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

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
Institute for Ferrous Metallurgy, K. Miarki 12-14, 44-100 Gliwice, Poland
Energopomiar, J. Sowińskiego 3, 44-100 Gliwice, Poland
Author to whom correspondence should be addressed.
Academic Editor: Robert Tuttle
Metals 2017, 7(3), 82;
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)
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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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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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