Title: Creep behaviour of steel P23 weldments

Authors: Tomas Vlasak, Jan Hakl, Peter Brziak, Peter Bernasovsky, Jozef Pecha

Addresses: SVUM a.s. Research Centre Bechovice, Podnikatelska 565, 190 11 Prague, Czech Republic. ' SVUM a.s. Research Centre Bechovice, Podnikatelska 565, 190 11 Prague, Czech Republic. ' VUZ-PI SR, Racianska 71, 832 59 Bratislava, Slovakia. ' VUZ-PI SR, Racianska 71, 832 59 Bratislava, Slovakia. ' SES a.s., Tovarenska 310, 935 28 Tlmace, Slovakia

Abstract: Low-alloy creep resistant steel P23 (2.25%Cr-1.6%W-0.25%V) has been developed for pipelines in power engineering. Creep resistance of this steel was already evaluated. Continuation of this work is the investigation of possibilities of weldment production. This paper reports some of this possibilities and mentioned further are the creep strength and metallographic evaluation of the optimally prepared weldments P23 – P23.

Keywords: creep strength; weldments; pipelines; low alloy steel; weld strength factor; creep resistant steels; power engineering; metallography.

DOI: 10.1504/IJMMP.2011.040439

International Journal of Microstructure and Materials Properties, 2011 Vol.6 No.1/2, pp.91 - 104

Published online: 27 May 2011 *

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