Effects of deposition strategies on thermo-mechanical characteristics of inconel 718 deposited region on AISI 1045 substrate with a cantilever structure by LENS process

• Published in: Journal of mechanical science and technology 2022, 36(9), , pp.4695-4705
• Main Authors: Aliyev, Alissultan, Lee, Kwang-Kyu, Ahn, Dong-Gyu
• Format: Article
• Language: English
• Subjects: Cantilever members; Control; Deposition; Dynamical Systems; Engineering; Finite element method; Industrial and Production Engineering; Lenses; Mechanical Engineering; Mechanical properties; Nickel base alloys; Original Article; Residual stress; Substrates; Superalloys; Vibration; 기계공학
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-022-0830-2

The residual stress in the vicinity of the deposited region causes failure and excessive deformation of parts fabricated by a DED process. The deposition strategy remarkably affects characteristics of residual stress and deformation of the fabricated part for the case of depositing materials on a thin substrate with a cantilever structure. The goal of this paper is to investigate the effects of deposition strategies on thermo-mechanical characteristics of Inconel 718 deposited region on AISI 1045 substrate with a cantilever structure by a LENS process using finite element analyses. The influence of deposition strategies on temperature and residual stress distributions in the vicinity of the deposited region is examined to obtain appropriate deposition strategies. The effects of appropriate deposition strategies on the deflection and the distortion of the designed model are investigated. Finally, suitable deposition strategies are chosen from the viewpoints of characteristics of residual stress and deformation.