Rheo-diecasting with high solid fraction is a new die casting process developed in recent years. In order to promote the application of this process in magnesium alloys, taking the test bar castings as the research object in the experiment, the commercial simulation software, FLOW-3D, was used to simulate the effects of the semisolid rheo-diecasting process parameters on the test bar air entrainment and oxide inclusion of Mg-6Al-1Ca-0.5Sb magnesium alloy with solid fraction range from 0.42 to 0.64, and the optimal process parameters were finally determined through orthogonal simulation experiments. The magnesium alloy slurry was fabricated by the swirled enthalpy equilibration device (SEED), and the die casting test bar was verified using the optimal process parameters that slurry temperature of 580 °C, injection speed of 1.75 m/s and mold temperature of 225 °C. The experimental results show that the die castings have complete mold filling, smooth surface and no surface defects. The microstructure of the test bar was composed of rounded grains with an average grain size of 34.42μm and an average shapes factor of 0.79. The tensile strength of the test bar after T6 treatment was 250 MPa and elongation was 18.9%, which were increased by 33% and 84% compared with that of semisolid rheo-diecasting test bar, respectively.

高固相流变压铸是近年来发展起来的一种新型压铸工艺。为推广该工艺在镁合金中的应用，实验以试棒铸件为研究对象，采用商用模拟软件FLOW-3D模拟半固态流变压铸工艺参数对镁合金性能的影响。对固相分数为0.42~0.64的Mg-6Al-1Ca-0.5Sb镁合金的试条夹气和氧化物夹杂进行了试验，通过正交模拟实验最终确定了最佳工艺参数。采用旋流式焓平衡装置（SEED）制备镁合金浆料，采用浆料温度580℃、注射速度1.0的最佳工艺参数对压铸试棒进行验证。75 m/s，模具温度为 225 °C。实验结果表明，压铸件充型完整，表面光洁，无表面缺陷。试棒的微观结构由圆形晶粒组成，平均晶粒尺寸为34.42μm，平均形状因子为0.79。T6处理后试棒的抗拉强度为250 MPa，延伸率为18.9%，分别比半固态流变压铸试棒提高了33%和84%。