||Chuan Zhang, Jun Zhu, Fan Zhang, Shuanglin Chen, Chuan Zhang, Rui Feng, Shuying Chen, Haoyan Diao, Peter K Liaw
The equilibrium microstructures of Al-Co-Cr-Cu-Fe-Ni and Al-Cr-Fe-Mn-Ti multiple-principal-component alloys was experimentally investigated, using XRD (X-ray powder diffraction), SEM/EDS (scanning electron microscope/energy dispersive x-ray spectroscopy analysis), TEM (transmission electron microscopy), and APT (atom-probe tomography). The observed microstructures were used to validate and improve the thermodynamic databases for these two systems. These two databases were, then, employed to predict phase stability in a wide temperature and composition range. Such information can be used as effective guidelines for the design and development of lightweight high entropy alloys.
Acknowledgements: Thanks the financial support from the Department of Energy (DOE), Office of Nuclear Energy’s Nuclear Energy University Program (NEUP) 00119262, the DOE, Office of Fossil Energy, with National Energy Technology Laboratory (DE-FE-0008855, 0011194, and 0024054), and the U.S. Army Research Office (W911NF-13-1-0438), with V. Cedro, R. Dunst, R. O. Jensen, L. Tan, S. Lesica, S. Markovich, and S. N. Mathaudhu as contract monitors.