Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy

Deep Choudhuri; Shivakant Shukla; Bharat Gwalani; Rajarshi Banerjee; Rajiv S. Mishra

doi:10.1080/21663831.2018.1553212

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Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy

Original Report | 更新时间：2026-08-19

- Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy
- Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy
- 材料研究快报（英文） 2019年7卷第1期页码：40-46
- 作者机构：
  
  1. Advanced Materials and Manufacturing Processes Institute University of North Texas Denton TX USA
  2. Department of Materials Science and Engineering University of North Texas Denton
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1553212
  中图分类号：
- 网络首发：2018-12-05，
  
  纸质出版：2019
- 稿件说明：
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Deep Choudhuri, Shivakant Shukla, Bharat Gwalani, 等. Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy[J]. 材料研究快报（英文）, 2019,7(1):40-46.

Deep Choudhuri, Shivakant Shukla, Bharat Gwalani, et al. Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy[J]. Materials Research Letters, 2019, 7(1): 40-46.
Deep Choudhuri, Shivakant Shukla, Bharat Gwalani, 等. Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy[J]. 材料研究快报（英文）, 2019,7(1):40-46. DOI： 10.1080/21663831.2018.1553212.

Deep Choudhuri, Shivakant Shukla, Bharat Gwalani, et al. Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy[J]. Materials Research Letters, 2019, 7(1): 40-46. DOI： 10.1080/21663831.2018.1553212.

摘要

Abstract

BSTRACTOrdered B2 precipitates typically nucleate at the grains-boundaries of

fcc

-based high entropy alloys. Here

we report a novel mixed-mode coupled displacive-diffusional transformation resulting in homogeneously distributed intra-granular B2 precipitates within the

fcc

matrix. Severe plastic deformation forms compositionally invariant

metastable distorted

fcc

structures

resembling hexagon-like templates

at the deformation twin-boundaries. These shear-induced hexagon-like templates correspond to the symmetry of the {111}

bcc

planes

and act as sites for B2 nucleation

establishing the

fcc-bcc

Kurdjumov–Sachs (KS) orientation relationship. However

the composition of these B2 precipitates is far-from-equilibrium. Subsequent isothermal annealing causes solute partitioning driving the composition of the B2 precipitates towards equilibrium.

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