中文摘要：

实验研究了半固态铸轧成形技术制备的AZ91D镁合金板带的再加工组织性能及特点。半固态铸轧实验是在自制的试验机上进行的，得到半固态铸轧AZ91D镁合金板带之后，分别进行冷轧、热轧和冲杯实验，加工后取样观察显微组织。实验结集表明，半固态铸轧的AZ91D镁合金板带材具有较好的加工性，最大冷变形可达到28％。热变形可达到47％。观察组织可见，横断面、纵断面固相颗粒在轧制作用下都有所变形，纵断面的变形更为严重，说明组织沿轧制方向塑性变形较大。

英文摘要：

The paper investigated the microstructure and properties of AZ91D Magnesium alloys strip processed after semi-solid state by casting-rolling. The experiment of the casting and rolling of semi solid Magnesium alloy was carried out on the equipment made by ourselves in our laboratory. The semi-solid state AZ91D Magnesium alloys by casting-rolling was processed by cool-roll ing, hot-rolling and pressing respectively, and then it was made a sample for abserving the microstucture. It was found that the semi-solid state AZ91D Magnesium alloys by casting-rolling had a good deformabitly. The maximal cool deform-rate reached to 28% and the maximal hot deform rate reached to 47%. The microstructure was observed both in the transect and in the vertical section be deformed. The deformation of the microstructure in the vertical section （along the rolling direction） was more heavily.