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Welding of Large Thickness Super Duplex Stainless Steel: Microstructure and Properties
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0003-3374-6282
Outokumpu Stainless AB, Avesta R&D Center,Avesta (SWE).
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0002-0234-3168
University West, Department of Engineering Science, Research Enviroment Production Technology West. University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0001-8822-2705
2021 (English)In: METALS, E-ISSN 2075-4701, Vol. 11, no 8, article id 1184Article in journal (Refereed) Published
Abstract [en]

In this study, Submerged Arc Welding (SAW) and Gas Metal Arc Welding (GMAW) processes were used in multi-pass welding of 33 mm thickness super duplex stainless steel plates. Recommended and higher than recommended arc energy and interpass temperatures were used. Both GMAW and SAW processes were able to produce large thickness weldments meeting the microstructural, mechanical, and corrosion resistance requirements, and also when using higher than recommended arc energy and interpass temperature. It was possible to reduce the number of welding passes by half when using higher than recommended arc energy and interpass temperature. The SAW process needed only half of the welding time required for the GMAW process to produce a weldment with nearly the same number of weld passes, when using recommended arc energy and interpass temperature. Based on the results of this investigation, the practical recommendations for welding large thicknesses should be revised and updated.

Place, publisher, year, edition, pages
MDPI , 2021. Vol. 11, no 8, article id 1184
Keywords [en]
multi-pass welding; large thickness; super duplex stainless steel; SAW; GMAW; microstructure; properties
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-17447DOI: 10.3390/met11081184ISI: 000689406800001Scopus ID: 2-s2.0-85111059453OAI: oai:DiVA.org:hv-17447DiVA, id: diva2:1603975
Funder
Knowledge Foundation, 20140046Available from: 2021-10-18 Created: 2021-10-18 Last updated: 2022-04-04

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Metals(12917 kB)314 downloads
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Valiente Bermejo, María AsunciónHurtig, KjellKarlsson, Leif

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