| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
Computational Thermodynamics and Kinetics
|
| Presentation Title |
Genetic alloy design by nanoprecipitate control: stainless steels and aluminium alloys |
| Author(s) |
Pedro Rivera-Diaz-del-Castillo |
| On-Site Speaker (Planned) |
Pedro Rivera-Diaz-del-Castillo |
| Abstract Scope |
Alloy designers usually encounter a myriad of possibilities when engineering and optimising existing and new alloys. Thermochemical databases have recently become increasingly reliable, covering now a widespread number of phases, and can now be used for high-performance alloy design; however, the alloy designer encounters typically at least 5 relevant alloying elements combined with various heat treatment stages, temperatures and times. Due to computational time, thermodynamic and kinetic calculations for all possibilities are unfeasible. The present work describes a methodology to optimise properties such as strength, ductility and/or corrosion resistance in stainless steels and aluminium alloys. The key parameter to control is the formation of nanoprecipitaes. Strategies to deal with meta-stable phases for which energetics may be estimated form first principle calculations are introduced. Genetic algorithms are employed as a means to minimise the computational time to devise an optimal alloy composition and its corresponding heat treatment. |
| Proceedings Inclusion? |
Definite: A CD-only volume |