Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Study on the mechanical properties of 5052 aluminum alloy laser welds

5052 알루미늄 합금 레이저 용접부의 기계적 성질에 관한 연구

  • 윤종원 (동의대학교 공과대학 재료금속공학과) ;
  • 이윤상 (동의대학교 대학원 신소재공학과) ;
  • 이문용 (㈜성우하이텍 기술연구소) ;
  • 정병훈 (㈜성우하이텍 기술연구소)
  • Published : 2003.04.01
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Abstract

5052 aluminum alloy sheets of 2mm thickness were butt welded using a continuous wave Nd:YAG laser with and without Ar shielding gas. Vickers hardness, transverse-weld tensile and bulge tests were carried out to investigate the effect of Ar shielding gas on the mechanical properties and formability of laser welds. Porosity in the weld metals was investigated using an optical microscope. Mechanical properties and formability of 5052 aluminum alloy laser welds were degraded compared to those of base metal. However, those properties were improved due to the reduced size and number of porosity when Ar shielding gas was used.

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