|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|Advances in Multi-Principal Elements Alloys X: Alloy Development and Properties
|Spinodal Decomposition in Multi-component Alloys
|Shalini Roy Koneru, Kamalnath Kadirvel, Yunzhi Wang
|On-Site Speaker (Planned)
|Shalini Roy Koneru
Multi-principal element alloys (MPEAs) with multiple phase microstructures have a great potential for future engineering applications. Researchers attributed the multi-phase microstructures observed in well-known MPEA systems such as TiZrNbTa, AlMo0.5NbTa0.5TiZr, Al0.5NbTa0.8Ti1.5V0.2Zr, and Fe15Co15Ni20Mn20Cu30 to spinodal assisted phase transformation pathways. The critical features of spinodal decomposition such as spinodal temperature and initial concentration modulations direction in the compositional space could play a vital in the development of multi-phase MPEAs with desired microstructures. Therefore, the present study develops a formulation to utilize CALPHAD databases to explore spinodal decomposition in well-known MPEA systems. It is seen that many MPEA systems are conditionally unstable against concentration modulations along a specific direction in the compositional space. The predictions agree well with available experimental observations.