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The effect of long-term ageing at 475 degrees C on microstructure and properties of a precipitation hardening martensitic stainless steel

dc.contributor.authorVodárek, Vlastimil
dc.contributor.authorRožnovská, Gabriela
dc.contributor.authorKuboň, Zdeněk
dc.contributor.authorVolodarskaja, Anastasia
dc.contributor.authorPalupčíková, Renáta
dc.date.accessioned2022-12-05T12:42:41Z
dc.date.available2022-12-05T12:42:41Z
dc.date.issued2022
dc.identifier.citationMetals. 2022, vol. 12, issue 10, art. no. 1643.cs
dc.identifier.issn2075-4701
dc.identifier.urihttp://hdl.handle.net/10084/148952
dc.description.abstractThe effect of long-term ageing (1000, 2000, and 3000 h) at 475 degrees C on mechanical properties, microstructure, and substructure of CUSTOM 465 (R) maraging stainless steel was studied. The additional precipitation of nanometric particles of eta-Ni3Ti phase in partly recovered lath martensite and decomposition of the BCC solid solution accompanied by the formation of nanometric Cr-rich alpha'particles were identified. The fraction of reverted austenite in the final microstructure gradually increased with time of ageing at 475 degrees C. Ageing resulted in a gradual slight decline (up to 10%) in yield strength, ultimate tensile strength, and hardness. On the other hand, for all ageing, dwells ductility and impact energy values remained almost unchanged. The reason for this phenomenon lies in the gradual increase in the fraction of reverted austenite during long-term ageing at 475 degrees C and at the same time in the sluggish kinetics of microstructural changes in lath martensite. No susceptibility to 475 degrees C embrittlement was proved.cs
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofseriesMetalscs
dc.relation.urihttps://doi.org/10.3390/met12101643cs
dc.rights© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0cs
dc.subjectCUSTOM 465® stainless steelcs
dc.subjectmechanical propertiescs
dc.subjectprecipitation processescs
dc.subjectη-Ni3Ti phasecs
dc.subjectCr-rich α’ phasecs
dc.subjectreverted austenitecs
dc.subjecttwinning in martensitecs
dc.subjectlong-term ageingcs
dc.titleThe effect of long-term ageing at 475 degrees C on microstructure and properties of a precipitation hardening martensitic stainless steelcs
dc.typearticlecs
dc.identifier.doi10.3390/met12101643
dc.rights.accessopenAccesscs
dc.type.versionpublishedVersioncs
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.description.volume12cs
dc.description.issue10cs
dc.description.firstpageart. no. 1643cs
dc.identifier.wos000875068800001


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© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
Kromě případů, kde je uvedeno jinak, licence tohoto záznamu je © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.