dc.contributor.author | Mirihanage, Wajira | |
dc.contributor.author | Falch, Ken Vidar | |
dc.contributor.author | Snigireva, Irina | |
dc.contributor.author | Snigirev, A | |
dc.contributor.author | Li, Yanjun | |
dc.contributor.author | Arnberg, Lars | |
dc.contributor.author | Mathiesen, Ragnvald | |
dc.date.accessioned | 2017-12-21T14:04:12Z | |
dc.date.available | 2017-12-21T14:04:12Z | |
dc.date.created | 2014-11-21T15:14:52Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | Acta Materialia. 2014, 81 241-247. | nb_NO |
dc.identifier.issn | 1359-6454 | |
dc.identifier.uri | http://hdl.handle.net/11250/2473561 | |
dc.description.abstract | In situ synchrotron X-ray radiography of columnar dendritic growth in Al–15 wt.% Cu–9 wt.% Si–0.015 wt.% Sr alloy has been carried out with the temporal and spatial resolutions of 100 ms and 0.65 μm, respectively. Two-dimensional (2-D) projected images have been processed and analysed to retrieve three-dimensional (3-D) spatial information on the growing dendrite network, through X-ray transmission contrast differences that account for solute-composition variations in the liquid and thickness variations in the growing dendrites. The analysis elucidates the way in which gravity-driven natural convection and solute sedimentation can result in solid fractions that deviate markedly from Scheil and Lever-rule-based models, which could alter mushy zone permeability. Furthermore, the ability to render 3-D spatial details may lead to future opportunities to use 2-D radiography in the development and validation of more sophisticated 3-D models of dendritic growth. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.title | Retrieval of three-dimensional spatial information from fast in situ two-dimensional synchrotron radiography of solidification microstructure evolution | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 241-247 | nb_NO |
dc.source.volume | 81 | nb_NO |
dc.source.journal | Acta Materialia | nb_NO |
dc.identifier.doi | 10.1016/j.actamat.2014.08.016 | |
dc.identifier.cristin | 1175665 | |
dc.description.localcode | This article will not be available due to copyright restrictions (c) 2014 by Elsevier | nb_NO |
cristin.unitcode | 194,66,20,0 | |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for fysikk | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |