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具有超细晶结构的金属材料具有优异的力学性能,然而,通过简单的工艺方法制备超细晶结构的块体或者片体金属材料仍然是个难题.镁合金室温变形的各向异性,使制备超细晶结构的镁合金片体材料更是难上加难.目前,某些精密的电子电器领域、大功率镁阳极电池领域以及航空航天领域亟需的镁合金片材大多依靠进口.针对这种现状,本文提供了一个简便的工艺解决方案.首先选取Mg-Zn合金,进行热轧制以及退火.然后,在室温环境下进行快速轧制,通过此工艺成功地制备了具有超细晶组织结构的完好镁合金薄片.本文还对Mg–Zn合金在快速冷轧过程中涉及的材料学问题进行了研究,认为在冷轧过程中多晶面位错滑移的启动是材料获得完好室温冷轧性的关键所在.
However, the preparation of ultrafine-grained bulk or sheet metal materials by a simple process is still a problem.Anotropic anisotropy of room temperature deformation of magnesium alloys leads to ultra-fine grained Fine grain structure of magnesium alloy sheet material is even harder.At present, some sophisticated electronic appliances, high-power magnesium anode cells and aerospace fields most need magnesium alloy sheet mostly rely on imports In this paper, a simple and convenient process solution is provided. First, the Mg-Zn alloy is selected and hot-rolled and annealed. Then, rapid rolling is carried out at room temperature. The ultrafine-grained microstructure Of the magnesium alloy sheet.This paper also studied the material problems involved in the rapid cold rolling process of Mg-Zn alloy, that the start of the dislocation slip of the polycrystalline plane in the cold rolling process is that the material is obtained at room temperature cold rolling Sex is the key.