Annealing effect for the Al0.3CoCrFeNi high-entropy alloy fibers

Li, Dongyue; Gao, Michael C.; Hawk, Jeffrey A.; Zhang, Yong

doi:10.1016/j.jallcom.2018.11.116

Title: Annealing effect for the Al_0.3CoCrFeNi high-entropy alloy fibers

Abstract

High-entropy alloy fibers with excellent performance potential are desired for functional applications. A previous study on the Al_0.3CoCrFeNi high-entropy fiber reported a tensile fracture strength of 1200 MPa and elongation of 8% at room temperature (Acta Mater. 123 (2017) 285). Here, the goal is to improve the ductility of Al_0.3CoCrFeNi high-entropy fiber by manipulating the microstructure through annealing. Al_0.3CoCrFeNi fibers at Φ1.0 mm and Φ1.6 mm diameters were annealed at 900 °C for 10 min, 30 min, 300 min and 720 min, respectively. The resulting microstructure is a fine face-centered cubic (FCC) structure with grain sizes less than ~3 μm, which were strengthened by dense NiAl-type ordered body-centered cubic (B2) precipitation. Finally, the fibers achieved a fracture strength greater than 900 MPa with an elongation of over 25% at room temperature.

Authors:

Li, Dongyue ^[1];

^[2]; Hawk, Jeffrey A. ^[3];

^[1]

Univ. of Science and Technology, Beijing (China)
National Energy Technology Lab. (NETL), Albany, OR (United States); AECOM, South Park, PA (United States)
National Energy Technology Lab. (NETL), Albany, OR (United States)

Publication Date:: 2018-11-12

Research Org.:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

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

OSTI Identifier:: 1532661

Alternate Identifier(s):: OSTI ID: 1636587

Grant/Contract Number:: FE0004000

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Alloys and Compounds

Additional Journal Information:: Journal Volume: 778; Journal Issue: C; Journal ID: ISSN 0925-8388

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Li, Dongyue, Gao, Michael C., Hawk, Jeffrey A., and Zhang, Yong. Annealing effect for the Al0.3CoCrFeNi high-entropy alloy fibers.  United States: N. p., 2018. 
Web.  https://doi.org/10.1016/j.jallcom.2018.11.116.

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                    Li, Dongyue, Gao, Michael C., Hawk, Jeffrey A., & Zhang, Yong. Annealing effect for the Al0.3CoCrFeNi high-entropy alloy fibers.  United States.  https://doi.org/10.1016/j.jallcom.2018.11.116

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                    Li, Dongyue, Gao, Michael C., Hawk, Jeffrey A., and Zhang, Yong. Mon .  
"Annealing effect for the Al0.3CoCrFeNi high-entropy alloy fibers".  United States.  https://doi.org/10.1016/j.jallcom.2018.11.116.  https://www.osti.gov/servlets/purl/1532661.

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@article{osti_1532661,

  title        = {Annealing effect for the Al0.3CoCrFeNi high-entropy alloy fibers},

  author       = {Li, Dongyue and Gao, Michael C. and Hawk, Jeffrey A. and Zhang, Yong},

  abstractNote = {High-entropy alloy fibers with excellent performance potential are desired for functional applications. A previous study on the Al0.3CoCrFeNi high-entropy fiber reported a tensile fracture strength of 1200 MPa and elongation of 8% at room temperature (Acta Mater. 123 (2017) 285). Here, the goal is to improve the ductility of Al0.3CoCrFeNi high-entropy fiber by manipulating the microstructure through annealing. Al0.3CoCrFeNi fibers at Φ1.0 mm and Φ1.6 mm diameters were annealed at 900 °C for 10 min, 30 min, 300 min and 720 min, respectively. The resulting microstructure is a fine face-centered cubic (FCC) structure with grain sizes less than ~3 μm, which were strengthened by dense NiAl-type ordered body-centered cubic (B2) precipitation. Finally, the fibers achieved a fracture strength greater than 900 MPa with an elongation of over 25% at room temperature.},

  doi          = {10.1016/j.jallcom.2018.11.116},

  journal      = {Journal of Alloys and Compounds},

  number       = C,

  volume       = 778,

  place        = {United States},

  year         = {2018},

  month        = {11}

}

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Works referencing / citing this record:

Evolution of microstructure and hardness in a dual-phase Al0.5CoCrFeNi high-entropy alloy with different grain sizes
journal, September 2019

Yang, Hao-Xue; Li, Jin-Shan; Guo, Tong
Rare Metals, Vol. 39, Issue 2
DOI: 10.1007/s12598-019-01320-4

Compositional Design of Soft Magnetic High Entropy Alloys by Minimizing Magnetostriction Coefficient in (Fe0.3Co0.5Ni0.2)100−x(Al1/3Si2/3)x System
journal, March 2019

Zhang, Yong; Zhang, Min; Li, Dongyue
Metals, Vol. 9, Issue 3
DOI: 10.3390/met9030382

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Title: Annealing effect for the Al0.3CoCrFeNi high-entropy alloy fibers

Abstract

Citation Formats

Evolution of microstructure and hardness in a dual-phase Al0.5CoCrFeNi high-entropy alloy with different grain sizes journal, September 2019

Compositional Design of Soft Magnetic High Entropy Alloys by Minimizing Magnetostriction Coefficient in (Fe0.3Co0.5Ni0.2)100−x(Al1/3Si2/3)x System journal, March 2019

Title: Annealing effect for the Al_0.3CoCrFeNi high-entropy alloy fibers

Evolution of microstructure and hardness in a dual-phase Al0.5CoCrFeNi high-entropy alloy with different grain sizes
journal, September 2019

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journal, March 2019