A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Original languageEnglish
Pages (from-to)340-346
Journal / PublicationMaterials Research Letters
Volume7
Issue number8
Online published2 May 2019
Publication statusPublished - 2019

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  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85071429739&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(a3bef648-dfa5-479c-91d8-e970b0c79c5c).html

Abstract

We conducted systematically tensile tests with a series of Nb-based equiatomic alloys with single-phase, body-centered-cubic (bcc) structure. By subtracting all possible strengthening contributions, the intrinsic strength (or lattice friction stress) of each alloy was extracted. It was found that lattice friction stress scaled linearly with the lattice distortion in these Nb-based alloys. A simple model was developed to interpret this result. Strengthening effects of lattice distortion and dislocation core width between bcc Nb-based and face-centered-cubic (fcc) Ni-based equiatomic alloys were also compared. It was demonstrated that the enhanced strength in high-entropy alloys was attributable to the lattice distortion.

Research Area(s)

  • High-entropy alloy, Peierls stress, lattice distortion, lattice friction stress, SINGLE-PHASE, MECHANICAL-PROPERTIES, DEFORMATION, SIZE, MICROSTRUCTURE, STABILITY, BEHAVIOR

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Publication fingerprints text

100
Lattice Distortion Engineering
100
High-Entropy Alloys Engineering
100
High Entropy Alloys Material Science
50
Body-Centered Cubic Engineering
25
Simple Model Engineering
25
Tensile Test Engineering
25
Face-Centered Cubic Engineering
25
Strengthening Effec... Engineering
25
Dislocation Core Engineering
25
Centered Cubic Stru... Engineering
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[ RIS ] [ BibTeX ]
A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys. / Zhao, Y. Y.; Lei, Z. F.; Lu, Z. P. et al.
In: Materials Research Letters, Vol. 7, No. 8, 2019, p. 340-346.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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