Comparative study of precipitation effects during aging in superaustenitic and superferritic stainless steels

Koutsoukis, T; Konstantinidis, K; Papadopoulou, EG; Kokkonidis, P; Fourlaris, G

dc.contributor.author	Koutsoukis, T	en
dc.contributor.author	Konstantinidis, K	en
dc.contributor.author	Papadopoulou, EG	en
dc.contributor.author	Kokkonidis, P	en
dc.contributor.author	Fourlaris, G	en
dc.date.accessioned	2014-03-01T01:35:25Z
dc.date.available	2014-03-01T01:35:25Z
dc.date.issued	2011	en
dc.identifier.issn	0267-0836	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21044
dc.subject	Hardness	en
dc.subject	HIP	en
dc.subject	Intermetallic formation	en
dc.subject	Precipitation	en
dc.subject	Superaustenitic stainless steels	en
dc.subject	Superferritic stainless steels	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.other	HIP	en
dc.subject.other	Intermetallic formation	en
dc.subject.other	Precipitation	en
dc.subject.other	Superaustenitic stainless steel	en
dc.subject.other	Superferritic stainless steel	en
dc.subject.other	Corrosion resistance	en
dc.subject.other	Corrosion resistant alloys	en
dc.subject.other	Hardness	en
dc.subject.other	Hardness testing	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Stainless steel	en
dc.title	Comparative study of precipitation effects during aging in superaustenitic and superferritic stainless steels	en
heal.type	journalArticle	en
heal.identifier.primary	10.1179/026708310X12712410311938	en
heal.identifier.secondary	http://dx.doi.org/10.1179/026708310X12712410311938	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The concept of designing a steel that would match high corrosion resistance coupled with improved mechanical properties when exposed at elevated temperatures has always been a challenge for a metallurgist. The present paper relates the results of microstructural analysis of two commercial superaustenitic stainless steel grades and a novel experimental grade of superferritic stainless steel. A study of the microstructural stability and attendant mechanical property evolution has been carried out, employing a variety of aging experiments. Following prolonged aging up to 1000 h in the temperature range between 650 and 950°C, microstructure evolution was determined, while the mechanical properties were preliminary assessed via hardness testing. The present study helped clarify the effect of high temperature exposure on the precipitation sequences of both superaustenitic and novel superferritic stainless steels. The heat treatments performed indicate a number of precipitation sequences of intermetallic phases taking place, such as σ phase formation, clearly specifying a time-temperature regime where care must be taken during the fabrication and use of these materials. © 2011 Institute of Materials, Minerals and Mining.	en
heal.publisher	MANEY PUBLISHING	en
heal.journalName	Materials Science and Technology	en
dc.identifier.doi	10.1179/026708310X12712410311938	en
dc.identifier.isi	ISI:000289620200014	en
dc.identifier.volume	27	en
dc.identifier.issue	5	en
dc.identifier.spage	943	en
dc.identifier.epage	950	en