Two-Dimensional Time-Resolved X-ray Diffraction Study of Directional Solidification in Steels
Two-Dimensional Time-Resolved X-ray Diffraction Study of Directional Solidification in Steels
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DOI：
10.2320/matertrans.47.2292
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发表时间：
2006-09
影响因子：
1.2
通讯作者：
M. Yonemura;T. Osuki;H. Terasaki;Y. Komizo;Masugu Sato;H. Toyokawa
中科院分区：
文献类型：
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作者：
M. Yonemura;T. Osuki;H. Terasaki;Y. Komizo;Masugu Sato;H. Toyokawa
利用强同步辐射时间分辨X射线衍射技术对焊接过程中的定向凝固过程进行了原位表征。然后，在一个实际的制造过程中的焊接条件下，钢中的枝晶行为进行了研究，使用TRXRD方法进行原位焊缝观察与高灵敏度的二维像素探测器。因此，在快速冷却过程中的晶体生长被详细捕获，并采用了系统的峰形分析，以获得必要的信息，控制焊缝组织。研究结果为低合金定向凝固快速冷却组织的形成提供了理论依据。同时，我们讨论了检测成核的可能性。
In situ characterization of directional solidification process during welding was carried out using the time resolved X-ray diffraction technique utilizing intense synchrotron radiation. Then, behaviour of dendrites in steels under welding conditions of a practical manufacturing process were investigated using the TRXRD method for in-situ weld observation with the uniquely-sensitive two-dimensional pixel detector. Consequently, the crystal growth during the rapid cooling was caught in detail and employed a systematic peak profile analysis in order to acquire the essential information for controlling the weld microstructure. Our results would suggest the microstructure formation process of low alloy in directional solidification during rapid cooling. Simultaneously, we discuss the possibility of detecting the nucleation.