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9% 니켈강 후판 용접부의 강도 및 잔류응력

Welding Residual Stress and Strength of Thick 9% Nickel Steel Plate

  • 김영균 (한국가스공사 연구개발원) ;
  • 김영완 (전남대학교 기계설계공학부) ;
  • 김재훈 (충남대학교 기계설계공학과)
  • Kim, Young-Kyun (R&D Division, Korea Gas Corporation) ;
  • Kim, Young-Wann (Department of Mechanical Design Engineering, Chonnam National University) ;
  • Kim, Jae-Hoon (Department of Mechanical Design Engineering, Chungnam National University)
  • 투고 : 2014.03.04
  • 심사 : 2014.06.24
  • 발행 : 2014.08.31

초록

In this paper, the transient thermal and residual stress analysis of the welding of 9% Ni steel plates using the FEA software ABAQUS are presented. The 9% Ni steel plates are welded manually with welding consumables of 70% Ni based Inconel type super-alloys (YAWATA WELD B (M)), producing a multi-pass/multi-layer butt weld. For these materials, temperature dependant mechanical and thermal material properties are used in the analysis. The back gouging is considered in welding process simulation. The FE thermal results are validated by comparing the real fusion profile and heat affected zone (HAZ). In addition, the continuous indentation test was conducted to measure the strength of base metal, HAZ and weld metal.

키워드

참고문헌

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피인용 문헌

  1. A study on the Thermal Deformation of Line Heated TMCP and Normalizing Steel vol.20, pp.5, 2016, https://doi.org/10.9726/kspse.2016.20.5.046
  2. A Comparison of Hot Cracking in GTAW and FCAW by Applying Alloy 625 Filler Materials of 9% Ni Steel vol.37, pp.4, 2014, https://doi.org/10.5781/jwj.2019.37.4.10
  3. Analysis of residual stress in welding parts of cryogenic materials for LNG storage tank vol.34, pp.7, 2014, https://doi.org/10.1142/s0217984920400308