Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Lap Welding of Magnesium Alloy using Nd:YAG Laser

Nd:YAG 레이저를 이용한 마그네슘 합금의 겹치기 용접

  • Kim, J.D. (Division of Marine Engineering, Korea Maritime Univ.) ;
  • Lee, J.H. (Graduate School, Korea Maritime Univ.) ;
  • Suh, J. (Korea Institute of Machinery & Materials, Laser Application Team)
  • 김종도 (한국해양대학교 기관공학부) ;
  • 이정한 (한국해양대학교 대학원) ;
  • 서정 (한국기계연구원 광응용생산기계연구실)
  • Received : 2011.07.19
  • Accepted : 2011.09.23
  • Published : 2011.09.30
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Abstract

In automotive industry, because of the consideration of fuel economy, lightweight alloys have been adopted and are expected to be extensively used in the future. Magnesium alloys are among the promising materials, due to their lightweight and good mechanical properties. This study is related to the laser weldability of AZ31B magnesium alloy, an all-purpose wrought alloy with good strength and ductility. A 4kW Nd:YAG laser was used to join AZ31B sheet, and the effects of welding parameter on the quality of lap-welded joints were investigated. As a result of this study, the optimal condition was obtained, and the effect of gap distance was also revealed on the porosity control.

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