About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Competing and Collaborating Phase Transitions Studied within Cluster Variation Method |
Author(s) |
Tetsuo Mohri |
On-Site Speaker (Planned) |
Tetsuo Mohri |
Abstract Scope |
In an alloy system, it is often observed that multiple phase transitions take place in competing and/or collaborated manner. This includes a chemical ordering transition associated with magnetic ordering. Based on the spirit of Continuous Displacement Cluster Variation Method (CDCVM), we formulated multiple phase transitions within order-disorder transitions of a multicomponent alloy. In the CDCVM, displaced atoms from a Bravais lattice point are regarded as different atomic species and additional freedom due to the displacement is mapped onto configurational freedom of multicomponent alloy on a rigid lattice. In a similar manner, multiple phase transitions of a binary alloy originating from various internal freedoms are modelled by assigning different atomic interaction energies in a multicomponent alloy. The present study is able to deal with multiple phase transitions based on a single free energy formula. |
Proceedings Inclusion? |
Planned: |