Low neutron cross-section FeCrVTiNi based high-entropy alloys: design, additive manufacturing and characterization

Simple item page
dc.contributor.authorDong, BSen_AU
dc.contributor.authorWang, ZYen_AU
dc.contributor.authorZhu, HLen_AU
dc.contributor.authorMuránsky, Oen_AU
dc.contributor.authorQiu, ZJen_AU
dc.contributor.authorShen, Cen_AU
dc.contributor.authorPan, ZXen_AU
dc.contributor.authorLi, HJen_AU
dc.date.accessioned2023-04-06T00:43:11Zen_AU
dc.date.available2023-04-06T00:43:11Zen_AU
dc.date.issued2022-01-13en_AU
dc.date.statistics2022-12-09en_AU
dc.descriptionOpen Access. This article is licensed under a Creative Commons Attribution 4.0 International License.en_AU
dc.description.abstractThe development of high-entropy alloys (HEAs) based on the novel alloying concept of multi-principal components presents opportunities for achieving new materials with desired properties for increasingly demanding applications. In this study, a low neutron cross-section FeCrVTiNi-based HEA was developed for potential nuclear applications. A face-centred cubic (FCC) HEA with the nominal composition of FeCr0.4V0.3Ti0.2Ni1.3 is proposed based on the empirical thermodynamic models and the CALculation of PHAse diagrams (CALPHAD) calculation. Verifications of the predictions were performed, including the additive manufacturing of the proposal material and a range of microstructural characterizations and mechanical property tests. Consistent with the prediction, the as-fabricated HEA consists of a dominant FCC phase and minor Ni3Ti precipitates. Moreover, significant chemical segregation in the alloy, as predicted by the CALPHAD modelling, was observed experimentally in the produced dendritic microstructure showing the enrichment of Ni and Ti elements in the interdendritic regions and the segregation of Cr and V elements in the dendritic cores. Heterogenous mechanical properties, including microhardness and tensile strengths, were observed along the building direction of the additively manufactured HEA. The various solid solution strengthening effects, due to the chemical segregation (in particular Cr and V elements) during solidification, are identified as significant contributing factors to the observed mechanical heterogeneity. Our study provides useful knowledge for the design and additive manufacturing of compositionally complex HEAs and their composition-microstructure-mechanical property correlation. © The Author(s) 2022en_AU
dc.description.sponsorshipThis work was supported by the 2018 Australian Nuclear Science and Technology Organisation (ANSTO) - University of Wollongong Joint Project Seed Funding. The author Dong B is supported by the China Scholarship Council (CSC).en_AU
dc.identifier.articlenumber2022003en_AU
dc.identifier.citationDong, B., Wang, Z., Zhu, H., Muránsky, O., Qiu, Z., Shen, C., Pan, Z. & Li, H. (2022). Low neutron cross-section FeCrVTiNi based high-entropy alloys: design, additive manufacturing and characterization. Microstructures, 2, 2022003. doi:10.20517/microstructures.2021.09en_AU
dc.identifier.issn2770-2995en_AU
dc.identifier.journaltitleMicrostructuresen_AU
dc.identifier.urihttps://doi.org/10.20517/microstructures.2021.09en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14809en_AU
dc.identifier.volume2en_AU
dc.language.isoenen_AU
dc.publisherOAE Publishingen_AU
dc.subjectAlloysen_AU
dc.subjectDesignen_AU
dc.subjectFabricationen_AU
dc.subjectAdditivesen_AU
dc.subjectMicrostructureen_AU
dc.subjectMaterialsen_AU
dc.subjectNeutronsen_AU
dc.subjectCross sectionsen_AU
dc.titleLow neutron cross-section FeCrVTiNi based high-entropy alloys: design, additive manufacturing and characterizationen_AU
dc.typeJournal Articleen_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
4530.pdf
Size:
122.13 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles