HEAT-RESISTANT MATERIAL DESIGN
MITARAI-YAMABE LAB.
INTRODUCTION OF LABORATORY
We develop innovative heat-resistant materials such as new titanium alloys, shape memory alloys and high-entropy alloys with high performance in high-temperature use, i.e., jet engines and power eneration systems. Especially, we focus on processing to maximize the relation between mechanical properties and microstructures. Heavy forging, 3D additive manufacturing etc. are the prospected technologies to improve the materials’ potential.
We have recently focus on High-entropy alloys (HEAs). HEAs have been expected to have high strength even at high temperature due to large lattice strain by mixing of several elements in a composition close to their equiatomic ratios. We will apply this not only to structural materials but also to high-temperature shape memory alloys to clarify their potential as high-temperature materials.
航空機ジェットエンジンに使われているTi合金や、新規材料として可能性を秘めた高温形状記憶合金・ハイエントロピー合金について高温での力学特性発現機構を明らかにし、新しい材料を創製していきます。
加工後に導入される歪み量を調べることにより、その後の熱処理により形成する組織制御に繋げる。
形成する組織により、同じ合金でもクリープ寿命が大きく異なる。
超高温試験機を用いて1000-2000℃の温度範囲で力学特性を評価しています。
MESSAGE
MATERIALS SCIENCE AND ENGINEERING IS THE KEY TECHNOLOGY FOR ALL KINDS OF ENGINEERING.
NEW MATERIALS CAN DESIGN UNLIMITED WORLD BEYOND THE UNIVERSE.
High-temperature metallic materials used for aircraft jet engines and other applications are a very challenging research topic because there are many problems to be solved, including not only high-temperature mechanical properties but also environmental resistance and microstructural stability to maintain stable mechanical properties. The microstructure of metallic materials changes depending on the process, which has a significant impact on high-temperature mechanical properties. Therefore, we aim to establish alloy design that can be used in the future by clarifying the relationship between microstructure and mechanical properties through microstructure controlling by various processes. Although it is difficult to dramatically improve properties in this field, I really enjoy investigating the possibilities of new alloys that no one has tried before. With Assistant Professor Sae Matsunaga, I look forward to working with the students to design new materials.
keyword
B2 / Orthorhombic structure / platinum group metals / high temperature shape memory alloys / monoclinic / B19 / martensitic transformation / orthorhombic / platinum group metals / high temperature shape memory alloys / shape memory alloys / intelligent materials / structural and functional materials
PROFILE : Professor Yoko Mitarai
1989 Bachelor of Engineering, Department of Metallurgical Engineering, Tokyo Institute of Technology
1991 Master of Engineering, Department of Metallurgical Engineering, Tokyo Institute of Technology
1994 Doctor of Engineering, Department of Metallurgical Engineering, Tokyo Institute of Technology
1994 JSPS fellowship(PD)Visiting Researcher, Manchester University (Britain)
1995 Researcher, National Research Institute for Metals (NRIM)
1999 Senior Researcher, NRIM
2001 NRIM changed to National Institute for Materials Science (NIMS)
2006 Group Leader, NIMS
2016 Deputy director of Research Center for Structural Materials, NIMS
2020 Professor, Department of Advanced Material Science, The University of TokyoLecturer
STUDENT VOICE : TAKESHI ISHIDA
I thought that research on high-temperature materials was easy to visualize because I could actually touch the materials and their mechanical properties are also a visible phenomenon.
Prof. Mitarai is very friendly, so we can ask them for advice and have a chat easily. They carefully guided me through my research, paper writing, and presentation.
In addition, the atmosphere of our laboratory is very friendly, so we can enjoy research.
MATERIALS DESIGN AND PROCESSING
We conduct research on heat-resistant materials used in aircraft jet engines, etc.
YOKO MITARAI & YAMABE LAB.,
Department Of Advanced Materials Science,
Graduate School of Frontier Sciences,
The University of Tokyo
Kashiwanoha 5-1-5,
Kashiwa,Chiba 277-8561, Japan
+81-4-7136-3783
mitarai.yoko@edu.k.u-tokyo.ac.jp
The Goal of Applied Physics
The goal of Applied Physics is to develop a stage = “new material” that can manipulate undeveloped degrees of freedom, to explore unknown phenomena created from that stage and to bring out excellent functions, and to bring out its excellent functions. The purpose is to contribute to the development of human society by elucidating the mechanisms and developing application fields for these phenomena and functions.
AMS (Advanced Materials Science)
Department Office
AMS (Advanced Materials Science),
Graduate School of Frontier Sciences,
The University of Tokyo
Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8561, Japan
Email : ams-office(at)ams.k.u-tokyo.ac.jp
Please change (at) to @.