|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Nano/Micro-mechanics and Length-scale Phenomena
||The role of microstructure on the creep response of additively manufactured IN718 using crystal plasticity
||Veerappan Prithivirajan, M Arul Kumar, Laurent Capolungo
|On-Site Speaker (Planned)
Additive manufacturing (AM) has garnered significant interest as it offers many advantages over the conventional techniques. AM also causes drastic variability in the microstructure, which controls the creep performance and rupture of the material, a common mode of failure under high temperature loading conditions. It is therefore necessary to understand the role of microstructure on the creep response to accelerate the certification of the AM material. The material of interest in this work is the AM Inconel 718 (IN 718), a high temperature Ni-based superalloy. In this study, we investigate the role of different microstructures (equiaxed and columnar) on the creep response of AM IN718 using a full-field fast Fourier transform based crystal plasticity model that accounts for dislocation glide, dislocation climb, and diffusion processes. We then compare our predictions with the experimental results.
||Additive Manufacturing, Copper / Nickel / Cobalt, Modeling and Simulation