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DC Field | Value | Language |
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dc.contributor.author | Wang, Wei | - |
dc.contributor.author | Guo, Enyu | - |
dc.contributor.author | Phillion, A.B. | - |
dc.contributor.author | Eskin, Dmitry G. | - |
dc.contributor.author | Wang, Tongmin | - |
dc.contributor.author | Lee, Peter D | - |
dc.date.accessioned | 2021-05-25T19:08:00Z | - |
dc.date.available | 2021-05-25T19:08:00Z | - |
dc.date.issued | 2020-08 | - |
dc.identifier.uri | http://hdl.handle.net/11375/26477 | - |
dc.description.abstract | Four-dimensional fast synchrotron X-ray tomography has been used to investigate the semi-solid deformation of nano- and micro-particle reinforced aluminum-copper composites (Al-10 wt% Cu alloy with ~1.0 wt% Al2O3 nano and ~1.0 wt% Al2O3 micro particles). Quantitative image analysis of the semi-solid deformation behavior of three alloys (base, nano- and micro-particle reinforced) revealed the influence of the particulate size on both microstructural formation and dominant deformation mechanisms. The results showed that initial void closure and incubation period were present in the particle-free and nano-particle reinforced Al-Cu composite during semi-solid compression, while the micro-particle reinforced alloy only showed continual voids growth and coalescence into cracks. The results suggest that the nano-particle 2 reinforced composite have the best hot-tearing resistance amongst the three alloys. Improved hot-tear performance with nano-particulate reinforcement was attributed to the small liquid channel thickness, fine grain size which alters the distribution/morphology of the liquid channels, more viscous inter-dendritic liquid, and fewer initial voids. | en_US |
dc.description.sponsorship | E. G and T. W acknowledge the financial support by the National Key Research and Development Program of China (No. 2017YFA0403803), National Natural Science Foundation of China (Nos. 51901034, 51525401, 51927801, 51974058) and LiaoNing 13 Revitalization Talents Program (No. XLYC1808005). D. E acknowledges financial support from the ExoMet Project funded by the European Commission in the 7th Framework Programme (Contract FP7-NMP3-LA-2012– 280421) and EPSRC-funded project UltraMelt2 (EP/R011001/1). The experiments were funded by the EPSRC (EP/I02249X/1) and the Royal Academy of Engineering (CiET1819/10), and were performed at TOMCAT beamline of the Swiss Light Source (Paul Scherrer Institut, Switzerland, 20120463). We acknowledge both the beamline staff and Prof. Lee’s group for performing the beamline experiments. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Materialia | en_US |
dc.subject | Metal matrix composites | en_US |
dc.subject | Semi-solid deformation | en_US |
dc.subject | Dilatancy | en_US |
dc.subject | Hot-tearing | en_US |
dc.title | Semi-solid Compression of Nano/Micro-Particle Reinforced Al-Cu Composites: An In Situ Synchrotron Tomographic Study | en_US |
dc.contributor.department | Materials Science and Engineering | en_US |
Appears in Collections: | Materials Science and Engineering Publications |
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File | Description | Size | Format | |
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2020_Materialia_Wang_etal.pdf | 1.19 MB | Adobe PDF | View/Open |
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