@article{MTMT:35294216, title = {Reproduction of decarburization caused by overheating in fire tube boiler material}, url = {https://m2.mtmt.hu/api/publication/35294216}, author = {Szabó, Annamária and Kemény, Dávid Miklós and Kovács, Dorina}, doi = {10.1016/j.matlet.2024.137337}, journal-iso = {MATER LETT}, journal = {MATERIALS LETTERS}, volume = {377}, unique-id = {35294216}, issn = {0167-577X}, abstract = {One of the non-destructive testing methods for analysing fire tubes is the replica technique. This technique allows the investigation of microstructure, cracking, and high-temperature creep under operational circumstances without the cutting of the components. A cellulose-acetate foil was used to make a copy from the topography of the surface, which was suitable for microscopic analysis. In this paper, decarburization was generated in P355N fire tube material. The aim of the reproduction was to investigate the effect of overheating in boilers. The decarburization of the fire tube was made at different temperatures (300 – 900 °C) in an electric heating furnace. General deterioration and decarbonization began at 700 °C. A preliminary step of the decarburization was the transformation of the pearlite, which can be easily detected by scanning electron microscope. Grain growth could not be observed, and the particle size was unrelated to the thickness of the decarbonized layer. © 2024}, keywords = {Creep testing; HIGH TEMPERATURE CREEP; Pearlite; Microscopic analysis; Decarburization; Decarburization; Premixed flames; Decarbonization; Cellulose acetates; Nondestructive testing method; Fire tube boilers; Fire tube boiler; Electron tube testing; Fireclay; A cellulose; Boiler material; Fire-tube boilers; In situ metallography; In situ metallography; Replica technique; Replica technique; Tube materials}, year = {2024}, eissn = {1873-4979}, orcid-numbers = {Kovács, Dorina/0000-0001-6555-9057} } @article{MTMT:32008431, title = {The separation of ε- and γ’-phases in the plasma nitrided layer by colour etching techniques}, url = {https://m2.mtmt.hu/api/publication/32008431}, author = {Kovács, Dorina and Szabó, Annamária}, doi = {10.1051/metal/2021035}, journal-iso = {METALL RES TECHNOL}, journal = {METALLURGICAL RESEARCH & TECHNOLOGY}, volume = {118}, unique-id = {32008431}, issn = {2271-3646}, year = {2021}, eissn = {2271-3654}, orcid-numbers = {Kovács, Dorina/0000-0001-6555-9057} } @inproceedings{MTMT:32004521, title = {Helyszíni metallográfiai vizsgálatok}, url = {https://m2.mtmt.hu/api/publication/32004521}, author = {Szabó, Annamária}, booktitle = {XXIX. Nemzetközi Gépészeti Konferencia OGÉT 2021}, unique-id = {32004521}, year = {2021}, pages = {136-139} } @article{MTMT:31368915, title = {Az aktív ernyő anyagának szerepe a plazmanitridálás során}, url = {https://m2.mtmt.hu/api/publication/31368915}, author = {Kovács, Dorina and Szabó, Annamária and Kemény, Alexandra}, doi = {10.33923/amt-2020-01-04}, journal-iso = {ACTA MATER TRANSYLV (HU)}, journal = {ACTA MATERIALIA TRANSYLVANICA (HU)}, volume = {3}, unique-id = {31368915}, issn = {2601-1883}, year = {2020}, eissn = {2668-1366}, pages = {20-25}, orcid-numbers = {Kovács, Dorina/0000-0001-6555-9057; Kemény, Alexandra/0000-0001-8239-2252} } @article{MTMT:31368920, title = {The role of the material of active screen during the plasma nitriding process}, url = {https://m2.mtmt.hu/api/publication/31368920}, author = {Kovács, Dorina and Szabó, Annamária and Kemény, Alexandra}, doi = {10.33924/amt-2020-01-04}, journal-iso = {ACTA MATER TRANSYLV (EN)}, journal = {ACTA MATERIALIA TRANSYLVANICA (EN)}, volume = {3}, unique-id = {31368920}, year = {2020}, eissn = {2601-8799}, pages = {20-25}, orcid-numbers = {Kovács, Dorina/0000-0001-6555-9057; Kemény, Alexandra/0000-0001-8239-2252} } @inproceedings{MTMT:31289210, title = {Titán alapú aktív ernyős plazmanitridálás: Titanium based active screen plasma nitriding}, url = {https://m2.mtmt.hu/api/publication/31289210}, author = {Szabó, Annamária and Szlancsik, Attila}, booktitle = {XXVIII. Nemzetközi Gépészeti Konferencia – OGÉT 2020}, unique-id = {31289210}, year = {2020}, pages = {85-88}, orcid-numbers = {Szlancsik, Attila/0000-0002-1595-1461} }