| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
2024 Graduate Student Poster Contest
|
| Presentation Title |
SPG-8: Multi-Modal and Multi-Material Metal Additive Manufacturing - A Review |
| Author(s) |
Ananth Balasubramanian, Ashley Paz y Puente, Eric Payton |
| On-Site Speaker (Planned) |
Ananth Balasubramanian |
| Abstract Scope |
Past additive manufacturing (AM) research has primarily focused on a single material (e.g. Ti, Ni, Al, steel) with separate laser powder bed fusion (L-PBF) or directed energy deposition (DED) techniques. However, the potential for using AM for compositionally and functionally graded materials has long been a motivating vision for engineers. Recent studies have explored multi-material designs involving dissimilar metals with and without interlayers, leveraging both L-PBF and DED. In this work, we propose a novel framework for material selection in the AM of graded structures. It is found that the order of materials used in AM is critically important due to the effects of laser absorption and thermal mismatch strains. Additionally, the order of AM modalities provides a strategy for microstructure manipulation because the rapid cooling rates with L-PBF induce strong solute trapping effects whereas DED typically produces larger melt pools, enabling uniform constituent mixing. |