| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Characterizing Inhomogeneous Deformation Across Melt Pool Boundaries in Additively Manufactured Parts |
| Author(s) |
John Fite, Suhas E Prameela, John Slotwinski, Tim Weihs |
| On-Site Speaker (Planned) |
John Fite |
| Abstract Scope |
The Powder Bed Fusion (PBF) additive manufacturing (AM) process produces metal parts with a wide variety of complex and intricate components. Although AM parts are often considered to be uniform bulk materials, our results from AlSi10Mg show that AM parts containing melt pool boundaries have unique local mechanical properties. Specifically, we use in situ SEM tensile testing and digital image correlation under load to show that deformation is higher within the melt pool boundaries compared with other regions in AlSi10Mg samples. We correlate unique melt pool boundary microstructures (like cell size and the heat affected zone) with tradeoffs in local mechanical properties and deformation characteristics, and we report ductility and tensile strengths for AlSi10Mg samples. The measured differences in local deformation suggest that predictions of properties of AM parts should account for the presence of melt pool boundaries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Mechanical Properties |