4.6 Article

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

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SPRINGER HEIDELBERG
DOI: 10.1007/s00339-016-0339-6

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  1. National Natural Science Foundation of China [11390362]
  2. Program for the Innovative Talents of Higher Learning Institutions of Shanxi
  3. Youth Natural Science Foundation of Shanxi Province, China [2015021005]
  4. State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology) [KFJJ15-19 M]

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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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