동력기계공학회지 (Journal of Power System Engineering)

  • 제15권1호
  • /
  • Pages.45-50
  • /
  • 2011
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  • 2713-8429(pISSN)
  • /
  • 2713-8437(eISSN)
한국동력기계공학회 (The Korean Society for Power System Engineering)
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하이브리드 용접에 의한 세립강 용접부의 기계적 성질에 관한 연구

Mechanical Property of Ultra Fine Grained Steel Weld by Hybrid Welding

  • 동현우 (부경대학교 신소재공학부) ;
  • 안용식 (부경대학교 신소재공학부)
  • 투고 : 2010.09.15
  • 심사 : 2010.12.16
  • 발행 : 2011.02.28
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초록

The effect of Mn and Ti contents in filler wire on the microstructure and mechanical property of weld metal has been investigated after hybrid welding with ultra fine grained (UFG) steel. The microstructure and distribution of alloy compositions at the top region of weld zone were quite different with those at the bottom region after hybrid welding. The bottom region of weld zone contained higher Mn and Ti contents, and consequently the hardness of bottom region was higher than that of top region. With the increase of Mn and Ti contents in filler wire, the volume percent of acicular ferrite in weld metal decreased, and the weld zone showed higher hardness and better impact property.

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참고문헌

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