Creep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®80

The mechanism governing de-oxidation of vanadium metal is regarded as fundamental knowledge; however, it has not been elucidated in existing literature. In this paper, the thermodynamic data of V-H-O systems were summarized, and the Gibbs free energies of the main compounds were calculated. Conseque...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Barjesteh M.M., Abbasi S.M., Zangeneh-Madar K., Shirvani K.
Formato:	article
Lenguaje:	EN
Publicado:	Technical Faculty, Bor 2021
Materias:	rene®80 platinum-aluminide creep rupture larson-miller parameter fractography Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/5a5aa6cfceb44663baef78ad7d5cd100
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5a5aa6cfceb44663baef78ad7d5cd100
record_format	dspace
spelling	oai:doaj.org-article:5a5aa6cfceb44663baef78ad7d5cd1002021-11-22T11:04:01ZCreep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®801450-53392217-717510.2298/JMMB201203036Bhttps://doaj.org/article/5a5aa6cfceb44663baef78ad7d5cd1002021-01-01T00:00:00Zhttp://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100036B.pdfhttps://doaj.org/toc/1450-5339https://doaj.org/toc/2217-7175The mechanism governing de-oxidation of vanadium metal is regarded as fundamental knowledge; however, it has not been elucidated in existing literature. In this paper, the thermodynamic data of V-H-O systems were summarized, and the Gibbs free energies of the main compounds were calculated. Consequently, the de-oxidation limits of different reductants in a VO system were evaluated, namely: Si, Al, and Mg. It was observed that Si could not remove an O content of less than 7.27 wt% from V. However, Al was the stronger reducing agent; it could remove O contents of up to 0.01 and 0.1 wt% at 800 and 1050°C, respectively. Nevertheless, Mg exhibited the best reducing properties as it could remove less than 0.01 wt% of O at 1100°C. The addition of H2 rendered the V-O solid solution unstable to a certain extent, thereby indicating that H2 facilitated de-oxygenation. Furthermore, the results obtained by analyzing the equilibrium conditions were in accordance with the results of the de-oxidation limit in the V-O system. In other words, this study demonstrated that oxygen in vanadium can be effectively controlled by changing the reductant dosage and temperature.Barjesteh M.M.Abbasi S.M.Zangeneh-Madar K.Shirvani K.Technical Faculty, Borarticlerene®80platinum-aluminidecreep rupturelarson-miller parameterfractographyMining engineering. MetallurgyTN1-997ENJournal of Mining and Metallurgy. Section B: Metallurgy, Vol 57, Iss 3, Pp 401-412 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rene®80 platinum-aluminide creep rupture larson-miller parameter fractography Mining engineering. Metallurgy TN1-997
spellingShingle	rene®80 platinum-aluminide creep rupture larson-miller parameter fractography Mining engineering. Metallurgy TN1-997 Barjesteh M.M. Abbasi S.M. Zangeneh-Madar K. Shirvani K. Creep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®80
description	The mechanism governing de-oxidation of vanadium metal is regarded as fundamental knowledge; however, it has not been elucidated in existing literature. In this paper, the thermodynamic data of V-H-O systems were summarized, and the Gibbs free energies of the main compounds were calculated. Consequently, the de-oxidation limits of different reductants in a VO system were evaluated, namely: Si, Al, and Mg. It was observed that Si could not remove an O content of less than 7.27 wt% from V. However, Al was the stronger reducing agent; it could remove O contents of up to 0.01 and 0.1 wt% at 800 and 1050°C, respectively. Nevertheless, Mg exhibited the best reducing properties as it could remove less than 0.01 wt% of O at 1100°C. The addition of H2 rendered the V-O solid solution unstable to a certain extent, thereby indicating that H2 facilitated de-oxygenation. Furthermore, the results obtained by analyzing the equilibrium conditions were in accordance with the results of the de-oxidation limit in the V-O system. In other words, this study demonstrated that oxygen in vanadium can be effectively controlled by changing the reductant dosage and temperature.
format	article
author	Barjesteh M.M. Abbasi S.M. Zangeneh-Madar K. Shirvani K.
author_facet	Barjesteh M.M. Abbasi S.M. Zangeneh-Madar K. Shirvani K.
author_sort	Barjesteh M.M.
title	Creep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®80
title_short	Creep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®80
title_full	Creep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®80
title_fullStr	Creep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®80
title_full_unstemmed	Creep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®80
title_sort	creep rupture properties of bare and coated polycrystalline nickel-based superalloy rene®80
publisher	Technical Faculty, Bor
publishDate	2021
url	https://doaj.org/article/5a5aa6cfceb44663baef78ad7d5cd100
work_keys_str_mv	AT barjestehmm creeprupturepropertiesofbareandcoatedpolycrystallinenickelbasedsuperalloyrene80 AT abbasism creeprupturepropertiesofbareandcoatedpolycrystallinenickelbasedsuperalloyrene80 AT zangenehmadark creeprupturepropertiesofbareandcoatedpolycrystallinenickelbasedsuperalloyrene80 AT shirvanik creeprupturepropertiesofbareandcoatedpolycrystallinenickelbasedsuperalloyrene80
_version_	1718417734191022080

Creep rupture properties of bare and coated polycrystalline nickel-based superalloy Rene®80

Ejemplares similares