| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
| Presentation Title |
Effect of Heat Treatment Condition on the Mechanical Properties of Laser-Powder Bed Fusion-Processed 18Ni300 Maraging Steel |
| Author(s) |
Kun Woo No, Jong Hyun Jung, Gyu Mi Han, Jung Gi Kim |
| On-Site Speaker (Planned) |
Kun Woo No |
| Abstract Scope |
Laser powder bed fusion (L-PBF) is one of the well-known additive manufacturing methods that allows to enhance complexity during part design. Because the 18Ni300 maraging steel is used to manufacture a complex-shaped tools and structural parts, many researchers tried to find the optimal processing parameters during L-PBF. Although several works found the optimal parameters for 18Ni300 maraging steel minimize the external defects (e.g. lack-of-fusions), their microstructure is different with conventional products due to the repetitive melting-solidification cycles. Thus, the heat treatment behavior will be different as their different initial microstructure, but the research on optimal heat treatment condition was not well established yet. In this work, the effect of direct aging condition on the mechanical properties and microstructural evolutions of 18Ni300 maraging steel has been investigated. To quantify precipitates and cell structure after aging, multi-scale microstructural analysis was conducted and their role on the mechanical properties will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |