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Deformation of inclusions in rail steel due to rolling contact

Chard, Alison Elizabeth (2012)
M.Res. thesis, University of Birmingham.

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Abstract

Rolling contact fatigue (RCF) is a significant problem in the rail industry as it causes rapid and difficult to detect cracks. Inclusions present in the material can have an adverse effect on the RCF life of rails. This study aims to discover the impact of the loading of rail steel in service on the inclusions present within the material. The work pays particular attention to the elongation and flattening of MnS inclusions and their contribution toward rail failure using a combination of micro-hardness measurements, inclusion analysis and focused ion beam analysis. The results indicate that the inclusions present in the material are considerably elongated by the loading of the rail in service and this may contribute to spontaneous cracking or assist in crack propagation.

Type of Work:M.Res. thesis.
Supervisor(s):Davies, Claire
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Metallurgy and Materials
Subjects:TN Mining engineering. Metallurgy
Institution:University of Birmingham
ID Code:3295
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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