About this Abstract |
Meeting |
TMS Specialty Congress 2024
|
Symposium
|
Accelerating Discovery for Mechanical Behavior of Materials 2024
|
Presentation Title |
Investigating High Throughput Structure-property Relationships in Compositionally Graded Transitions From Ni-base Superalloy to Nb-base Refractory Alloy |
Author(s) |
David Collins, Marcus Hansen, James Haley, Brian Jordan, Yousub Lee, Soumya Nag |
On-Site Speaker (Planned) |
Soumya Nag |
Abstract Scope |
To make additive manufacturing (AM) a substantial manufacturing strategy, one must incorporate its unique attributes of optimizing alloy composition, design and manufacturing modalities to fit site-specific performance needs, by tailoring metal-metal or metal-ceramic compositional transitions. The current work highlights phase transformations and deformation mechanisms in AM Ni-based superalloy (IN718) graded to Nb-based refractory alloy (C103), specifically, successfully achieved via a third transition alloy to avoid regions of brittle phases. Thus, ex-situ DIC assisted tensile testing of monolithic and FGM builds were conducted at room temperature from as-built and heat treated specimens. Micro and nanoindentation studies across the graded transition zones were also performed on these specimens to obtain localized microstructure-property relationships. Overall, this effort is directed towards synergistic coupling of experimental and modeling tools to design pathways for compositional gradation and understand the thermal response on phase/stress evolution of additive builds in a spatio-temporal manner. |
Proceedings Inclusion? |
Definite: Other |