Ultrasound-assisted auxiliary welding method for silicon carbide particle-reinforced aluminum matrix composite (SiCp-Al) with pure Zn as intermediate reaction material layer
A technology of silicon carbide particles and reactive materials, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of difficult formation of metallurgical bonding, hindering the contact between liquid intermediate reaction material layer and aluminum alloy, etc., and achieve short welding time , good welding effect and high mechanical properties
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Embodiment 1
[0063] An ultrasonic-assisted welding method of silicon carbide particle-reinforced aluminum matrix composites with pure Zn as an intermediate reaction material layer, figure 1 As shown, including the base material 3 to be welded and the intermediate reaction material layer 4, the base material 3 to be welded is selected from 40%-55% silicon carbide particle reinforced aluminum matrix composite material, including the following steps,
[0064] intermediate reaction material layer screening step,
[0065] Condition 1, the melting temperature of the intermediate reaction material layer 4 is 195-205°C lower than the melting point of the base material 3 to be welded, or the eutectic temperature between the intermediate reaction material layer 4 and the main elements of the base material 3 to be welded is lower than that of the base material 3 to be welded Material 3 has a melting point of 150-300°C, condition 2, the maximum solid solubility between the intermediate reaction materi...
Embodiment 2
[0086] The main structure, principle and effect of this embodiment are the same as those of Embodiment 1, and will not be repeated here. The difference is that the base material 3 to be welded is made of 40% silicon carbide particle-reinforced aluminum-based composite material, and the intermediate reaction material layer 4 The thickness is selected as 0.3mm.
[0087] In the step of breaking the oxide film and releasing the enhanced phase, the reaction temperature of the intermediate reaction material layer 4 is controlled at 400° C., and the welding ultrasonic action time is applied to the assembly to be welded for 10 seconds; In the distributing step, the ultrasonic welding time is applied to the components to be welded for 210 seconds, and the reaction temperature of the intermediate reaction material layer 4 is controlled at 430°C.
[0088] Taking the aluminum matrix composite material reinforced with 40% silicon carbide particles as the base material 3 to be welded as an ...
Embodiment 3
[0124] The main structure, principle and effect of this embodiment are the same as those of Embodiment 1, and will not be repeated here. The difference is that the base material 3 to be welded is made of 55% silicon carbide particle-reinforced aluminum-based composite material, and the intermediate reaction material layer 4 The thickness is selected as 0.5mm.
[0125] In the step of breaking the oxide film and releasing the enhanced phase, the reaction temperature of the intermediate reaction material layer 4 is controlled at 400° C., and the welding ultrasonic action time is applied to the assembly to be welded for 10 seconds; In the distribution step, the welding ultrasonic action time is applied to the components to be welded for 120 seconds, and the reaction temperature of the intermediate reaction material layer 4 is controlled at 460°C to obtain a fully connected layer structure with uniformly dispersed SiC particles, as shown in Figure 44 shown.
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