Enhanced strength and ductility in a friction stir processing engineered dual phase high entropy alloy

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This article presents a strong and ductile non-equiatomic high-entropy alloy obtained after friction stir processing.

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7 p.

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Nene, Saurabh S.; Liu, Kaimiao; Frank, Michael; Mishra, Rajiv; Brennan, R. E.; Cho, K. C. et al. November 23, 2017.

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This article presents a strong and ductile non-equiatomic high-entropy alloy obtained after friction stir processing.

Physical Description

7 p.

Notes

Abstract: The potential of high-entropy alloys (HEAs) to exhibit an extraordinary combination of properties by
shifting the compositional regime from the corners towards the centers of phase diagrams has led
to worldwide attention by material scientists. Here we present a strong and ductile non-equiatomic
HEA obtained after friction stir processing (FSP). A transformation-induced plasticity (TRIP) assisted
HEA with composition Fe50Mn30Co10Cr10 (at.%) was severely deformed by FSP and evaluated for its
microstructure-mechanical property relationship. The FSP-engineered microstructure of the TRIP HEA
exhibited a substantially smaller grain size, and optimized fractions of face-centered cubic (f.c.c., γ)
and hexagonal close-packed (h.c.p., ε) phases, as compared to the as-homogenized reference material.
This results in synergistic strengthening via TRIP, grain boundary strengthening, and effective strain
partitioning between the γ and ε phases during deformation, thus leading to enhanced strength and
ductility of the TRIP-assisted dual-phase HEA engineered via FSP.

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  • Scientific Reports, 2017. London, UK: Nature Publishing Group

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  • Publication Title: Scientific Reports
  • Volume: 7
  • Pages: 1-7
  • Peer Reviewed: Yes

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UNT Scholarly Works

Materials from the UNT community's research, creative, and scholarly activities and UNT's Open Access Repository. Access to some items in this collection may be restricted.

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  • October 19, 2017

Accepted Date

  • November 14, 2017

Creation Date

  • November 23, 2017

Added to The UNT Digital Library

  • Dec. 14, 2017, 11:26 a.m.

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Nene, Saurabh S.; Liu, Kaimiao; Frank, Michael; Mishra, Rajiv; Brennan, R. E.; Cho, K. C. et al. Enhanced strength and ductility in a friction stir processing engineered dual phase high entropy alloy, article, November 23, 2017; London, United Kingdom. (digital.library.unt.edu/ark:/67531/metadc1049692/: accessed June 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Engineering.