NiTi particle layer reinforced aluminum-based composite material and preparation method thereof
By introducing NiTi particles and Al particles of different efficiencies into the aluminum matrix, the NiTi particle layer is formed, which solves the problem of insufficient damping performance of traditional aluminum alloys and achieves the improvement of high damping performance in the low temperature and room temperature range.
Patent Information
- Application Number
- CN202411265865.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-01-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The damping performance of traditional aluminum alloys is low and cannot meet the needs of vibration-sensitive equipment. Existing research has not yet explored the use of NiTi alloy particle layer to improve the damping performance of aluminum alloy.
NiTi particles and pure Al particles with different efficiencies are introduced into the aluminum matrix. NiTi particles are formed between the aluminum plates after pre-aging treatment and mixing. NiTi particles are prepared by using the phase change damping characteristics of NiTi particles and the interfacial damping behavior between particles. Layer reinforced aluminum-based composite material.
The damping performance of composite materials is significantly improved, and the internal dissipation value is significantly higher than that of aluminum matrix materials in different temperature ranges, especially in the low temperature and room temperature ranges.
Smart Images
Figure CN119283449A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a NiTi particle layer reinforced aluminum-based composite material and a preparation method thereof. Background Art
[0002] With the development of industrialization, the problems caused by vibration and noise have attracted more and more attention from the industry. In recent years, the development of new composite materials with good mechanical properties and high damping capacity has become an important research direction. Aluminum (Al) alloy has the advantages of light weight, excellent mechanical properties and good corrosion resistance, and is an important structural material. However, traditional commercial aluminum alloys are considered to be low-damping metals and cannot be used in vibration-sensitive equipment. At present, there are many studies on the damping properties of aluminum alloys, but the improvement of the damping properties of aluminum alloys is still not ideal. The use of composite technology to composite second phase particles into the aluminum matrix can effectively enhance the damping capacity of aluminum alloys. NiTi alloy has shape memory effect and good superelasticity, and exhibits high damping characteristics at low temperature and room temperature. When NiTi alloy undergoes martensitic phase transformation, due to the austenite-martensite phase interface effect, martensite twin boundary motion and the contribution of the phase transformation itself, the alloy undergoes phase transformation damping behavior and presents a corresponding phase transformation damping peak, which makes the alloy exhibit high damping performance in the low temperature range. The phase transformation damping temperature range of NiTi alloy can be effectively changed by aging treatment. In addition, the introduction of interparticle interfaces with weak bonding force into the alloy is conducive to improving its high-temperature damping performance. Therefore, the use of composite technology to introduce an aged NiTi alloy particle layer into the aluminum matrix is expected to improve the low-temperature and room-temperature damping properties of the aluminum alloy by utilizing the phase change damping characteristics of the NiTi particles, while enabling the aluminum alloy to have good high-temperature damping properties through the damping behavior of the interparticle interface. At present, there are no reports on the use of NiTi alloy particle layers to improve the damping properties of aluminum alloys. Summary of the invention
[0003] The purpose of the present invention is to provide a NiTi particle layer reinforced aluminum-based composite material with high damping characteristics and a preparation method thereof.
[0004] In the NiTi particle layer reinforced aluminum-based composite material involved in the present invention, the reinforcing phase is NiTi particles (particle size 10-40 μm) in different aging states, pure Al particles (particle size 10-30 μm) are used as bonding materials in the particle layer, and the matrix is an aluminum alloy plate.
[0005] The specific steps of the preparation method of the NiTi particle layer reinforced aluminum-based composite material are as follows:
[0006] (1) The original NiTi particles were loaded into a quartz tube and pre-aged in an argon protective atmosphere at 450-550 °C for 1-15 h in a vacuum tube furnace to obtain NiTi reinforced particles with different pre-aging states.
[0007] (2) The Al particles and the aged NiTi particles were placed in a V-type mixer and mixed for 6 h to obtain prefabricated Al / NiTi mixed particles. The volume content of NiTi particles in the Al-based composite material was approximately 6%.
[0008] (3) The Al plate is annealed or solution treated, then the surface is polished with sandpaper and cleaned with alcohol to remove the oxide layer. The prefabricated Al / NiTi mixed particles are evenly placed between two annealed or solution-treated Al plates to form a prefabricated composite plate, and the prefabricated composite plate is rolled and compounded to obtain a NiTi particle layer reinforced aluminum matrix composite material.
[0009] The NiTi particle layer reinforced aluminum-based composite material prepared by the present invention has excellent damping performance. At 320°C, the internal friction value of the composite material is 0.0844-0.0988, which is 24%-485% higher than that of the corresponding aluminum-based material; at room temperature (27°C), the internal friction value of the composite material is 0.0074-0.0117, which is 68%-144% higher than that of the corresponding aluminum-based material; at -80°C, the internal friction value of the composite material is 0.0067-0.0105, which is 63%-152% higher than that of the corresponding aluminum-based material. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 Metallographic structure photos of the composite material in Example 1: (a) 3D-X ray image, (b) SEM image.
[0011] Figure 2 Internal friction-temperature curves of the composite material and 6061 Al alloy in Example 1 within the test range of -90-120°C.
[0012] Figure 3 Internal friction-temperature curves of the composite material and 6061 Al alloy in Example 1 within the test range of 120-360°C. DETAILED DESCRIPTION
[0013] Example 1
[0014] The original NiTi particles were placed in a quartz tube and pre-aged at 450℃ for 1 h in an argon protective atmosphere using a vacuum tube furnace to obtain pre-aged NiTi reinforced particles; Al particles and aged NiTi particles were placed in a V-type mixer and mixed for 6 h to obtain prefabricated Al / NiTi mixed particles, and the volume content of NiTi particles in the Al-based composite material was about 6%; 6061Al plate was solution treated, then surface polished with 800# sandpaper, and cleaned with alcohol to remove the oxide layer. The prefabricated Al / NiTi mixed particles were evenly placed between two 6061Al plates in the solid solution state to form a prefabricated composite plate, and the prefabricated composite plate was rolled and compounded to obtain the NiTi particle layer reinforced aluminum-based composite material.
[0015] Example 2
[0016] The original NiTi particles were placed in a quartz tube and pre-aged at 450℃ for 15 h in an argon protective atmosphere using a vacuum tube furnace to obtain pre-aged NiTi reinforced particles; Al particles and aged NiTi particles were placed in a V-type mixer and mixed for 6 h to obtain prefabricated Al / NiTi mixed particles, and the volume content of NiTi particles in the Al-based composite material was about 6%; 6061Al plate was solution treated, then surface polished with 800# sandpaper, and cleaned with alcohol to remove the oxide layer. The prefabricated Al / NiTi mixed particles were evenly placed between two 6061Al plates in the solid solution state to form a prefabricated composite plate, and the prefabricated composite plate was rolled and compounded to obtain the NiTi particle layer reinforced aluminum-based composite material.
[0017] Example 3
[0018] The original NiTi particles were placed in a quartz tube and pre-aged at 550℃ for 3 h in an argon protective atmosphere using a vacuum tube furnace to obtain pre-aged NiTi reinforced particles; Al particles and aged NiTi particles were placed in a V-type mixer and mixed for 6 h to obtain prefabricated Al / NiTi mixed particles, and the volume content of NiTi particles in the Al-based composite material was about 6%; the 5052Al plate was annealed, then polished with 800# sandpaper, and cleaned with alcohol to remove the oxide layer. The prefabricated Al / NiTi mixed particles were evenly placed between two annealed 5052Al plates to form a prefabricated composite plate, and the prefabricated composite plate was rolled and compounded to obtain the NiTi particle layer reinforced aluminum-based composite material.
[0019] The NiTi particle layer reinforced aluminum-based composite material prepared by the present invention has excellent damping performance, and its damping performance is significantly better than that of the aluminum-based material. At 320°C, the internal friction value of the composite material can reach a maximum of 0.0988, which is 458% higher than that of the corresponding aluminum-based material; at room temperature (27°C), the internal friction value of the composite material can reach a maximum of 0.0117, which is 144% higher than that of the corresponding aluminum-based material; at -80°C, the internal friction value of the composite material can reach a maximum of 0.0105, which is 123% higher than that of the corresponding aluminum-based material.
[0020] Table 1 Damping performance test results of the NiTi particle layer reinforced aluminum-based composite material and its aluminum matrix material obtained in the present invention
[0021]
Claims
1. A NiTi particle layer reinforced aluminum-based composite material, characterized in that: The composite material has excellent damping performance and is significantly better than the aluminum matrix material; the damping performance of the aluminum matrix composite material is synergistically enhanced by utilizing the excellent intrinsic damping characteristics of NiTi particles and the damping behavior of the interface between particles in the particle layer; at 320°C, the internal friction value of the composite material can reach a maximum of 0.0988, which is 458% higher than that of its corresponding aluminum matrix material; at room temperature (27°C), the internal friction value of the composite material can reach a maximum of 0.0117, which is 144% higher than that of its corresponding aluminum matrix material; at -80°C, the internal friction value of the composite material can reach a maximum of 0.0105, which is 123% higher than that of its corresponding aluminum matrix material.
2. The NiTi particle layer reinforced aluminum-based composite material according to claim 1, characterized in that: The specific steps of the preparation method of the composite material are: (1) The original NiTi particles were placed in a quartz tube and pre-aged at 450-550 °C for 1-15 h in an argon protective atmosphere using a vacuum tube furnace to obtain NiTi reinforced particles in different pre-aging states; (2) Al particles and aged NiTi particles were placed in a V-type mixer and mixed for 6 h to obtain prefabricated Al / NiTi mixed particles. The volume content of NiTi particles in the Al-based composite material was about 6%. (3) The Al plate is annealed or solution treated, and then the surface is polished with sandpaper and cleaned with alcohol to remove the oxide layer; the prefabricated Al / NiTi mixed particles are evenly placed between two annealed or solution-treated Al plates to form a prefabricated composite plate, and the prefabricated composite plate is rolled and compounded to obtain a NiTi particle layer reinforced aluminum-based composite material.