TY  - JOUR
AU  - Lopes, Joao
AU  - Shen, J.
AU  - Maawad, E.
AU  - Agrawal, P.
AU  - Schell, N.
AU  - Mishra, R. S.
AU  - Oliveira, Joao Pedro
TI  - Time-resolved evolution of the deformation mechanisms in a TRIP/TWIP Fe<sub>50</sub>Mn<sub>30</sub>Co<sub>10</sub>Cr<sub>10</sub> high entropy during tensile loading probed with synchrotron X-ray diffraction
JO  - International journal of plasticity
VL  - 179
SN  - 0749-6419
CY  - Frankfurt, M. [u.a.]
PB  - Pergamon Press
M1  - PUBDB-2024-04928
SP  - 104048
PY  - 2024
AB  - The present research focuses on analyzing the deformation mechanisms associated with tensileloading of the Fe50Mn30Co10Cr10 high entropy alloy (HEA) using synchrotron x-ray diffraction(SXRD). This novel material is comprised by two major phases: γ-FCC and ε-HCP, where transformationinduced plasticity (TRIP) effectively transforms the first into the latter, upon theapplication of an external stress. However, the presence of thermally stable ε-HCP prior to loadingwill also influence the deformation mechanism of the material during mechanical solicitation. Assuch, here we investigate the activation of different strain accommodation mechanisms and theconsequent microstructural evolution. Four stages were identified in the mechanical response ofthis novel HEA, where the TRIP and the twinning induced plasticity (TWIP) deformation modesare the main events granting this HEA its outstanding properties. Such sequence of events allowsto evidence the effectiveness of the collaboration between the transformative capability of theγ-FCC phase and the work hardening potential of the ε-HCP phase. This analysis is performed viaquantitative and qualitative analysis of the SXRD data, allowing also to investigate the responsebehavior of specific crystallographic planes to the increasing stress throughout the experiment.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001264963000001
DO  - DOI:10.1016/j.ijplas.2024.104048
UR  - https://bib-pubdb1.desy.de/record/611463
ER  -