About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale VIII
|
| Presentation Title |
Microstructural control and mechanical behavior of additive manufactured Cr-Ni-X eutectic alloys |
| Author(s) |
Xuanxin Hu, Mustafa Tobah, Arkajit Ghosh, Amit Misra |
| On-Site Speaker (Planned) |
Xuanxin Hu |
| Abstract Scope |
BCC refractory metals such as Cr exhibit high ductile-to-brittle transition temperature (DBTT) and thus limited ductility at ambient temperatures. Lamellar eutectics such as BCC Cr – FCC Ni are explored as model microstructures that may lower DBTT and enhance high-temperature strength. Higher-order alloying of the binary Cr-Ni eutectic is used to control the microstructure and improve strength-ductility synergy. Arc-melted Cr-Ni-X microstructures are refined to different length scales via laser or electron-beam remelting. Microstructures are characterized using scanning/transmission electron microscopy, and deformation mechanisms are elucidated using in situ nanomechanical characterization in scanning electron microscope. The measured mechanical properties are correlated with alloy chemistry, microstructure refinement and morphology to understand mechanisms that enhance dislocation mobility in BCC Cr at low homologous temperatures and provide high temperature strength. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Additive Manufacturing, |