|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-51: Micro- and Mesoscale Mechanical Properties of a FeCrMnNi High Entropy Alloy Subject to Large Strain Extrusion Machining
||Jonathan Gigax, Osman El-Atwani, Quinn McCulloch, Berk Aytuna, Mert Efe, Saryu Fensin, Stuart A Maloy, Nan Li
|On-Site Speaker (Planned)
A recently developed bulk scale severe plastic deformation technique, large strain extrusion machining (LSEM), has been previous used to produce a fine-grained structure in steels and in pure W. The major advantage of the technique is its relative simplicity compared to traditional severe plastic deformation processes (i.e. high pressure torsion, equal channel angular extrusion). In this study, we subject an equiatomic FeCrMnNi high entropy alloy with a mixed face center cubic and body center cubic microstructure to various LSEM conditions. The microstructure was observed to have nanocrystalline grains in all conditions, with some more homogeneous than others. Nanoindentation showed a considerable increase in hardness for all LSEM conditions with respect to the base material. Mesoscale tensile testing revealed that while the tensile strength of the LSEM specimens was higher than that of the base material, the ductility was reduced significantly.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume