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Aging Time-Microstructure-Mechanical Property Correlation of a Ni-17Mo-7Cr-Based Superalloy Subjected to Simulated Heat-Affected Zone Thermal Treatment

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Abstract

The work prepared a typical Ni-17Mo-7Cr (wt.%)-based superalloy and investigated the effect of aging time on microstructure and mechanical properties of the alloy subjected to simulated heat-affected zone (HAZ) thermal treatment. After aging, many fine MoC particles are precipitated at the grain boundaries as well as in the grains. Regions with lamellar-like structures become larger, and many fine MoC particles are produced around them. The microstructural degradation caused by aging has limited influence on the alloy’s high-temperature (800 °C) mechanical properties. After exposure to the HAZ simulation, the alloy can still maintain excellent mechanical properties when aged at 800 °C for different time, similar to the alloy that did not undergo the HAZ simulation.

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Acknowledgments

The work was supported by the National Natural Science Foundation of China (Grant Nos. 51405439 and 51475426) and Natural Science Foundation of Zhejiang Province (Grant Nos. LY17E050019 and LQ16E060004).

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Authors and Affiliations

  1. Institute of Process Equipment and Control Engineering, Zhejiang University of Technology, Hangzhou, 310014, People’s Republic of China

    Yanming He, Jianguo Yang & Zengliang Gao

  2. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, People’s Republic of China

    Shuangjian Chen

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  1. Yanming He
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  2. Jianguo Yang
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  3. Shuangjian Chen
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  4. Zengliang Gao
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Correspondence to Yanming He or Jianguo Yang.

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He, Y., Yang, J., Chen, S. et al. Aging Time-Microstructure-Mechanical Property Correlation of a Ni-17Mo-7Cr-Based Superalloy Subjected to Simulated Heat-Affected Zone Thermal Treatment. J. of Materi Eng and Perform 26, 4556–4566 (2017). https://doi.org/10.1007/s11665-017-2866-5

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  • DOI: https://doi.org/10.1007/s11665-017-2866-5

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