Microstructural Characteristics and Mechanical Behaviors of AlCoCrFeNi High-Entropy Alloys at Ambient and Cryogenic Temperatures

Abstract:

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The phase-formation rule of high-entropy alloys (HEAs) with different microstructures is discussed, based on the atom-size difference in multicomponent alloys. For the single-phase HEA with the composition of AlCoCrFeNi, the yielding strengths and fracture strengths at cryogenic temperatures increase distinguishingly, compared to the corresponding mechanical properties at ambient temperature. However, the plasticity at 298 and 77 K changes very gently, while the fracture modes are intergranular and transgranular, respectively.

Info:

Periodical:

Edited by:

Rongming Wang, Ying Wu and Xiaofeng Wu

Pages:

419-425

DOI:

10.4028/www.scientific.net/MSF.688.419

Citation:

J. W. Qiao et al., "Microstructural Characteristics and Mechanical Behaviors of AlCoCrFeNi High-Entropy Alloys at Ambient and Cryogenic Temperatures", Materials Science Forum, Vol. 688, pp. 419-425, 2011

Online since:

June 2011

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Price:

$35.00

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