Oloyede, O, Cochrane, RF and Mullis, AM (2017) Phase transformation, microstructural evolution and property modification in rapidly solidified grey cast iron. In: TMS 2017 Conference Proceedings (Frontiers in Solidification Science). TMS 2017 Spring Meeting, 26 Feb - 02 Mar 2017, San Diego, US. Springer International Publishing , pp. 719-727. ISBN 978-3-319-51492-5
Abstract
The phase transformation and microhardness changes of hypoeutectic grey iron subjected to rapid solidification in Helium was studied to showcase the relationship between the evolved microstructure and microhardness of this important engineering material. Droplets samples were prepared, using containerless processing via drop-tube technique. These rapidly solidified samples were collected and sieved into 8 size ranges from 850 µm to 53 µm diameters with corresponding estimated cooling rate range of ~900 K/s to ~78,000 K/s respectively. The emerged phases and evolved morphologies were characterized using optical and scanning electron microscopy and X-ray diffraction analysis; while Vickers microhardness tester was used to measure the hardness of the various samples. As the cooling rate increases, the undercooling increased and martensitic or acicular ferrite structure was observed in the very small droplets which confirms the progressive increase in microhardness of the samples from the as-cast to decreasing droplets sizes.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2017, Springer. This is an author produced version of a paper published in TMS 2017 Spring Meeting. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Cast iron; Drop-tube; Phase Transformation; Rapid Solidification; Microstructure; Grey iron; Microhardness |
Dates: |
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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: | 14 Dec 2016 15:32 |
Last Modified: | 21 Feb 2018 01:38 |
Status: | Published |
Publisher: | Springer International Publishing |
Identification Number: | 10.1007/978-3-319-51493-2_69 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:109305 |