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Observe the temperature curve for solidification from high-speed video image

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Abstract

High-speed camera (HSC) is an advanced technology, which can be applied to observe the solid–liquid interface directly during solidification. It has never been reported that the temperature evolutions of solidification that was monitored by using cameras and their images. In this study, a new application of HSC technology was developed for the temperature evolution investigation. With this technology, the effects of the measured position, the thermocouple size and thermocouple sensitivity (delay) can be demonstrated in temperature measurement. It is important that the higher accuracy of temperature profiles can be obtained by the HSC technology. This method can be expected to analyze the temperature profiles of small melt-pool and subsequent rapid solidification process in additive manufacturing. In the end, we discussed the relationship of the recalescence rate and the solidification interface.

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Acknowledgements

This work was financially supported by the fund of the Foundation of Shaanxi Provincial Department of Education (No. 18JS050), the Science and Technology Program of Shaanxi Province (No. 2016KJXX-87) and the Natural Science Foundation of China (Nos. 51671151, 51971166). The authors also thanks to Di Zhang, Tao Zhang and Dandan Fan for help in this work.

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Authors and Affiliations

  1. The Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Xi’an Technological University, Xi’an, 710021, Shaanxi, People’s Republic of China

    Junfeng Xu, Ying Xiao & Zengyun Jian

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  1. Junfeng Xu
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  2. Ying Xiao
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  3. Zengyun Jian
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Correspondence to Junfeng Xu.

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Xu, J., Xiao, Y. & Jian, Z. Observe the temperature curve for solidification from high-speed video image. J Therm Anal Calorim 146, 2273–2277 (2021). https://doi.org/10.1007/s10973-020-10424-4

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  • DOI: https://doi.org/10.1007/s10973-020-10424-4

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