| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Hierarchical Investigations of Heterogeneities in an As-fabricated Electron Beam Melted Ni-based Superalloy |
| Author(s) |
Bryan Lim, Andrew J. Breen, Xiaozhou Liao, Sophie Primig, Simon P. Ringer |
| On-Site Speaker (Planned) |
Bryan Lim |
| Abstract Scope |
Many difficulties remain in creating usable electron beam powder bed fused Ni-based superalloys without further post processing for aerospace and maritime applications; especially as mission critical parts/replacements for in-service turbine blades and heat exchangers. The most promising and researched method insofar is to optimise the print parameters for commercial superalloys; to achieve comparable mechanical properties to traditional manufacturing methods. However, to do so is commonly costly due to the requirement of performing large empirical print parameter sweeps. Hence, there is a need to understand the entire processing-microstructure-property relationship and any instabilities and heterogeneities that arise from the atomic to macro length scale. Here, we present the inherent hierarchical microstructure and property heterogeneities of a commercial Ni-based superalloy, fabricated using a random spot melt scan strategy. Application of these multi-scale relationships to future thermodynamic/kinetic powder bed fusion simulations will allow a true materials engineering-based print parameter design of commercial superalloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Characterization |