|About this Abstract
|2023 TMS Annual Meeting & Exhibition
|Advanced Characterization of High-temperature Alloys: Phase Evolution during Manufacturing and Service-induced Deformation
|Grain Boundary Microstructure Optimization in Ni-Co-based Wrought Superalloys
|Akane Suzuki, Steve Buresh, Richard DiDomizio, Scott Oppenheimer, Ian Spinelli
|On-Site Speaker (Planned)
Ni-Co-based gamma + gamma-prime superalloy compositions containing high W were explored for designing a wrought superalloy with a combination of superior high temperature strength and environmental resistance at temperatures above 927C (1700F). Effects of alloying elements on ductility, creep life, hold-time low cycle fatigue life, fatigue crack growth behavior, oxidation resistance and manufacturability were investigated for achieving a balance of properties. Detailed characterization of phases and morphology of precipitates was performed, and it was found that a formation of Co2W Laves precipitates along grain boundaries plays an important role in improving ductility in the intermediate temperature range and fatigue crack growth behavior.
|High-Temperature Materials, Mechanical Properties, Environmental Effects