Study on Simulation and Mechanical Properties of Titanium/Copper lectron Beam Welding With Offset
ZHU Jun1,2, GUO Shun2, PENG Yong2, ZHOU Qi2, WANG Kehong2
1. School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China;
2. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Electron beam welding simulation and joint properties of TC4 titanium alloy and T2 copper were studied. By adopting the welding method of multiple offsets which means welding is carried out on copper first and then on titanium side, and the two welds are close but not connected, the tensile strength of Ti/Cu joints can be greatly improved. In order to explore the thermodynamic behavior of the joints, the finite element method (FEM) was used to analyze the temperature field, deformation and stress distribution, then the strengthening mechanism is discussed in combination with microstructure evolution and mechanical properties. Welding on titanium side can remelt the heterogeneous interface formed by welding on copper side, and improve its stress concentration. The tensile fracture shows that it is brittle cleavage fracture, the phase composition on the fracture surface changes from TiCu to Ti2Cu, and the brittleness decreases.
作者简介: 朱军：教授，研究领域为焊接、增材及仿生制造，发表学术论文20余篇。
引用本文:
朱军，郭顺，彭勇，周琦，王克鸿. 钛/铜电子束偏置焊接模拟及力学性能研究[J]. 航空制造技术, 2019, 62(18): 36-42.
ZHU Jun, GUO Shun, PENG Yong, ZHOU Qi, WANG Kehong. Study on Simulation and Mechanical Properties of Titanium/Copper lectron Beam Welding With Offset. Aeronautical Manufacturing Technology, 2019, 62(18): 36-42.
2019, 
