Show simple item record

dc.creatorSamaras, G. F.en
dc.creatorHaidemenopoulos, G. N.en
dc.date.accessioned2015-11-23T10:46:51Z
dc.date.available2015-11-23T10:46:51Z
dc.date.issued2015
dc.identifier10.1016/j.engfailanal.2015.02.022
dc.identifier.issn1350-6307
dc.identifier.urihttp://hdl.handle.net/11615/32826
dc.description.abstractCarburization is a failure mechanism affecting equipment, such as furnace tubes, operating at high temperatures. Carburization simulations were carried out for the heat-resistant steels referred to the API-530 standard by applying a model for carbon diffusion with the concurrent formation of alloy carbides. The calculated carbon and carbide volume fraction profiles were validated experimentally. The carburization layer is composed from M23C6 and M7C3 carbides. The time required for the carburization front to reach the mid-thickness of the tubes was used to characterize carburization resistance. The austenitic grades exhibit a higher carburization resistance than the ferritic grades at all temperatures. In the ferritic grades, alloy composition has a stronger effect at lower service temperatures (600 degrees C) where carburization resistance increases with Cr and Mo content. The acceleration of diffusion at high temperatures (800 degrees C) dominates the composition effects on carbon diffusion, and the carburization front is controlled by the formation of carbides, which in turn depends on the available amount of Cr in the steel. In the austenitic grades, the highest carburization resistance is exhibited by the stabilized grades 321 and 347 due to formation of TiC or NbC carbides respectively. Regarding the non-stabilized grades, carburization resistance is raised by addition of Mo (316 vs 304) and lower carbon (316L vs 316). The results of this study can be used for material selection for carburization resistance and for planning maintenance procedures for the timely replacement of tubes. (C) 2015 Elsevier Ltd. All rights reserved.en
dc.source.uri<Go to ISI>://WOS:000351778200004
dc.subjectCarburizationen
dc.subjectCarbon profileen
dc.subjectCarbide fronten
dc.subjectHigh temperatureen
dc.subjectAPI 530en
dc.subjectFAILUREen
dc.subjectTUBESen
dc.subjectGASen
dc.subjectBEHAVIORen
dc.subjectFURNACEen
dc.subjectALLOYSen
dc.subjectPLANTen
dc.subjectEngineering, Mechanicalen
dc.subjectMaterials Science, Characterization & Testingen
dc.titleCarburization of high-temperature steels: A simulation-based ranking of carburization resistanceen
dc.typejournalArticleen


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record