Equal channel deformation mould for preparing block body ultrafine grain metal
A technology of equal-channel deformation and ultra-fine grain, which is applied in the direction of metal extrusion dies, etc., to achieve the effect of improving load bearing capacity and improving safety
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Embodiment 1
[0027] Embodiment 1: The deformation material is 99.999% high-purity aluminum, a square material of 12mm×12mm×80mm, which is annealed in a vacuum furnace at 400° C. and kept for 2 hours. The inner angle of the mold is 110°, and the outer angle of the mold is 0°. It is deformed at room temperature, and the pressing speed is about 0.15mm / s. Figure 4 is a transmission electron microscope photo after 12 passes of deformation.
Embodiment 2
[0028] Embodiment 2: The deformation material is oxygen-free copper (99.98%), square material of 12mm * 12mm * 80mm, annealed in a vacuum furnace at 600°C, kept for 1 hour, the inner angle of the mold is 90°, and the outer angle of the mold is 22°. Deformation at room temperature, the pressing speed is about 1.0mm / s. Fig. 5 is a transmission electron microscope photo after 12 passes of deformation.
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