Cryogenic strength improvement by utilizing room-temperature deformation twinning in a partially recrystallized VCrMnFeCoNi high-entropy alloy

Y. H. Jo; S. Jung; W. M. Choi; S. S. Sohn; H. S. Kim; B. J. Lee; N. J. Kim; S. Lee

doi:10.1038/ncomms15719

Nature Communications (Jun 2017)

Cryogenic strength improvement by utilizing room-temperature deformation twinning in a partially recrystallized VCrMnFeCoNi high-entropy alloy

Y. H. Jo,
S. Jung,
W. M. Choi,
S. S. Sohn,
H. S. Kim,
B. J. Lee,
N. J. Kim,
S. Lee

Affiliations

Y. H. Jo: Center for High Entropy Alloys, Pohang University of Science and Technology
S. Jung: Center for High Entropy Alloys, Pohang University of Science and Technology
W. M. Choi: Center for High Entropy Alloys, Pohang University of Science and Technology
S. S. Sohn: Center for High Entropy Alloys, Pohang University of Science and Technology
H. S. Kim: Center for High Entropy Alloys, Pohang University of Science and Technology
B. J. Lee: Center for High Entropy Alloys, Pohang University of Science and Technology
N. J. Kim: Graduate Institute of Ferrous Technology, Pohang University of Science and Technology
S. Lee: Center for High Entropy Alloys, Pohang University of Science and Technology

DOI: https://doi.org/10.1038/ncomms15719
Journal volume & issue: Vol. 8, no. 1
pp. 1 – 8

Abstract

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CrMnFeCoNi high entropy alloys have high fracture toughness at cryogenic temperatures due to deformation twinning but twinning is not active in this alloy at room temperature. Here authors optimize composition and thermomechanical treatments to introduce non-recrystallized grains, producing high yield strength while maintaining good ductility.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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