Journal of Welding and Joining

  • 제25권3호
  • /
  • Pages.51-56
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  • 2007
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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Al-Fe 레이저 오버레이층 경계면에서의 금속간화합물 거동

Intermetallic Compounds Behavior at Laser Overlay Interface of Aluminum and Fe-based Powder

  • 강남현 (부산대학교 재료공학부) ;
  • 유연곤 (신한다이아몬드 R&BD 신소재연구팀) ;
  • 이창우 (한국생산기술연구원 정밀접합팀) ;
  • 김정한 (한국생산기술연구원 정밀접합팀)
  • 발행 : 2007.06.30
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초록

A $CO_2$ laser overlay was conducted by using a Fe-based powder on the AC2B aluminum substrate. Cracks and intermetallic compounds (IMC) were observed inconsistently along the interface between the overlay and post-molten layer. A scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) detected some Fe-rich IMC ($Fe_3Al$, FeAl) as well as the brittle Al-rich IMC ($Fe_2Al_5,\;FeAl_3$). Micro vickers hardness proved the formation of Al-rich IMC ($FeAl_3$) along the interface by showing HV0.1 $800{\sim}900$. Furthermore, nano indentation was successfully applied to investigate the behavior of IMC more precisely than the micro vickers hardness.

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참고문헌

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