|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Entropy Alloys VI
||Effects of Chemical Disorder on Radiation Response in Medium– and High–entropy Alloys
||Yanwen Zhang, Gihan Velisa, Shijun Zhao, Mohammad M. Ullah, Ke Jin, Chenyang Lu, Fuxiang Zhang, Hongbin Bei, Lumin wang, William J. Weber
|On-Site Speaker (Planned)
Alloying elements at low-concentrations into pure metals to form dilute alloys is a traditional approach to achieve desired materials properties, such as improved radiation performance. In either a mixture of metallic phases or in a solid solution in dilute alloys, limited chemical disorder is a common characteristic of the main matrix where solute elements have long been used to suppress point defects, to trap dislocations, and to mitigate radiation-induced damage. Fundamentally different from dilute alloys, recently developed medium– and high–entropy alloys contain multiple elemental species in equiatomic or high concentrations with the elements randomly arranged on a crystalline lattice. Due to the extreme chemical disorder, the atomic-level heterogeneity significantly affects defect formation, damage accumulation, and microstructural evolution. Recent advances in defect dynamics and irradiation performance of concentrated alloys are discussed.
This work was supported by the Energy Dissipation to Defect Evolution, an EFRC funded by the U.S. DOE, BES.
||Planned: Supplemental Proceedings volume