Overcoming the strength-ductility trade-off in refractory medium-entropy alloys via controlled B2 ordering

N. Yurchenko; E. Panina; A. Tojibaev; S. Zherebtsov; N. Stepanov

doi:10.1080/21663831.2022.2109442

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Overcoming the strength-ductility trade-off in refractory medium-entropy alloys via controlled B2 ordering

Original Reports | 更新时间：2026-08-19

- Overcoming the strength-ductility trade-off in refractory medium-entropy alloys via controlled B2 ordering
- Materials Research Letters Vol. 10, Issue 12, Pages: 813-823(2022)
- 作者机构：
  
  Laboratory of Bulk Nanostructured Materials Belgorod National Research University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2109442
  CLC：
- Online First：08 August 2022，
  
  Published：2022
- 稿件说明：
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N. Yurchenko, E. Panina, A. Tojibaev, et al. Overcoming the strength-ductility trade-off in refractory medium-entropy alloys via controlled B2 ordering[J]. Materials Research Letters, 2022, 10(12): 813-823.
DOI：

N. Yurchenko, E. Panina, A. Tojibaev, et al. Overcoming the strength-ductility trade-off in refractory medium-entropy alloys via controlled B2 ordering[J]. Materials Research Letters, 2022, 10(12): 813-823. DOI： 10.1080/21663831.2022.2109442.

摘要

Abstract

Herein

we showed that controlled additions of Al

which provided a certain degree of B2 ordering

resulted in a ∼ 37%-enhancement of both yield strength and uniform elongation in Al

(NbTiZr)

100-x

(

= 0; 2.5; 5; 7.5 at.%) refractory medium-entropy alloys. The improvement of properties stemmed from the solid solution and short-range order strengthening

as well as from the alteration in a character of dislocation glide. The B2 ordering caused the formation of multiple dislocation bands and the activation of cross-slip

which improved the macroscopic stability of plastic flow and extended the strengthening stage

thereby postponing necking.

关键词

Keywords

references

Soni V, Senkov ON, Couzinie J-P, et al. Phase stability and microstructure evolution in a ductile refractory high entropy alloy Al10Nb15Ta5Ti30Zr40. Materialia [Internet]. 2020;9:100569. (Open in a new window)Web of Science ®(Open in a new window)Google Scholar

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