Effect of nitrogen and nickel on the microstructure and mechanical properties of plasma welded UNS S32760 super-duplex stainless steels

Migiakis, K; Papadimitriou, GD

dc.contributor.author	Migiakis, K	en
dc.contributor.author	Papadimitriou, GD	en
dc.date.accessioned	2014-03-01T01:30:16Z
dc.date.available	2014-03-01T01:30:16Z
dc.date.issued	2009	en
dc.identifier.issn	0022-2461	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19525
dc.subject	Cooling Rate	en
dc.subject	Corrosion Resistance	en
dc.subject	Mechanical Property	en
dc.subject	Microstructures	en
dc.subject	Nickel	en
dc.subject	Nitrogen	en
dc.subject	Tensile Strength	en
dc.subject	Duplex Stainless Steel	en
dc.subject	Plasma Transferred Arc	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Austenite phase	en
dc.subject.other	Composition control	en
dc.subject.other	Duplex stainless steel	en
dc.subject.other	Microstructure and mechanical properties	en
dc.subject.other	Nitrogen additions	en
dc.subject.other	Plasma operations	en
dc.subject.other	Plasma transferred arc	en
dc.subject.other	Positive effects	en
dc.subject.other	Protective gas	en
dc.subject.other	Rapid cooling	en
dc.subject.other	Welding parameters	en
dc.subject.other	Weldments	en
dc.subject.other	Cooling	en
dc.subject.other	Corrosion resistance	en
dc.subject.other	Filler metals	en
dc.subject.other	Fillers	en
dc.subject.other	Hard facing	en
dc.subject.other	Microstructure	en
dc.subject.other	Nickel	en
dc.subject.other	Nickel alloys	en
dc.subject.other	Nitrogen	en
dc.subject.other	Plasma diagnostics	en
dc.subject.other	Plasma welding	en
dc.subject.other	Plasmas	en
dc.subject.other	Tensile strength	en
dc.subject.other	Welding	en
dc.subject.other	Mechanical properties	en
dc.title	Effect of nitrogen and nickel on the microstructure and mechanical properties of plasma welded UNS S32760 super-duplex stainless steels	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10853-009-3878-9	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10853-009-3878-9	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	Super-duplex stainless steels present excellent combination of mechanical and corrosion resistance, due to their strict composition control and ferrite-austenite phase balance. This balance may, however, be disturbed during welding in both the fusion and HAZ due to the rapid cooling rates and may lead to loss of the good corrosion and mechanical properties of the weldments. The present investigation is studying the effect of nitrogen addition in the plasma operation gases and of the increase of nickel in the filler metal, on the microstructure and on the mechanical properties of super-duplex stainless steels welded by the plasma transferred arc (PTA) technique. Results have shown that nitrogen addition in the plasma operation gas affects the mechanical properties of the weldments. It is shown that nitrogen addition in the plasma and protective gas and higher nickel content in the filler metal have both a positive effect on the elongation of the welded specimens and after optimization of the welding parameters very good results may be obtained in terms of tensile strength. © 2009 Springer Science+Business Media, LLC.	en
heal.publisher	SPRINGER	en
heal.journalName	Journal of Materials Science	en
dc.identifier.doi	10.1007/s10853-009-3878-9	en
dc.identifier.isi	ISI:000270385100020	en
dc.identifier.volume	44	en
dc.identifier.issue	23	en
dc.identifier.spage	6372	en
dc.identifier.epage	6383	en