Influence of Bridgman solidification on microstructures and magnetic behaviors of a non-equiatomic FeCoNiAlSi high-entropy alloy

doi:https://doi.org/10.1016/j.intermet.2015.08.014

Title: Influence of Bridgman solidification on microstructures and magnetic behaviors of a non-equiatomic FeCoNiAlSi high-entropy alloy

Abstract

The non-equiatomic FeCoNiAlSi alloy is prepared by the Bridgman solidification (BS) technique at different withdrawal velocities (V = 30, 100, and 200 μm/s). Various characterization techniques have been used to study the microstructure and crystal orientation. The morphological evolutions accompanying the crystal growth of the alloy prepared at different withdrawal velocities are nearly the same, from equiaxed grains to columnar crystals. The transition of coercivity is closely related to the local microstructure, while the saturation magnetization changes little at different sites. The coercivity can be significantly reduced from the equiaxed grain area to the columnar crystal area when the applied magnetic field direction is parallel to the crystal growth direction, no matter what is the withdrawal velocity. As a result, the alloy possesses magnetic anisotropy when the applied magnetic field is in different directions.

Authors:

Zuo, Tingting ^[1]; Yang, Xiao ^[1]; Liaw, Peter K. ^[2]; Zhang, Yong ^[1]

Univ. of Science and Technology Beijing, Beijing (China)
Univ. of Tennessee, Knoxville, TN (United States)

Publication Date:: 2015-09-07

Research Org.:: Univ. of Tennessee, Knoxville, TN (United States); Univ. of Illinois Urbana-Champaign, Champaign, IL (United States)

Sponsoring Org.:: USDOE Office of Fossil Energy (FE)

OSTI Identifier:: 1224524

Alternate Identifier(s):: OSTI ID: 1250570

Grant/Contract Number:: FE0011194; FE-0008855; FE-0011194; FE-0024054

Resource Type:: Journal Article: Accepted Manuscript

Journal Name:: Intermetallics

Additional Journal Information:: Journal Volume: 67; Journal Issue: C; Journal ID: ISSN 0966-9795

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; high entropy alloy; magnetic property; anisotropy; crystal growth

Citation Formats


                    Zuo, Tingting, Yang, Xiao, Liaw, Peter K., and Zhang, Yong. Influence of Bridgman solidification on microstructures and magnetic behaviors of a non-equiatomic FeCoNiAlSi high-entropy alloy.  United States: N. p., 2015. 
        Web.  doi:10.1016/j.intermet.2015.08.014.

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                    Zuo, Tingting, Yang, Xiao, Liaw, Peter K., & Zhang, Yong. Influence of Bridgman solidification on microstructures and magnetic behaviors of a non-equiatomic FeCoNiAlSi high-entropy alloy.  United States.  https://doi.org/10.1016/j.intermet.2015.08.014

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                    Zuo, Tingting, Yang, Xiao, Liaw, Peter K., and Zhang, Yong. Mon .  
        "Influence of Bridgman solidification on microstructures and magnetic behaviors of a non-equiatomic FeCoNiAlSi high-entropy alloy".  United States.  https://doi.org/10.1016/j.intermet.2015.08.014.  https://www.osti.gov/servlets/purl/1224524.

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@article{osti_1224524,

  title        = {Influence of Bridgman solidification on microstructures and magnetic behaviors of a non-equiatomic FeCoNiAlSi high-entropy alloy},

  author       = {Zuo, Tingting and Yang, Xiao and Liaw, Peter K. and Zhang, Yong},

  abstractNote = {The non-equiatomic FeCoNiAlSi alloy is prepared by the Bridgman solidification (BS) technique at different withdrawal velocities (V = 30, 100, and 200 μm/s). Various characterization techniques have been used to study the microstructure and crystal orientation. The morphological evolutions accompanying the crystal growth of the alloy prepared at different withdrawal velocities are nearly the same, from equiaxed grains to columnar crystals. The transition of coercivity is closely related to the local microstructure, while the saturation magnetization changes little at different sites. The coercivity can be significantly reduced from the equiaxed grain area to the columnar crystal area when the applied magnetic field direction is parallel to the crystal growth direction, no matter what is the withdrawal velocity. As a result, the alloy possesses magnetic anisotropy when the applied magnetic field is in different directions.},

  doi          = {10.1016/j.intermet.2015.08.014},

  url          = {https://www.osti.gov/biblio/1224524},
  journal      = {Intermetallics},

  issn         = {0966-9795},

  number       = C,

  volume       = 67,

  place        = {United States},

  year         = {2015},

  month        = {9}

}

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https://doi.org/10.1016/j.intermet.2015.08.014

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Works referencing / citing this record:

Science and technology in high-entropy alloys
journal, January 2018

Zhang, Weiran; Liaw, Peter K.; Zhang, Yong
Science China Materials, Vol. 61, Issue 1
https://doi.org/10.1007/s40843-017-9195-8

G-mode magnetic force microscopy: Separating magnetic and electrostatic interactions using big data analytics
journal, May 2016

Collins, Liam; Belianinov, Alex; Proksch, Roger
Applied Physics Letters, Vol. 108, Issue 19
https://doi.org/10.1063/1.4948601

High-entropy functional materials
journal, September 2018

Gao, Michael C.; Miracle, Daniel B.; Maurice, David
Journal of Materials Research, Vol. 33, Issue 19
https://doi.org/10.1557/jmr.2018.323

Effects of Short-Range Order on the Magnetic and Mechanical Properties of FeCoNi(AlSi)x High Entropy Alloys
journal, November 2017

Feng, Wenqiang; Qi, Yang; Wang, Shaoqing
Metals, Vol. 7, Issue 11
https://doi.org/10.3390/met7110482

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Title: Influence of Bridgman solidification on microstructures and magnetic behaviors of a non-equiatomic FeCoNiAlSi high-entropy alloy

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