|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||L-111: Thermomechanical and Nanoindentation Study of High Entropy Alloys Derived from Equilibrium Solidification
||Artashes Ter-Isahakyan, John Thomas Balk
|On-Site Speaker (Planned)
Equilibrium solidification of an equiatomic CrMnFeCoNiCu alloy resulted in a composite material containing Cr-rich needle precipitates in a Cr-poor single-phase high entropy alloy matrix. Mn 17 Fe 22 Co 24 Ni 24 Cu 13 and Cr 11 Mn 16 Fe 21 Co 21 Ni 19 Cu 12 compositions were identified from the matrix phase and were selected for arc melting of new alloys. Wedge-shaped samples were fabricated and cold rolled. Upon annealing, a microstructural gradient as a function of initial strain was produced, which allowed the annealing behavior of the alloys to be studied. Nanoindentation hardness measurements were taken along the gradient to evaluate mechanical properties with respect to recrystallized grain size. These results will be discussed in the context of size effects in mechanical behavior, and effects of rolling strain on recrystallization behavior and microstructural features of new grains.
||Planned: Supplemental Proceedings volume