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https://hdl.handle.net/2440/66639
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DC Field | Value | Language |
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dc.contributor.author | Nafisi, S. | - |
dc.contributor.author | Lashkari, O. | - |
dc.contributor.author | Ghomashchi, R. | - |
dc.contributor.author | Ajersch, F. | - |
dc.contributor.author | Charette, A. | - |
dc.date.issued | 2006 | - |
dc.identifier.citation | Acta Materialia, 2006; 54(13):3503-3511 | - |
dc.identifier.issn | 1359-6454 | - |
dc.identifier.issn | 1873-2453 | - |
dc.identifier.uri | http://hdl.handle.net/2440/66639 | - |
dc.description.abstract | A comprehensive study was carried out to establish the effect of melt treatment using Ti-B grain refiner and Sr modifier additions on the microstructural evolution and rheological properties of A356 aluminum alloy in the semisolid state. Rheocast billets of 75 mm in diameter and ∼140 mm in length, prepared by the SEED process, were deformed and several parameters were investigated to characterize the flow behavior of the billets in a compression test. Strain-time graphs were used to calculate the viscosity and liquid segregation was monitored to identify the optimum conditions for melt treatment. It is shown that non-treated alloy has the highest apparent viscosity. Refined semisolid billets have smaller particle size and more globularity of primary α-Al particles and as a result deform and flow more easily. It is postulated that modifier addition reduces the liquid surface tension and leads to improved deformability. © 2006 Acta Materialia Inc. | - |
dc.description.statementofresponsibility | Shahrooz Nafisi, Omid Lashkari, Reza Ghomashchi, Frank Ajersch, Andre Charette | - |
dc.language.iso | en | - |
dc.publisher | Pergamon-Elsevier Science Ltd | - |
dc.rights | Copyright © 2006 Acta Materialia Inc. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.actamat.2006.03.016 | - |
dc.subject | Semisolid | - |
dc.subject | SEED process | - |
dc.subject | Rheological properties | - |
dc.subject | Viscosity | - |
dc.subject | Grain refiner | - |
dc.subject | Modifier | - |
dc.title | Microstructure and rheological behavior of grain refined and modified semi-solid A356 Al–Si slurries | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.actamat.2006.03.016 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Ghomashchi, R. [0000-0003-3633-2296] | - |
Appears in Collections: | Aurora harvest 5 Materials Research Group publications Mechanical Engineering publications |
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