In-situ measurement of stress and solid state phase transformation in low temperature phase transformation weld metal by synchrotron X-ray during welding process

同步辐射X射线原位测量焊接过程中低温相变焊缝金属的应力和固态相变

• 批准号: 24760606
• 负责人: ZHANG shuoyuan
• 金额: $ 2.66万
• 依托单位: Japan Atomic Energy Agency
• 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-24760606/
• 关键词: 溶接; 応力; 固相変態; その場測定; 放射光X線; 二次元検出器; 高エネルギー放射光X線

Reduction of welding residual stresses due to introduction of volume expansion via martensitic low temperature phase transformation has received more attention. In order to predict and control the mechanical performance and microstructure of welded structures, it is necessary to clarify the formation mechanism of stress and microstructure during the welding process. Therefore, we developed an in-situ measurement system using synchrotron X-rays, which allows simultaneous measurement of the phase transformation and stress during the welding process. We succeeded in measuring the time variation of the stress distribution and microstructure between the weld metal, heat affected zone, and base material, with the fastest time resolution (0.1 seconds) in the world. By using the in-situ measurement system to observe the entire specimen, we found that stress formation was largely responsible for the solid phase transformation and thermal contraction in the welding continuous cooling process.

通过马氏体低温相变引入体积膨胀来降低焊接残余应力已受到越来越多的关注。为了预测和控制焊接结构的力学性能和显微组织，有必要阐明焊接过程中应力和显微组织的形成机理。因此，我们开发了一种使用同步辐射X射线的原位测量系统，该系统可以同时测量焊接过程中的相变和应力。我们以世界上最快的时间分辨率（0.1秒）成功地测量了焊缝金属、热影响区和母材之间的应力分布和显微组织的时间变化。通过对整个试件的原位测量，发现焊接过程中的固相转变和热收缩主要是由应力的形成引起的。

项目成果

In-situ observation of microstress and solid state transformation in low temperature transformation weld metal by synchrotron radiation X-rays

同步辐射X射线原位观察低温转变焊缝金属的微应力和固态转变

• 发表时间: 2012
• 作者: S. Zhang;H. Terasaki;Y. Komizo
• 通讯作者: Y. Komizo

二次元検出器走査システムによるショットピーニング材表層近傍応力分布測定

使用二维探测器扫描系统测量喷丸材料表层附近的应力分布

• 作者: Okumura;M.;A. Ikado;Y. Saito;H. Aoki and Y. Kawakami;張朔源
• 通讯作者: 張朔源

二次元検出器走査システムを利用した応力測定法開発

利用二维探测器扫描系统的应力测量方法的开发

• 发表时间: 2012
• 作者: Chiaki Sato;Hidenao SHIOTE;Manabu OHE;張朔源,城鮎美,菖蒲敬久
• 通讯作者: 張朔源,城鮎美,菖蒲敬久

In-situ stress measurement in the heat affected zone during TIG welding process

TIG 焊接过程中热影响区的原位应力测量

• 发表时间: 2013
• 作者: Zhang Shuoyua;Takahisa Shobu;Ayumi Shiro;etc.
• 通讯作者: etc.

溶接時応力その場測定システムの開発

焊接过程中原位应力测量系统的开发

• 发表时间: 2013
• 作者: 張朔源,菖蒲敬久,城鮎美;など
• 通讯作者: など