Investigation of the strain rate sensitivity of CoCrFeMnNiTix (x=0, 0.3) high-entropy alloys using the shear punch test

Sergio Gonzalez Sanchez; Athanasios Sfikas; S. Kamnis; Sean E. John; N.C. Barnard; C. Gammer; Jürgen Eckert; C. G. Garay-Reyes; R. Martínez-Sánchez; Shine Win Naung; Mohammad Rahmati; T. Keil; K. Durst; R.J. Lancaster

doi:10.1016/j.matdes.2023.112294

Investigation of the strain rate sensitivity of CoCrFeMnNiTix (x=0, 0.3) high-entropy alloys using the shear punch test

Sergio Gonzalez Sanchez^*, Athanasios Sfikas, S. Kamnis, Sean E. John, N.C. Barnard, C. Gammer, Jürgen Eckert, C. G. Garay-Reyes, R. Martínez-Sánchez, Shine Win Naung, Mohammad Rahmati, T. Keil, K. Durst, R.J. Lancaster

^*Corresponding author for this work

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Abstract

High entropy alloys (HEAs) are a novel class of metallic materials that exhibit a unique blend of properties due to their chemical composition and atomic arrangement. This research aims to investigate the strain rate sensitivity (SRS) of two HEA CoCrFeMnNiTi _x (x = 0, 0.3) alloy compositions through the use of shear punch testing. This method has been proven to provide reliable results for both HEA materials, including the CoCrFeMnNiTi0.3 HEA composition which was found to be inherently brittle and contained both σ-phase and Laves phase compounds with a hardness close to 14 GPa and a soft FCC phase. Among all the testing temperatures (room temperature to 400 °C) and deflection rates (0.2, 2 and 10 mm.min ⁻¹) used, only the CoCrFeMnNi HEA alloy was found to exhibit SRS at room temperature (m = 0.0333), while for the other HEA alloy variant and testing conditions, the SRS was found to be zero. From empirical correlations and finite element analysis (FEA), the calculated value for m ranged from 0.0333 to 0.0359, thus evidencing that the FEA simulations provide an accurate and suitable means of capturing the deformation behaviour of such alloys when subjected to shearing.

Original language	English
Article number	112294
Number of pages	13
Journal	Materials & Design
Volume	233
Early online date	1 Sept 2023
DOIs	https://doi.org/10.1016/j.matdes.2023.112294
Publication status	Published - 1 Sept 2023

Keywords

Shear punch testing
High entropy alloy
Finite element simulation

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10.1016/j.matdes.2023.112294Licence: CC BY

1-s2.0-S0264127523007098-mainAccepted author manuscript, 2.6 MBLicence: CC BY
1-s2.0-S0264127523007098-mainFinal published version, 16.5 MBLicence: CC BY

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Gonzalez Sanchez, S., Sfikas, A., Kamnis, S., John, S. E., Barnard, N. C., Gammer, C., Eckert, J., Garay-Reyes, C. G., Martínez-Sánchez, R., Win Naung, S., Rahmati, M., Keil, T., Durst, K., & Lancaster, R. J. (2023). Investigation of the strain rate sensitivity of CoCrFeMnNiTix (x=0, 0.3) high-entropy alloys using the shear punch test. Materials & Design, 233, Article 112294. https://doi.org/10.1016/j.matdes.2023.112294

@article{144db48a363641ad8284a2f10140ae4e,

title = "Investigation of the strain rate sensitivity of CoCrFeMnNiTix (x=0, 0.3) high-entropy alloys using the shear punch test",

abstract = "High entropy alloys (HEAs) are a novel class of metallic materials that exhibit a unique blend of properties due to their chemical composition and atomic arrangement. This research aims to investigate the strain rate sensitivity (SRS) of two HEA CoCrFeMnNiTi x (x = 0, 0.3) alloy compositions through the use of shear punch testing. This method has been proven to provide reliable results for both HEA materials, including the CoCrFeMnNiTi0.3 HEA composition which was found to be inherently brittle and contained both σ-phase and Laves phase compounds with a hardness close to 14 GPa and a soft FCC phase. Among all the testing temperatures (room temperature to 400 °C) and deflection rates (0.2, 2 and 10 mm.min −1) used, only the CoCrFeMnNi HEA alloy was found to exhibit SRS at room temperature (m = 0.0333), while for the other HEA alloy variant and testing conditions, the SRS was found to be zero. From empirical correlations and finite element analysis (FEA), the calculated value for m ranged from 0.0333 to 0.0359, thus evidencing that the FEA simulations provide an accurate and suitable means of capturing the deformation behaviour of such alloys when subjected to shearing.",

keywords = "Shear punch testing, High entropy alloy, Finite element simulation",

author = "\{Gonzalez Sanchez\}, Sergio and Athanasios Sfikas and S. Kamnis and John, \{Sean E.\} and N.C. Barnard and C. Gammer and J{\"u}rgen Eckert and Garay-Reyes, \{C. G.\} and R. Mart{\'i}nez-S{\'a}nchez and \{Win Naung\}, Shine and Mohammad Rahmati and T. Keil and K. Durst and R.J. Lancaster",

note = "Funding information: The authors would like to acknowledge the support from the UK Research \& Innovation (UKRI-IUK) national funding agency. Project Grant: 53662 {\textquoteleft}Design of High-Entropy Superalloys Using a Hybrid Experimental-Based Machine Learning Approach: Steel Sector Application{\textquoteright}. K.D. gratefully acknowledge the funding by the German Research Foundation (DFG) within the priority programme SPP2006 under Grant No. DU424/13–2.",

year = "2023",

month = sep,

day = "1",

doi = "10.1016/j.matdes.2023.112294",

language = "English",

volume = "233",

journal = "Materials \& Design",

issn = "0264-1275",

publisher = "Elsevier B.V.",

}

Gonzalez Sanchez, S, Sfikas, A, Kamnis, S, John, SE, Barnard, NC, Gammer, C, Eckert, J, Garay-Reyes, CG, Martínez-Sánchez, R, Win Naung, S, Rahmati, M, Keil, T, Durst, K & Lancaster, RJ 2023, 'Investigation of the strain rate sensitivity of CoCrFeMnNiTix (x=0, 0.3) high-entropy alloys using the shear punch test', Materials & Design, vol. 233, 112294. https://doi.org/10.1016/j.matdes.2023.112294

TY - JOUR

T1 - Investigation of the strain rate sensitivity of CoCrFeMnNiTix (x=0, 0.3) high-entropy alloys using the shear punch test

AU - Gonzalez Sanchez, Sergio

AU - Sfikas, Athanasios

AU - Kamnis, S.

AU - John, Sean E.

AU - Barnard, N.C.

AU - Gammer, C.

AU - Eckert, Jürgen

AU - Garay-Reyes, C. G.

AU - Martínez-Sánchez, R.

AU - Win Naung, Shine

AU - Rahmati, Mohammad

AU - Keil, T.

AU - Durst, K.

AU - Lancaster, R.J.

N1 - Funding information: The authors would like to acknowledge the support from the UK Research & Innovation (UKRI-IUK) national funding agency. Project Grant: 53662 ‘Design of High-Entropy Superalloys Using a Hybrid Experimental-Based Machine Learning Approach: Steel Sector Application’. K.D. gratefully acknowledge the funding by the German Research Foundation (DFG) within the priority programme SPP2006 under Grant No. DU424/13–2.

PY - 2023/9/1

Y1 - 2023/9/1

N2 - High entropy alloys (HEAs) are a novel class of metallic materials that exhibit a unique blend of properties due to their chemical composition and atomic arrangement. This research aims to investigate the strain rate sensitivity (SRS) of two HEA CoCrFeMnNiTi x (x = 0, 0.3) alloy compositions through the use of shear punch testing. This method has been proven to provide reliable results for both HEA materials, including the CoCrFeMnNiTi0.3 HEA composition which was found to be inherently brittle and contained both σ-phase and Laves phase compounds with a hardness close to 14 GPa and a soft FCC phase. Among all the testing temperatures (room temperature to 400 °C) and deflection rates (0.2, 2 and 10 mm.min −1) used, only the CoCrFeMnNi HEA alloy was found to exhibit SRS at room temperature (m = 0.0333), while for the other HEA alloy variant and testing conditions, the SRS was found to be zero. From empirical correlations and finite element analysis (FEA), the calculated value for m ranged from 0.0333 to 0.0359, thus evidencing that the FEA simulations provide an accurate and suitable means of capturing the deformation behaviour of such alloys when subjected to shearing.

AB - High entropy alloys (HEAs) are a novel class of metallic materials that exhibit a unique blend of properties due to their chemical composition and atomic arrangement. This research aims to investigate the strain rate sensitivity (SRS) of two HEA CoCrFeMnNiTi x (x = 0, 0.3) alloy compositions through the use of shear punch testing. This method has been proven to provide reliable results for both HEA materials, including the CoCrFeMnNiTi0.3 HEA composition which was found to be inherently brittle and contained both σ-phase and Laves phase compounds with a hardness close to 14 GPa and a soft FCC phase. Among all the testing temperatures (room temperature to 400 °C) and deflection rates (0.2, 2 and 10 mm.min −1) used, only the CoCrFeMnNi HEA alloy was found to exhibit SRS at room temperature (m = 0.0333), while for the other HEA alloy variant and testing conditions, the SRS was found to be zero. From empirical correlations and finite element analysis (FEA), the calculated value for m ranged from 0.0333 to 0.0359, thus evidencing that the FEA simulations provide an accurate and suitable means of capturing the deformation behaviour of such alloys when subjected to shearing.

KW - Shear punch testing

KW - High entropy alloy

KW - Finite element simulation

UR - https://www.scopus.com/pages/publications/85170436574

U2 - 10.1016/j.matdes.2023.112294

DO - 10.1016/j.matdes.2023.112294

M3 - Article

SN - 0264-1275

VL - 233

JO - Materials & Design

JF - Materials & Design

M1 - 112294

ER -

Investigation of the strain rate sensitivity of CoCrFeMnNiTix (x=0, 0.3) high-entropy alloys using the shear punch test

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