About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Advances in Multi-Principal Element Alloys II
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Presentation Title |
J-44: In-situ Tensile Testing Using Synchrotron Radiation in a CrCoNi Multi-principal Element Alloy |
Author(s) |
Gustavo Bertoli, Benjamin Ellyson, Amy J. Clarke, Claudio S. Kiminami, Francisco G. Coury |
On-Site Speaker (Planned) |
Gustavo Bertoli |
Abstract Scope |
Among multi-principal element alloys (MPEAs), CrCoNi system alloys have attracted significant attention. For the present study, the Cr40Co40Ni20 MPEA was selected due to the good combination of mechanical strength and ductility, in addition to a great grain refining strengthening component. Its single-phase face centered cubic (FCC) structure partially transforms to hexagonal close packed (HCP) phase by transformation-induced plasticity (TRIP) effect during straining, which provides enhanced ductility. For this study, this MPEA was produced, cold formed, and recrystallized under different conditions to obtain samples with different grain sizes. In-situ tensile testing using synchrotron radiation were carried out at the Advanced Photon Source (APS) at Argonne National Laboratory, IL, USA. The density of defects, crystallite size and phase fraction were evaluated throughout the deformation process. The influence of grain size on these parameters, as well as on the TRIP/TWIP activation, are discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Phase Transformations, Characterization |