About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
L-35: Microstructural and Mechanical Response of CoCrFeNi- FCC Matrix HEA with Addition of Mo |
Author(s) |
Fabio da Costa Garcia Filho, Sergio Monteiro, Wendel Bezerra, Sheron Tavares |
On-Site Speaker (Planned) |
Sheron Tavares |
Abstract Scope |
High-entropy alloys have been considered a hot topic since their first report in the beginning of the 21th century. Their microstructural stability and mechanical properties were showed to be remarkable even at cryogenic temperatures. Herein, we report the investigation of the microstructure and mechanical properties of a CoCrFeNiMo0.2 high entropy alloy. The as processed alloy exhibits a metastable FCC single-phase structure, however, under certain conditions could lead to the precipitation of topologically close-packed (TCP) phases in the grains and at the grain boundaries. Microstructural evolution was assessed in the as-produced condition and after annealing at 950˚C for 24 hours. XRD and microscopic observation were used in this assessment. Mechanical properties were investigated using Vickers microhardness tests, tensile, and compression tests. In addition to that, a split-Hopkinson pressure bar (SHPB) was used to compress the hat-shaped specimens to study the local dynamic shear response of the alloy. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Characterization, Mechanical Properties |