Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Enhanced mechanical properties of carbon-doped FeNiMnAlCr high entropy alloy via hot-rolling

Abstract

This work demonstrates an improvement in the mechanical performance of the high entropy alloy Fe40.4Ni11.3Mn34.8Al7.5Cr6 containing 1.1 at. % carbon (CHEA) by hot-rolling followed by annealing at 1323 K. The microstructure was examined using scanning electron microscopy, electron backscatter diffraction, X-ray diffraction, and transmission electron microscopy. Room-temperature tensile tests were used to assess the alloy's mechanical properties. The presence of dense dislocation walls indicate that the alloy has not fully recrystallized and, moreover, the deformation substructure and the large fraction of Σ3 twin boundaries contribute to the high room temperature yield strength (~523 MPa). Despite the presence of substantial dislocation density, the annealed, hot-rolled CHEA displays an improvement in elongation to fracture (~33%) compared to the negligible ductility (< 2%) observed for the alloy after it has been simply annealed. Finally, the present work shows that hot rolling can produce good strength and ductility in the alloy while establishing the processing conditions necessary for the large-scale manufacture and utilization of its remarkable properties.

Authors:
 [1];  [1];  [1];  [1]
+ Show Author Affiliations
  1. Dartmouth College, Hanover, NH (United States)
Publication Date:
Research Org.:
Dartmouth College, Hanover, NH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1593727
Alternate Identifier(s):
OSTI ID: 1573302
Grant/Contract Number:  
SC0018962
Resource Type:
Accepted Manuscript
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 158; Journal Issue: C; Journal ID: ISSN 1044-5803
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; high entropy alloys; hot-rolling; dislocations

Citation Formats

Wu, Margaret, Yang, Chao, Kuijer, Michael, and Baker, Ian. Enhanced mechanical properties of carbon-doped FeNiMnAlCr high entropy alloy via hot-rolling. United States: N. p., 2019. Web. doi:10.1016/j.matchar.2019.109983.
Copy to clipboard
Wu, Margaret, Yang, Chao, Kuijer, Michael, & Baker, Ian. Enhanced mechanical properties of carbon-doped FeNiMnAlCr high entropy alloy via hot-rolling. United States. https://doi.org/10.1016/j.matchar.2019.109983
Copy to clipboard
Wu, Margaret, Yang, Chao, Kuijer, Michael, and Baker, Ian. Thu . "Enhanced mechanical properties of carbon-doped FeNiMnAlCr high entropy alloy via hot-rolling". United States. https://doi.org/10.1016/j.matchar.2019.109983. https://www.osti.gov/servlets/purl/1593727.
Copy to clipboard
@article{osti_1593727,
title = {Enhanced mechanical properties of carbon-doped FeNiMnAlCr high entropy alloy via hot-rolling},
author = {Wu, Margaret and Yang, Chao and Kuijer, Michael and Baker, Ian},
abstractNote = {This work demonstrates an improvement in the mechanical performance of the high entropy alloy Fe40.4Ni11.3Mn34.8Al7.5Cr6 containing 1.1 at. % carbon (CHEA) by hot-rolling followed by annealing at 1323 K. The microstructure was examined using scanning electron microscopy, electron backscatter diffraction, X-ray diffraction, and transmission electron microscopy. Room-temperature tensile tests were used to assess the alloy's mechanical properties. The presence of dense dislocation walls indicate that the alloy has not fully recrystallized and, moreover, the deformation substructure and the large fraction of Σ3 twin boundaries contribute to the high room temperature yield strength (~523 MPa). Despite the presence of substantial dislocation density, the annealed, hot-rolled CHEA displays an improvement in elongation to fracture (~33%) compared to the negligible ductility (< 2%) observed for the alloy after it has been simply annealed. Finally, the present work shows that hot rolling can produce good strength and ductility in the alloy while establishing the processing conditions necessary for the large-scale manufacture and utilization of its remarkable properties.},
doi = {10.1016/j.matchar.2019.109983},
journal = {Materials Characterization},
number = C,
volume = 158,
place = {United States},
year = {Thu Oct 31 00:00:00 EDT 2019},
month = {Thu Oct 31 00:00:00 EDT 2019}
}
Copy to clipboard
Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.matchar.2019.109983
Copyright Statement
Other availability
Search WorldCat Search WorldCat to find libraries that may hold this journal
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: BSE SEM image of the hot-rolled CHEA after annealing at 1323 K for 24 h. The direction of hot-rolling is indicated and labelled.
All figures and tables (8 total)
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Works referenced in this record:

Interstitial strengthening of a f.c.c. FeNiMnAlCr high entropy alloy
journal, October 2016

The effects of carbon on the phase stability and mechanical properties of heat-treated FeNiMnCrAl high entropy alloys
journal, March 2019

Recrystallization and grain growth in hot rolling
journal, March 1979

Effect of hot work on the properties of Waspaloy
journal, September 1970

  • Donachie, M. J.; Pinkowish, A. A.; Danesi, W. P.
  • Metallurgical and Materials Transactions B, Vol. 1, Issue 9
  • DOI: 10.1007/BF03038394

Role of annealing twins for grain refinement in controlled rolling of low carbon microalloyed steel.
journal, January 1983

Energy of slip transmission and nucleation at grain boundaries
journal, January 2011

Effects of recrystallization annealing temperature on carbide precipitation, microstructure, and mechanical properties in Fe–18Mn–0.6C–1.5Al TWIP steel
journal, January 2010

  • Kang, Singon; Jung, Yeon-Seung; Jun, Joong-Hwan
  • Materials Science and Engineering: A, Vol. 527, Issue 3
  • DOI: 10.1016/j.msea.2009.08.048

Influence of Carbon Additions on the Dynamic Recrystallization of High Purity α-Iron
journal, January 2002

  • Desrayaud, Christophe; Girard, Séverine; Coze, Jean Le
  • MATERIALS TRANSACTIONS, Vol. 43, Issue 2
  • DOI: 10.2320/matertrans.43.135
    Sort by:
    [ × clear filter / sort ]

    Figures / Tables found in this record:

    Figure 1 (p. 17)figure
    Figure 2 (p. 18)figure
    Figure 3 (p. 19)figure
    Figure 4 (p. 20)figure
    Figure 5 (p. 21)figure
    Figure 6 (p. 22)figure
    Figure 7 (p. 23)figure
    Table 1 (p. 24)table
      [ × clear filter / sort ]
      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

      Similar Records in DOE PAGES and OSTI.GOV collections: