Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)

The Korean Institute of Building Construction (한국건축시공학회)
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A Study on the Mechanical Properties of Structural Steels by Welding at High Temperature

용접한 건축구조용 강재의 고온 시 기계적 특성에 관한 연구

  • 조범연 (한양대학교 대학원 건축환경공학과) ;
  • 지남용 (한양대학교 건축공학부)
  • Published : 2009.11.14
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Abstract

This research is to show the mechanical properties of structural steels by welding at high temperature. Welding parts are divided with weld metal and HAZ(Heat Affected Zone). HAZ is formed by interval from welding heat source and heating and cooling rates. Then, the change of both microstructure and mechanical properties occurs. Discontinuity of mechanical and chemical property at HAZ is the cause of safety decrease of structure. At this point, in this research, tensile tests at high temperature with test pieces of base metal and weld metal of SS400 and SM490 are accomplished. From the results, the mechanical properties of both SS400 and SM490 are standardized without welding or non-welding.

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