Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C

The coarse-grained new-generation Fe-Al-Y(2)O(3)-based oxide dispersion strengthened (ODS) alloys contain 5 vol.% homogeneously dispersed yttria nano-precipitates and exhibit very promising creep and oxidation resistance above 1000 °C. The alloy is prepared by the consolidation of mechanically alloy...

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Autores principales: Svoboda, Jiří, Luptáková, Natália, Jarý, Milan, Dymáček, Petr
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7696533/
https://www.ncbi.nlm.nih.gov/pubmed/33182818
http://dx.doi.org/10.3390/ma13225070
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author Svoboda, Jiří
Luptáková, Natália
Jarý, Milan
Dymáček, Petr
author_facet Svoboda, Jiří
Luptáková, Natália
Jarý, Milan
Dymáček, Petr
author_sort Svoboda, Jiří
collection PubMed
description The coarse-grained new-generation Fe-Al-Y(2)O(3)-based oxide dispersion strengthened (ODS) alloys contain 5 vol.% homogeneously dispersed yttria nano-precipitates and exhibit very promising creep and oxidation resistance above 1000 °C. The alloy is prepared by the consolidation of mechanically alloyed powders via hot rolling followed by secondary recrystallization. The paper presents a systematic study of influence of rolling temperature on final microstructure and creep at 1100 °C for two grades (Fe-10Al-4Y(2)O(3) and Fe-9Al-14Cr-4Y(2)O(3) in wt%) of new-generation ODS alloys. The hot rolling temperatures exhibit a rather wide processing window and the influence of Cr-alloying on creep properties is evaluated as only slightly positive.
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spelling pubmed-76965332020-11-29 Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C Svoboda, Jiří Luptáková, Natália Jarý, Milan Dymáček, Petr Materials (Basel) Article The coarse-grained new-generation Fe-Al-Y(2)O(3)-based oxide dispersion strengthened (ODS) alloys contain 5 vol.% homogeneously dispersed yttria nano-precipitates and exhibit very promising creep and oxidation resistance above 1000 °C. The alloy is prepared by the consolidation of mechanically alloyed powders via hot rolling followed by secondary recrystallization. The paper presents a systematic study of influence of rolling temperature on final microstructure and creep at 1100 °C for two grades (Fe-10Al-4Y(2)O(3) and Fe-9Al-14Cr-4Y(2)O(3) in wt%) of new-generation ODS alloys. The hot rolling temperatures exhibit a rather wide processing window and the influence of Cr-alloying on creep properties is evaluated as only slightly positive. MDPI 2020-11-10 /pmc/articles/PMC7696533/ /pubmed/33182818 http://dx.doi.org/10.3390/ma13225070 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Svoboda, Jiří
Luptáková, Natália
Jarý, Milan
Dymáček, Petr
Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C
title Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C
title_full Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C
title_fullStr Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C
title_full_unstemmed Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C
title_short Influence of Hot Consolidation Conditions and Cr-Alloying on Microstructure and Creep in New-Generation ODS Alloy at 1100 °C
title_sort influence of hot consolidation conditions and cr-alloying on microstructure and creep in new-generation ods alloy at 1100 °c
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7696533/
https://www.ncbi.nlm.nih.gov/pubmed/33182818
http://dx.doi.org/10.3390/ma13225070
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