid sintering and bonding. The preferred ultrasonic cleaning time is conducive to the full removal of the organic film on the surface of the foil.

[0015] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects is characterized in that the drying temperature in step 2 is 100° C. to 200° C., the drying time is 3 min to 5 min, and the vacuum degree is 0.2 Pa to 0.5 Pa. The above-mentioned preferred drying process parameters ensure rapid drying of the foil while avoiding secondary oxidation of its surface.

[0016] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium-based matrix composite material with no interface defects is characterized in that the temperature of the spark plasma sintering in step 3 is 500°C to 600°C, the sintering time is 3min to 5min, the sintering pressure is 30MPa to 50MPa, and the sintering vacuum is 0.5Pa to 1.2Pa. The above-mentioned preferred sintering process ensures excellent interface bonding while reducing the sintering temperature and shortening the insulation time, thereby achieving the goal of saving energy and improving preparation efficiency.

[0017] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium matrix composite material with no interface defects is characterized in that the spark plasma sintering in step 3 adopts a gradient heating mode: firstly, the temperature is raised to 400°C at a heating rate of 30°C / min to 50°C / min, and then the temperature is further raised to the spark plasma sintering temperature at a heating rate of 20°C / min to 40°C / min. The above-mentioned preferred gradient heating mode ensures uniform heating inside the laminated foil, avoids temperature surges, and increases sintering thermal stress.

[0018] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects is characterized in that the volume fraction of the titanium-nickel layer in the titanium-nickel-titanium-based composite material in step 3 is 30% to 35%. The volume fraction of the titanium-nickel layer ensures the structural characteristics of the titanium-nickel-titanium-based composite material with titanium as the matrix and titanium-nickel as the reinforcement phase, and avoids excessive increase in the density of the composite material due to excessive content of the titanium-nickel layer, which is not conducive to application.

[0019] The above-mentioned method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects is characterized in that the thickness of the interfacial metal compound reaction layer formed between adjacent titanium-nickel foils and titanium foils in the titanium-nickel-titanium-based composite material in step 3 is 0.25 μm to 2.03 μm. The thickness of the interfacial metal compound reaction layer ensures that the titanium-nickel foil and the titanium foil are effectively combined without excessively changing the composition of the titanium-nickel foil, which helps to retain the high damping enhancement effect of the titanium-nickel alloy.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The present invention cuts and pre-treats titanium foil and titanium-nickel foil, stacks them, and performs spark plasma sintering. The low-temperature short-time sintering method is used to reduce the degree of interface reaction between the titanium foil and the titanium-nickel foil, reduce the influence on the composition of the titanium-nickel foil, retain the high damping enhancement characteristics of the titanium-nickel alloy, and realize the rapid preparation of high-damping titanium-nickel-titanium-based composite materials with no interface defects.

[0022] 2. The composite material of the present invention adopts a layered configuration design, and utilizes the characteristics of the layered structure composite material with higher fracture work, which effectively inhibits the premature necking of the metal foil and the localization of strain during the sintering process. In addition, when deformation fails, the cracks are passivated and deflected multiple times between the layer interfaces of the composite material, which is beneficial to increase the strength and toughness of the composite material and improve the comprehensive performance of the titanium-nickel-titanium-based layered composite material.

[0023] 3. Compared with the traditional welding process which can only achieve the small contact area docking and overlapping between titanium-nickel alloy and titanium, the spark plasma sintering process adopted in the present invention realizes the large surface area combination between titanium-nickel foil and titanium foil, thereby realizing the efficient preparation of titanium-nickel-titanium based layered composite materials.

[0024] 4. Compared with the melting welding joints where the stress is large and welding cracks are easily generated, which affect the material properties, the spark plasma sintering process adopted in the present invention is a solid-state combination, and the interface thermal stress between the titanium-nickel foil and the titanium foil is small, no obvious holes or cracks are generated, and the deformation and residual stress at the interface are small, which is beneficial to improve the overall performance of the titanium-nickel-titanium-based matrix composite material, so that it can be used as a structural material.

[0025] 5. Compared with the diffusion welding process based on solid phase welding, the spark plasma sintering process adopted in the present invention realizes the activation of the titanium-nickel foil and the surface of the titanium foil during the preparation process, significantly shortens the sintering time, and reduces the sintering temperature, thereby avoiding excessive fluctuations in the composition of the titanium-nickel alloy and retaining its original high damping performance.

[0026] 6. The present invention adjusts the size of the high-damping titanium-nickel-titanium-based composite material by simply adjusting the thickness of each layer of titanium-nickel foil and titanium foil and the number of stacked layers. No secondary deformation is required, the process flow is simple, the preparation time is short, and energy consumption is saved, which is conducive to industrial development.

[0027] 7. The titanium-nickel-titanium matrix composite material prepared by the present invention has excellent damping performance in a wide temperature range, and its damping factor reaches 0.042, 0.018 and 0.016 at -44°C, 32°C and 80°C, respectively, which is much higher than its matrix metal titanium.

[0028] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a SEM image of the titanium-nickel-titanium based matrix composite material prepared in Example 1 of the present invention.

[0030] Figure 2 This is a SEM image of the interface of the titanium-nickel-titanium based layered composite material prepared in Example 1 of the present invention.

[0031] Figure 3 This is the EDS line scanning spectrum of the interface of the titanium-nickel-titanium based layered composite material prepared in Example 1 of the present invention.

[0032] Figure 4 It is a damping performance curve diagram of the titanium nickel-titanium matrix composite material prepared in Example 1 of the present invention and the titanium foil after heat treatment in Comparative Example 1. DETAILED DESCRIPTION

[0033] Example 1

[0034] This embodiment includes the following steps:

[0035] Step 1, cutting of titanium-nickel foil and titanium foil: using fast wire EDM wire cutting, the titanium-nickel foil and titanium foil are cut into rectangular titanium-nickel foil and titanium foil respectively, and then the right angles of the rectangular titanium-nickel foil and titanium foil are chamfered, and the diameter of the rounded corners after the chamfering treatment is 6 mm;

[0036] Step 2, pretreatment of titanium-nickel foil and titanium foil: use coarse sandpaper to polish the cross-section of the titanium-nickel foil and titanium foil after the rounding treatment in step 1, the polishing depth is 50μm, and then use fine sandpaper to polish the upper and lower surfaces of the titanium-nickel foil and titanium foil until the surface is bright, and place the titanium-nickel foil and titanium foil in anhydrous ethanol for cooling every 20s during the polishing process, and place the polished titanium-nickel foil and titanium foil in a pickling solution composed of HF, HNO3 and H2O in a volume ratio of 1:3:15 for pickling for 15s, and then continue to place them in an acetone solution and use an ultrasonic cleaner to clean them for 15min, and then place them in a vacuum oven for drying, the drying temperature is 100°C, the vacuum degree is 0.2Pa, and the drying time is 3min, to obtain the pretreated titanium-nickel foil and titanium foil;

[0037] Step 3, preparation of a titanium-nickel-titanium-based layered composite material: the pretreated titanium foil obtained in step 2 and the titanium-nickel foil are alternately stacked in sequence to form a laminated foil, and it is ensured that the bottom and top of the laminated foil are both pretreated titanium foils, and then the laminated foil is placed in a graphite mold for spark plasma sintering to obtain a titanium-nickel-titanium-based layered composite material; the spark plasma sintering process is: firstly heating to 400°C at a heating rate of 30°C / min, and then continuing to heat to 600°C at a heating rate of 20°C / min, the sintering time is 5min, the sintering pressure is 40MPa, and the sintering vacuum is 0.8Pa; the volume fraction content of the titanium-nickel layer in the titanium-nickel-titanium-based layered composite material is 35%, and the thickness of the interface metal compound reaction layer formed between adjacent titanium-nickel foils and titanium foils in the titanium-nickel-titanium-based layered composite material is 2.03μm.

[0038] Figure 1The SEM image of the titanium-nickel-titanium matrix composite material prepared in this embodiment is shown in FIG. Figure 1 It can be seen that the titanium-nickel-titanium-based layered composite material has an obvious layered structure, each layer is straight and uniform, and the microstructure has no obvious defects.

[0039] Figure 2 This is a SEM image of the interface of the titanium-nickel-titanium based composite material prepared in this example. Figure 2 It can be seen that the interface area of ​​the titanium-nickel-titanium-based composite material is well bonded, without holes or through cracks; at the same time, a uniform and continuous interfacial metal compound reaction layer is generated at the interface between the titanium-nickel alloy layer and the titanium layer, and the thickness is only 2.03μm. The thickness of the interfacial reaction layer is conducive to the bonding between the foils, thereby improving the overall performance of the composite material.

[0040] Figure 3 This is the EDS line scanning spectrum of the titanium-nickel-titanium based matrix composite interface prepared in this example. Figure 3 It can be seen that the mutual diffusion distance between titanium and nickel elements at the interface of the titanium-nickel-titanium-based composite material is only 3.04 μm, which ensures that the composition of the titanium-nickel layer does not fluctuate basically, which is beneficial to maintaining the high damping enhancement effect of the titanium-nickel alloy.

[0041] Comparative Example 1

[0042] This comparative example comprises the following steps:

[0043] Step 1: Cutting of titanium foil: Using fast wire EDM, cut the titanium foil into rectangular titanium foil, and then perform chamfering on the right angles of the rectangular titanium foil. The diameter of the chamfered corners after the chamfering is 6 mm.

[0044] Step 2, pretreatment of titanium foil: use coarse sandpaper to grind the cross section of the titanium foil after the rounding treatment in step 1, the grinding depth is 50μm, and then use fine sandpaper to grind the upper and lower surfaces of the titanium foil until the surface is bright, and place the titanium foil in anhydrous ethanol for cooling every 20s during the grinding process, and place the polished titanium foil in a pickling solution composed of HF, HNO3 and H2O in a volume ratio of 1:3:15 for pickling for 15s, and then continue to place it in an acetone solution and use an ultrasonic cleaner to clean it for 15min, and then place it in a vacuum oven for drying, the drying temperature is 100°C, the vacuum degree is 0.2Pa, and the drying time is 3min, to obtain the pretreated titanium foil;

[0045] Step 3, heat treatment of titanium foil: place the pretreated titanium foil obtained in step 2 in a graphite mold for heat treatment to obtain a heat-treated titanium foil; the heat treatment process is: first increase the temperature to 400°C at a heating rate of 30°C / min, and then continue to increase the temperature to 600°C at a heating rate of 20°C / min, the heat treatment time is 5 minutes, and the vacuum degree is 0.8Pa.

[0046] Figure 4 The damping performance curves of the titanium-nickel-titanium matrix composite material prepared in Example 1 of the present invention and the titanium foil after heat treatment in Comparative Example 1 are shown in FIG. Figure 4 It can be seen that the damping performance of the titanium foil after heat treatment in Comparative Example 1 is relatively low, and the damping factors at -44°C, 32°C and 80°C are only 0.003, 0.008 and 0.008, respectively. The extremely low damping factor limits the use of metal titanium for aerospace in key components for vibration reduction and noise reduction. In contrast, the damping factors of the titanium-nickel-titanium-based matrix composite material prepared in Example 1 reached 0.042, 0.018 and 0.016 at -44°C, 32°C and 80°C, respectively, which are 1300%, 125% and 100% higher than titanium at the same temperature, respectively. This shows that the titanium-nickel-titanium-based matrix composite material prepared by combining titanium-nickel alloy with titanium in the present invention effectively improves the damping performance of titanium and broadens its scope of application in the aerospace field.

[0047] Example 2

[0048] This embodiment includes the following steps:

[0049] Step 1, cutting of titanium-nickel foil and titanium foil: using fast wire EDM wire cutting, the titanium-nickel foil and titanium foil are cut into rectangular titanium-nickel foil and titanium foil respectively, and then the right angles of the rectangular titanium-nickel foil and titanium foil are chamfered, and the diameter of the chamfer after the chamfering is 7 mm;

[0050] Step 2, pretreatment of titanium-nickel foil and titanium foil: use coarse sandpaper to polish the cross-section of the titanium-nickel foil and titanium foil after the rounding treatment in step 1, the polishing depth is 75μm, and then use fine sandpaper to polish the upper and lower surfaces of the titanium-nickel foil and titanium foil until the surface is bright, and place the titanium-nickel foil and titanium foil in anhydrous ethanol for cooling every 25s during the polishing process, and place the polished titanium-nickel foil and titanium foil in a pickling solution composed of HF, HNO3 and H2O in a volume ratio of 1:3:15 for pickling for 20s, and then continue to place them in an acetone solution and use an ultrasonic cleaner to clean them for 20min, and then place them in a vacuum oven for drying, the drying temperature is 150°C, the vacuum degree is 0.4Pa, and the drying time is 4min, to obtain the pretreated titanium-nickel foil and titanium foil;

[0051] Step 3, preparation of a titanium-nickel-titanium-based layered composite material: the pretreated titanium foil obtained in step 2 and the titanium-nickel foil are alternately stacked in sequence to form a laminated foil, and it is ensured that the bottom and top of the laminated foil are both pretreated titanium foils, and then the laminated foil is placed in a graphite mold for spark plasma sintering to obtain a titanium-nickel-titanium-based layered composite material; the process of the spark plasma sintering is: firstly heating to 400°C at a heating rate of 50°C / min, and then continuing to heat to 550°C at a heating rate of 40°C / min, the sintering time is 4min, the sintering pressure is 30MPa, and the sintering vacuum is 1.2Pa; the volume fraction content of the titanium-nickel layer in the titanium-nickel-titanium-based layered composite material is 33%, and the thickness of the interface metal compound reaction layer formed between adjacent titanium-nickel foils and titanium foils in the titanium-nickel-titanium-based layered composite material is 0.84μm.

[0052] Example 3

[0053] This embodiment includes the following steps:

[0054] Step 1, cutting of titanium-nickel foil and titanium foil: using fast wire EDM wire cutting, the titanium-nickel foil and titanium foil are cut into rectangular titanium-nickel foil and titanium foil respectively, and then the right angles of the rectangular titanium-nickel foil and titanium foil are chamfered, and the diameter of the rounded corners after the chamfering treatment is 8 mm;

[0055] Step 2, pretreatment of titanium-nickel foil and titanium foil: use coarse sandpaper to polish the cross-section of the titanium-nickel foil and titanium foil after the rounding treatment in step 1, the polishing depth is 100 μm, and then use fine sandpaper to polish the upper and lower surfaces of the titanium-nickel foil and titanium foil until the surface is bright, and place the titanium-nickel foil and titanium foil in anhydrous ethanol for cooling every 30 seconds during the polishing process, and place the polished titanium-nickel foil and titanium foil in a pickling solution composed of HF, HNO3 and H2O in a volume ratio of 1:3:15 for pickling for 25 seconds, and then continue to place them in an acetone solution and use an ultrasonic cleaner to clean them for 25 minutes after taking them out, and then place them in a vacuum oven for drying, the drying temperature is 200°C, the vacuum degree is 0.5Pa, and the drying time is 5 minutes to obtain the pretreated titanium-nickel foil and titanium foil;

[0056] Step 3, preparation of a titanium-nickel-titanium-based layered composite material: the pretreated titanium foil obtained in step 2 and the titanium-nickel foil are alternately stacked in sequence to form a laminated foil, and it is ensured that the bottom and top of the laminated foil are both pretreated titanium foils, and then the laminated foil is placed in a graphite mold for spark plasma sintering to obtain a titanium-nickel-titanium-based layered composite material; the spark plasma sintering process is: firstly heating to 400°C at a heating rate of 40°C / min, and then continuing to heat to 500°C at a heating rate of 30°C / min, the sintering time is 3min, the sintering pressure is 50MPa, and the sintering vacuum is 0.5Pa; the volume fraction content of the titanium-nickel layer in the titanium-nickel-titanium-based layered composite material is 30%, and the thickness of the interface metal compound reaction layer formed between adjacent titanium-nickel foils and titanium foils in the titanium-nickel-titanium-based layered composite material is 0.25μm.

[0057] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent changes made to the above embodiments according to the technical essence of the invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects, characterized in that: The method comprises the following steps: Step 1, cutting of titanium-nickel foil and titanium foil: using fast wire electric spark wire cutting, the titanium-nickel foil and titanium foil are cut into rectangular titanium-nickel foil and titanium foil respectively, and then the right angles of the rectangular titanium-nickel foil and titanium foil are chamfered; Step 2, pretreatment of titanium-nickel foil and titanium foil: use coarse sandpaper to polish the cross section of the titanium-nickel foil and foil after the rounding treatment in step 1, and then use fine sandpaper to polish the upper and lower surfaces of the titanium-nickel foil and foil until the surface is bright, place the polished titanium-nickel foil and titanium foil in a pickling solution for pickling, take them out and continue to place them in an acetone solution for cleaning with an ultrasonic cleaner, and then place them in a vacuum oven for drying to obtain the pretreated titanium-nickel foil and titanium foil; Step 3, preparation of a titanium-nickel-titanium-based layered composite material: the pretreated titanium foil obtained in step 2 and the titanium-nickel foil are alternately stacked in sequence to form a laminated foil, and it is ensured that the bottom and top of the laminated foil are both pretreated titanium foils, and then the laminated foil is placed in a graphite mold for spark plasma sintering to obtain a titanium-nickel-titanium-based layered composite material; the spark plasma sintering temperature is 500°C to 600°C, the sintering time is 3min to 5min, the sintering pressure is 30MPa to 50MPa, and the sintering vacuum is 0.5Pa to 1.2Pa. The spark plasma sintering adopts a gradient heating mode: first, the temperature is increased to 400°C at a heating rate of 30°C / min to 50°C / min, and then the temperature is continued to be increased to the spark plasma sintering temperature at a heating rate of 20°C / min to 40°C / min; the volume fraction content of the titanium-nickel layer in the titanium-nickel-titanium-based layered composite material is 30% to 35%.

2. The method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects according to claim 1, characterized in that: The rounded corner diameter after the rounding treatment in step 1 is 6 mm to 8 mm.

3. The method for rapidly preparing a high-damping titanium-nickel-titanium-based matrix composite material with no interface defects according to claim 1, characterized in that: The grinding depth of the cross section in step 2 is 50 μm to 100 μm.

4. The method for rapidly preparing a high-damping titanium-nickel-titanium-based composite material with no interface defects according to claim 1, characterized in that: During the polishing process described in step 2, the titanium-nickel foil and the titanium foil are placed in anhydrous ethanol to cool down every 20 seconds to 30 seconds.

5. The method for rapidly preparing a high-damping titanium-nickel-titanium-based matrix composite material with no interface defects according to claim 1, characterized in that: The pickling solution used in the pickling in step 2 is composed of HF, HNO3 and H2O in a volume ratio of 1:3:15, and the pickling time is 15s to 25s; the ultrasonic cleaning time is 15min to 25min.

6. The method for rapidly preparing a high-damping titanium-nickel-titanium-based matrix composite material with no interface defects according to claim 1, characterized in that: The drying temperature in step 2 is 100° C. to 200° C., the drying time is 3 min to 5 min, and the vacuum degree is 0.2 Pa to 0.5 Pa.

7. The method for rapidly preparing a high-damping titanium-nickel-titanium-based matrix composite material with no interface defects according to claim 1, characterized in that: The thickness of the interfacial metal compound reaction layer formed between adjacent titanium-nickel foils and titanium foils in the titanium-nickel-titanium based layered composite material in step three is 0.25 μm to 2.03 μm.

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