Addition of nitrogen and nickel in the fusion zone of plasma transferred arc weld ments in UNS 32760 super duplex stainless steel: Effect on the microstructure and on the pitting corrosion resistance

Migiakis, K; Papadimitriou, GD

dc.contributor.author	Migiakis, K	en
dc.contributor.author	Papadimitriou, GD	en
dc.date.accessioned	2014-03-01T02:51:56Z
dc.date.available	2014-03-01T02:51:56Z
dc.date.issued	2009	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35759
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-70349452129&partnerID=40&md5=1e03adc899a04c643d49eb79668f5334	en
dc.subject	Nitrogen addition	en
dc.subject	Pitting corrosion	en
dc.subject	Plasma welding	en
dc.subject	Super duplex stainless steels	en
dc.subject.other	Austenite phase	en
dc.subject.other	Composition control	en
dc.subject.other	Fusion zones	en
dc.subject.other	Nitrogen addition	en
dc.subject.other	Nitrogen additions	en
dc.subject.other	Phase balance	en
dc.subject.other	Pitting corrosion	en
dc.subject.other	Pitting corrosion resistance	en
dc.subject.other	Pitting resistance	en
dc.subject.other	Plasma operations	en
dc.subject.other	Plasma transferred arc	en
dc.subject.other	Positive effects	en
dc.subject.other	Rapid cooling	en
dc.subject.other	Super duplex stainless steel	en
dc.subject.other	Super duplex stainless steels	en
dc.subject.other	Weldments	en
dc.subject.other	Cavity resonators	en
dc.subject.other	Cooling	en
dc.subject.other	Corrosion resistant alloys	en
dc.subject.other	Filler metals	en
dc.subject.other	Fillers	en
dc.subject.other	Functional electric stimulation	en
dc.subject.other	Hard facing	en
dc.subject.other	Mechanical properties	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	Pitting	en
dc.subject.other	Plasma diagnostics	en
dc.subject.other	Plasma torches	en
dc.subject.other	Plasma welding	en
dc.subject.other	Plasmas	en
dc.subject.other	Stainless steel	en
dc.subject.other	Corrosion resistance	en
dc.title	Addition of nitrogen and nickel in the fusion zone of plasma transferred arc weld ments in UNS 32760 super duplex stainless steel: Effect on the microstructure and on the pitting corrosion resistance	en
heal.type	conferenceItem	en
heal.publicationDate	2009	en
heal.abstract	Super duplex stainless steels exhibit excellent combination of strength and corrosion resistance, due to their strict composition control and ferrite-austenite phase balance. Nevertheless this balance is in general disturbed in the fusion zone and in the HAZ of weldments due to rapid cooling rates, leading to inferior corrosion and mechanical properties. The scope of the present work is to study the effect a) of addition of nitrogen in the plasma operation gases and b) of higher nickel content in the filler metal, on the microstructure and on pitting corrosion resistance of the fusion zone in super duplex stainless steels welded by the plasma transferred arc technique. It is shown that nitrogen addition in the plasma operation gases and higher nickel content in the filler metal have both a positive effect on the α/γ phase balance and on pitting resistance of the fusion zone of the weldments.	en
heal.journalName	TMS Annual Meeting	en
dc.identifier.volume	3	en
dc.identifier.spage	493	en
dc.identifier.epage	500	en