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Metals 2017, 7(3), 82; doi:10.3390/met7030082

Assessment of the Residual Life of Steam Pipeline Material beyond the Computational Working Time

1
Division of Material Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland
2
Institute for Ferrous Metallurgy, K. Miarki 12-14, 44-100 Gliwice, Poland
3
Energopomiar, J. Sowińskiego 3, 44-100 Gliwice, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Robert Tuttle
Received: 19 December 2016 / Revised: 23 February 2017 / Accepted: 28 February 2017 / Published: 6 March 2017
(This article belongs to the Special Issue Alloy Steels)
View Full-Text   |   Download PDF [5587 KB, uploaded 6 March 2017]   |  

Abstract

This paper presents the evaluation of durability for the material of repair welded joints made from (13HMF) 14MoV6-3 steel after long-term service, and from material in the as-received condition and after long-term service. Microstructure examinations using a scanning electron microscope, hardness measurements and creep tests of the basic material and welded joints of these steels were carried out. These tests enabled the time of further safe service of the examined repair welded joints to be determined in relation to the residual life of the materials. The evaluation of residual life and disposable life, and thus the estimation and determination of the time of safe service, is of great importance for the operation of components beyond the design service life. The obtained test results are part of the materials’ characteristics developed by the Institute for Ferrous Metallurgy for steels and welded joints made from these steels to work under creep conditions. View Full-Text
Keywords: creep; degradation; welded joint; Cr-Mo-V steel; residual life creep; degradation; welded joint; Cr-Mo-V steel; residual life
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sroka, M.; Zieliński, A.; Dziuba-Kałuża, M.; Kremzer, M.; Macek, M.; Jasiński, A. Assessment of the Residual Life of Steam Pipeline Material beyond the Computational Working Time. Metals 2017, 7, 82.

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