具有亚微米晶精细组织Mg-Zn合金薄片的制备（英文）

发布时间：2018-01-19 12:18

本文关键词： Mg Zn alloys Cold rolling Microstructure Texture　出处：《Science Bulletin》2015年05期 　论文类型：期刊论文

【摘要】：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.
[Abstract]:Metallic materials with ultrafine crystal structure have excellent mechanical properties, however. It is still a difficult problem to prepare bulk or sheet metal materials with ultrafine crystal structure by simple process. The anisotropy of magnesium alloys deformed at room temperature. It is even more difficult to prepare magnesium alloy lamellar materials with ultrafine crystal structure. At present, some precise electronic and electrical fields have been developed. Magnesium alloy sheet which is badly needed in the field of high-power magnesium anode battery and aerospace industry is mostly imported. In view of this situation, this paper provides a simple process solution. First, Mg-Zn alloy is selected. Hot rolling and annealing. Then, rapid rolling at room temperature. The fine magnesium alloy sheet with ultrafine grain structure was successfully prepared by this process. The material problems involved in the rapid cold rolling of mg / Zn alloy were also studied in this paper. It is considered that the starting of dislocation slip of polycrystalline plane in cold rolling process is the key to achieve good cold rolling property at room temperature.
【作者单位】： School
【基金】：supported by the National Natural Science Foundation of China (51171120)
【分类号】：TG146.22
【正文快照】： The ultra-fine-grained materials(UFMs)can achieve aconsiderable gain in mechanical responses,such as strengthand fatigue resistance[1].The feasible methods to produceUFMs are high-pressure torsion,equal channel angularextrusion,accumulative roll bonding,

【共引文献】