レーザ溶接の建築構造用高強度鋼H-SA700への適用に関する基礎的検討

• 崎野 良比呂

  近畿大学工学部建築学科

• 松本 直幸

  株式会社IHI 技術開発本部

• 猪瀬 幸太郎

  株式会社IHI 技術開発本部

• 信木 関

  近畿大学工学部機械工学科

• 堤 成一郎

  大阪大学 接合科学研究所

書誌事項

タイトル別名

• Application of laser welding on high-strength steel for buildings (H-SA700)

抄録

Arc welding is commonly applied to high-strength steel for buildings (H-SA700). However, the heat-affected zones of H-SA700 often become soft and the yield stress decreases compared to that of the base metal owing to the large heat input of arc welding. In this study, laser welding was applied to H-SA700. The residual stress, hardness, mechanical property and fracture toughness of H-SA700 after laser welding were examined and the results were compared with those of arc welding. As a result, the softened area of H-SA700 welded using laser welding was considerably smaller than that obtained using arc welding, and the yield stress was the same as that of the base metal. Fracture pass deviation (FPD) was observed in the Charpy impact test.

収録刊行物

• 鋼構造論文集

  鋼構造論文集 25 (99), 99_23-99_30, 2018-09-28

  社団法人 日本鋼構造協会

キーワード

• レーザ溶接
• 高張力鋼
• 熱影響部
• 軟化
• FPD

詳細情報

• CRID: 1390001288156398464
• NII論文ID: 130007688553
• DOI: 10.11273/jssc.25.99_23
• ISSN: 18840329
• ISSN: 18809928
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可