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Meeting 2025 TMS Annual Meeting & Exhibition
Symposium Sustainability of High Temperature Alloys
Presentation Title Development of Direct Recycling Technique for Advanced Ni-base Single Crystal Superalloys
Author(s) Kyoko Hashi Kawagishi, Chihiro Tabata, Satoshi Utada, Tadaharu Yokokawa, Shinsuke Suzuki, Hiroshi Harada
On-Site Speaker (Planned) Kyoko Hashi Kawagishi
Abstract Scope In order to improve the efficiency of gas turbine engines, increase of turbine inlet temperature is most effective. Ni-base single crystal superalloys are applied to the high-pressure turbine blades because of their excellent characteristics in high temperature mechanical properties and environmental properties, and increase of the temperature capability of superalloys is still necessary. National Institute for Materials Science (NIMS) has been developing world-leading Ni-base superalloys for the turbine blades and discs. However, high-performance advanced single crystal superalloys contain Re and Ru, which hinders the practical application of the alloys. Therefore, “direct complete recycling" technique was proposed with the aim of promoting the practical application of advanced alloys through efficient use of resources and cost reduction. This technique is expected to contribute to reducing the manufacturing costs not only of advanced alloys, but of all other single crystal superalloys.
Proceedings Inclusion? Planned:
Keywords High-Temperature Materials, Recycling and Secondary Recovery,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Characterising the effect of environment and salt concentration on the fatigue life of a nickel disc alloy
Composition optimization of Inconel 718 via cluster formula and experimental verification
Development of Direct Recycling Technique for Advanced Ni-base Single Crystal Superalloys
Effects of an oxidising environment on the dwell fatigue of single crystal Ni-based superalloys at intermediate service temperature
Effects of Fe substitution on CoNi-based superalloys
Effects of residual Ca content on the mechanical response of a new polycrystalline Ni-base superalloy
Enhancement of crack propagation resistance by healing treatment in boron containing FeNi-base superalloy
Evaluation of Forming Stability and Crack Resistance in Inconel 718 Under Heat Treatment Conditions in Hot Forging Processes
Extending Service Life through Location Specific Lifing of Components
Frequency and Directionality of the Onset of Heteroepitaxial Recrystallization
Heat-Resistant Nickel Alloy ЖС3ДК-ВІ Modification with Titanium Carbonitride Ultrafine Powders
Microstructural and mechanical properties evolution of extremely long-term thermal exposed Superalloy MarM247 after rejuvenation heat treatment
Microstructural Characterization of René N4 After Rejuvenation Heat Treatment
Microstructure, Mechanical, Oxidation and Electrochemical Behavior of Thermo-Plastically Deformed High Entropy Alloys
Novel Environmentally Friendly Cr-Si Slurry Coatings for Turbine Applications
Optimization of Ductility and Creep Life of Inconel 939-Type Nickel-Based Superalloys
Phase-field-informed micromechanical approach to creep behavior in Ni-based single-crystal superalloys at the dendritic scale
Pushing the temperature limit of nickel-based superalloy
Recrystallization criteria for Nickel-based single cristal superalloys
Recycling and Element Recovery in Nickel-base Superalloys
Relationship between manufacturing parameters and creep performance of Inconnel718 fasteners
Remanufacturing and Repair of Superalloys: A Focus on Alloy 718
Simulation of the mechanical behavior during solidification and possible recrystallization during heat treatment stages of a nickel-based single-crystal superalloys
Temperature and Size Dependent Mechanical Properties of Additively Manufactured GRX-810
Very high cycle fatigue life of Ni-based SX superalloy subjected to hot corrosion

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