Haque, N orcid.org/0000-0002-0271-9209, Cochrane, RF and Mullis, AM (2017) Disorder-order morphologies in drop-tube processed Ni3Ge: Dendritic and seaweed growth. Journal of Alloys and Compounds, 707. pp. 327-331. ISSN 0925-8388
Abstract
The single phase intermetallic β-Ni3Ge has been subject to rapid solidification via drop-tube processing. Droplets spanning the size range 212–38 μm, with corresponding cooling rates of 5800–54,500 K s−1, have been subject to microstructural investigation using SEM. Three dominant solidification morphologies have been identified with increasing cooling rate, namely; (i) well-defined dendrites with orthogonal side-branching, (ii) dendrites with non-orthogonal side-branching and (iii) dendritic seaweed. Selected area diffraction analysis in the TEM reveals that both types of dendrites are the disordered form of β-Ni3Ge in a matrix of the ordered, L12, form. However, the diffraction pattern from the dendritic seaweed cannot be mapped onto a cubic structure, indicating a change in the underlying crystallography coincident with the transition to the seaweed structure.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016, Elsevier. This is an author produced version of a paper published in Journal of Alloys and Compounds. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Intermetallic; Rapid solidification; Phase transitions; Dendrites; Seaweed structure |
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 Nov 2016 15:35 |
Last Modified: | 09 Nov 2017 01:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jallcom.2016.11.080 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107439 |