Preparation method of ultra-fine grain AZ61 magnesium alloy bulk material
A technology of bulk material and magnesium alloy, applied in the field of ultra-fine grain AZ61 magnesium alloy bulk material preparation, can solve the problems of complicated operation process, unsuitable for processing large-sized bulk materials, unsuitable for industrialized production, etc., to ensure plastic forming ability Effect
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[0026] The material selected in this embodiment is AZ61 magnesium alloy, the specific composition is Mg-3Al-1Zn, and the length, width and height of the sample before thermal processing are 35 mm, 35 mm and 40 mm, respectively.
[0027] A method for preparing an ultrafine-grained AZ61 magnesium alloy bulk material, comprising the following steps:
[0028] 1) Heat treatment process: put the sample in an iron box and cover it with graphite-containing sand, put it in a heat treatment furnace for heating and heat preservation, set the heating temperature to 400°C, and keep it warm for 10 hours after reaching the set temperature, so that the continuous network distribution The second phase of the alloy basically dissolves into the matrix, and the sample is taken out and air-cooled, so that the second phase does not have time to precipitate, and a single-phase solid solution with basically uniform properties is obtained. The microstructure of the alloy before and after heat treatment...
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