Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Influence of Heat Input and Weld Bead Composition on Welding Property in the Laser Welding between Sintered Segment and Mild Steel Shank

소결체와 저탄소강의 레이저용접 특성에 미치는 입열량 및 용접부 성분변화의 영향

  • Jung Woo-Gwang (School of Advanced Materials Engineering, Kookmin University) ;
  • Cho Nam-Joon (School of Advanced Materials Engineering, Kookmin University) ;
  • Kim Sung-Wook (Division of Materials Science and Engineering, College of Engineering, Hanyang University) ;
  • Lee Chang-Hee (Division of Materials Science and Engineering, College of Engineering, Hanyang University) ;
  • Kim Sung-Dea (School of Advanced Materials Engineering, Kookmin University) ;
  • Lee Joo-Hyung (School of Advanced Materials Engineering, Kookmin University) ;
  • Park Hwa-Soo (School of Advanced Materials Engineering, Kookmin University)
  • 정우광 (국민대학교 공과대학 신소재공학부) ;
  • 조남준 (국민대학교 공과대학 신소재공학부) ;
  • 김성욱 (한양대학교 공과대학 신소재공학부) ;
  • 이창희 (한양대학교 공과대학 신소재공학부) ;
  • 김승대 (국민대학교 공과대학 신소재공학부) ;
  • 이주형 (국민대학교 공과대학 신소재공학부) ;
  • 박화수 (국민대학교 공과대학 신소재공학부)
  • Published : 2004.06.01
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Abstract

A laser welding was applied between sintered tip of Fe-Co-W and low carbon steel shank for the diamond saw blade. The welding characteristics and formation of defects were investigated carefully for the weld fusion zone in different welding condition. Dendrite arm spacing in weld bead decreased with decrease of heat input. Co and W increased and Fe decreased in the weld fusion zone with increase of the heat input. The corresponding change of composition was observed with the change of beam position. The maximum and total length of crack decreased with increase of the heat input. The crack in weld bead was propagated along the dendrite boundary and was caused mainly by the segregation of constituent during the solidification.

Keywords

References

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