|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Multi-Principal Elements Alloys X
||A High-Throughput Investigation of Microstructure-Property Relationships in NbVZr
||Katharine Padilla, Mu Li, Zhaohan Zhang, Rohan Mishra, Katharine Flores
|On-Site Speaker (Planned)
Many studies of refractory complex concentrated alloys (RCCA) focus on identifying equiatomic, single-phase solid solution alloys with high ductility and other favorable mechanical properties. However, multiphase alloys offer an additional degree of design flexibility and the potential for superior performance. In this work, we apply a high-throughput synthesis technique to investigate the microstructure-mechanical property relationship in equiatomic NbVZr as a model RCCA. We use direct laser deposition to rapidly synthesize microstructural libraries under a wide range of heating and cooling rates. BCC dendrites are observed separated by two Laves phases, cubic C15 and hexagonal C14, which grow finer with decreasing heat input. Dendrite size, spacing, and morphology are correlated with the laser power and travel speed. Nanoindentation experiments are performed to investigate the relationship between microstructure and mechanical properties at temperatures up to 600 C.
||High-Entropy Alloys, Additive Manufacturing, Characterization