| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Evolution of Creep Damage of 316L Produced by Laser Powder Bed Fusion |
| Author(s) |
Alexander Ulbricht |
| On-Site Speaker (Planned) |
Alexander Ulbricht |
| Abstract Scope |
Laser powder bed fusion (PBF-LB/M) tends to produce unique microstructures arising from rapid, directional cooling. These microstructures impact the damage mechanisms of metallics components manufactured by PBF-LB/M compared to conventionally manufactured variants of the same alloys. In particular, we present results of a study of the evolution of creep damage in stainless steel 316L specimens produced by PBF-LB/M. We used X-ray computed tomography to unravel the influence of the process-specific microstructure from the influence of the initial void distribution on creep damage mechanisms. To that end, the void distribution specimens tested at 600 °C and 650 °C was analyzed before the creep test, after an interruption, and after rupture. We conclude that the formation of damage is not connected to the initial void distribution. Instead, an accumulation of damage at grain boundaries resulting from extensive intergranular cracking is observed. We compared intergranular damage of PBF-LB/M/316L to hot rolled 316L. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |