High-toughness and high-neutron-absorption aluminum-based composite material preparation method and device
An aluminum-based composite material and a technology for preparing devices, which are applied in the field of aluminum-based composite materials, can solve problems such as low strength and toughness of composite materials, difficulty in infiltrating reinforcement particles and matrix, and prone to interfacial reactions, so as to achieve the effect of improving strength and toughness
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Embodiment 1
[0033] with K 2 ZrF 6 and KBF 4 As a reactant, according to generate 1vol% nano ZrB 2 The particles are chemically proportioned, and the mixed and ground reactant powder is dried at 200°C for 2 hours for later use; the pure aluminum is placed in a crucible, heated and melted by an induction coil, and when the temperature reaches 870°C, the mixed and ground reactant powder Add the powder; turn on the radial magnetic field device and the ultrasonic field device, the radial magnetic field power is 120kw, the current is 50A, the ultrasonic field power is 15kw, and the reaction is 30min. 20μm B 4 C particles, the speed is 20g / min. After the compounding is completed, let it stand, degas and remove the slag, and cast it after the temperature drops to 720°C. Finally get (5vol%B 4 C+1vol%ZrB 2 ) / Al composites. The tensile strength of the composite material is 210MPa, the yield strength is 120MPa, and the elongation is 23.5%.
[0034] figure 2 (5vol% B prepared by the device d...
Embodiment 2
[0036] With Al-Hf and Al-B alloys as reactants and 6016 as the matrix, 0.5vol% nanometer HfB is generated according to 2 The particles are chemically proportioned; 6016 aluminum is placed in a crucible and heated and melted by an induction coil. When the temperature reaches 870°C, Al-Hf and Al-B alloys are added; the radial magnetic field device and the ultrasonic field device are turned on, and the radial The magnetic field power is 110kw, the current is 45A, the ultrasonic field power is 13kw, the reaction is 30min, the melt temperature is reduced to 780-800℃, and then B with an average particle size of 15μm is added. 4 C particles, the speed is 20g / min. After the compounding is completed, let it stand, degas and remove the slag, and cast it after the temperature drops to 720°C. Finally get (10vol%B 4 C+0.5vol%HfB 2 ) / 6016Al composite material. The tensile strength of the composite material is 380MPa, the yield strength is 260MPa, and the elongation is 16.5%.
Embodiment 3
[0038] Al-Ti alloy and B 2 o 3 As a reactant, 6082 as a matrix, according to the generation of 0.3vol% nano TiB 2 The particles are stoichiometrically proportioned; 6082 aluminum is placed in a crucible, heated and melted by an induction coil, and when the temperature reaches 870°C, Al-Ti alloy and B 2 o 3 ; Turn on the radial magnetic field device and the ultrasonic field device, the power of the radial magnetic field is 110kw, the current is 45A, the power of the ultrasonic field is 13kw, and the reaction is 30min, the temperature of the melt is reduced to 780-800°C, and then the average particle size is 10μm. B 4 C particles, the speed is 20g / min. After the compounding is completed, let it stand, degas and remove the slag, and cast it after the temperature drops to 720°C. Finally get (15vol%B 4 C+0.3vol%TiB 2 ) / 6082Al composite material. The tensile strength of the composite material is 396MPa, the yield strength is 273MPa, and the elongation is 12.3%.
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