Process Modeling for Electron Beam Welding of Ti-6Al-4V

摘要：

A finite element model of electron beam welding of 14.5 mm thick Ti-6Al-4V titanium alloy plate is developed using a sequentially coupled thermal-mechanical analysis through employing ANSYS software code. For the purpose of model validation, melt run trial and measurements of fusion zone dimensions and residual stresses have been carried out. The fusion-boundary profile is reproduced accurately through using a conical volume heat source model and the predicted residual stresses are in reasonable agreement with the measured results determined by hole-drilling method. Through the analysis of predicted residual stresses through the thickness, it is found that the normal residual stress in the interior of plate is by no means negligible and the maximum value of three dimensional residual tensile stresses arises at the weld zone of 10.15 mm thick.

关键词： electron beam welding finite element analysis residual stresses Ti-6Al-4V

作者: Hu Meijuan Liu Jinhe

作者单位: School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, 710072, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Physical and Numerical Simulation of Materials Processing(第五届材料与热加工物理模拟及数值模拟国际会议)

会议地点: 郑州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）