Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Preliminary Study on the Lamination Characteristics of Inconel 718 Superalloy on S45C Structural Steel using LENS Process

LENS 공정을 이용한 Inconel 718 초합금의 S45C 구조용강 위 적층 특성 고찰에 관한 기초 연구

  • Kim, Hyun-Sik (Department of Mechanical Engineering, Chosun UNIV.) ;
  • Lee, Hyub (Korea Additive Manufacturing Innovation Center, Korea Institute of Industrial Technology) ;
  • Ahn, Dong-Gyu (Department of Mechanical Engineering, Chosun UNIV.)
  • 김현식 (조선대학교 기계공학과) ;
  • 이협 (한국생산기술연구원 3D 제조 혁신 센터) ;
  • 안동규 (조선대학교 기계공학과)
  • Received : 2020.10.12
  • Accepted : 2020.11.16
  • Published : 2021.01.31
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Abstract

A laser-engineered net shaping (LENS) process is a representative directed energy deposition process. Deposition characteristics of the LENS process are greatly dependent on the process parameters. The present paper preliminarily investigates deposition characteristics of Inconel 718 superalloy on S45C structural steel using a LENS process. The influence of process parameters, including the laser power and powder feed rate, on the characteristics of the bead formation and the dilution in the vicinity of the deposited region is examined through repeated experiments. A processing map and feasible deposition conditions are estimated from viewpoints of the aspect ratio, defect formation, and the dilution rate of the deposited bead. Finally, an appropriate deposition condition considering side angle, deposition ratio, and buy-to-fly (BTF) is predicted.

Keywords

References

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