Abstract
A modified HR3C austenitic steel has been designed by optimizing the chemical composition. Compared with a commercial HR3C alloy, the modified steel has comparable oxidation resistance, yield strength, and plasticity, but higher creep rupture strength and impact toughness after long-term thermal exposure. The results suggest that the modified alloy is a promising candidate for the applications of ultra-supercritical power plants operating beyond 650 °C.
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The authors gratefully acknowledge the financial support from the China Huaneng Group (ZD-15-HJK02), and thank Professor C.Y. CUI (The Institute of Metal Research, the Chinese Academy of Sciences) for the fabrication of alloys, and Dr. J. LI (The Instrumental Analysis Center of Xi’an Jiaotong University) for assistance in conducting the TEM experiments.
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Manuscript submitted August 25, 2017.
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Zhu, C.Z., Yuan, Y., Zhang, P. et al. A Modified HR3C Austenitic Heat-Resistant Steel for Ultra-supercritical Power Plants Applications Beyond 650 °C. Metall Mater Trans A 49, 434–438 (2018). https://doi.org/10.1007/s11661-017-4424-z
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DOI: https://doi.org/10.1007/s11661-017-4424-z