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Improved Castability of Directionally Solidified, Ni-Based Superalloy by the Liquid Metal Cooling Process

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Abstract

The hot-cracking susceptibility of directionally solidified, Ni-based superalloys obtained by different casting technologies, such as high-rate solidification (HRS) and liquid metal cooling (LMC), are compared in this article. Refined microstructures and the improved castability of LMC castings has been found. The improved hot-cracking resistance in castings using the LMC process can be attributed to the decreased length of the uncompensated zone and to the increased grain boundary cohesion in this zone.

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This work was financially supported by the National Basic Research Program (973 Program) of China under grant No. 2010CB631201 and National Natural Science Foundation of China under grant No. 51171193 and No. 51101160. The authors are grateful for these supports.

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Authors and Affiliations

  1. Superalloys Division, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P.R. China

    Chang Liu (Doctor), Kaiwen Li (Master), Jian Shen (Doctor), Jian Zhang (Professor) & Langhong Lou (Professor)

  2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P.R. China

    Jian Zhang (Professor)

Authors
  1. Chang Liu
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  2. Kaiwen Li
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  3. Jian Shen
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  4. Jian Zhang
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  5. Langhong Lou
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Corresponding author

Correspondence to Jian Zhang.

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Manuscript submitted June 30, 2011.

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Liu, C., Li, K., Shen, J. et al. Improved Castability of Directionally Solidified, Ni-Based Superalloy by the Liquid Metal Cooling Process. Metall Mater Trans A 43, 405–409 (2012). https://doi.org/10.1007/s11661-011-1023-2

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  • DOI: https://doi.org/10.1007/s11661-011-1023-2

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