Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Analysis of Thermal Cycles and Microstructure of Heat Affected Zone for a Low Alloy Carbon Steel Pipe under Multipass Weld

저합금 탄소강 배관재의 다층용접 열영향부의 미세조직 및 열이력 해석

  • Kim, Tae-Wan (Doosan Heavy Industries and Construction Corporation) ;
  • Ha, Jun-Uk (Doosan Heavy Industries and Construction Corporation) ;
  • Kim, Dong-Jin (Doosan Heavy Industries and Construction Corporation) ;
  • Kim, Jeong-Tae (Doosan Heavy Industries and Construction Corporation)
  • Published : 2002.03.01
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Abstract

The purpose of this study is to analyze thermal cycles and to investigate microstructures of heat affected zones for a low alloy carbon steel pipe under a multipass weld. The commercial finite element code SYSWELD is used to compute thermal cycles during multipass weld. The numerical results such as thermal cycles and size of heat affected zone are compared with those of the experiment and the two results show a good agreement. In addition, the microstructure and hardness are investigated from the weldment in detail. The weakest location is founded at intercritical region near the base metal.

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References

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