About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Process-Structure-Property Relationship in Selective Laser Melting of 18Ni-300 Maraging Steel |
Author(s) |
Tianyi Lyu, Sagar Patel, Yu Zou |
On-Site Speaker (Planned) |
Tianyi Lyu |
Abstract Scope |
Selective laser melting (SLM) of 18Ni-300 maraging steel has gathered considerable popularity in both industries and academia. Nevertheless, there lacks a comprehensive paradigm that correlates the process parameters, microstructure, and mechanical properties of as-built maraging steel. In this study, defect-free maraging steel samples are successfully fabricated under three melting modes (i.e., keyhole, transition, and conduction) with significantly different energy inputs. Microscopic characterization and mechanical tests reveal subtly different microstructures caused by initial solidification and cyclic reheating, as well as correspondingly distinct mechanical performances. The results bring insights into the thermophysical phenomena taking place at the melt pool during the printing process and serve as theoretical foundations for SLM of microstructural graded maraging steel. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Iron and Steel, Solidification |