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Title: | Providing resistance to sulfide stress corrosion cracking of pipelines welded joints by selection of welding parameters |
Authors: | Khudyakov, A. Danilkin, P. |
Issue Date: | 2019 |
Publisher: | EDP Sciences |
Citation: | Khudyakov, A. Providing resistance to sulfide stress corrosion cracking of pipelines welded joints by selection of welding parameters / A. Khudyakov, P. Danilkin. — DOI 10.1051/e3sconf/201912104005 // E3S Web of Conferences. — 2019. — Iss. 121. — 4005. |
Abstract: | Sulfide stress cracking (SSC) is one of the most dangerous types of pipelines destruction. Thermal impact of the welding process drives to heterogeneity of the microstructure and properties of the metal, which can lead to cracking of pipeline welded joints. Resistance to SSC of welded joints is determined by the thermal cycle of welding and cooling rate in the temperature range of austenite transformation. Due to performed studies based on simulation of welding heating the recommended range of cooling rates of 10-30 ° C/s was established, in which the resistance to SSC of welded joints is ensured. To calculate the cooling rates in coarse grained heat affected zone (CGHAZ) finite-element models of heat distribution were developed for longitudinal multi-electrode submerged arc welding (SAW) and multi-pass girth welding of pipes. Using the developed welding models, it was found that in order to achieve the cooling rate in CGHAZ it is necessary to reduce heat input up to 15-30% during multi-electrode SAW process of longitudinal welds of pipes. For multi-pass girth welding it is necessary to preheat the edges to be welded up to 100-300 °C depending on type of welding (GMAW or SMAW) and pipe wall thickness. © The Authors, published by EDP Sciences, 2019. |
Keywords: | CARBON DIOXIDE ARC WELDING COOLING CORROSION RESISTANCE GAS INDUSTRY HEAT AFFECTED ZONE PIPELINE CORROSION PIPELINES STEEL PIPE STRESS CORROSION CRACKING SUBMERGED ARC WELDING SULFIDE CORROSION CRACKING SULFUR COMPOUNDS WELDING ELECTRODES AUSTENITE TRANSFORMATIONS COARSE GRAINED HEAT AFFECTED ZONE LONGITUDINAL WELDS MICROSTRUCTURE AND PROPERTIES PIPE WALL THICKNESS SULFIDE STRESS CORROSION CRACKING SULFIDE STRESS CRACKING WELDING PARAMETERS WELD DECAY |
URI: | http://elar.urfu.ru/handle/10995/90265 |
Access: | info:eu-repo/semantics/openAccess cc-by |
SCOPUS ID: | 85073804836 |
PURE ID: | 11102865 |
ISSN: | 2555-0403 |
DOI: | 10.1051/e3sconf/201912104005 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
Files in This Item:
File | Description | Size | Format | |
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10.1051-e3sconf-201912104005.pdf | 1,17 MB | Adobe PDF | View/Open |
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