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

Abstract

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.

Authors:
 [1]; ORCiD logo [2];  [3]; ORCiD logo [1]
  1. Univ. of Science and Technology, Beijing (China)
  2. National Energy Technology Lab. (NETL), Albany, OR (United States); AECOM, South Park, PA (United States)
  3. National Energy Technology Lab. (NETL), Albany, OR (United States)
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (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. doi:10.1016/j.jallcom.2018.11.116.
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
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.
@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 = {Mon Nov 12 00:00:00 EST 2018},
month = {Mon Nov 12 00:00:00 EST 2018}
}

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Cited by: 16 works
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Works referencing / citing this record: