ＨＴ６０鋼の軟質溶接継手における静的強度の検証

• 松本 俊美

  (株)日立製作所日立研究所

• 佐藤 宏

  (株)日立製作所日立研究所

• 桐原 誠信

  (株)日立製作所日立研究所

• 幡谷 文男

  (株)日立製作所日立研究所

書誌事項

タイトル別名

• Investigations on static strength of undermatching welded joint of HT 60 steel plates.

抄録

The use of electrodes with a nominal strength lower than that of base metal has been considered to be effective in preventing weld cracks, although the use of electrodes with a nominal strength higher than that of base metal is in common. K. Satoh and M. Toyoda have analyzed the tensile behavior of undermatching welded joint and have demonstrated the appropriateness of this joint to heavy plates of HT 80 steel.<BR>However, heavy plates of HT 60 steel are more common in heavy electric industrial structures, so that the strength of undermatching welded joint of HT 60 steel has been investigated in this paper. The results of investigations are summarized as follows:<BR>(1) Undermatching welded joint of wide and heavy plates of HT 60 steel, where the weld metal has appropriate tensile strength, fractures in the base plate and exhibits significant ductility under tensile load even if the weld reinforcement is machined out, according to the increase in tensile strength of the joint caused by the hardening area in heat affected zone.<BR>(2) Cylindrical pressure vessel has bursted at base plate region about 10 nun apart from the toe of the welded joint in the axial direction and it has been observed that the stress-strain curve for the weld metal of the joint locates in higher stress-strain region than that for the weld metal itself and it seems to approach to that for the base metal as the strain becomes larger.

収録刊行物

• 溶接学会論文集

  溶接学会論文集 4 (2), 429-435, 1986

  一般社団法人 溶接学会

キーワード

• Undermatching
• HT 60
• Strength
• Fracture
• Elongation
• Hardness

詳細情報

• CRID: 1390001204722002304
• NII論文ID: 130003764780
• DOI: 10.2207/qjjws.4.429
• ISSN: 24348252
• ISSN: 02884771
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可