Jump to main content
Jump to site search

Issue 4, 2018
Previous Article Next Article

Preparing bulk ultrafine-microstructure high-entropy alloys via direct solidification

Author affiliations

Abstract

In the past three decades, nanostructured (NS) and ultrafine-microstructure (UFM) materials have received extensive attention due to their excellent mechanical properties such as high strength. However, preparing low-cost and bulk NS and UFM materials remains to be a challenge, which limits their industrial applications. Here, we report a new strategy to prepare bulk UFM alloys via the direct solidification of high-entropy alloys (HEAs). As a proof of concept, we designed AlCoCrxFeNi (1.8 ≤ x ≤ 2.0) HEAs and achieved a complete UFM in bulk materials. The compositional requirements for obtaining the formation of the UFM are highly demanding, necessitating the coupling of near eutectic alloy composition and the high temperature decomposition of supersaturated primary and secondary phases. Our strategy provides a low-cost and highly efficient method to prepare bulk UFM alloys, with great potential to accelerate the engineering application of these materials.

Graphical abstract: Preparing bulk ultrafine-microstructure high-entropy alloys via direct solidification

Back to tab navigation

Publication details

The article was received on 29 Sep 2017, accepted on 18 Dec 2017 and first published on 19 Dec 2017


Article type: Paper
DOI: 10.1039/C7NR07281C
Citation: Nanoscale, 2018,10, 1912-1919
  •   Request permissions

    Preparing bulk ultrafine-microstructure high-entropy alloys via direct solidification

    Y. Lu, X. Gao, Y. Dong, T. Wang, H. Chen, H. Mao<small xmlns="http://www.rsc.org/schema/rscart38"> <sup>b</sup> </small>, Y. Zhao, H. Jiang, Z. Cao, T. Li and S. Guo, Nanoscale, 2018, 10, 1912
    DOI: 10.1039/C7NR07281C

Search articles by author

Spotlight

Advertisements