| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
High Entropy Materials: Concentrated Solid Solution, Intermetallics, Ceramics, Functional Materials and Beyond
|
| Presentation Title |
The Use of CALPHAD Based Tools to Simulate Applications of HEA Materials |
| Author(s) |
Huahai Mao, Lina Kjellqvist, Paul Mason, Qing Chen |
| On-Site Speaker (Planned) |
Paul Mason |
| Abstract Scope |
Modeling HEAs using CALPHAD presents unique challenges compared with other alloy systems due to the lack of a single principle element. Here we describe the approach taken in developing the TCHEA thermodynamic database, which contains 26 elements, where almost all underlying binary and over 400 ternary systems have been critically evaluated to capture the composition and temperature dependence.
Examples will be given of i) the development of cemented carbide cutting-tools with HEA as the binder phase demonstrating the design strategy in terms of thermodynamic equilibrium between HEA and carbides; ii) studying the oxidation behavior of HEAs and the corresponding (high entropy) oxide products such as those with halite or spinel structures using a combination of compatible databases TCHEA with TCOX; iii) the coupling of a thermodynamic database with a compatible kinetic database to simulate the precipitation of intermetallic phases from HEAs during annealing. |