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观察了铸轧AZ31镁合金板材经不同异步比轧后试样的显微组织。结果表明,与同步轧制相比,异步轧制能显著降低AZ31镁合金的动态再结晶温度,细化晶粒,并且提高其低温轧制时的成形能力,无需中间退火处理即可制备出最终厚度为0.7 mm的镁合金薄板。同时,异步轧制能够明显减弱板材的基面织构,但其强度并不随异步比增加呈现明显的单调递减规律。
The microstructures of the as-cast AZ31 magnesium alloy sheets after different asynchronized ratio rolling were observed. The results show that, compared with synchronous rolling, asynchronous rolling can significantly reduce the dynamic recrystallization temperature of AZ31 magnesium alloy, grain refinement, and improve the formability at low temperature rolling without intermediate annealing can be prepared eventually Thickness of 0.7 mm magnesium alloy sheet. At the same time, asynchrony rolling can obviously weaken the basic texture of the plate, but its strength does not show obvious monotonous decreasing with the increasing of asynchronism.