Low-cost magnesium alloy with high room-temperature plastic deformation and preparation process thereof

2015 
The invention discloses a low-cost magnesium alloy with the high room-temperature plastic deformation and a preparation process thereof, and belongs to the technical field of metal materials. The magnesium alloy comprises, by weight, 0.1%-0.9% of zinc, 0.1%-0.4% of calcium, 0-0.05% of manganese and the balance magnesium. The magnesium alloy does not contain rare earth elements or the Zr element and is low in alloy cost, an ingot of the magnesium alloy has good thermoplastic machining performance, large-rolling-reduction rolling with the rolling reduction being 80% at most in one pass can be achieved during hot rolling, and cracks in the surface are avoided. The ingot is subjected to thermoplastic machining and then annealing, the obtained magnesium alloy has a weak non-basal texture, the maximum density value of the magnesium alloy is not greater than 5, and the room-temperature elongation of the magnesium alloy is high and can reach 25%-40%.
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