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A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes

Mark Evans Orcid Logo

Materials Science and Engineering: A, Volume: 528, Issue: 1, Pages: 500 - 512

Swansea University Author: Mark Evans Orcid Logo

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Abstract

The creep and creep rupture properties of 2.25Cr–1Mo steel tubes have been analysed using the Wilshire equations. The observed behaviour patterns are then discussed in terms of the dislocation processes governing creep strain accumulation. A suitable statistical framework for analysing both the sing...

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Published in: Materials Science and Engineering: A
ISSN: 0921-5093
Published: 2010
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URI: https://cronfa.swan.ac.uk/Record/cronfa5455
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spelling 2016-07-19T12:17:20.3989795 v2 5455 2013-09-03 A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes 7720f04c308cf7a1c32312058780d20c 0000-0003-2056-2396 Mark Evans Mark Evans true false 2013-09-03 MTLS The creep and creep rupture properties of 2.25Cr–1Mo steel tubes have been analysed using the Wilshire equations. The observed behaviour patterns are then discussed in terms of the dislocation processes governing creep strain accumulation. A suitable statistical framework for analysing both the single and multi batch data available on this material is then specified. It is shown that ignoring the hierarchical nature present in many creep data bases, which has been the approach until now when using the Wilshire equations, leads to a serious and significant underestimate of the predicted safe life for this material. The model allows accurate predictions of long-term properties by extrapolation of short-term results for this steel. Journal Article Materials Science and Engineering: A 528 1 500 512 0921-5093 Creep; Fracture; Multi level models; Bainitic Steels 31 12 2010 2010-12-31 10.1016/j.msea.2010.09.032 Current Impact Factor = 2.1. Five Year Impact Factor = 2.3This paper is concerned with a subject of considerable practical importance as the steel, on which the data is analysed and predictions are made, is widely employed in existing power plants. This is a very timely paper as it shows for the first time the extent of confidence that can be placed on predictions of the service life of components made from this material made using the new Wilshire methodology . COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2016-07-19T12:17:20.3989795 2013-09-03T06:06:21.0000000 College of Engineering Engineering Mark Evans 0000-0003-2056-2396 1
title A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes
spellingShingle A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes
Mark Evans
title_short A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes
title_full A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes
title_fullStr A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes
title_full_unstemmed A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes
title_sort A multi-level model for the analysis and prediction of creep and creep fracture of 2.25Cr–1Mo steel tubes
author_id_str_mv 7720f04c308cf7a1c32312058780d20c
author_id_fullname_str_mv 7720f04c308cf7a1c32312058780d20c_***_Mark Evans
author Mark Evans
author2 Mark Evans
format Journal article
container_title Materials Science and Engineering: A
container_volume 528
container_issue 1
container_start_page 500
publishDate 2010
institution Swansea University
issn 0921-5093
doi_str_mv 10.1016/j.msea.2010.09.032
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 0
active_str 0
description The creep and creep rupture properties of 2.25Cr–1Mo steel tubes have been analysed using the Wilshire equations. The observed behaviour patterns are then discussed in terms of the dislocation processes governing creep strain accumulation. A suitable statistical framework for analysing both the single and multi batch data available on this material is then specified. It is shown that ignoring the hierarchical nature present in many creep data bases, which has been the approach until now when using the Wilshire equations, leads to a serious and significant underestimate of the predicted safe life for this material. The model allows accurate predictions of long-term properties by extrapolation of short-term results for this steel.
published_date 2010-12-31T03:15:23Z
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score 10.888804