Inam, A, Brydson, R orcid.org/0000-0003-2003-7612 and Edmonds, DV (2017) A high-resolution study of graphite nodule formation in experimental medium-carbon machining steel. Materials Characterization, 131. pp. 508-516. ISSN 1044-5803
Abstract
Alloying a medium-carbon steel has accelerated graphite formation during annealing, for example, during high-temperature tempering. Electron microscopy and related techniques have been used to characterise the graphite particle structure and dispersion from pre-anneal starting microstructures of ferrite-pearlite, bainite and martensite. Graphitisation in the solid state in steels (and also, for useful comparison, in cast irons) has previously received little attention. However, FIB/FEGSEM has permitted specimen preparation of the relatively coarse microstructures, thus enabling high-resolution observation previously limited for graphite formation in cast irons and steels. The study has importance to the potential development of more economic and user-friendly machining steels, which would rely upon internal lubrication by graphite nodules within the microstructure. Many recently developed advanced steels are reduced in carbon but expensively alloyed to produce the desired properties, whereas an aim in this project is simply to use carbon, which is a very cheap and abundant alloying element.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2017 Published by Elsevier Inc. This is an author produced version of a paper published in Materials Characterization. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Free-machining steel; Graphitisation; Ferrite/pearlite, bainite, martensite; FIB/FEGSEM; HRTEM |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 25 Jul 2017 14:04 |
Last Modified: | 25 Jul 2018 00:40 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.matchar.2017.07.040 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:119512 |