About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development IV: Rapid Development
|
Presentation Title |
Mechanical Behavior of Functionally Integrated Materials Produced by Directed Energy Deposition |
Author(s) |
Benjamin E. MacDonald, Baolong Zheng, Sen Jiang, Penghui Cao, Lorenzo Valdevit, Enrique J. Lavernia, Julie M. Schoenung |
On-Site Speaker (Planned) |
Benjamin E. MacDonald |
Abstract Scope |
Injected powder directed energy deposition additive manufacturing (DED-AM) enables the precise control of composition as a function of location in the built part. This control has enabled the field of research in so-called functionally integrated materials (FIMs) where this control allows for the development of site-specific functionality in both mechanical and physical properties. In this work, gradients of 316L stainless steel and Haynes 282 nickel-based superalloy are deposited through the manipulation of two independent powder delivery systems of a DED-AM system. Deposits containing no gradient interlayer, a 50% increment interlayer, a 25% increment interlayer, and a 10% increment interlayer are synthesized to determine the effects of resolution on joining the two feedstock materials. Through microstructural and mechanical characterization, the role of local compositional changes on the printability and mechanical behavior is elucidated. The experimental results are compared to predictions of phase stability and solidification behavior calculated using Thermo-Calc software. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Joining, ICME |