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http://bura.brunel.ac.uk/handle/2438/15131
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DC Field | Value | Language |
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dc.contributor.author | Wang, F | - |
dc.contributor.author | Tzanakis, I | - |
dc.contributor.author | Eskin, D | - |
dc.contributor.author | Mi, J | - |
dc.contributor.author | Connolley, T | - |
dc.contributor.editor | Ratvik, AP | - |
dc.coverage.spatial | San Diego, CA | - |
dc.date.accessioned | 2017-09-11T12:26:02Z | - |
dc.date.available | 2017-01-01 | - |
dc.date.available | 2017-09-11T12:26:02Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | LIGHT METALS 2017, 2017, pp. 213 - 219 (7) | en_US |
dc.identifier.isbn | 978-3-319-51540-3 | - |
dc.identifier.issn | http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000407106200029&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=f12c8c83318cf2733e615e54d9ed7ad5 | - |
dc.identifier.issn | http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000407106200029&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=f12c8c83318cf2733e615e54d9ed7ad5 | - |
dc.identifier.issn | 2367-1181 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/15131 | - |
dc.description.abstract | Ultrasonic melt processing is a promising technique for microstructural refinement in castings. Several mechanisms have been proposed for the observed effects, including cavitation-induced nucleation, activation of substrates and fragmentation. Until now, however, real-time experimental observations which could clarify any of the above mechanisms are very limited. For the first time we directly observed the fragmentation of primary crystals formed in alloys by ultrasonic cavitation. The primary crystals were extracted from real Al alloys and subjected to ultrasonic processing in water with in situ high-speed filming. The recordings of fragmentation of the primary crystals allowed us to observe the different mechanisms of fragmentation, depending on the mechanical properties and morphology of the primary crystals. The collapse of cavitation bubbles in water is less violent than that in liquid aluminum due to the lower cavitation threshold, viscosity and surface tension. Therefore the fragmentation mechanisms for the primary crystals observed in water should also be present for the same primary crystals in the more violent cavitation situation in liquid aluminum. | en_US |
dc.description.sponsorship | The authors acknowledge the financial support from UK Engineering and Physical Science Research Council (EPSRC) for the Ultra-Cast project (grant EP/L019884/1, EP/L019825/1, EP/L019965/1). The authors are also grateful to Diamond Light Source Ltd for the loan of high speed camera. | en_US |
dc.format.extent | 213 - 219 (7) | - |
dc.language.iso | en | en_US |
dc.publisher | SPRINGER INTERNATIONAL PUBLISHING AG | en_US |
dc.source | 146th TMS Annual Meeting and Exhibition / Conference on Light Metals | - |
dc.source | 146th TMS Annual Meeting and Exhibition / Conference on Light Metals | - |
dc.subject | Aluminum alloy | en_US |
dc.subject | Ultrasonic processing | en_US |
dc.subject | Primary crystals | en_US |
dc.subject | Fragmentation mechanism | en_US |
dc.subject | Cavitation | en_US |
dc.subject | In-situ high speed filming | en_US |
dc.subject | UNDERCOOLED LIQUID | en_US |
dc.subject | CU ALLOY | en_US |
dc.subject | SOLIDIFICATION | en_US |
dc.subject | ALUMINUM | en_US |
dc.subject | NUCLEATION | en_US |
dc.subject | AL3TI | en_US |
dc.subject | MELT | en_US |
dc.title | In Situ Observation of Fragmentation of Primary Crystals by Ultrasonic Cavitation in Water | en_US |
dc.type | Article | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/978-3-319-51541-0_29 | - |
dc.relation.isPartOf | LIGHT METALS 2017 | - |
pubs.finish-date | 2017-03-02 | - |
pubs.finish-date | 2017-03-02 | - |
pubs.publication-status | Published | - |
pubs.start-date | 2017-02-26 | - |
pubs.start-date | 2017-02-26 | - |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
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FullText.pdf | 836.56 kB | Adobe PDF | View/Open |
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