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Effects of liquid structure transition on solidification by the Newton thermal analysis method

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Abstract

This paper is to explore the effects of the liquid structure transition (LST) on the solidification kinetics of Sn-30 wt% Sb alloy by the Newton thermal analysis (NTA) method and the solidified microstructure analysis. Influence of the cooling rate on solidification behavior and microstructure was also concerned. With a self-designed sand mold, the cooling curves of five points were collected automatically in the process of solidification by a HYDRA. In the case of the liquid structure transition and a faster cooling rate, the modification melt treatment will lead to a higher undercooling of nucleation and an increased solidification latent heat in central part of solidifying castings, then the eventual grain size was evidently refined.

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Acknowledgements

The authors are very grateful to the National Natural Science Foundation of China (Grant No. 50571033) and the Natural Science Foundation of Anhui Province (Grant Nos. 070416234 and 070414178) for financial support.

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Authors and Affiliations

  1. Liquid/Solid Metal Processing Institute, School of Materials Science & Engineering, Hefei University of Technology, Hefei, 230009, People’s Republic of China

    Ming Yi Xie, Xian Fen Li, Yu Ting Zhou & Fang Qiu Zu

  2. CSR Qishuyan Institute Co., Ltd., Changzhou, 213011, People’s Republic of China

    Ming Yi Xie, Gui Bao Xu & Yu Ting Zhou

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  1. Ming Yi Xie
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  2. Xian Fen Li
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  3. Gui Bao Xu
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  4. Yu Ting Zhou
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  5. Fang Qiu Zu
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Correspondence to Ming Yi Xie or Xian Fen Li.

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Xie, M.Y., Li, X.F., Xu, G.B. et al. Effects of liquid structure transition on solidification by the Newton thermal analysis method. Appl. Phys. A 113, 431–437 (2013). https://doi.org/10.1007/s00339-012-7539-5

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  • DOI: https://doi.org/10.1007/s00339-012-7539-5

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