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Affiliation of Author(s):材料科学与技术学院

Journal:Mater. Res. Express

Abstract:Due to the high efficiency, precision and excellent welding joint properties, electron beam welding(EBW) has become a preferred welding method for a variety of materials, widely used in the aerospace industry. In this study, the EBW orthogonal experiment of 3 mm thick GH4169 superalloy panel was carried out to explore the effects of accelerated voltage, beam current and welding speed on the performance of butt joints. In addition, a three-dimensional finite element model was established to describe the residual stress and deformation generated during the EBW process. In the model, a combined double ellipsoid and conical heat source was adopted, and the influence of the clamping and gravity on the simulation calculation was fully considered. The actual welding conditions were simulated and reliable results were obtained. As a result, the optimized parameters were got for 3 mm GH4169 and they are the accelerated voltage of 60 kV, beam current of 20 mA and welding speed of 20 mm s-1. Base on the parameters, the simulation results provide the temperature and residual stress distribution, as well as the deformation trend of the EBW process, which was verified by the experiment. Furthermore, the finite element model can provide reference for the process optimization of the complex components EBW and multi-process welding in the future work. © 2018 IOP Publishing Ltd.

Translation or Not:no

Date of Publication:2019-02-01

Co-author:佘律波,Wang Shaogang,马纪龙,欧文敏

Correspondence Author:Wang Shaogang,Wei Yanhong