| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
Effect of Process Parameters on the Porosity of IN718 Produced by Laser Powder Bed Fusion |
| Author(s) |
Lonnie Smith, P. Chris Pistorius |
| On-Site Speaker (Planned) |
Lonnie Smith |
| Abstract Scope |
Laser powder bed fusion (LPBF) is a major process used to produce additively manufactured parts. One of the main issues with this process is the possibility for introduction of porosity into the parts built. These microscopic holes reduce the overall density of the part and can become sites for crack initiation and fatigue. Therefore, it is important to establish a connection between the process parameters used and the percentage of porosity found within these parts. Using dynamic x-ray radiography (DXR), the porosity of IN718 samples built using an EOS M290 was quantified. Samples were built using process parameters across PV space, including regions of expected keyholing and regions with predicted lack of fusion (LOF) porosity. Data gathered from the reconstructions of samples shows interesting results regarding the operating window of PV space for IN718. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |