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Article: Early stages of decomposition of ferrite in duplex stainless steel

TitleEarly stages of decomposition of ferrite in duplex stainless steel
Authors
Issue Date1994
PublisherManey Publishing. The Journal's web site is located at http://www.maney.co.uk/search?fwaction=show&fwid=185
Citation
Materials Science And Technology, 1994, v. 10 n. 4, p. 306-311 How to Cite?
AbstractThe decomposition of a duplex stainless steel during aging at 600°C has been investigated using analytical transmission electron microscopy with the intention of elucidating the nucleation sites of the new phases arising from ferrite decomposition. The first transformation product to be formed is M 23 C 6 This carbide, having a cube-cube orientation relationship with the parent y grain, isfound only on certain y/a boundaries and its nucleation is shown to be strongly dependent on the y boundary plane of the y/a interface. Chromium depletion in the vicinity of γ/α boundaries caused by M 23C 6 precipitation initiates the α -→ γ transformation by migration of existing γ/ α boundaries. Another mechanism for this bcc -→ fcc phase change is observed through the growth of Widmanstatten y plates into α. Precipitation of σ begins after M 23 C 6 formation has stopped. The existence of M 23C 6 on γ/α boundaries is crucial to σ formation because the majority of σ particles are found to nucleate on nodes in migrating Y new/α boundaries caused by M 23 C 6 particle pinning. Another less common nucleation site for σ is migrating Y new/α boundaries. The σ particles nucleated on either of the sites have the Nenno orientation relationship with the parent y. In the latter stages, the σ and new γ consume the a grains via a cellular growth mechanism. © 1994 The Institute of Materials.
Persistent Identifierhttp://hdl.handle.net/10722/174010
ISSN
2015 Impact Factor: 1.008
2015 SCImago Journal Rankings: 0.668
References

 

DC FieldValueLanguage
dc.contributor.authorShek, CHen_US
dc.contributor.authorShen, GJen_US
dc.contributor.authorLai, JKLen_US
dc.contributor.authorDuggan, BJen_US
dc.date.accessioned2012-11-14T06:20:15Z-
dc.date.available2012-11-14T06:20:15Z-
dc.date.issued1994en_US
dc.identifier.citationMaterials Science And Technology, 1994, v. 10 n. 4, p. 306-311en_US
dc.identifier.issn0267-0836en_US
dc.identifier.urihttp://hdl.handle.net/10722/174010-
dc.description.abstractThe decomposition of a duplex stainless steel during aging at 600°C has been investigated using analytical transmission electron microscopy with the intention of elucidating the nucleation sites of the new phases arising from ferrite decomposition. The first transformation product to be formed is M 23 C 6 This carbide, having a cube-cube orientation relationship with the parent y grain, isfound only on certain y/a boundaries and its nucleation is shown to be strongly dependent on the y boundary plane of the y/a interface. Chromium depletion in the vicinity of γ/α boundaries caused by M 23C 6 precipitation initiates the α -→ γ transformation by migration of existing γ/ α boundaries. Another mechanism for this bcc -→ fcc phase change is observed through the growth of Widmanstatten y plates into α. Precipitation of σ begins after M 23 C 6 formation has stopped. The existence of M 23C 6 on γ/α boundaries is crucial to σ formation because the majority of σ particles are found to nucleate on nodes in migrating Y new/α boundaries caused by M 23 C 6 particle pinning. Another less common nucleation site for σ is migrating Y new/α boundaries. The σ particles nucleated on either of the sites have the Nenno orientation relationship with the parent y. In the latter stages, the σ and new γ consume the a grains via a cellular growth mechanism. © 1994 The Institute of Materials.en_US
dc.languageengen_US
dc.publisherManey Publishing. The Journal's web site is located at http://www.maney.co.uk/search?fwaction=show&fwid=185en_US
dc.relation.ispartofMaterials Science and Technologyen_US
dc.titleEarly stages of decomposition of ferrite in duplex stainless steelen_US
dc.typeArticleen_US
dc.identifier.emailDuggan, BJ: bjduggan@hkucc.hku.hken_US
dc.identifier.authorityDuggan, BJ=rp01686en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0000565826en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000565826&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume10en_US
dc.identifier.issue4en_US
dc.identifier.spage306en_US
dc.identifier.epage311en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridShek, CH=7005934975en_US
dc.identifier.scopusauthoridShen, GJ=7401966919en_US
dc.identifier.scopusauthoridLai, JKL=7401939721en_US
dc.identifier.scopusauthoridDuggan, BJ=7005772998en_US

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