Open Access
Evolution of Microstructure and Mechanical Properties of a CoCrFeMnNi High-Entropy Alloy during High-Pressure Torsion at Room and Cryogenic Temperatures
Тип публикации: Journal Article
Дата публикации: 2018-02-10
Metals and Alloys
General Materials Science
Краткое описание
High-pressure torsion (HPT) is applied to a face-centered cubic CoCrFeMnNi high-entropy alloy at 293 and 77 K. Processing by HPT at 293 K produced a nanostructure consisted of (sub)grains of ~50 nm after a rotation for 180°. The microstructure evolution is associated with intensive deformation-induced twinning, and substructure development resulted in a gradual microstructure refinement. Deformation at 77 K produces non-uniform structure composed of twinned and fragmented areas with higher dislocation density then after deformation at room temperature. The yield strength of the alloy increases with the angle of rotation at HPT at room temperature at the cost of reduced ductility. Cryogenic deformation results in higher strength in comparison with the room temperature HPT. The contribution of Hall–Petch hardening and substructure hardening in the strength of the alloy in different conditions is discussed.
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Zherebtsov S. et al. Evolution of Microstructure and Mechanical Properties of a CoCrFeMnNi High-Entropy Alloy during High-Pressure Torsion at Room and Cryogenic Temperatures // Metals. 2018. Vol. 8. No. 2. p. 123.
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Zherebtsov S., Stepanov N., Ivanisenko Y., Shaysultanov D., Yurchenko N., Klimova M., Salishchev G. Evolution of Microstructure and Mechanical Properties of a CoCrFeMnNi High-Entropy Alloy during High-Pressure Torsion at Room and Cryogenic Temperatures // Metals. 2018. Vol. 8. No. 2. p. 123.
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TY - JOUR
DO - 10.3390/met8020123
UR - https://doi.org/10.3390/met8020123
TI - Evolution of Microstructure and Mechanical Properties of a CoCrFeMnNi High-Entropy Alloy during High-Pressure Torsion at Room and Cryogenic Temperatures
T2 - Metals
AU - Zherebtsov, Sergey
AU - Stepanov, Nikita
AU - Ivanisenko, Yulia
AU - Shaysultanov, Dmitry
AU - Yurchenko, Nikita
AU - Klimova, Margarita
AU - Salishchev, Gennady
PY - 2018
DA - 2018/02/10
PB - MDPI
SP - 123
IS - 2
VL - 8
SN - 2075-4701
ER -
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@article{2018_Zherebtsov,
author = {Sergey Zherebtsov and Nikita Stepanov and Yulia Ivanisenko and Dmitry Shaysultanov and Nikita Yurchenko and Margarita Klimova and Gennady Salishchev},
title = {Evolution of Microstructure and Mechanical Properties of a CoCrFeMnNi High-Entropy Alloy during High-Pressure Torsion at Room and Cryogenic Temperatures},
journal = {Metals},
year = {2018},
volume = {8},
publisher = {MDPI},
month = {feb},
url = {https://doi.org/10.3390/met8020123},
number = {2},
pages = {123},
doi = {10.3390/met8020123}
}
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MLA
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Zherebtsov, Sergey, et al. “Evolution of Microstructure and Mechanical Properties of a CoCrFeMnNi High-Entropy Alloy during High-Pressure Torsion at Room and Cryogenic Temperatures.” Metals, vol. 8, no. 2, Feb. 2018, p. 123. https://doi.org/10.3390/met8020123.
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