Slip nucleation in single crystal FeNiCoCrMn high entropy alloy

L. Patriarca; A. Ojha; H. Sehitoglu; Y. I. Chumlyakov

doi:10.1016/j.scriptamat.2015.09.009

Slip nucleation in single crystal FeNiCoCrMn high entropy alloy

L. Patriarca, A. Ojha, H. Sehitoglu, Y. I. Chumlyakov

Mechanical Science and Engineering

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

Abstract

We present an experimental and theoretical study of slip nucleation in high entropy FeNiCoCrMn alloy which possesses superb mechanical properties. Uniaxial compression experiments were conducted on the 59¯1 oriented single crystals. The single crystals permit evaluation of critical resolved shear stress (CRSS), and using Digital Image Correlation strain measurements it is possible to track the slip nucleation precisely. The experimental value of 175 MPa for CRSS is in excellent agreement with 178 MPa obtained utilizing an advanced atomistic-modified Peierls-Nabarro modeling formalism. This close agreement demonstrates the efficacy of our methodology and has implications in design of new high entropy alloys.

Original language	English (US)
Pages (from-to)	54-57
Number of pages	4
Journal	Scripta Materialia
Volume	112
DOIs	https://doi.org/10.1016/j.scriptamat.2015.09.009
State	Published - Feb 2016

Keywords

Digital image correlation
High entropy alloy
Peierls stress. Critical resolved shear stress
Slip
X-ray diffraction

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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title = "Slip nucleation in single crystal FeNiCoCrMn high entropy alloy",

abstract = "We present an experimental and theoretical study of slip nucleation in high entropy FeNiCoCrMn alloy which possesses superb mechanical properties. Uniaxial compression experiments were conducted on the 59¯1 oriented single crystals. The single crystals permit evaluation of critical resolved shear stress (CRSS), and using Digital Image Correlation strain measurements it is possible to track the slip nucleation precisely. The experimental value of 175 MPa for CRSS is in excellent agreement with 178 MPa obtained utilizing an advanced atomistic-modified Peierls-Nabarro modeling formalism. This close agreement demonstrates the efficacy of our methodology and has implications in design of new high entropy alloys.",

keywords = "Digital image correlation, High entropy alloy, Peierls stress. Critical resolved shear stress, Slip, X-ray diffraction",

author = "L. Patriarca and A. Ojha and H. Sehitoglu and Chumlyakov, {Y. I.}",

year = "2016",

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doi = "10.1016/j.scriptamat.2015.09.009",

language = "English (US)",

volume = "112",

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journal = "Scripta Materialia",

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TY - JOUR

T1 - Slip nucleation in single crystal FeNiCoCrMn high entropy alloy

AU - Patriarca, L.

AU - Ojha, A.

AU - Sehitoglu, H.

AU - Chumlyakov, Y. I.

PY - 2016/2

Y1 - 2016/2

N2 - We present an experimental and theoretical study of slip nucleation in high entropy FeNiCoCrMn alloy which possesses superb mechanical properties. Uniaxial compression experiments were conducted on the 59¯1 oriented single crystals. The single crystals permit evaluation of critical resolved shear stress (CRSS), and using Digital Image Correlation strain measurements it is possible to track the slip nucleation precisely. The experimental value of 175 MPa for CRSS is in excellent agreement with 178 MPa obtained utilizing an advanced atomistic-modified Peierls-Nabarro modeling formalism. This close agreement demonstrates the efficacy of our methodology and has implications in design of new high entropy alloys.

AB - We present an experimental and theoretical study of slip nucleation in high entropy FeNiCoCrMn alloy which possesses superb mechanical properties. Uniaxial compression experiments were conducted on the 59¯1 oriented single crystals. The single crystals permit evaluation of critical resolved shear stress (CRSS), and using Digital Image Correlation strain measurements it is possible to track the slip nucleation precisely. The experimental value of 175 MPa for CRSS is in excellent agreement with 178 MPa obtained utilizing an advanced atomistic-modified Peierls-Nabarro modeling formalism. This close agreement demonstrates the efficacy of our methodology and has implications in design of new high entropy alloys.

KW - Digital image correlation

KW - High entropy alloy

KW - Peierls stress. Critical resolved shear stress

KW - Slip

KW - X-ray diffraction

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U2 - 10.1016/j.scriptamat.2015.09.009

DO - 10.1016/j.scriptamat.2015.09.009

M3 - Article

AN - SCOPUS:84948718805

VL - 112

SP - 54

EP - 57

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

ER -

Slip nucleation in single crystal FeNiCoCrMn high entropy alloy

Abstract

Keywords

ASJC Scopus subject areas

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