Study on Simulation and Mechanical Properties of Titanium/Copper lectron Beam Welding With Offset

ZHU Jun; GUO Shun; PENG Yong; ZHOU Qi; WANG Kehong

doi:10.16080/j.issn1671–833x.2019.18.036

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Study on Simulation and Mechanical Properties of Titanium/Copper lectron Beam Welding With Offset

更新时间：2025-10-30

- Study on Simulation and Mechanical Properties of Titanium/Copper lectron Beam Welding With Offset
- Aeronautical Manufacturing Technology Vol. 62, Issue 18, Pages: 36-42(2019)
- 作者机构：
  
  1. 南京工程学院材料科学与工程学院,南京,211167
  2. 南京理工大学材料科学与工程学院,南京,210094
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2019.18.036
  CLC：
- Published：2019
- 稿件说明：
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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.
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. DOI： 10.16080/j.issn1671–833x.2019.18.036.

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. DOI： 10.16080/j.issn1671–833x.2019.18.036.

摘要

本文研究了TC4 钛合金和T2 紫铜的电子束焊接模拟及接头力学性能规律。通过采用组合偏置的焊接方式，即铜侧偏置焊接完成后再在钛侧复合焊接，两道焊缝相近但不交接，该工艺方法能够大幅提升接头的拉伸强度。为了探索该过程的热力行为规律，采用有限元法对温度场云图、变形及应力分布进行了分析，并结合微观形态演变及力学性能对接头增强机制进行了阐述。复合钛侧焊接能够对原铜侧焊接的异种界面进行重熔改性，同时改善其应力集中状态。拉伸断口表明，接头为脆性解理断裂，断裂面的相组成由铜侧焊接的TiCu 转化为Ti

Cu，脆性减弱。

Abstract

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 f

racture

the phase composition on the fracture surface changes from TiCu to Ti

and the brittleness decreases.

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