Method for preparing bimetallic composite through combination of solid-liquid compounding and drawing of solid aluminum materials
A technology of solid-liquid composite and composite materials, which is applied in the field of preparing bimetallic composites through solid-liquid composite casting and post-drawing combination process, can solve the problems of low performance, thermal cracking, and component segregation of interacting bimetallic composites, and achieves Improve mechanical properties and physical properties, avoid oxidation slag inclusion, improve shear performance
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Embodiment 1
[0033] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid compounding and drawing combination of solid aluminum, including the following steps:
[0034] Step 1. Perform thermal spraying zinc surface treatment on the solid 6101 extruded aluminum alloy material to be connected, and the thickness of the zinc layer is 10 μm;
[0035] Step 2. Presetting the surface-treated solid 6101 extruded aluminum alloy at the required position in the mold cavity;
[0036] Step 3: Melt the AZ91 magnesium alloy in the resistance furnace and pour it into the mold cavity. Using the processing technology of squeeze casting, the pouring temperature is 700 ° C, and the squeeze casting pressure is 60 MPa to form a metallurgical bond between aluminum and magnesium;
[0037] Step 4: Perform annealing treatment on the obtained 6101-AZ91 aluminum-magnesium bimetal drawing blank before drawing, the annealing temperature is 100°C, the annealing time is 300min, ...
Embodiment 2
[0041] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid compounding and drawing combination of solid aluminum, including the following steps:
[0042] Step 1. Electrogalvanizing surface treatment is performed on the solid A356 cast aluminum alloy preset material to be connected, and the thickness of the zinc layer is 0.1 μm;
[0043] Step 2, presetting the surface-treated solid A356 cast aluminum alloy in the required position in the mold cavity;
[0044] Step 3: Melt the AZ31 magnesium alloy in the resistance furnace and pour it into the mold cavity. Using the processing technology of squeeze casting, the pouring temperature is 660°C, and the squeeze casting pressure is 30MPa, so that the metallurgical bond between aluminum and magnesium is formed;
[0045] Step 4: Perform annealing treatment on the obtained A356-AZ31 aluminum-magnesium bimetallic drawing blank before drawing, the annealing temperature is 300°C, the annealing t...
Embodiment 3
[0049] This embodiment relates to a method for preparing a bimetallic composite material by solid-liquid compounding and drawing combination of solid aluminum, including the following steps:
[0050] Step 1. Perform thermal spraying zinc surface treatment on the solid pure aluminum preset material to be connected, and the thickness of the zinc layer is 15 μm;
[0051] Step 2. Presetting the surface-treated solid solid pure aluminum at the required position in the mold cavity;
[0052] Step 3: Melt the ZA-12 zinc alloy in the resistance furnace and pour it into the mold cavity. Using the metal mold casting process, the pouring temperature is 700 ° C to form a metallurgical bond between aluminum and zinc;
[0053] Step 4, drawing the obtained pure aluminum-ZA-12 aluminum-zinc bimetal, the process is direct drawing, the drawing temperature is 250°C, the diameter reduction ratio is 10 / 100, and the drawing speed is 20m / min;
[0054] Step 5. Put the obtained Al-Zn bimetallic compos...
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