Mullis, AM orcid.org/0000-0002-5215-9959, Bollada, PC and Jimack, PK (2018) Simulation of Intermetallic Solidification using Phase-Field Techniques. Transactions of the Indian Institute of Metals, 71 (11). pp. 2617-2622. ISSN 0972-2815
Abstract
We present current ideas towards developing a phase-field model appropriate to the solidification of intermetallic phases. Such simulation presents two main challenges (i) dealing with faceted interfaces and (ii) the complex sub-lattice models used to describe the thermodynamics of such phases. Although models are already existent for the simulation of faceted crystals, some of these can be shown to produce highly unrealistic Wulff shapes. The model present here uses a parameterization of the Wulff shape as a direct input to the model, allowing the simulation of arbitrary crystal shapes. In addition, an anti-trapping current that can be used with arbitrary (including sub-lattice) thermodynamics is presented. Such antitrapping currents are vital in the simulation of intermetallic phases where the steep liquidus slope means small deviations in solute partitioning behaviour can translate to a significant change in tip undercooling.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Indian Institute of Metals - IIM 2018. This is a post-peer-review, pre-copyedit version of an article published in Transactions of the Indian Institute of Metals. The final authenticated version is available online at: https://doi.org/10.1007/s12666-018-1428-3. |
Keywords: | intermetallic compounds; solute trapping; facted crystals; Thermodynamics; phase-field; anti-trapping currents |
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) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Computing (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/N007638/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Sep 2018 09:51 |
Last Modified: | 15 Oct 2019 00:38 |
Status: | Published |
Publisher: | Springer India |
Identification Number: | 10.1007/s12666-018-1428-3 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135708 |