32NIMSTalk S2-4Abstract Ni-based superalloys are alloys with high heat resistance and are one of the important energy-related structural materials that are widely used as high-temperature components in aircraft engines, gas turbines for power generation, and even automobile engines. Increasing the turbine inlet temperature is extremely important for increasing the efficiency of gas turbine engines and reducing CO2emissions, so the development of Ni-based superalloys with excellent heat resistance has been actively carried out around the world.In particular, high-pressureturbine blades and disks in aircraft engine are rotating bodies that require a high degree of safety, and the Ni-based superalloy used has been required various properties, such as excellent creep properties, low-cycle fatigue properties, high-cycle fatigue properties, high-temperature crack growth resistance and fracture toughness, as well as high-temperature oxidation and corrosion resistance. In this way, Ni-based superalloys for high-pressure turbines are one of the "extreme environment materials" thatare extremely difficult to design and put into practical use among structural materials that require advanced performance under extremely harsh operating environments.NIMS has carried out continuous research activities on the design, development, and prediction technology of Ni-based superalloys for gas turbine applications for more than 40 years. As a result, we have successfully proposed various superalloys, includingsingle-crystal superalloys (TMS alloys) for turbine blades and Ni-Co-based superalloys (TMcrystal superalloy has been successfully applied to Rolls-Royce Trent 1000 engines.presentation, in addition to past efforts of development of superalloys, we will introduce the latest activities regarding to design, manufacturing, prediction of Ni-based superalloys for future applications.Principal Researcher, High Temperature Materials Group, Research Center for Structural MaterialsDevelopment of Ni-based Superalloys for Jet Engine Applications(RCSM), National Institute for Materials Science (NIMS)Session 2 ｜Toshio Osada is a principal researcher at High Temperature Materials Group in National Institute for Materials Science (NIMS), Japan. He received his Ph.D. from Yokohama National University, Japan, in 2009. From 2009 to 2012, he was a postdoctoral researcher at High Temperature Materials Center in NIMS. From 2012-2013, he worked as specially appointed assistant professor in Yokohama National University. From 2013-present, he worked in NIMS. From 2016-2018, he also worked as a guest researcher at Delft University of Technology, the Netherlands. Further, from 2022-present, he also worked as ProfessoratDepartment of Mechanical Engineering, Materials Science, and Ocean Engineering, Yokohama National University. His research interests include superalloys, self-healing ceramics, strength prediction, and gas turbine materials. NIMS Award Symposium 2023Toshio Osada High-temperature MaterialsW and TMP alloys) for disks. Especially, a single In this
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