|About this Abstract
|2023 TMS Annual Meeting & Exhibition
|Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XXII
|Composition Design of Coherent Precipitate-strengthening Multi-principal Element Alloys by High-throughput CALPHAD-type Calculation
|Shao-Yu Yen, Hao-che Wang, Hideyuki Murakami, Shih-kang Lin
|On-Site Speaker (Planned)
For decades, multi-principal element alloys (MPEAs), also known as complex concentrated alloys (CCAs) and high entropy alloys (HEAs), has been attracting widely research due to their outstanding mechanical properties such as specific strength and tensile yield strength. Due to the numerous element combinations and multi-dimensional composition space for MPEAs, conventional exploration with trial-and–error experiments to study MPEAs is very costly and time-consuming. With the assistance of computational thermodynamics, the period of new alloy design can be significantly reduced. In this work, high-throughput CALPHAD-type calculation is performed with Pandat software and PanHEA database to search the alloy compositions can form ordered precipitate coherently embedding in disordered matrix. Compositions with γ/γ' in Al-Cu-Fe-Ni-Ti system as well as BCC/B2 in Al-Co-Cr-Mo-Ti system were selected as the prototypes for experiments, respectively. The results showed a good agreement with the calculations. A new calculation strategy for MPEAs design is proposed and demonstrated.
|High-Entropy Alloys, High-Temperature Materials, Modeling and Simulation