한국레이저가공학회지 (Laser Solutions)

한국레이저가공학회 (Korean Society of Laser Processing)
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AZ31 마그네슘합금과 아연도금강판 이종소재의 레이저 브레이징 특성

Characteristics of the laser brazing on AZ31 magnesium alloy and Zn coated steel dissimilar joint

  • Lee, Mok-Young (RIST) ;
  • Kim, Sook-Whan (RIST) ;
  • NASIRI, ALI M. (Department of Mechanical&Mechatronics Engineering, University of Waterloo) ;
  • ZHOU, NORMAN Y. (Department of Mechanical&Mechatronics Engineering, University of Waterloo)
  • 투고 : 2014.03.01
  • 심사 : 2014.03.28
  • 발행 : 2014.03.31
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초록

The dissimilar welding between magnesium alloy and steel sheet was required in automobile industry to increase the strength of the dissimilar joints. Laser brazing is one of the good joining processes for Mg- steel dissimilar joint. In this study, AZ31 magnesium alloy and Zn coated steel dissimilar joint was brazed using diode direct laser with Mg600 filler wire and Superior #21 flux. The wetting of Mg filler wire on Zn coating was very good because of the formation of eutectic phase with low melting temperature. The strength of the brazed joint between AZ31 magnesium alloy and Zn coated steel was 131.3N/mm. The fracture occurred at brazement.

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