About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
Presentation Title |
Load Partitioning in Inconel 718 With Harmonic Microstructures |
Author(s) |
Darren C. Pagan, Patrick Albert, Kenneth Peterson, Amlan Das, Suchismita Sarker, Douglas Wolfe |
On-Site Speaker (Planned) |
Darren C. Pagan |
Abstract Scope |
Metallic alloys with microstructures with extreme bimodal grain size distributions (termed harmonic microstructures) have exhibited unique combinations of strength and ductility. The exact origin of the favorable properties is still unclear but is likely due to the partitioning of stress and plastic strain among the constituent grain distributions. Here we use a combination of in situ far-field high-energy X-ray diffraction microscopy and traditional powder diffraction to examine micromechanical evolution in harmonic Inconel 718 during tensile loading. The Inconel 718 studied has a bimodal grain size distribution with a nearly 100x variation in grain diameter and was manufactured using field-assisted sintering technology (FAST), which is able to rapidly sinter varied powder distributions to theoretical density with minimal grain growth. The load partitioning among the constitutive grain size distributions is analyzed. |
Proceedings Inclusion? |
Undecided |