Dynamic strain aging of Al0.3CoCrFeNi high entropy alloy single crystals

Single crystals of Al0.3CoCrFeNi high entropy alloy were prepared by the floating zone method and the deformation behavior was examined. Dynamic strain aging accompanied by a serrated flow was found to occur in the single crystals at 873 K and 1073 K. Al atoms in the alloy played an important role in the dynamic strain aging. Distinct planar slip on (1 1 1) plane was also observed in Al0.3CoCrFeNi single crystals. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.