Evaluation of solidification during welding by in-situ observation and simulation and development of prevention technique for solidification cracking

• Project/Area Number: 24760601
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Material processing/treatments
• Research Institution: Hiroshima University
• Principal Investigator: KADOI KOTA 広島大学, 工学(系)研究科(研究院), 助教 (40454029)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 溶接接合 / 凝固工学 / その場観察 / 高温割れ / 凝固割れ / 凝固 / 溶接・接合

Research Abstract

The aim of this work is for quantitative evaluation of solidification cracking susceptibility during and for investigation of prevention the crack initiation. Evaluation test for hot cracking susceptibility by In-situ observation using high speed camera enabled quantitative measurement the strain and temperature with high accuracy under rapid solidification during laser welding. It was possible to observe distribution morphology of residual liquid at the end of molten pool directly by high magnification in-situ observation technique. In addition, the tendency of the morphology had good agreement with the tendency of the solidification cracking susceptibility.

Research Products

• [Journal Article] The effect of welding conditions on solidification cracking susceptibility of type 310S stainless steel during laser welding using an in-situ observation technique (2013)
  • Author(s): K. Kadoi, A. Fujinaga, M. Yamamoto, K. Shinozaki
  • Journal Title: Welding in the World Volume: 57巻 Pages: 383-390
  • Peer Reviewed
• [Journal Article] The effect of welding conditions on solidification cracking susceptibility of type 310S stainless steel during laser welding using an in-situ observation technique (2013)
  • Author(s): Kota Kadoi, Akira Fujinaga, Motomichi Yamamoto, Kenji Shinozaki
  • Journal Title: Welding in the World Volume: 57 Pages: 383-390
  • DOI: 10.1007/s40194-013-0023-9
  • Peer Reviewed
• [Journal Article] Effect of Welding Conditions on Solidification Cracking Susceptibility of Type 310S Stainless Steel during Laser Welding (2012)
  • Author(s): Kota Kadoi
  • Journal Title: Proceeding of Visual-JW 2012 Volume: 1 Pages: 146-147
• [Presentation] Effect of welding conditions on solidification cracking susceptibility of type 310S stainless steel during laser welding (2012)
  • Author(s): K. Kadoi, A. Fujinaga, M. Yamamoto, K. Shinozaki
  • Organizer: Visual-JW2012
  • Year and Date: 2012-11-29
• [Presentation] SUS310Sステンレス鋼のレーザ溶接における凝固割れ感受性に及ぼす溶接条件の影響 (2012)
  • Author(s): 門井,藤永,山下,山本,篠崎
  • Organizer: 溶接学会平成24年度秋季全国大会
  • Year and Date: 2012-09-28
• [Presentation] The effect of welding conditions on solidification cracking susceptibility of type 310S stainless steel during laser welding using an in-situ observation technique (2012)
  • Author(s): K. Kadoi, A. Fujinaga, M. Yamamoto, K. Shinozaki
  • Organizer: 65^<th> IIW Annual Assembly
  • Year and Date: 2012-07-10
• [Presentation] The Effect of Welding Conditions on Solidification Cracking Susceptibility of Type 310S Stainless Steel during Laser Welding Using In-situ Observation Technique
  • Author(s): Kota Kadoi
  • Organizer: 65th IIW (international Institute of Welding) Annual Assembly
  • Place of Presentation: デンバー，アメリカ
• [Presentation] SUS310Sステンレス鋼のレーザ溶接における凝固割れ感受性に及ぼす溶接条件の影響
  • Author(s): 門井浩太
  • Organizer: 溶接学会 平成24年度 秋季全国大会
  • Place of Presentation: 奈良市