Researches on a composite extrusion approach based on FEM method and Experiments

摘要：

This paper deals with a finite element model (FEM) for the extrusion of AZ31 alloy and extrusion experiments at different temperatures. The simulation is utilized to predict the extrusion force and strain at different temperatures. ES (extrusion-shear) process and direct extrusion are investigated at 370, 400 and 420℃ to discuss the effects of different temperatures on the microstructures and mechanical properties with the extrusion ratio of 11.56. The simulation results obtained show that the extrusion force of ES process is much larger than direct extrusion because of the two corners. ES process could effectively refine the grains, especially the microstructure of the central region compared with direct extrusion. The bar extruded at 370 ℃ shows the best microstructures and mechanical properties.

关键词： ES process Finite element method Microstructures Mechanical properties

作者: Zhang Dingfei Zhang Junping Hu Hongjun

作者单位: National Engineering Research Center for Magnesium Alloys, Chongqing University, China College of Ma College of Materials Science and Engineering, Chongqing University, China National Engineering Research Center for Magnesium Alloys, Chongqing University, China College of Ma

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 305-309

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）