Microstructural study of the NbC to G-phase transformation in HP-Nb alloys. Vaché, N., Steyer, P., Duret-Thual, C., Perez, M., Douillard, T., Rauch, E., Véron, M., Renou, G., Dupoiron, F., Augustin, C., & Cazottes, S. Materialia, 9:100593, March, 2020. Paper doi abstract bibtex The microstructure of a centrifugally cast HP alloy was studied in its as-received state and after ageing at 900 °C. A multi-scale approach combining X Ray Diffraction (XRD), advanced electron microscopy modes (scanning and transmission electron microscopies (SEM, TEM), together with focused ion beam/SEM nanotomography (FIB-nt)) has been carried out to characterize the evolution of niobium carbides during ageing. After thermal treatment, the carbides exhibit a complex microstructure, consisting of a core of untransformed NbC, an intermediate layer of G-phase (Ni16Nb6Si7) with embedded nanometric titanium carbide precipitates, and an outer shell of alternating chromium carbides Cr23C6 and G-phase. A simple diffusion model was used to explain the faster external growth of G-phase compared to the internal NbC dissolution, and to determine a diffusion coefficient of niobium in the G-phase at 900 °C.
@article{vache_microstructural_2020,
title = {Microstructural study of the {NbC} to {G}-phase transformation in {HP}-{Nb} alloys},
volume = {9},
issn = {2589-1529},
url = {http://www.sciencedirect.com/science/article/pii/S2589152920300107},
doi = {10.1016/j.mtla.2020.100593},
abstract = {The microstructure of a centrifugally cast HP alloy was studied in its as-received state and after ageing at 900 °C. A multi-scale approach combining X Ray Diffraction (XRD), advanced electron microscopy modes (scanning and transmission electron microscopies (SEM, TEM), together with focused ion beam/SEM nanotomography (FIB-nt)) has been carried out to characterize the evolution of niobium carbides during ageing. After thermal treatment, the carbides exhibit a complex microstructure, consisting of a core of untransformed NbC, an intermediate layer of G-phase (Ni16Nb6Si7) with embedded nanometric titanium carbide precipitates, and an outer shell of alternating chromium carbides Cr23C6 and G-phase. A simple diffusion model was used to explain the faster external growth of G-phase compared to the internal NbC dissolution, and to determine a diffusion coefficient of niobium in the G-phase at 900 °C.},
language = {en},
urldate = {2020-02-05},
journal = {Materialia},
author = {Vaché, N. and Steyer, P. and Duret-Thual, C. and Perez, M. and Douillard, T. and Rauch, E. and Véron, M. and Renou, G. and Dupoiron, F. and Augustin, C. and Cazottes, S.},
month = mar,
year = {2020},
keywords = {Advanced material characterization, Ageing, G-phase, HP-Nb alloy, Microstructure, NbC},
pages = {100593}
}
Downloads: 0
{"_id":"Xs7BRDZmjRXrMjoEP","bibbaseid":"vach-steyer-duretthual-perez-douillard-rauch-vron-renou-etal-microstructuralstudyofthenbctogphasetransformationinhpnballoys-2020","authorIDs":["5e4187ae8491fadf0100003c","5e4263c582b0c2de01000103"],"author_short":["Vaché, N.","Steyer, P.","Duret-Thual, C.","Perez, M.","Douillard, T.","Rauch, E.","Véron, M.","Renou, G.","Dupoiron, F.","Augustin, C.","Cazottes, S."],"bibdata":{"bibtype":"article","type":"article","title":"Microstructural study of the NbC to G-phase transformation in HP-Nb alloys","volume":"9","issn":"2589-1529","url":"http://www.sciencedirect.com/science/article/pii/S2589152920300107","doi":"10.1016/j.mtla.2020.100593","abstract":"The microstructure of a centrifugally cast HP alloy was studied in its as-received state and after ageing at 900 °C. A multi-scale approach combining X Ray Diffraction (XRD), advanced electron microscopy modes (scanning and transmission electron microscopies (SEM, TEM), together with focused ion beam/SEM nanotomography (FIB-nt)) has been carried out to characterize the evolution of niobium carbides during ageing. After thermal treatment, the carbides exhibit a complex microstructure, consisting of a core of untransformed NbC, an intermediate layer of G-phase (Ni16Nb6Si7) with embedded nanometric titanium carbide precipitates, and an outer shell of alternating chromium carbides Cr23C6 and G-phase. A simple diffusion model was used to explain the faster external growth of G-phase compared to the internal NbC dissolution, and to determine a diffusion coefficient of niobium in the G-phase at 900 °C.","language":"en","urldate":"2020-02-05","journal":"Materialia","author":[{"propositions":[],"lastnames":["Vaché"],"firstnames":["N."],"suffixes":[]},{"propositions":[],"lastnames":["Steyer"],"firstnames":["P."],"suffixes":[]},{"propositions":[],"lastnames":["Duret-Thual"],"firstnames":["C."],"suffixes":[]},{"propositions":[],"lastnames":["Perez"],"firstnames":["M."],"suffixes":[]},{"propositions":[],"lastnames":["Douillard"],"firstnames":["T."],"suffixes":[]},{"propositions":[],"lastnames":["Rauch"],"firstnames":["E."],"suffixes":[]},{"propositions":[],"lastnames":["Véron"],"firstnames":["M."],"suffixes":[]},{"propositions":[],"lastnames":["Renou"],"firstnames":["G."],"suffixes":[]},{"propositions":[],"lastnames":["Dupoiron"],"firstnames":["F."],"suffixes":[]},{"propositions":[],"lastnames":["Augustin"],"firstnames":["C."],"suffixes":[]},{"propositions":[],"lastnames":["Cazottes"],"firstnames":["S."],"suffixes":[]}],"month":"March","year":"2020","keywords":"Advanced material characterization, Ageing, G-phase, HP-Nb alloy, Microstructure, NbC","pages":"100593","bibtex":"@article{vache_microstructural_2020,\n\ttitle = {Microstructural study of the {NbC} to {G}-phase transformation in {HP}-{Nb} alloys},\n\tvolume = {9},\n\tissn = {2589-1529},\n\turl = {http://www.sciencedirect.com/science/article/pii/S2589152920300107},\n\tdoi = {10.1016/j.mtla.2020.100593},\n\tabstract = {The microstructure of a centrifugally cast HP alloy was studied in its as-received state and after ageing at 900 °C. A multi-scale approach combining X Ray Diffraction (XRD), advanced electron microscopy modes (scanning and transmission electron microscopies (SEM, TEM), together with focused ion beam/SEM nanotomography (FIB-nt)) has been carried out to characterize the evolution of niobium carbides during ageing. After thermal treatment, the carbides exhibit a complex microstructure, consisting of a core of untransformed NbC, an intermediate layer of G-phase (Ni16Nb6Si7) with embedded nanometric titanium carbide precipitates, and an outer shell of alternating chromium carbides Cr23C6 and G-phase. A simple diffusion model was used to explain the faster external growth of G-phase compared to the internal NbC dissolution, and to determine a diffusion coefficient of niobium in the G-phase at 900 °C.},\n\tlanguage = {en},\n\turldate = {2020-02-05},\n\tjournal = {Materialia},\n\tauthor = {Vaché, N. and Steyer, P. and Duret-Thual, C. and Perez, M. and Douillard, T. and Rauch, E. and Véron, M. and Renou, G. and Dupoiron, F. and Augustin, C. and Cazottes, S.},\n\tmonth = mar,\n\tyear = {2020},\n\tkeywords = {Advanced material characterization, Ageing, G-phase, HP-Nb alloy, Microstructure, NbC},\n\tpages = {100593}\n}\n\n","author_short":["Vaché, N.","Steyer, P.","Duret-Thual, C.","Perez, M.","Douillard, T.","Rauch, E.","Véron, M.","Renou, G.","Dupoiron, F.","Augustin, C.","Cazottes, S."],"key":"vache_microstructural_2020","id":"vache_microstructural_2020","bibbaseid":"vach-steyer-duretthual-perez-douillard-rauch-vron-renou-etal-microstructuralstudyofthenbctogphasetransformationinhpnballoys-2020","role":"author","urls":{"Paper":"http://www.sciencedirect.com/science/article/pii/S2589152920300107"},"keyword":["Advanced material characterization","Ageing","G-phase","HP-Nb alloy","Microstructure","NbC"],"downloads":0},"bibtype":"article","biburl":"https://api.zotero.org/users/546948/collections/E6J5KJRQ/items?key=iJYulmmuRwdZke44Zwcq0sro&format=bibtex&limit=100","creationDate":"2020-02-10T16:41:18.523Z","downloads":0,"keywords":["advanced material characterization","ageing","g-phase","hp-nb alloy","microstructure","nbc"],"search_terms":["microstructural","study","nbc","phase","transformation","alloys","vaché","steyer","duret-thual","perez","douillard","rauch","véron","renou","dupoiron","augustin","cazottes"],"title":"Microstructural study of the NbC to G-phase transformation in HP-Nb alloys","year":2020,"dataSources":["knEsaeycDg7kg5d8o"]}