Finite Element modeling of Residual Stress of Ti/TiAl multilayer composites prepared by EBPVD technology

摘要：

A numerical model on residual stress field in the Ti/TiAl multilayer composites prepared by Electron Beam Physical Vapor Deposition (EB-PVD) technology was investigated. A series of finite element analysis (FEA) programs were developed by APDL language of ANSYS to analyze the temperature field and thermal stress field of the Ti/TiAl multilayer composites. Transient analysis of temperature field and corresponding thermal stress field of the Ti/TiAl multilayer composites during the whole deposition process was carried and some meaningful results were obtained. It shows that the temperature changes violently with different deposition materials during the deposition process, while the trend of temperature distribution remains the same under different boundary condition. With increasing of thickness, the thermal stress takes on the increasing tendency. Also the calculation results of thermal stress field vary extraordinarily and stress concentration phenomena appear at the interface of different materials near the free edge.

关键词： Ti/TiAl multilayer composites electron beam physical vapor deposition (EBPVD) finite element analysis (FEA) temperature field thermal stress field

作者: Liping Shi Yesheng Zhong Jia Yu Xiaodong HE

作者单位: Center for Composite Materials, Harbin Institute of Technology,Harbin 150001, P.R, China Harbin Engineering University, Harbin 150001, P.R, 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）