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Creep Mechanisms of a Ni-Co-Based-Wrought Superalloy with Low Stacking Fault Energy

  • Symposium: Multiscale Microstructure, Mechanics and Prognosis of High Temperature Alloys
  • Published:
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Abstract

In order to study the influences of stress and temperature on the creep deformation mechanisms of a newly developed Ni-Co-based superalloy with low stacking fault energy, creep experiments were carried out under a stress range of 345 to 840 MPa and a temperature range of 923 K to 1088 K (650 °C to 815 °C). The mechanisms operated under the various creep conditions were identified and the reasons for their transformation were well discussed. A deformation mechanism map under different creep conditions was summarized, which provides a qualitative representation of the operative creep mechanisms as a function of stress and temperature.

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Acknowledgments

This work was partly supported by the High Technology Research and Development Program of China (No. 2014AA041701) and the National Natural Science Foundation of China (NSFC) under Grant Nos. 51171179, 51271174, 51331005, and 11332010.

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Authors and Affiliations

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

    Chenggang Tian (Doctor), Ling Xu (Doctor), Chuanyong Cui (Professor) & Xiaofeng Sun (Professor)

Authors
  1. Chenggang Tian
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  2. Ling Xu
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  3. Chuanyong Cui
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  4. Xiaofeng Sun
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Correspondence to Chuanyong Cui.

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Manuscript submitted November 15, 2014.

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Tian, C., Xu, L., Cui, C. et al. Creep Mechanisms of a Ni-Co-Based-Wrought Superalloy with Low Stacking Fault Energy. Metall Mater Trans A 46, 4601–4609 (2015). https://doi.org/10.1007/s11661-015-2818-3

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  • DOI: https://doi.org/10.1007/s11661-015-2818-3

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