お知らせ

In our laboratory, we investigate the mechanisms of microstructure formation that fundamentally determine the properties of materials, focusing on solidification phenomena in which metals, semiconductors, and other materials transform from liquid to solid. In processes such as casting, welding, and crystal growth, as well as in recently emerging metal additive manufacturing (3D printing), solidification proceeds under extremely rapid heating and cooling conditions, leading to the possibility of forming novel microstructures and material properties that cannot be achieved by conventional methods. By utilizing high–time-resolution in-situ observation with synchrotron radiation facilities, we directly visualize the moments when materials melt, flow, and solidify, thereby advancing the understanding of phenomena that have previously relied largely on indirect inference. Furthermore, by integrating these observations with theoretical frameworks and numerical modeling, we systematically clarify how alloy composition and thermal conditions influence the formation of solidification microstructures, and develop new guidelines for materials design. Through the integrated study of solidification from both scientific and engineering perspectives, we aim to contribute to the creation of high-performance materials and the advancement of next-generation manufacturing processes.