On development of NiMo-SiC alloys via powder metallurgy for the use in molten salt environment

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dc.contributor.authorYang, Cen_AU
dc.contributor.authorMuránsky, Oen_AU
dc.contributor.authorZhu, HLen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorHuang, HFen_AU
dc.contributor.authorHuai, Pen_AU
dc.contributor.authorZhou, XTen_AU
dc.date.accessioned2021-03-14T19:51:57Zen_AU
dc.date.available2021-03-14T19:51:57Zen_AU
dc.date.issued2017-11-27en_AU
dc.date.statistics2021-03-09en_AU
dc.description.abstractA new generation of alloys, which rely on a combination of various strengthening mechanisms, has been developed for application in molten salt environment, namely in future molten salt reactors (MSR), and concentrating solar power (CSP) plants. In the current study, a battery of NiMo-based alloys containing varying amounts of SiC (0.5-2.5 wt%) were prepared by mechanical alloying from Ni-Mo-SiC powder mixture, The mechanical alloying was followed by spark plasma sintering and rapid cooling. Neutron Powder Diffraction (NPD), Electron Back Scattering Diffraction (EBSD) and Transmission Electron Microscopy (TEM) were employed in the characterization of the microstructural properties of these in-house prepared NiMo-SiC alloys. The present study shows that uniformly-dispersed SiC particles provide dispersion strengthening, the precipitation of nano-scale Ni3Si nano-precipitates provides precipitation strengthening, and the solid-solution of Mo in the Ni matrix provides solid-solution strengthening. In addition, formed Mo2C particles limit the grain growth of NiMo matrix thus further increasing the strength of these NiMo-SiC via Hall-Petch strengthening. As a result, these newly developed NiMo-SiC alloys possess superior strength in comparison to conventional forged NiMo alloys. However, it is shown that the cold welding of powders during the mechanical alloying leads to porosity, which might then lead to reduced ductility.© 2017 Engineers Australiaen_AU
dc.identifier.booktitle9th Australasian Congress on Applied Mechanics (ACAM9), University of NSW, Sydney, 27-29 November 2017en_AU
dc.identifier.citationYang, C., Muránsky, O., Zhu, H., Avdeev, A., Huang, H., Huai, P., & Zhou, X. (2017). On development of NiMo-SiC alloys via powder metallurgy for the use in molten salt environment. Paper presented to the 9th Australasian Congress on Applied Mechanics (ACAM9), University of NSW, Sydney, 27-29 November 2017. In Prusty, G. & Paradowska, A. (eds) 9th Australasian Congress on Applied Mechanics (ACAM9), University of NSW, Sydney, 27-29 November 2017, (pp. 508-515). Retrieved from: https://search.informit.org/doi/10.3316/INFORMIT.393707440721228en_AU
dc.identifier.conferenceenddate29 November 2017en_AU
dc.identifier.conferencename9th Australasian Congress on Applied Mechanics (ACAM9)en_AU
dc.identifier.conferenceplaceSydney, Australiaen_AU
dc.identifier.conferencestartdate27 November 2017en_AU
dc.identifier.editorsPrusty, G. & Paradowska, A.en_AU
dc.identifier.isbn9781925627022en_AU
dc.identifier.pagination508-515en_AU
dc.identifier.urihttps://search.informit.org/doi/10.3316/INFORMIT.393707440721228en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10531en_AU
dc.language.isoenen_AU
dc.publisherEngineers Australiaen_AU
dc.subjectAlloysen_AU
dc.subjectMetallurgical effectsen_AU
dc.subjectPowder metallurgyen_AU
dc.subjectMolten saltsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectMolten salt reactorsen_AU
dc.titleOn development of NiMo-SiC alloys via powder metallurgy for the use in molten salt environmenten_AU
dc.typeConference Paperen_AU
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