Process for preparing metal base composite material
A composite material and preparation technology, which is applied in the field of metal matrix composite preparation technology, can solve the problems of reducing the performance of composite materials
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Embodiment 1
[0016] Example 1: Preparation of nano-alumina particle-reinforced aluminum matrix composite sheet. According to the requirements of material properties, different process parameters are selected. The L5-1 aluminum plate is 1000mm long, 200mm wide, and 2mm thick; the thickness of aluminum oxide between the two layers of aluminum plates is 0.01mm, and ethanol is used as a mixing agent to evenly coat the surface of the pretreated aluminum plate, and the aluminum plate is placed for 10 minutes after spot welding. Ethanol is volatilized; the feed speed of cold rolling is 0.4m / min, and the reduction ratio is 80%. The annealing temperature is 250°C and the temperature is kept for 2h. The prepared alumina particle reinforced aluminum matrix composite plate is a plastic material with uniform structure and composition. After heat treatment, the distribution of oxygen element on one side of the aluminum plate increases significantly, and the yield strength σ 0.2 362Mpa, tensile strengt...
Embodiment 2
[0017] Example 2: Preparation of nano-alumina particle-reinforced magnesium-based composite board. Process parameters are selected according to the requirements for material properties. The AZ91 magnesium plate is 500mm long, 200mm wide, and 2mm thick; the thickness of aluminum oxide between the magnesium plates is 0.1mm; the feed rate of cold rolling is 0.2m / min, and the reduction rate is 70%; aging at 150°C for 10h. A slight interfacial reaction occurred between alumina powder and magnesium, and the yield strength σ 0.2 Reach 340Mpa, tensile strength σ b It is 386Mpa, and the room temperature elongation δ is 6%.
Embodiment 3
[0018] Example 3: Preparation of silicon carbide particle-reinforced magnesium-based composite plate. Process parameters are selected according to the requirements for material properties. The AZ91 magnesium plate is 500mm long, 200mm wide, and 2mm thick; after mixing silicon carbide and ethanol, it is uniformly coated and pretreated on the surface of the magnesium plate, and the thickness is 0.1mm; the feed speed of cold rolling is 0.2m / min, and the reduction rate 60%; aging at 200°C for 12h after rolling. Silicon carbide and magnesium matrix are well combined. After testing, the yield strength of the composite material σ 0.2 Reach 335Mpa, tensile strength σ b It is 394Mpa, and the room temperature elongation δ is 7%.
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