Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)

The Korean Welding and Joining Society (대한용접접합학회)
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Microstructure and mechanical properties of Nd:YAG Laser welded AZ31-H24 Magnesium alloy using AZ61 filler metal

AZ61 filler wire를 사용하여 Nd:YAG Laser 용접한 AZ31-H24합금의 미세조직과 기계적 특성

  • 류충선 (부경대학교 소재프로세스공학과) ;
  • 이목영 (포항산업과학연구원(RIST) 용접센터) ;
  • 방국수 (부경대학교 소재프로세스공학과) ;
  • 장웅성 (포항산업과학연구원(RIST) 용접센터)
  • Published : 2007.11.15
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Abstract

Nd:YAG laser welding of AZ31B-H24 magnesium alloy was carried out using AZ61 filler wire(Mg-6wt%Al-1wt%Zn). Microstructure and mechanical properties of welded joint were examined by optical microscopy, scanning electronic microscopy(SEM), energy dispersive spectroscopy(EDS), electron probe micro analyzer(EPMA) and victors hardness, tensile test at the room and elevated temperature. Test results indicate that the specimens welded with AZ61 filler wire have better tensile strength, elongation and victors hardness at room temperature than those of welded without filler wire. However tensile strength are similar but elongation are quite different at elevated temperature.

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