|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Deformation and Transitions at Interfaces
||L-53: Grain Boundary Mechanisms in Nickel-based Superalloys
||John Rotella, Martin Detrois, Sammy Tin, Michael Sangid
|On-Site Speaker (Planned)
Mechanical behavior of structural materials are governed by their grain boundaries. Annealing twins have been shown as favorable boundaries to enhance strength and ductility. Through the process of Grain Boundary Engineering (GBE), we have the ability to tailor the volume fraction of the annealing twins to improve the mechanical behavior of the material. In this work, concurrent electron backscatter diffraction and digital image correlation will be used to study the heterogeneous strain of GBE nickel-based superalloys. Specifically, superalloys with various grain sizes and contents of annealing twins are cyclically loaded to determine the role of microstructure on strain evolution and accumulation.