About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Symposium
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2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
Low Cycle Fatigue Behavior of the Equiatomic CrMnFeCoNi High Entropy Alloy |
Author(s) |
Dayane Marques Oliveira, Easo P. George, Jeffery C. Gibeling |
On-Site Speaker (Planned) |
Dayane Marques Oliveira |
Abstract Scope |
The new concept of material design introduced by high entropy alloys (HEAs) combined with their promising mechanical performance has attracted significant recent research interest. However, there is still a limited number of studies focused on the fatigue behavior, particularly the mechanisms of cyclic deformation in these materials. In this work, we aim to understand the fundamental processes that induce fatigue damage in the equiatomic CrMnFeCoNi HEA using true plastic strain-controlled fully reversed low cycle fatigue (LCF) tests. The LCF results describe the evolution of the flow stress and the microstructural changes that accommodate plastic deformation during cyclic straining. After failure, observations of the polished gage sections and fracture surfaces reveal the slip characteristics, the crack path and the localized processes responsible for failure in this material. Additionally, comparisons with the LCF behavior of an austenitic stainless steel highlight the main differences in performance and cyclic deformation mechanisms. |
Proceedings Inclusion? |
Undecided |