Abstract
A new method to determine directly the solid fraction using the cooling curve was proposed for solidification of undercooled melts. Then, to construct three different baselines, a sudden function ξ α (x) is introduced. In terms of the ξ α (x) function, accordingly, the solid fractions during solidification of Ni-3.3 wt pct B, Al-7 wt pct Si, Al-14 wt pct Cu, and Fe-4.56 wt pct Ni alloys were predicted. The predictions of the primary, the regular lamellar eutectic, the anomalous eutectic, and the peritectic phases from cooling curves of the solidified samples coincide with the results of measurement or the available methods.
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Notes
The cooling curves without any transformation or latent heat release.
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Acknowledgments
The authors are grateful for the financial support of the Free Research Fund, State Key Laboratory of Solidification Processing (Grant Nos. 09-QZ-2008 and 24-TZ-2009), the 111 project (B08040), the Natural Science Foundation of China (Grant Nos. 50771084, 50901059, 51071127), the Huo Yingdong Yong Teacher Fund (Grant No. 111502), and the National Basic Research Program of China (973 Program) (Grant No. 2011CB610403). One of the authors (Junfeng Xu) also appreciates Master J.W. Xu and C.Y. Hu for their help with the experiments.
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Manuscript submitted June 27, 2011.
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Xu, J., Liu, F., Xu, X. et al. Determination of Solid Fraction from Cooling Curve. Metall Mater Trans A 43, 1268–1276 (2012). https://doi.org/10.1007/s11661-011-0948-9
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DOI: https://doi.org/10.1007/s11661-011-0948-9