Dragnevski, KI, Pellegrino, A, Heard, R et al. (3 more authors) (2020) Mechanical behaviour of rapidly solidified copper: effects of undercooling and strain rate. Materials Science and Technology, 36 (2). pp. 202-209. ISSN 0267-0836
Abstract
In this paper we present the results, from what we believe is the first ever attempt to study the mechanical behaviour of pure highly undercooled Cu specimens. The data revealed that the strength of the studied system increases not only with an increase of the level of undercooling, but also with the rate of testing. Microstructural analysis demonstrated that at undercoolings above 200 K the specimens underwent a transition from dendritic to a grain refined structure, accompanied with a break in the stress-undercooling relationship. It is suggested that on this occasion the transition was the result of two competing mechanisms: dendrite fragmentation and recrystallization. Finally, the relationship between the resultant grain sizes and measured stresses is compared against the Hall-Petch Law.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Institute of Materials, Minerals and Mining. This is an author produced version of an article published in Materials Science and Technology. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Undercooling; high strain rate testing; mechanical behaviour; copper; grain refinement; rapid solidification; dendrite fragmentation; recrystallization |
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: | 11 Dec 2019 13:24 |
Last Modified: | 20 Nov 2020 01:38 |
Status: | Published |
Publisher: | Taylor & Francis |
Identification Number: | 10.1080/02670836.2019.1691354 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:154389 |