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Investigation of magnetic effects on austenitic stainless steels after low temperature carburization

  • This work aims at investigating the magnetic effects of austenitc stainless steels which can occur after a low temperature carburisation depending on the alloy. Samples were prepared of different alloys and subjected to a multiple low temperature carburisation to obtain different treatment conditions for each alloy. The layer characterisation was carried out by light microscope and also by hardening profiles and shows that the layer develops with each additional treatment cycle. A lattice expansion could be detected in all treated samples by X-ray diffraction. Magnetisability was measured using Feritscope and SQUID measurements. Not all alloys showed magnetisability after treatment. In addition to MFM measurements, experiments with Ferrofluid were also used to visualize the magnetic areas. These studies show that only about half of the formed layer becomes magnetisable and has a domain-like structure.

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Author:Philipp Schuler, Paul GümpelGND
Parent Title (English):Nitriding and nitrocarburising : European Conference on Heat Treatment (ECHT 2018), Proceedings, 12. - 13. April 2018, Graf-Zeppelin-Haus, Friedrichshafen, Germany
Document Type:Article
Year of Publication:2018
Contributing Corporation:Arbeitsgemeinschaft Wärmebehandlung und Werkstofftechnik e.V.
Release Date:2019/01/21
Tag:Espanded austenite, Magnetic force microscopy, Low temperature carburisation, Ferrofluid
First Page:167
Last Page:176
Relevance:Keine peer reviewed Publikation (Wissenschaftlicher Artikel und Aufsatz, Proceeding, Artikel in Tagungsband)
Open Access?:Nein