|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||Integrated Computational Materials Engineering (ICME) Design of High Performance Copmlex Concentrated Alloys
||Marie Thomas, Ricardo Komai, Chris Kantner, David Smathers, Cameron McNamara
|On-Site Speaker (Planned)
Complex Concentrated Alloys (CCA), particularly those containing refractory elements, have the potential to surpass baseline alloy performance in both aero- and land-based high temperature applications. Since the number of CCA compositions is nearly infinite, a predictive methodology is necessary towards the optimization of a CCA. Integrated Computational Materials Engineering (ICME) tools are being developed and employed for the design of a low density, oxidation-resistant refractory CCA.
A high throughput CALPHAD-informed approach has been implemented to design novel refractory CCAs (selected from 17 elements) with a large single-phase BCC region, narrow solidification window, high solidus temperature, low density and good oxidation resistance. The design constraints predicted a family of Nb-based alloys and examined the effect of Al additions. A review of the ICME design approach of complex concentrated alloys will be covered leading to the production of alloy prototypes for validation of the approach.