%0 Journal Article %1 Zabler20131244 %A Zabler, S. %A Ershov, A. %A Rack, A. %A Garcia-Moreno, F. %A Baumbach, T. %A Banhart, J. %D 2013 %J Acta Materialia %K data_analysis in-situ radiography myPUB %N 4 %P 1244 - 1253 %R 10.1016/j.actamat.2012.10.047 %T Particle and liquid motion in semi-solid aluminium alloys: A quantitative in situ microradioscopy study %U http://www.sciencedirect.com/science/article/pii/S135964541200794X %V 61 %X Semi-solid melts exhibit a very unpredictable rheology and filling dynamics, when injected into thin-walled components. Optimization of the process requires an insight into the casting process during injection. For this purpose we injected semi-solid an Al–Ge alloy into two different thin channel geometries while recording high resolution radiographs at fast frame rates (up to 1000 images per s). Comparison of a bottleneck channel, which has previously been used for slower experiments, with a right-angle turn geometry reveals a significant influence of the channel shape on the flow behaviour of the particle–liquid mixture. While the bottleneck is quickly sealed with densified solid, turbulences in the right-angle turn apparently permit solid particles and clusters to move conjointly with the liquid and thus achieve a more complete filling. Single particle trajectories and rapid break-up of solid skeletons in such a system have been observed for the first time in situ.

@article{Zabler20131244, abstract = {Semi-solid melts exhibit a very unpredictable rheology and filling dynamics, when injected into thin-walled components. Optimization of the process requires an insight into the casting process during injection. For this purpose we injected semi-solid an Al–Ge alloy into two different thin channel geometries while recording high resolution radiographs at fast frame rates (up to 1000 images per s). Comparison of a bottleneck channel, which has previously been used for slower experiments, with a right-angle turn geometry reveals a significant influence of the channel shape on the flow behaviour of the particle–liquid mixture. While the bottleneck is quickly sealed with densified solid, turbulences in the right-angle turn apparently permit solid particles and clusters to move conjointly with the liquid and thus achieve a more complete filling. Single particle trajectories and rapid break-up of solid skeletons in such a system have been observed for the first time in situ.}, added-at = {2013-03-06T17:31:35.000+0100}, author = {Zabler, S. and Ershov, A. and Rack, A. and Garcia-Moreno, F. and Baumbach, T. and Banhart, J.}, biburl = {https://www.bibsonomy.org/bibtex/20ed0af1972f5bde386a5695cf6ac7e57/alex_ruff}, description = {ScienceDirect.com - Acta Materialia - Particle and liquid motion in semi-solid aluminium alloys: A quantitative in situ microradioscopy study}, doi = {10.1016/j.actamat.2012.10.047}, interhash = {6171b3e0e17bbd82d673d9c937aa3257}, intrahash = {0ed0af1972f5bde386a5695cf6ac7e57}, issn = {1359-6454}, journal = {Acta Materialia}, keywords = {data_analysis in-situ radiography myPUB}, number = 4, pages = {1244 - 1253}, timestamp = {2013-03-07T11:02:29.000+0100}, title = {Particle and liquid motion in semi-solid aluminium alloys: A quantitative in situ microradioscopy study}, url = {http://www.sciencedirect.com/science/article/pii/S135964541200794X}, volume = 61, year = 2013 }