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In situ study on dendrite growth of metallic alloy by a synchrotron radiation imaging technology

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Abstract

This study was trying to observe the real-time dendrite growth of Sn-Bi and Sn-Pb binary alloys by a synchrotron radiation imaging technology. The imaging system includes an intense and high brightness synchrotron radiation source, a high-resolution and fast-readout charge coupled device camera, an alloy sample and a Bridgman solidification system. The imaging experiments were done at Beijing Synchrotron Radiation Facility with an updated synchrotron radiation imaging technique, diffraction-enhanced imaging, which was firstly used to study the dendrite growth of metallic alloy. A series of growth behavior and morphology evolution of dendrite have been in situ observed, such as columnar-to-equiaxed transition, dendrite competition, dendrite fragmentation and floating, etc., which can offer the direct proofs to verify or improve the solidification theories of metallic alloy. This research opens a novel window for the study of alloy solidification and enables the unambiguous understanding of solidification processes in optically opaque, metallic alloys.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China

    TongMin Wang, JingJing Xu, Jun Li, ShengChu Liu & TingJu Li

  2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100039, China

    WanXia Huang

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  1. TongMin Wang
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  2. JingJing Xu
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  3. Jun Li
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  4. WanXia Huang
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  5. ShengChu Liu
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  6. TingJu Li
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Correspondence to TongMin Wang.

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Wang, T., Xu, J., Li, J. et al. In situ study on dendrite growth of metallic alloy by a synchrotron radiation imaging technology. Sci. China Technol. Sci. 53, 1278–1284 (2010). https://doi.org/10.1007/s11431-010-0087-3

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  • DOI: https://doi.org/10.1007/s11431-010-0087-3

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