|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deformation and Damage Mechanisms in High Temperature Ni, Co and Fe-based Superalloys
||Mechanical Properties and Microstructural Characterization of Inconel Alloy 725 Variants
||Martin Detrois, Kyle A Rozman, Paul D Jablonski, Jeffrey A Hawk
|On-Site Speaker (Planned)
With a combination of high strength, toughness and corrosion resistance, Inconel 725 (IN725) has been widely used in marine and land-based power industries. Typically, the alloy presents a conventional γ-γ'/γ'' microstructure when appropriate aging treatments are employed. Although the corrosion resistance of IN725 is significant, its use is limited to relatively low temperatures when compared to other γ' precipitate-strengthened alloys. This can limit the use of the alloy as turbine engine components or in other power-generation applications. Variations to the Ti/Al ratio were considered with respect to the precipitate phases stability. Thermodynamic predictions were used to help in the design process and were validated experimentally. The various compositions investigated produced microstructures differing in grain boundary phases and γ′ precipitate sizes and fractions. Tensile and creep testing were performed and the effect of the various compositions and microstructures on the mechanical performance of the modified IN725 alloys will be discussed.
||Planned: Supplemental Proceedings volume