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Time-resolved in-situ analysis of phase evolution for the directional solidification of carbon steel weld metal

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Abstract

Kinetic information about the phase transformation, during solidification process and solid-state transformation is essential to the material processing, such as welding. In our research group, in-situ phase identification system consisting of undulator beam and imaging plate have recently been used. The welding torch is driven by stepping-motor in the system. Those make possible that phase transformation can be identified in real-time under the condition of directional solidification and the spatial resolution of 100 × 500 µm. The time-resolution is 0.3125 seconds. In the present work, combination of analyzing method: the in-situ phase identification system, morphological observation by high-temperature laser scanning confocal microscopy and observation of microstructure at room temperature by OM, SEM and micro diffraction-system, is suggested to analyze the phase transformation during welding process. Phase transformation process of hypereutectoid carbon steel, during welding was analyzed as an example of combination observation.

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Authors and Affiliations

  1. Joining and Welding Research Institute, Osaka University, 567-0047, Ibaraki, Osaka, Japan

    H. Terasaki (Research Fellow) & Y. Komizo (Professor)

  2. R&D Laboratories, Sumitomo Metals, HYOGO 660-0891, Amagasaki, Japan

    M. Yonemuira (Senior Research Engineer) & T. Osuki (Research Engineer)

Authors
  1. H. Terasaki
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  2. Y. Komizo
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  3. M. Yonemuira
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  4. T. Osuki
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Terasaki, H., Komizo, Y., Yonemuira, M. et al. Time-resolved in-situ analysis of phase evolution for the directional solidification of carbon steel weld metal. Metall Mater Trans A 37, 1261–1266 (2006). https://doi.org/10.1007/s11661-006-1077-8

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  • DOI: https://doi.org/10.1007/s11661-006-1077-8

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