|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|Additive Manufacturing: Nano/Micro-mechanics and Length-scale Phenomena
|Hardening Rate Dependent Deformation Behavior of Additively Manufactured Inconel 718 during Nano-scratch
|Mustafa Rifat, Saurabh Basu
|On-Site Speaker (Planned)
In the present study, the effect homogenization and solution annealing heat treatment on the deformation behavior of Direct Metal Laser Sintered Inconel 718 during nano-scratching is investigated. Two samples- one as-printed and another heat treated were nano-scratched using 1mN and 2mN loads, respectively, ensuring similar scratch depths. Electron Backscattered Diffraction (EBSD) and Atomic Force Microscopy (AFM) were implemented to characterize the microstructure and scratch profile, respectively. Subsequently, a scale-free isotropic finite element framework was used to extract the strain tensor with which Taylor factor of various grains in nano-scratch-like deformation was calculated. Using this information, the influence of hardening rate on pileup formation during nano-scratch was analyzed. These preliminary results suggest a strong influence of dislocation escape from surface as a contributing mechanism towards pileup formation during nano-scratch.
|Additive Manufacturing, Characterization,