Microstructural characteristics and mechanical behaviors of AlCoCrFeNi high-entropy alloys at ambient and cryogenic temperatures

J. W. Qiao, S. G. Ma, E-Wen Huang, C. P. Chuang, P. K. Liaw, Y. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

57 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationNano-Scale and Amorphous Materials
Pages419-425
Number of pages7
DOIs
StatePublished - 11 Jul 2011
Event11th IUMRS International Conference in Asia, IUMRS-ICA2010 - Qingdao, China
Duration: 25 Sep 201028 Sep 2010

Publication series

NameMaterials Science Forum
Volume688
ISSN (Print)0255-5476

Conference

Conference11th IUMRS International Conference in Asia, IUMRS-ICA2010
CountryChina
CityQingdao
Period25/09/1028/09/10

Keywords

  • High-entropy alloy
  • Low temperature
  • Mechanical property
  • Plastic deformation

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    Qiao, J. W., Ma, S. G., Huang, E-W., Chuang, C. P., Liaw, P. K., & Zhang, Y. (2011). Microstructural characteristics and mechanical behaviors of AlCoCrFeNi high-entropy alloys at ambient and cryogenic temperatures. In Nano-Scale and Amorphous Materials (pp. 419-425). (Materials Science Forum; Vol. 688). https://doi.org/10.4028/www.scientific.net/MSF.688.419