Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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A Study on Surface and Cross-section Properties Depending on the Process Parameters of Laser Depositions with Metal Powders (SUS316L and IN718)

공정 파라미터에 따른 금속분말(SUS316L, IN718) 레이저 적층 표면 및 단면 특성 분석

  • Hwang, JunHo (Institute of Advanced Convergence Technology, Kyungpook Nat. Univ.) ;
  • Shin, SeongSeon (Institute of Advanced Convergence Technology, Kyungpook Nat. Univ.) ;
  • Lee, JongHoon (Institute of Advanced Convergence Technology, Kyungpook Nat. Univ.) ;
  • Kim, SungWook (Materials Solution Research Group, Research Institute of Industrial & Technology) ;
  • Kim, HyunDeok (Institute of Advanced Convergence Technology, Kyungpook Nat. Univ.)
  • 황준호 (경북대학교 첨단정보통신융합산업기술원) ;
  • 신성선 (경북대학교 첨단정보통신융합산업기술원) ;
  • 이종훈 (경북대학교 첨단정보통신융합산업기술원) ;
  • 김성욱 (포항산업과학연구원 소재이용연구그룹) ;
  • 김현덕 (경북대학교 첨단정보통신융합산업기술원)
  • Received : 2017.05.29
  • Accepted : 2017.06.12
  • Published : 2017.06.30
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Abstract

The authors derived the criteria on the process parameters of laser depositions with metal powers(SUS316L & IN718) by evaluating the surface and cross-section properties of the deposition layers. The surface characteristics of the deposition layer are investigated through optical microscopy by controlling the process parameters of laser output, powder feeding rate and gas feeding rate. The cross-section characteristics were also analyzed after polishing and chemical etching process. As the gas feeding rate increased, the amount of powder loss increased and the difference in the dilution ratio and heat affected zone depending on laser outputs was observed. In addition, the powder feeding rate used in the experiment did not interfere with the energy absorption of the base material.

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References

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