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

现场观察模拟焊接凝固评价及凝固裂纹预防技术开发

• 批准号: 24760601
• 负责人: KADOI KOTA
• 金额: $ 2.58万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24760601/
• 关键词: 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

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.

本工作的目的是定量评价凝固过程中的裂纹敏感性，并研究防止裂纹萌生的方法。采用高速相机原位观察热裂敏感性评价试验，实现了激光焊接快速凝固过程中应变和温度的高精度定量测量。采用高倍率原位观察技术，可以直接观察熔池末端残液的分布形态。形貌变化趋势与凝固开裂敏感性变化趋势吻合较好。

项目成果

The Effect of Welding Conditions on Solidification Cracking Susceptibility of Type 310S Stainless Steel during Laser Welding Using In-situ Observation Technique

原位观察技术焊接条件对310S不锈钢激光焊接凝固裂纹敏感性的影响

• 作者: Tomo Ogura;Taichi Nishida;Hidehito Nishida;Mitsuo Fujimoto and Akio Hirose;Kota Kadoi
• 通讯作者: Kota Kadoi

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

焊接条件对SUS310S不锈钢激光焊接凝固裂纹敏感性的影响

• 发表时间: 2012
• 作者: Taichi Nishida;Tomo Ogura;Hidehito Nishida;Mitsuo Fujimoto;Makoto Takahashi and Akio Hirose;門井,藤永,山下,山本,篠崎
• 通讯作者: 門井,藤永,山下,山本,篠崎

The effect of welding conditions on solidification cracking susceptibility of type 310S stainless steel during laser welding using an in-situ observation technique

• DOI: 10.1007/s40194-013-0023-9
• 发表时间: 2013-03
• 期刊: Welding in the World
• 影响因子: 2.1
• 作者: K. Kadoi;A. Fujinaga;Motomichi Yamamoto;K. Shinozaki

Effect of Welding Conditions on Solidification Cracking Susceptibility of Type 310S Stainless Steel during Laser Welding

焊接条件对310S不锈钢激光焊接凝固裂纹敏感性的影响

• 发表时间: 2012
• 期刊: Proceeding of Visual-JW 2012
• 作者: Kota Kadoi;Akira Fujinaga;Motomichi Yamamoto;Kenji Shinozaki;Kota Kadoi
• 通讯作者: Kota Kadoi