Journal Article

PUBDB-2024-04928

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Time-resolved evolution of the deformation mechanisms in a TRIP/TWIP Fe$_{50}$Mn$_{30}$Co$_{10}$Cr$_{10}$ high entropy during tensile loading probed with synchrotron X-ray diffraction

Lopes, J. (Corresponding author)Extern* ; Shen, J. ; Maawad, E. ; Agrawal, P. ; Schell, N.HZG*Hereon* ; Mishra, R. S.Extern* ; Oliveira, J. P. (Corresponding author)Extern*

2024
Pergamon Press Frankfurt, M. [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.ijplas.2024.104048  doi:10.3204/PUBDB-2024-04928

Abstract: 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.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. CALIPSOplus - Convenient Access to Light Sources Open to Innovation, Science and to the World (730872) (730872)
3. FS-Proposal: I-20211528 EC (I-20211528-EC) (I-20211528-EC)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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