研究了扭转挤压做为一种大塑性变形加工技术的可行性,并将其与普通的正挤压进行比较。在室温下对AA1050铝合金成功进行了扭转挤压和正挤压。采用商用有限元软件ABAQUS/Explicit模拟挤压过程。结果表明,在扭转挤压中,所需的载荷要比正挤压所需的小。有限元分析结果表明,在扭转挤压中,试样承受了较高的等效塑性应变,在挤压的最后阶段扭转挤压试样中的应变分布较之正挤压更为平滑,均匀。 The feasibility of torsional extrusion as a large plastic deformation processing technique was studied and compared with ordinary normal extrusion. AA1050 aluminum alloy was successfully twisted and extruded at room temperature. The commercial finite element software ABAQUS / Explicit was used to simulate the extrusion process. The results show that in torsional compression, the required load is less than that required for normal extrusion. The results of finite element analysis show that the specimen under torsional compression has a higher equivalent plastic strain, and the strain distribution in the torsional compression specimen in the final stage of extrusion is smoother and more uniform than the normal extrusion.