Te healing of the cracks. The simulations performed are in great
Te healing of the cracks. The simulations performed are in good agreement together with the experimental and numerical results on the fracture of bcc Fe single crystals.Author Contributions: Conceptualization and methodology, D.S.K. and K.P.Z.; validation, D.S.K. plus a.V.K.; investigation, D.S.K. along with a.V.K.; writing–original draft preparation, D.S.K.; writing– assessment and editing, D.S.K., A.V.K. and K.P.Z.; visualization, D.S.K.; supervision and project administration, D.S.K. All authors have study and agreed towards the published version with the manuscript. Funding: The work was performed according to the Government analysis assignment for ISPMS SB RAS, project FWRW-2021-0002. Institutional Assessment Board Statement: Not applicable. Informed Consent Statement: Not applicable. Information Availability Statement: Data sharing not applicable. Conflicts of Interest: The authors declare no conflict of interest. The funders had no part within the design and style from the study; within the IEM-1460 MedChemExpress collection, analyses, or interpretation of information; inside the writing with the manuscript, or within the decision to publish the results.
materialsArticleInvestigation from the 0.4C-35Cr-45Ni-Nb Alloy right after Service in High-Temperature Steam and Hydrocarbons EnvironmentJuliusz Orlikowski 1 , Michal Szocinski 1, , Janusz Zygmuntowicz 2 , Gabriel Gajewski two , Wojciech Filipkowski 2 and Kazimierz DarowickiDepartment of Electrochemistry, Corrosion and Supplies Engineering, Chemical Faculty, Gdansk University of Technology, G. Narutowicza Str. 11/12, 80-233 Gdansk, Poland; [email protected] (J.O.); [email protected] (K.D.) PKN Orlen S.A., Chemik Str. 7, 09-411 Plock, Poland; [email protected] (J.Z.); [email protected] (G.G.); [email protected] (W.F.) Correspondence: [email protected]; Tel.: +48-(58)-Citation: Orlikowski, J.; Szocinski, M.; Zygmuntowicz, J.; Gajewski, G.; Filipkowski, W.; Darowicki, K. Investigation of your 0.4C-35Cr-45Ni-Nb Alloy following Service in High-Temperature Steam and Hydrocarbons Environment. Materials 2021, 14, 6139. https:// doi.org/10.3390/ma14206139 Received: 9 September 2021 Accepted: 12 October 2021 Published: 15 OctoberAbstract: The paper presents the results of investigation on the 0.4C-35Cr-45Ni-Nb alloy, which operated in the cracked hydrocarbon feeds and dilution steam at 1125 C. The material originated in the pyrolytic furnace coil tubes, of which internal walls had been in get in touch with with the aforementioned medium, whereas the external walls had been in get in touch with with the flue gases. The examination integrated metallographic and mechanical tests around the material right after service exposure, the results of which were compared together with the ones obtained for the as-received non-exposed specimens. The metallographic tests revealed modifications inside the alloy’s structure manifested by formation of significant quantity of the carbides as a consequence of carburization from the alloy from the steam and cracked hydrocarbon feeds side. The central and external parts on the alloy samples (getting no get in touch with with the method medium) underwent substantial degradation but within a somewhat narrow zone in the material. The investigations of hydrogen and GNF6702 Parasite methane content material inside the alloy showed a higher amount of these gases, resulting from high-temperature corrosion in steam environment. The mechanical tests demonstrated clear shortening in the plastic deformation array of the alloy as a consequence of penetration of the gases and formation from the carbides inside the material’s structure. A low level of corrosion and no creep m.