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Strain rate sensitivity of nanoindentation creep in an AlCoCrFeNi high-entropy alloy

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Abstract

Creep behaviors of an AlCoCrFeNi high-entropy alloy with the body-centered cubic structure were investigated by nanoindentation. The enhanced strain gradient induced by higher strain rate leads to decreased strain rate sensitivity during creep process. The present alloy exhibits excellent creep resistance, mainly due to its large entropy of mixing and highly distorted lattice structure.

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Acknowledgments

Z. H. W. would like to acknowledge the National Natural Science Foundation of China (No. 11390362). J. W. Q. would like to acknowledge the financial support of the Program for the Innovative Talents of Higher Learning Institutions of Shanxi (2013), the Youth Natural Science Foundation of Shanxi Province, China (No. 2015021005), and the opening project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology), and the opening project number is KFJJ15-19 M.

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Authors and Affiliations

  1. Shanxi Key Laboratory of Material Strength and Structural Impact, Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China

    Z. M. Jiao, Z. H. Wang & J. W. Qiao

  2. Laboratory of Applied Physics and Mechanics of Advanced Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China

    R. F. Wu & J. W. Qiao

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  1. Z. M. Jiao
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  2. Z. H. Wang
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  3. R. F. Wu
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  4. J. W. Qiao
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Correspondence to Z. H. Wang or J. W. Qiao.

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Jiao, Z.M., Wang, Z.H., Wu, R.F. et al. Strain rate sensitivity of nanoindentation creep in an AlCoCrFeNi high-entropy alloy. Appl. Phys. A 122, 794 (2016). https://doi.org/10.1007/s00339-016-0339-6

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  • DOI: https://doi.org/10.1007/s00339-016-0339-6

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