|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Multi-Principal Elements Alloys X
||Phase Transition Zones in Compositionally Complex Alloy Films
||Daniel Goodelman, Andrea M Hodge
|On-Site Speaker (Planned)
Compositionally complex alloys (CCAs), a subset of multi-principal element alloys (MPEAs), have garnered significant attention due to their notable mechanical and physical properties. Previous studies have examined the influence of varying elemental composition on phase transitions in these materials, however they have prioritized pseudo-binary arrangements in which one “large” element is varied amongst several “small” elements. In this work, magnetron co-sputtering is employed to vary the composition of two “large” elements, Al and Ti, within the AlCrFeNiTi and AlCoFeNiTi CCA families to examine their influence on phase morphology transitions. Additionally, Cr is substituted with similarly sized but structurally dissimilar Co to observe the effect of the “small” elements on the overall microstructure. Furthermore, nanoindentation is performed to study the effect of crystallographic transitions on mechanical properties. The phase transitions are then mapped for each system to develop a guide for future alloy development.
||Characterization, High-Entropy Alloys, Surface Modification and Coatings