Short-flow rolling preparation process of high-strength and high-plasticity AlN/AZ91D magnesium base composite material plate
A composite material and preparation process technology, applied in the field of short-flow rolling preparation technology of high-strength and high-plastic AlN/AZ91D magnesium-based composite material sheets, can solve the problems of poor room temperature deformation ability, high strength, low plasticity, etc. The effect of grain growth, large pass reduction and less annealing times
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[0031] A rectangular plate with a size of 80×50×10 was cut from the AlN / AZ91 magnesium-based composite ingot as the original billet, and the preparation method of the composite ingot is described in patent 201510882938.5;
[0032] Step 1: Put the AlN / AZ91 magnesium-based composite rectangular plate blank into a heat treatment furnace, solid solution at 400°C-425°C for 20-30h, and then put it into clean water at 25°C for water quenching;
[0033] Step 2: remove the scale on the surface of the plate material after water quenching, and prepare for cold rolling;
[0034]Step 3: The rotation speed of the upper and lower rolls during the cold rolling process is 20-40r / min, the cold rolling reduction of the first pass is 10% to 15%, starting from the second pass, the cold rolling reduction of each pass in the future The lower amount is 15-25%, the cumulative rolling amount is 80%, the annealing temperature between passes is 300-350°C, and the annealing is 5-15min.
[0035] The final...
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