dc.creator | Sosa Lissarrague, Matías Humberto | |
dc.creator | Limandri, Silvina Paola | |
dc.creator | Prado, Fernando Daniel | |
dc.creator | Picasso, Alberto Carlos | |
dc.date.accessioned | 2019-12-06T15:43:13Z | |
dc.date.accessioned | 2022-10-15T03:01:55Z | |
dc.date.available | 2019-12-06T15:43:13Z | |
dc.date.available | 2022-10-15T03:01:55Z | |
dc.date.created | 2019-12-06T15:43:13Z | |
dc.date.issued | 2018-06 | |
dc.identifier | Sosa Lissarrague, Matías Humberto; Limandri, Silvina Paola; Prado, Fernando Daniel; Picasso, Alberto Carlos; Study of the Microstructural Evolution in a 35Ni-25Cr-Nb Heat-Resistant Alloy by Dilatometry and Electron Microscopy; Springer; Metallography, Microstructure, and Analysis; 7; 3; 6-2018; 356-362 | |
dc.identifier | 2192-9262 | |
dc.identifier | http://hdl.handle.net/11336/91628 | |
dc.identifier | 2192-9270 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4337833 | |
dc.description.abstract | The dendritic-type microstructure of the 35Ni-25Cr-Nb alloy, in the as-cast condition, consists of an austenitic matrix and two types of eutectic primary carbides; Nb-rich MC type and Cr-rich M23C6 type both present in interdendritic edges and grain boundaries. During aging at 1073 K for different times, M23C6-type secondary carbides precipitate in the matrix while MC-type carbides would transform into a Ni-Nb silicide, known as G-phase (Ni16Nb6Si7). The microstructure of this alloy was characterized by scanning electron microscopy with X-ray mapping, backscattered and secondary electron images, electron backscatter diffraction, and dilatometry, in order to detect the G-phase and analyze the conditions under which it is present. This undesirable silicide could reduce creep strength since Nb-rich carbide to G-phase transformation improves nucleation of microcracks in the interface between matrix and the silicide. Silicon and nickel were found on the edges of primary Nb-rich carbides in the as-cast condition. This could be indicating that the transformation of this carbide into Ni-Nb silicide is in an incipient stage and it probably occurs from the outside to the inside of the Nb carbide. | |
dc.language | eng | |
dc.publisher | Springer | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s13632-018-0448-z | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1007/s13632-018-0448-z | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | DILATOMETRY | |
dc.subject | EBSD | |
dc.subject | G-PHASE | |
dc.subject | HEAT-RESISTANT ALLOYS | |
dc.title | Study of the Microstructural Evolution in a 35Ni-25Cr-Nb Heat-Resistant Alloy by Dilatometry and Electron Microscopy | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |