Predicting ferrite fractions in single pass super duplex stainless steel welds: thermal cycle analysis and phase transformation modeling

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Fältnamn	Indikatorer	Metadata
000		03971naa a2200373 4500
001		oai:DiVA.org:hv-15015
003		SwePub
008		200224s2019 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-150152 URI
040		a (SwePub)hv
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a kon2 swepub-publicationtype
100	1	a Hosseini, Vahid,d 1987-u Högskolan Väst,Avdelningen för svetsteknologi (SV),PTW4 aut0 (Swepub:hv)vahhos
245	1 0	a Predicting ferrite fractions in single pass super duplex stainless steel welds :b thermal cycle analysis and phase transformation modeling
264	1	a Wien :b Austrian Society for Metallurgy and Materials (ASMET),c 2019
338		a print2 rdacarrier
520		a The relationship between welding process parameters, welding thermal cycle, and the final microstructure is of great importance for reliable fabrication of welded super duplex stainless steels (SDSS) structures. The present study was primarily aimed at investigating the relationship for root/single pass welding of type 2507 SDSS. Fourteen welds were produced using GMAW, GTAW, SAW, and SMAW with different joints geometries, plate thicknesses, and welding parameters. Thermal cycles were recorded using several thermocouples attached to the plates and thermocouples were also harpooned into the weld pool. Weld pool geometries and base metal dilution in the weld metal were determined for all welds. The general trend was that the ferrite fraction of the weld zone increased with increasing cooling rate and base metal dilution in the weld metal. The ferrite fraction was in the range 49-64% for all welds. Kinetics of austenite formation was modeled using computational thermodynamics (Thermo-Calc & DICTRA) to predict the ferrite fractions in the weld zone and calculated fractions were in good agreement with experimental results. Some conflicting results showed that in addition to dilution and cooling rate, the possible nitrogen loss must be taken into account when evaluating and predicting ferrite fraction. It was concluded that the above approach can be used for prediction of the ferrite fraction of super duplex stainless steel single pass welds. Â 2019 ESSC and DUPLEX 2019 - 10th European Stainless Steel Conference - Science and Market, 6th European Duplex Stainless Steel Conference and Exhibition. All rights reserved.
650	7	a TEKNIK OCH TEKNOLOGIERx Materialteknikx Bearbetnings-, yt- och fogningsteknik0 (SwePub)205052 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Materials Engineeringx Manufacturing, Surface and Joining Technology0 (SwePub)205052 hsv//eng
653		a Commerce; Cooling; Electric arc welding; Electric welding; Ferrite; Forecasting; Metals; Nickel steel; Phase transitions; Plates (structural components); Thermal cycling; Thermocouples; Welds
653		a Computational thermodynamics; Dictra; Ferrite fraction; Kinetics of austenite formation; Simulation; Super duplex stainless steel; Welding process parameters; Welding thermal cycles
653		a Duplex stainless steel
653		a Production Technology
653		a Produktionsteknik
653		a Manufacturing and materials engineering
653		a Produktions- och materialteknik
700	1	a Wessman, Sten,d 1967-u Högskolan Väst,Avdelningen för svetsteknologi (SV),PTW4 aut0 (Swepub:hv)stwa0002
700	1	a Hurtig, Kjell,d 1960-u Högskolan Väst,Avdelningen för svetsteknologi (SV),PTW4 aut0 (Swepub:hv)tkh
700	1	a Karlsson, Leif,d 1956-u Högskolan Väst,Forskningsmiljön produktionsteknik(PTW),Avdelningen för svetsteknologi (SV),PTW4 aut0 (Swepub:hv)leikar
710	2	a Högskolan Västb Avdelningen för svetsteknologi (SV)4 org
773	0	t ESSC and DUPLEX 2019d Wien : Austrian Society for Metallurgy and Materials (ASMET)g , s. 180-197q <180-197
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-15015

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Av författaren/redakt...: Hosseini, Vahid, ...; Wessman, Sten, 1 ...; Hurtig, Kjell, 1 ...; Karlsson, Leif, ...

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