Studies on the Oxidation Behavior and Microstructural Evolution of Two Nb-Modified HR3C Austenitic Steels under Pure Water Vapor at 650 °C

The steam oxidation behavior of three heterogeneous HR3C alloys was investigated at 650 °C comparatively. After a long-term oxidation process for 1000 h, the results demonstrated that the commercial HR3C alloy already exhibited a high oxidation resistance. However, the spallation resistance of the o...

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Autores principales: Wang, Jinlong, Meng, Bo, Lu, Jintao, Zhou, Yongli, Yang, Dongxu, Wang, Qunchang, Chen, Minghui, Wang, Fuhui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7730653/
https://www.ncbi.nlm.nih.gov/pubmed/33260482
http://dx.doi.org/10.3390/ma13235447
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author Wang, Jinlong
Meng, Bo
Lu, Jintao
Zhou, Yongli
Yang, Dongxu
Wang, Qunchang
Chen, Minghui
Wang, Fuhui
author_facet Wang, Jinlong
Meng, Bo
Lu, Jintao
Zhou, Yongli
Yang, Dongxu
Wang, Qunchang
Chen, Minghui
Wang, Fuhui
author_sort Wang, Jinlong
collection PubMed
description The steam oxidation behavior of three heterogeneous HR3C alloys was investigated at 650 °C comparatively. After a long-term oxidation process for 1000 h, the results demonstrated that the commercial HR3C alloy already exhibited a high oxidation resistance. However, the spallation resistance of the oxide scale was low during the initial oxidation period. The addition of a moderate amount of Nb into the alloy (1#HR3C) increased the oxidation resistance of the alloy. In addition, the improvement of the microstructural stability was substantially influenced by solid solution strengthening and fine grain strengthening. However, the addition of excessive Nb could significantly affect the growth model of the oxide scale and negatively affect the oxidation performance and microstructural evolution of the alloy (2#HR3C).
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spelling pubmed-77306532020-12-12 Studies on the Oxidation Behavior and Microstructural Evolution of Two Nb-Modified HR3C Austenitic Steels under Pure Water Vapor at 650 °C Wang, Jinlong Meng, Bo Lu, Jintao Zhou, Yongli Yang, Dongxu Wang, Qunchang Chen, Minghui Wang, Fuhui Materials (Basel) Article The steam oxidation behavior of three heterogeneous HR3C alloys was investigated at 650 °C comparatively. After a long-term oxidation process for 1000 h, the results demonstrated that the commercial HR3C alloy already exhibited a high oxidation resistance. However, the spallation resistance of the oxide scale was low during the initial oxidation period. The addition of a moderate amount of Nb into the alloy (1#HR3C) increased the oxidation resistance of the alloy. In addition, the improvement of the microstructural stability was substantially influenced by solid solution strengthening and fine grain strengthening. However, the addition of excessive Nb could significantly affect the growth model of the oxide scale and negatively affect the oxidation performance and microstructural evolution of the alloy (2#HR3C). MDPI 2020-11-29 /pmc/articles/PMC7730653/ /pubmed/33260482 http://dx.doi.org/10.3390/ma13235447 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
Wang, Jinlong
Meng, Bo
Lu, Jintao
Zhou, Yongli
Yang, Dongxu
Wang, Qunchang
Chen, Minghui
Wang, Fuhui
Studies on the Oxidation Behavior and Microstructural Evolution of Two Nb-Modified HR3C Austenitic Steels under Pure Water Vapor at 650 °C
title Studies on the Oxidation Behavior and Microstructural Evolution of Two Nb-Modified HR3C Austenitic Steels under Pure Water Vapor at 650 °C
title_full Studies on the Oxidation Behavior and Microstructural Evolution of Two Nb-Modified HR3C Austenitic Steels under Pure Water Vapor at 650 °C
title_fullStr Studies on the Oxidation Behavior and Microstructural Evolution of Two Nb-Modified HR3C Austenitic Steels under Pure Water Vapor at 650 °C
title_full_unstemmed Studies on the Oxidation Behavior and Microstructural Evolution of Two Nb-Modified HR3C Austenitic Steels under Pure Water Vapor at 650 °C
title_short Studies on the Oxidation Behavior and Microstructural Evolution of Two Nb-Modified HR3C Austenitic Steels under Pure Water Vapor at 650 °C
title_sort studies on the oxidation behavior and microstructural evolution of two nb-modified hr3c austenitic steels under pure water vapor at 650 °c
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7730653/
https://www.ncbi.nlm.nih.gov/pubmed/33260482
http://dx.doi.org/10.3390/ma13235447
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