Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Study on the Mechanical Properties of Laser Welded AZ31 Magnesium Alloy

AZ31 마그네슘 합금 레이저 용접부의 기계적 성질에 관한 연구

  • Lee, M.Y. (Technical Institute, Sungwoo Hitech Co., Ltd) ;
  • Jeong, B.H. (Technical Institute, Sungwoo Hitech Co., Ltd) ;
  • Jeong, S.M. (Technical Institute, Sungwoo Hitech Co., Ltd) ;
  • Park, H.J. (Technical Institute, Sungwoo Hitech Co., Ltd)
  • 이문용 ((주) 성우하이텍 기술연구소) ;
  • 정병훈 ((주) 성우하이텍 기술연구소) ;
  • 정성문 ((주) 성우하이텍 기술연구소) ;
  • 박현준 ((주) 성우하이텍 기술연구소)
  • Published : 2006.05.01
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Abstract

This study aimed to investigate the change of mechanical properties with the rolling direction and shielding condition during laser welding of AZ31 magnesium alloy. AZ31 magnesium alloy sheets of 1mm thickness were welded using a continuous wave Nd:YAG laser with and without Ar shielding gas. The effect of Ar shielding gas and rolling direction on the mechanical properties were investigated using Vickers hardness, transverse-weld tensile. Porosity in the weld metals was investigated using an optical microscope. The experimental results showed that mechanical properties of AZ31 magnesium alloy laser welds were upgraded compared to those of base metal. Mechanical properties of AZ31 magnesium alloy laser welds were not substantially changed when Ar shielding gas was supplied.

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