Excellent strength-ductility combination of multi-layered sheets composed of high-strength V10Cr10Fe50Co30 high entropy alloy and 304 austenitic stainless steel

Dong Geun Kim; Yong Hee Jo; Taejin Song; Hyoung Seop Kim; Byeong Joo Lee; Seok Su Sohn; Sunghak Lee

doi:10.1016/j.msea.2021.141727

Excellent strength-ductility combination of multi-layered sheets composed of high-strength V₁₀Cr₁₀Fe₅₀Co₃₀ high entropy alloy and 304 austenitic stainless steel

Dong Geun Kim
, Yong Hee Jo
, Taejin Song
, Hyoung Seop Kim
, Byeong Joo Lee
, Seok Su Sohn^*
, Sunghak Lee

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

When a high-entropy alloy (HEA) and an austenitic stainless steel (STS) are combined to produce a multi-layered sheet (MLS), the synergic effects of maximized body-centered-cubic(BCC) transformation-induced plasticity (TRIP) occurring in both HEA and STS on excellent tensile properties are expected. In this study, the tensile properties of STS/HEA/STS MLS, fabricated by hot-roll bonding, were compared with those of monolithic HEA and STS sheets. Both the HEA and STS layers of the MLS consisted of FCC grains, while some BCC grains occurred mostly in the HEA layer. The measured tensile properties were higher than the calculated values based on the rule of mixtures, and showed very high levels of tensile strength (803 and 1774 MPa at 25 °C and −196 °C, respectively) with sufficient elongation (44% and 72%, respectively). This result was attributed to the robust TRIP mechanism occurring step-by-step in the HEA and STS layers, along with the accommodation of the strain gradient near the strongly bonded HEA/STS interface. The step-by-step TRIP played a leading role in tuning the enormous BCC-TRIP occurring in both the HEA and STS layers, while taking complete advantage of the high strength–ductility balance.

Original language	English
Article number	141727
Journal	Materials Science and Engineering A
Volume	823
DOIs	https://doi.org/10.1016/j.msea.2021.141727
Publication status	Published - 2021 Aug 17

Bibliographical note

Funding Information:
This work was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT ( NRF-2016M3D1A1023383 ), the Korea Institute for Advancement of Technology (KIAT) grant funded by the Korea Government ( MOTIE ) ( P0002019 , The Competency Development Program for Industry Specialist), and a Korea University Grant (Dr. Seok Su Sohn).

Publisher Copyright:
© 2021 Elsevier B.V.

Keywords

High entropy alloy (HEA)
Multi-layered sheet (MLS)
Stainless steel
Transformation-induced plasticity (TRIP)

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.msea.2021.141727

Cite this

@article{4c773c777e4f4f71a4d9c2e669c150c4,

title = "Excellent strength-ductility combination of multi-layered sheets composed of high-strength V10Cr10Fe50Co30 high entropy alloy and 304 austenitic stainless steel",

abstract = "When a high-entropy alloy (HEA) and an austenitic stainless steel (STS) are combined to produce a multi-layered sheet (MLS), the synergic effects of maximized body-centered-cubic(BCC) transformation-induced plasticity (TRIP) occurring in both HEA and STS on excellent tensile properties are expected. In this study, the tensile properties of STS/HEA/STS MLS, fabricated by hot-roll bonding, were compared with those of monolithic HEA and STS sheets. Both the HEA and STS layers of the MLS consisted of FCC grains, while some BCC grains occurred mostly in the HEA layer. The measured tensile properties were higher than the calculated values based on the rule of mixtures, and showed very high levels of tensile strength (803 and 1774 MPa at 25 °C and −196 °C, respectively) with sufficient elongation (44\% and 72\%, respectively). This result was attributed to the robust TRIP mechanism occurring step-by-step in the HEA and STS layers, along with the accommodation of the strain gradient near the strongly bonded HEA/STS interface. The step-by-step TRIP played a leading role in tuning the enormous BCC-TRIP occurring in both the HEA and STS layers, while taking complete advantage of the high strength–ductility balance.",

keywords = "High entropy alloy (HEA), Multi-layered sheet (MLS), Stainless steel, Transformation-induced plasticity (TRIP)",

author = "Kim, \{Dong Geun\} and Jo, \{Yong Hee\} and Taejin Song and Kim, \{Hyoung Seop\} and Lee, \{Byeong Joo\} and Sohn, \{Seok Su\} and Sunghak Lee",

note = "Funding Information: This work was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT ( NRF-2016M3D1A1023383 ), the Korea Institute for Advancement of Technology (KIAT) grant funded by the Korea Government ( MOTIE ) ( P0002019 , The Competency Development Program for Industry Specialist), and a Korea University Grant (Dr. Seok Su Sohn). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = aug,

day = "17",

doi = "10.1016/j.msea.2021.141727",

language = "English",

volume = "823",

journal = "Materials Science and Engineering A",

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TY - JOUR

T1 - Excellent strength-ductility combination of multi-layered sheets composed of high-strength V10Cr10Fe50Co30 high entropy alloy and 304 austenitic stainless steel

AU - Kim, Dong Geun

AU - Jo, Yong Hee

AU - Song, Taejin

AU - Kim, Hyoung Seop

AU - Lee, Byeong Joo

AU - Sohn, Seok Su

AU - Lee, Sunghak

N1 - Funding Information: This work was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT ( NRF-2016M3D1A1023383 ), the Korea Institute for Advancement of Technology (KIAT) grant funded by the Korea Government ( MOTIE ) ( P0002019 , The Competency Development Program for Industry Specialist), and a Korea University Grant (Dr. Seok Su Sohn). Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/8/17

Y1 - 2021/8/17

N2 - When a high-entropy alloy (HEA) and an austenitic stainless steel (STS) are combined to produce a multi-layered sheet (MLS), the synergic effects of maximized body-centered-cubic(BCC) transformation-induced plasticity (TRIP) occurring in both HEA and STS on excellent tensile properties are expected. In this study, the tensile properties of STS/HEA/STS MLS, fabricated by hot-roll bonding, were compared with those of monolithic HEA and STS sheets. Both the HEA and STS layers of the MLS consisted of FCC grains, while some BCC grains occurred mostly in the HEA layer. The measured tensile properties were higher than the calculated values based on the rule of mixtures, and showed very high levels of tensile strength (803 and 1774 MPa at 25 °C and −196 °C, respectively) with sufficient elongation (44% and 72%, respectively). This result was attributed to the robust TRIP mechanism occurring step-by-step in the HEA and STS layers, along with the accommodation of the strain gradient near the strongly bonded HEA/STS interface. The step-by-step TRIP played a leading role in tuning the enormous BCC-TRIP occurring in both the HEA and STS layers, while taking complete advantage of the high strength–ductility balance.

AB - When a high-entropy alloy (HEA) and an austenitic stainless steel (STS) are combined to produce a multi-layered sheet (MLS), the synergic effects of maximized body-centered-cubic(BCC) transformation-induced plasticity (TRIP) occurring in both HEA and STS on excellent tensile properties are expected. In this study, the tensile properties of STS/HEA/STS MLS, fabricated by hot-roll bonding, were compared with those of monolithic HEA and STS sheets. Both the HEA and STS layers of the MLS consisted of FCC grains, while some BCC grains occurred mostly in the HEA layer. The measured tensile properties were higher than the calculated values based on the rule of mixtures, and showed very high levels of tensile strength (803 and 1774 MPa at 25 °C and −196 °C, respectively) with sufficient elongation (44% and 72%, respectively). This result was attributed to the robust TRIP mechanism occurring step-by-step in the HEA and STS layers, along with the accommodation of the strain gradient near the strongly bonded HEA/STS interface. The step-by-step TRIP played a leading role in tuning the enormous BCC-TRIP occurring in both the HEA and STS layers, while taking complete advantage of the high strength–ductility balance.

KW - High entropy alloy (HEA)

KW - Multi-layered sheet (MLS)

KW - Stainless steel

KW - Transformation-induced plasticity (TRIP)

UR - https://www.scopus.com/pages/publications/85109545484

U2 - 10.1016/j.msea.2021.141727

DO - 10.1016/j.msea.2021.141727

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AN - SCOPUS:85109545484

SN - 0921-5093

VL - 823

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

M1 - 141727

ER -