Effects of scanning strategies on residual stress and deformation by high-power direct energy deposition: Island size and laser jump strategy between islands

2022 ◽  
Vol 75 ◽  
pp. 23-40
Author(s):  
Jingsheng Wang ◽  
Jiajia Zhang ◽  
Guangtao Liu ◽  
Lvjie Liang ◽  
Guang Yang ◽  
...  
Keyword(s):  
Residual Stress ◽  
High Power ◽  
Energy Deposition ◽  
Island Size ◽  
Direct Energy Deposition ◽  
Direct Energy ◽  
Stress And Deformation ◽  
Scanning Strategies ◽  
Residual Stress And Deformation

scholarly journals A Residual Stress Prediction of Machining IN718 Produced by Direct Energy Deposition

Procedia CIRP ◽  
2021 ◽  
Vol 102 ◽  
pp. 13-18
Author(s):  
Francesco Careri ◽  
Stano Imbrogno ◽  
Domenico Umbrello ◽  
José C. Outeiro ◽  
António C. Batista
Keyword(s):  
Residual Stress ◽  
Energy Deposition ◽  
Direct Energy Deposition ◽  
Direct Energy ◽  
Stress Prediction

Multi-physics modeling of direct energy deposition process of thin-walled structures: defect analysis

2021 ◽  
Vol 67 (4) ◽  
pp. 1229-1242
Author(s):  
Shuhao Wang ◽  
Lida Zhu ◽  
Yichao Dun ◽  
Zhichao Yang ◽  
Jerry Ying Hsi Fuh ◽  
...  
Keyword(s):  
Energy Deposition ◽  
Deposition Process ◽  
Defect Analysis ◽  
Direct Energy Deposition ◽  
Thin Walled Structures ◽  
Direct Energy ◽  
Thin Walled ◽  
Physics Modeling

Numerical Simulation for Residual Stress and Deformation of Surface Welding on Membrane Water-Wall

2014 ◽  
Vol 490-491 ◽  
pp. 594-599
Author(s):  
Fan Ling Meng ◽  
Ai Guo Liu
Keyword(s):  
Residual Stress ◽  
Great Influence ◽  
Residual Deformation ◽  
Welding Residual Stress ◽  
Finite Element Software ◽  
Welding Sequence ◽  
Surface Welding ◽  
Stress And Deformation ◽  
Welding Sequences ◽  
Residual Stress And Deformation

Automatic MIG was adopted to weld Inconel 625 alloy on 20 G Membrane Waterwall, which can improve the capacities of high temperature corrosion resistance and wear resistance. To study the influence of Membrane Waterwall surface welding sequences on residual stress and residual deformation, this paper utilized finite element software ABAQUS and segmented moving heat source model to simulate the sequence welding, balanced welding from the middle to sides, balanced welding from sides to the middle, balanced skip welding from middle to sides and balanced skip welding from sides to the middle and studied their residual stresses and deformations. The simulation results indicated that there was a great influence of welding sequences on the residual stress and deformation. The optimal welding sequence was balanced skip welding from middle to sides and balanced skip welding from sides to the middle, which could change the stress distribution, decrease the welding residual stress by 17%, realize the even deformation of the whole welding section and decrease the bending deformation by 50%.

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