|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques II
||On the Effects of Additive Manufacturing Process Parameters on the Performance of Hastelloy-X: A Neutron Diffraction Experiment and CPFE Modeling
||Ahmed Aburakhia, Ali Bonakdar, Marjan Molavi-Zarandi, Joe Keller, Hamidreza Abdolvand
|On-Site Speaker (Planned)
Additive manufacturing (AM) has provided industry with the design flexibility to build mechanical parts with complex geometries to improve materials performance. However, understanding the influence of AM process parameters on the manufactured parts is challenging. A series of uniaxial neutron diffraction compression experiments were conducted on Hastelloy-X, to understand lattice strains evolution and how they are affected by changing the AM process parameters. Electron Backscatter Diffraction measurements were also conducted to characterize the initial texture of the samples. The measured microstructures are imported into a crystal plasticity finite element model to understand the active deformation modes. Results suggest that the specific energy input (SE = p / vd) has an influence on the AM-built parts, where p is the laser power, v is the scanning speed and d is the hatch spacing. Columnar grains with textured material are observed at higher SE, while random texture is observed at lower SE.
||Additive Manufacturing, Modeling and Simulation,