The service life of the repair welded joint of Cr-Mo / Cr-Mo-Y

• Autorzy: Sroka M. , Zieliński A. , Mikuła J.

Identyfikatory

DOI

10.1515/amm-2016-0217

• Języki publikacji: EN

Abstrakty

EN

The service life of the repair welded joint of Cr-Mo / Cr-Mo-Y This paper presents the evaluation of the service life of dissimilar repair welded joint from Cr-Mo/Cr-Mo-V steel after 200,000 h service under creep condition. The investigations of microstructure using scanning electron microscopy, investigations of mechanical properties at room and elevated temperature as well as creep tests of the basic material from Cr-Mo and Cr-Mo-V steel and welded joint from these steels were carried out. The investigations allowed the tune of further safe operation of the repair welded joint in relation to the residual life of the materials to be determined. The evaluation of residual life and disposable residual life, and thus the estimation or determination of possible time of further safe operation, is crucial when the elements are operated much beyond the design work time.

Słowa kluczowe

EN

creep; welded joint; Cr-Mo; Cr-M-V steel; residual life

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2016
• Tom: Vol. 61, iss. 3
• Strony: 1315--1320
• Opis fizyczny: Bibliogr. 28 poz., rys., tab., wykr.

Twórcy

autor

Sroka M.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, 18A Konarsktego Str., Gliwice 44-100, Poland

autor

Zieliński A.

• Institute for Ferrous Metallurgy, 12-14 K. Miarki Str., 44-100 Gliwice, Poland

autor

Mikuła J.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, 18A Konarsktego Str., Gliwice 44-100, Poland

Bibliografia

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Uwagi

EN

The results in this publication were obtained as a part of research co-financed by the National Centre for Research and Development under contract PBS3/B5/42/2015 - Project: „Methodology, evaluation and forecast of operation beyond the analytical operating time of welded joints of pressure components of power boilers". This publication was co-financed by the Ministry of Science and Higher Education of Poland as the statutory financial grant of the Faculty of Mechanical Engineering SUT