@article{9a4befdd765d46edb9443365026f0d44,
title = "Crystallographic orientation-dependent deformation characteristics of additive manufactured interstitial-strengthened high entropy alloys",
abstract = "In this study, laser powder bed fusion (LPBF) was used for the fabrication of an interstitial-strengthened high entropy alloy (iHEA), Fe49.5Mn30Co10Cr10C0.5 (at.%). The as-fabricated iHEA possesses excellent strength-ductility synergy during tensile loading, with fracture strength reaching up to 1109 MPa at 37% engineering strain. Electron backscatter diffraction (EBSD) and high energy synchrotron X-ray diffraction were used to evaluate the microstructural characteristics of the material. In-situ EBSD analysis during uniaxial tensile testing was performed to unveil the deformation mechanisms. Moreover, crystallographic orientation-specific micropillar compression tests were conducted to determine how the grain deformation characteristics differ between orientations. Due to the activation of multiple slip systems and the homogeneous plastic flow, the [111] orientation demonstrated a higher yield strength and continuous work hardening rate. This research helps in clarifying grain orientation-specific contributions to the bulk mechanical response of additively manufactured HEA.",
keywords = "Crystallographic orientation, High entropy alloy, Laser powder-bed fusion, Micropillars, Synchrotron X-ray diffraction",
author = "Wei Zhang and Jiajia Shen and Oliveira, {J. P.} and Kooi, {Bart J.} and Yutao Pei",
note = "Funding Information: info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50025%2F2020/PT# WZ acknowledges the China Scholarship Council for funding the Ph.D. grant (CSC no. 201906250212). JPO and JS acknowledge Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia (FCT - MCTES) for its financial support via the project UID/00667/2020 (UNIDEMI). JPO acknowledges the funding of CENIMAT/i3N by national funds through the FCT-Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia, I.P. within the scope of Multiannual Financing of R&D Units, reference UIDB/50025/2020-2023. JS acknowledges the China Scholarship Council for funding the Ph.D. grant (CSC no. 201808320394). The authors acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Beamtime was allocated for proposal I-20210899 EC. The research leading to this result has been supported by the project CALIPSOplus under the Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. Funding Information: WZ acknowledges the China Scholarship Council for funding the Ph.D. grant (CSC no. 201906250212 ). JPO and JS acknowledge Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia (FCT - MCTES) for its financial support via the project UID/00667/2020 (UNIDEMI). JPO acknowledges the funding of CENIMAT/i3N by national funds through the FCT- Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia , I.P., within the scope of Multiannual Financing of R&D Units, reference UIDB/50025/2020-2023 . JS acknowledges the China Scholarship Council for funding the Ph.D. grant (CSC no. 201808320394 ). The authors acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Beamtime was allocated for proposal I-20210899 EC. The research leading to this result has been supported by the project CALIPSOplus under the Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. Publisher Copyright: {\textcopyright} 2022",
year = "2023",
month = jan,
day = "1",
doi = "10.1016/j.scriptamat.2022.115049",
language = "English",
volume = "222",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier Science B.V., Amsterdam.",
}