eprintid: 10091830 rev_number: 15 eprint_status: archive userid: 608 dir: disk0/10/09/18/30 datestamp: 2020-02-21 15:34:03 lastmod: 2021-09-21 21:58:14 status_changed: 2020-02-21 15:34:03 type: article metadata_visibility: show creators_name: Nelson, T creators_name: Cai, B creators_name: Warnken, N creators_name: Lee, PD creators_name: Boller, E creators_name: Magdysyuk, OV creators_name: Green, NR title: Gravity effect on thermal-solutal convection during solidification revealed by four-dimensional synchrotron imaging with compositional mapping ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F45 keywords: Solidification, Gravity, 4D, Synchrotron tomography note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: The effect of gravity on thermo-solutal convection and its impact on solidification dynamics of an Al-15 wt%Cu alloy were studied using high speed synchrotron tomography. A method for mapping the composition of the solidifying samples was developed, enabling three-dimensional quantification of the time evolved solute concentration and dendrite morphology. Differences in solute segregation, dendrite morphology and fragmentation between upwards and downwards solidification were identified, which were attributed to buoyancy-modulated thermal-solutal convection. date: 2020-04-15 date_type: published official_url: https://doi.org/10.1016/j.scriptamat.2019.12.026 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1751228 doi: 10.1016/j.scriptamat.2019.12.026 lyricists_name: Lee, Peter lyricists_id: PLEEX57 actors_name: Lee, Peter actors_id: PLEEX57 actors_role: owner full_text_status: public publication: Scripta Materialia volume: 180 pagerange: 29-33 citation: Nelson, T; Cai, B; Warnken, N; Lee, PD; Boller, E; Magdysyuk, OV; Green, NR; (2020) Gravity effect on thermal-solutal convection during solidification revealed by four-dimensional synchrotron imaging with compositional mapping. Scripta Materialia , 180 pp. 29-33. 10.1016/j.scriptamat.2019.12.026 <https://doi.org/10.1016/j.scriptamat.2019.12.026>. Green open access document_url: https://discovery-pp.ucl.ac.uk/id/eprint/10091830/1/J310_Nelson_Cai_Scripta_as_accepted_191219.pdf