Effect of hydrogen and cooling rate on the mechanical and corrosion properties of SAF 2507 duplex stainless steel welds

Kordatos, JD; Fourlaris, G; Papadimitriou, G

dc.contributor.author	Kordatos, JD	en
dc.contributor.author	Fourlaris, G	en
dc.contributor.author	Papadimitriou, G	en
dc.date.accessioned	2014-03-01T01:15:18Z
dc.date.available	2014-03-01T01:15:18Z
dc.date.issued	1999	en
dc.identifier.issn	0255-5476	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13422
dc.subject	duplex stainless steels	en
dc.subject	microstructure	en
dc.subject	hydrogen	en
dc.subject	pitting	en
dc.subject	intergranular corrosion	en
dc.subject	charpy test	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Austenite	en
dc.subject.other	Composition effects	en
dc.subject.other	Cooling	en
dc.subject.other	Ferrite	en
dc.subject.other	Gas welding	en
dc.subject.other	Hydrogen embrittlement	en
dc.subject.other	Impact testing	en
dc.subject.other	Metallographic microstructure	en
dc.subject.other	Pitting	en
dc.subject.other	Stainless steel	en
dc.subject.other	Steel corrosion	en
dc.subject.other	Volume fraction	en
dc.subject.other	Charpy impact tests	en
dc.subject.other	Superduplex stainless steel	en
dc.subject.other	Tungsten inert gas (TIG) welding	en
dc.subject.other	Welds	en
dc.title	Effect of hydrogen and cooling rate on the mechanical and corrosion properties of SAF 2507 duplex stainless steel welds	en
heal.type	journalArticle	en
heal.identifier.primary	10.4028/www.scientific.net/MSF.318-320.615	en
heal.identifier.secondary	http://dx.doi.org/10.4028/www.scientific.net/MSF.318-320.615	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	Since the microstructure of super duplex stainless steels consists of approximately equal amounts of austenite and ferrite, the response of these two constituent phases to hydrogen is of significant importance for potential applications. A study has been carried out of hydrogen additions in argon shielding gas welding of a super duplex stainless steel (SAF 2507) employing the use of TIG welding process. The percentage of hydrogen in the argon shielding gas was set to 10% and welds were carried out in both hydrogen enriched as well as pure argon shielding gases. Moreover, weldments were performed at a variety of cooling rates. Extensive metallographic observations of weldments were carried out employing the use of an image analysis system and a calculation of the volume fraction of phases across weld zones has been performed. The pitting corrosion of welds in chloride solutions, as well as the intergranular corrosion were studied and observed using a SEM microscope fitted with an EDS-X-ray Microanalysis system. The embrittlement of welds was also investigated employing the use of impact testing at various temperatures.	en
heal.publisher	Trans Tech Publ, Uetikon-Zuerich, Switzerland	en
heal.journalName	Materials Science Forum	en
heal.bookName	MATERIALS SCIENCE FORUM	en
dc.identifier.doi	10.4028/www.scientific.net/MSF.318-320.615	en
dc.identifier.isi	ISI:000088746300084	en
dc.identifier.volume	318	en
dc.identifier.spage	615	en
dc.identifier.epage	620	en