We are engaged in research on solidification and crystal growth dynamics of metallic and semiconductor materials. We are developing and combining measurement techniques such as real-time imaging and diffractometry using high-brilliance X-rays obtained at synchrotron radiation facilities, and we aim to create novel materials processing based on the facts obtained through observation of solidification and crystal growth phenomena.

1. T. Narumi, M. Ohta, K. Fujita, R. Katsube and H. Yasuda: “Equiaxed Solidification of Metastable Ferrite in Fe–22mass%Mn–0.7mass%C–0.3mass%Ti Alloy Nucleating on Ti Carbonitride”, Tetsu-to-Hagane, 111(2025), 163. https://doi.org/10.2355/tetsutohagane.TETSU-2024-125
2. T. Narumi, M. Ohta, K. Fujita, R. Katsube and H. Yasuda: “Nucleation-controlled Selection of Metastable Ferrite in Solidification of Fe-22mass%Mn-0.7mass%C Alloy”, ISIJ International, 64(2024), 1758. https://doi.org/10.2355/isijinternational.ISIJINT-2024-185
3. T. Narumi, T. Nakata, R. Kobayashi and H. Yasuda: “Time-resolved and in-situ Observation of Semisolid Deformation in Al–Cu Alloys with Equiaxed and Columnar Grain Structures by Using a Combination Technique of 4D-CT and 3DXRD”, ISIJ International, 61(2021), 1567. https://doi.org/10.2355/isijinternational.ISIJINT-2020-650
4. T. Narumi, T. Kawarasaki, Y. Kato, K. Morishita and H. Yasuda: “Quantitative analysis of solidification of equiaxed grains in Al-Cu alloy refined by inoculant TiB2 particles with using time-resolved X-ray tomography”, Journal of Japan Institute of Light Metals, 70(2020), 339. https://doi.org/10.2464/jilm.70.339
5. K. Nakano, T. Narumi, K. Morishita and H. Yasuda: “Characterization of growing dendrites in CrMnFeCoNi high-entropy alloy by time-resolved and in-situ tomography”, Materials Transaction, 61(2020), 596. https://doi.org/10.2320/matertrans.MT-MK2019006