|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials 2021
||Application of a Viscoplastic Model Utilizing Creep Damage to an Ni-base Superalloy
||Nathan O'nora, Ali P. Gordon
|On-Site Speaker (Planned)
Demands for increased efficiency have led to a desire for increased temperatures in combustion processes. This has led to the development of Ni-base alloys which have favorable material properties such as the ability to retain strength at high temperatures. The desire to push these materials to their limits while maintaining component reliability has given rise more complicated constitutive modeling, such as viscoplastic modeling. In this study the Chaboche viscoplastic model is utilized in conjunction with a creep damage rule in order to capture the low-cycle fatigue (LCF) and creep-fatigue (CF) behavior of an Ni-base superalloy. The Chaboche model is implemented using three non-linear kinematic hardening terms with a static recovery portion in which the creep damage is accounted for. Methods for finding the model parameters are presented and the and final results compared to LCF and CF data taken from literature.
||Modeling and Simulation, Characterization, Copper / Nickel / Cobalt