ANALYSIS ON THE TEMPERATURE FIELD DURING Al2O3sf/LY12 COMPOSITES LIQUID-SOLID EXTRUSION PROCESS USING 3D FEM SIMULATION
Al2O3sf/LY12复合材料液固挤压成形中温度场演变的三维有限元分析

The 3D finite element model which characterized the heat conduction in the liquidsolid extrusion process of Al2O3sf/LY12 composites was established, and the 3D temperature field was obtained. The results indicated that during the pressure-keeping stage, the temperature fields at the surface and inner part of the billet distributed evenly. In the extrusion process, however, they fluctuated tempestuously, which led to partial overheating on billet surface and resulted in superficial crack. The simulated results were verified by the experimental ones. The work laid a foundation for the rational choice of process parameter to enhance product quality.