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A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar)

Mark Evans Orcid Logo

Journal of Materials Science, Volume: 44, Issue: 21, Pages: 5842 - 5851

Swansea University Author: Mark Evans Orcid Logo

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DOI (Published version): 10.1007/s10853-009-3824-x

Abstract

Designers of new power-generation plants are looking to make use of new and existing high-strength austenitic steels so that these plants can operate with much higher steam and therefore metal temperatures. However, this article shows that the recently developed Wilshire–Scharning methodology is inc...

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Published in: Journal of Materials Science
ISSN: 0022-2461
Published: 2009
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URI: https://cronfa.swan.ac.uk/Record/cronfa5458
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spelling 2016-07-19T12:16:55.7661058 v2 5458 2013-09-03 A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar) 7720f04c308cf7a1c32312058780d20c 0000-0003-2056-2396 Mark Evans Mark Evans true false 2013-09-03 MTLS Designers of new power-generation plants are looking to make use of new and existing high-strength austenitic steels so that these plants can operate with much higher steam and therefore metal temperatures. However, this article shows that the recently developed Wilshire–Scharning methodology is incapable of producing accurate long-term life predictions of these materials from short-term data. This article puts forward a modification of this approach that should enable existing and newly developed austenitic stainless steels to be brought into safe operation more cost effectively and over a quicker time span. Estimation of this model showed that the activation energy for creep was dependent on whether the test stress was above or below the yield stress. Analysis of the results from tests lasting only up to 5,000 h accurately predict the creep lives for stress–temperature conditions causing failure in 100,000 h or more. Journal Article Journal of Materials Science 44 21 5842 5851 0022-2461 31 12 2009 2009-12-31 10.1007/s10853-009-3824-x Current Impact Factor = 1.9. Five Year Impact Factor = 1.7. Designers of new power generation plants are looking to make use existing austenitic steels so that these plants can operate with much higher steam and therefore metal temperatures. This is an important paper because it shows for the first time, that the new Wilshire methodology, once modified in the ways outlined in the paper, is capable of estimating the minimum stresses causing rupture in 100, 000 h from generated rupture data out to about only 5,000 h. This paper can be seen as part of the verification process needed before austenitic stainless steels can be bought into safe operation more cost effectively and over a quicker time scale than is currently possible COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2016-07-19T12:16:55.7661058 2013-09-03T06:06:16.0000000 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Mark Evans 0000-0003-2056-2396 1
title A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar)
spellingShingle A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar)
Mark Evans
title_short A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar)
title_full A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar)
title_fullStr A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar)
title_full_unstemmed A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar)
title_sort A novel approach to the prediction of long-term creep fracture: with application to 18Cr–12Ni–Mo steel (plate and bar)
author_id_str_mv 7720f04c308cf7a1c32312058780d20c
author_id_fullname_str_mv 7720f04c308cf7a1c32312058780d20c_***_Mark Evans
author Mark Evans
author2 Mark Evans
format Journal article
container_title Journal of Materials Science
container_volume 44
container_issue 21
container_start_page 5842
publishDate 2009
institution Swansea University
issn 0022-2461
doi_str_mv 10.1007/s10853-009-3824-x
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 0
active_str 0
description Designers of new power-generation plants are looking to make use of new and existing high-strength austenitic steels so that these plants can operate with much higher steam and therefore metal temperatures. However, this article shows that the recently developed Wilshire–Scharning methodology is incapable of producing accurate long-term life predictions of these materials from short-term data. This article puts forward a modification of this approach that should enable existing and newly developed austenitic stainless steels to be brought into safe operation more cost effectively and over a quicker time span. Estimation of this model showed that the activation energy for creep was dependent on whether the test stress was above or below the yield stress. Analysis of the results from tests lasting only up to 5,000 h accurately predict the creep lives for stress–temperature conditions causing failure in 100,000 h or more.
published_date 2009-12-31T03:06:34Z
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score 11.013575

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