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Online ISSN : 1884-0329
Print ISSN : 1880-9928
ISSN-L : 1880-9928
Newly Proposed HAZ Toughness Evaluation Method of Structural Steel for Building and The Result of Evaluation by Its Application
Hitoshi FURUYARyuji UEMORIShuji AIHARAMasahiro NAGATATakumi IKEBEToshifumi KOJIMAYoshiaki MURAKAMIHaruhito OKAMOTOJunichi KUDOTakahiro KUBOYuichi WATANABERyuichi ANDOToyoaki SHIWAKUHiroyuki HOMMAAkiyoshi MUKAIKoji MORITA
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2000 Volume 7 Issue 27 Pages 23-37


This paper is intended as an investigation of the useful method of HAZ toughness evaluation and describes the results of toughness estimation for various structural steels for buildings, including JIS G 3136 SN steel. According to the experiment of fracture in the vicinity of beam-to-column connection, it often initiates near the root welding pass or finishing welding pass. Therefore, the new HAZ toughness evaluation method was proposed using one-bead welding to duplicate the coarse grain region, by taking notice of the grain-coarsened region in HAZ of the last welding pass. The HAZ toughness of SN steels and various high quality steels was estimated using one-bead method, and each exhibited the absorbed energy of more than 27J. Finally, it was examined to formulate the relationship between the HAZ toughness and the chemical compositions.

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© Japanese Society of Steel Construction
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