Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)

The Korean Welding and Joining Society (대한용접접합학회)
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A Study on the Impact Toughness and Microstructure change for Low carbon TMCP Structural Steel Alloy with Welding Heat Impact

용접 입열량에 따른 저탄소형 TMCP 구조용 강재의 용접부 충격인성 및 미세조직 변화에 관한 연구

  • 권순두 (현대중공업(주) 기능교육원) ;
  • 이광학 (울산대학교 첨단소재공학부) ;
  • 박동환 (현대중공업(주) 산업기술연구)
  • Published : 2004.11.01
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Abstract

This study was investigated on the impact toughness and microstructure of welded metal and heat affected zone for B grade steel. With welding procedures, welding heat inputs applied were 30, 79 and 264 kJ/cm, Prior austenite grain size in coarse zone has increased with increasing welding heat input for B grade steel. The toughness of fusion line zone of Bgrade steel has decreased with increasing welding heat input while the toughness fusion line +3 and +5 mm zone increased contrarily.

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