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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/11980

Title: Microstructural evolution in 9 wt.% Cr power plant steels
Authors: Li, Letian
Keywords: 9Cr power plant steels
Microstructural evolution
Creep strength
Heat treatment
Issue Date: 2013
Publisher: © Letian Li
Abstract: High chromium ferritic steels such as Grade 91 and Grade 92 are extensively used in the power plant industry. Components made from these types of steels, including headers, steam pipes and tubes, are required to provide reliable service at high pressures (20-30 MPa) and temperatures (550-610°C) for several decades. However, in order to further improve the thermal efficiency of the power plant, the future operation temperature for the ferritic steels needs to be elevated to 650°C. Therefore, the current research project focuses on the examination of recently developed MarBN type steels (Martensitic steel strengthened by Boron and Nitrides) and four Grade 92 derivatives in order to evaluate their suitability for 650°C application, and also to assess their creep strength from a microstructural point of view. [Continues.]
Description: A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.
URI: https://dspace.lboro.ac.uk/2134/11980
Appears in Collections:PhD Theses (Materials)

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