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On Synergistic Effects of Hierarchical γ′ Precipitates and Discontinuous Plastic Flow in a Ni-based Single Crystal Superalloy with an [001] Orientation

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Abstract

A discontinuous plastic flow is detected in a single-crystal superalloy with an [001] orientation during tensile tests over a wide temperature range. Results reveals that the synergistic impact of normal γ′ precipitates and nanoscale γ′ precipitates in γ matrix on the dislocations motion is the root of the serrated flow.

Graphical Abstract

Hierarchical gamma prime precipitates trigger discontinuous plastic flow in Ni-based single crystal superalloy with [001] orientation

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Acknowledgements

The authors gratefully acknowledge the financial support by Natural Science Fund Project of Liaoning Province under Grant 2023-BS-186, Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS)

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Authors and Affiliations

  1. School of Mechanical Engineering, Liaoning Petrochemical University, Fushun, 113001, China

    Yunling Du

  2. Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China

    Yanhong Yang, Xinguang Wang, Chuanyong Cui, Jinguo Li, Yizhou Zhou & Xiaofeng Sun

  3. Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, MA, 01003-2210, USA

    Shuai Guan

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  1. Yunling Du
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  2. Yanhong Yang
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  5. Chuanyong Cui
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  7. Yizhou Zhou
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Correspondence to Yunling Du, Yanhong Yang or Xinguang Wang.

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Du, Y., Yang, Y., Guan, S. et al. On Synergistic Effects of Hierarchical γ′ Precipitates and Discontinuous Plastic Flow in a Ni-based Single Crystal Superalloy with an [001] Orientation. Met. Mater. Int. 30, 253–257 (2024). https://doi.org/10.1007/s12540-023-01491-x

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