|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||High Entropy Alloys IV
||Microstructural Characterization and Phase Evolution of Al1.5CrFeMnTi and Al2CrFeMnTi
||Rui Feng, Chanho Lee, Peiyong Chen, Michael C. Gao, Chuan Zhang, Fan Zhang, Peter K. Liaw
|On-Site Speaker (Planned)
The Al1.5CrFeMnTi and Al2CrFeMnTi alloys are designed to explore light-weight high-entropy alloys using the CALPHAD approach. Microstructure characterizations, carried out using HEXRD, EBSD, SEM, EDS and TEM, indicate that the BCC solid solution, L21 and Laves (C14) phases constitute these two alloys in the as-cast and annealed states. Their atomic structures in liquid are also studied using ab initio molecular dynamics simulations. The Laves phase and BCC solid solution form first from liquid during solidification. At low temperature, disordered BCC solid solution transforms partially to the ordered L21 phase. Based on the microstructure characterization results, the thermodynamic database are optimized. The present study on Al- and Ti-containing multi-principal-element alloys helps pave the way towards future design and development of light-weight high-entropy alloys.
||Planned: A print-only volume