Original title: The Changes in Structure of Steel P91 after Short Annealings
Authors: Král, Lubomír ; Čermák, Jiří ; Král, Petr
Document type: Papers
Conference/Event: METAL 2015 - International Conference on Metallurgy and Materials /24./, Brno (CZ), 2015-06-03 / 2015-06-05
Year: 2015
Language: eng
Abstract: Phase composition of the steel P91 during annealing was studied with the aim to reveal the evolution of new phases. In this paper, the precipitation was characterized using energy-dispersive X-ray spectroscopy (EDS) and electron diffraction in transmission microscopy (TEM). Only Nb-rich particles were found in the studied samples austenitized at 1423 °C for 20h and water cooled. After tempering at 673 °C for 2 h, the formation mainly M3C type carbides and after tempering at 873 °C for 2 h, the formation of M7C3 and M23C6 was observed. These structure changes play an important role for stability and also carbon diffusion.
Keywords: carbides; carbon; P91; precipitation
Project no.: ED1.1.00/02.0068, EE2.3.20.0214
Funding provider: GA MŠk, GA MŠk
Host item entry: Metal 2015: 24th International Conference on Metallurgy and Materials, ISBN 978-80-87294-58-1

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0250486

Permalink: http://www.nusl.cz/ntk/nusl-200727


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Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers