Yoko Mitarai Professor

	+81-4-7136-3783

	mitarai.yoko[at]edu.k.u-tokyo.ac.jp * In your correspondence, please replace [at] with "@" in the above email address.

	High-temperature materials design, microstructure control, high-temperature strength, creep, deformation mechanism, shape memory alloys

Research

High-temperature materials are used in jet engines of airplane and gas turbines in power plants. We focus on Ti alloys used in compressors of jet engine and high-temperature shape memory alloys which are expected to be used as high-temperature devices. We are attempting to improve high-temperature mechanical properties by microstructure control using forging, rolling, and heat treatments. We also attempt to develop new materials with high performance using 3D additive manufacturing which has been attractive as new processing. In addition, high-entropy alloys which are expected as new generation structural materials will be applied for high-temperature materials and shape memory alloys. The detailed research topics are followings

1. Development of high-temperature Ti alloys for jet engines with valance of creep and fatigue properties.
2. Development of high-temperature materials using 3D additive manufacturing
3. Understanding of high-temperature deformation of high-entropy alloys
4. Understanding of high-temperature shape memory effect and design of new high-temperature shape memory alloys

主要研究論文

Y. Yamabe-Mitarai, S. Kuroda, N. Motohashi, H. Matsumoto, G. Miyamoto, E. Chandiran, Y. Yoshida, Y. Itsumi, Effect of forging temperature on microstructure evolution and tensile properties of Ti-17 alloys, Mater. Trans. 60, 9 (2019) 1733-1739.
W. Tasaki, M. Shimojo, Y. Yamabe-Mitarai, Thermal cyclic properties of Ti-Pd-Pt-Zr high-temperature shape memory alloys, Crystals, 9 (2019) 595-611.
K. Shimagami, T. Ito, Y. Toda, A. Yumoto, Y. Yamabe-Mitarai, Effect of Zr and Si addition on high-temperature mechanical properties and microstructure in Ti-10Al-2Nb-based alloys, Mater. Sci, Eng. A, 756 (2019) 46-53.