skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Atomistic clustering-ordering and high-strain deformation of an Al0.1CrCoFeNi high-entropy alloy

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep31028· OSTI ID:1321882
 [1];  [2];  [3];  [4];  [1]
  1. Iowa State Univ., Ames, IA (United States)
  2. Ames Lab., Ames, IA (United States)
  3. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  4. The Univ. of Tennessee, Knoxville, TN (United States)

Here, computational investigations of structural, chemical, and deformation behavior in high-entropy alloys (HEAs), which possess notable mechanical strength, have been limited due to the absence of applicable force fields. To extend investigations, we propose a set of intermolecular potential parameters for a quinary Al-Cr-Co-Fe-Ni alloy, using the available ternary Embedded Atom Method and Lennard-Jones potential in classical molecular-dynamics simulations. The simulation results are validated by a comparison to first-principles Korringa-Kohn-Rostoker (KKR) - Coherent Potential Approximation (CPA) [KKR-CPA] calculations for the HEA structural properties (lattice constants and bulk moduli), relative stability, pair probabilities, and high-temperature short-range ordering. The simulation (MD)-derived properties are in quantitative agreement with KKR-CPA calculations (first-principles) and experiments. We study AlxCrCoFeNi for Al ranging from 0 ≤ x ≤2 mole fractions, and find that the HEA shows large chemical clustering over a wide temperature range for x < 0.5. At various temperatures high-strain compression promotes atomistic rearrangements in Al0.1CrCoFeNi, resulting in a clustering-to-ordering transition that is absent for tensile loading. Large fluctuations under stress, and at higher temperatures, are attributed to the thermo-plastic instability in Al0.1CrCoFeNi.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1321882
Report Number(s):
IS-J-8932; srep31028
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 49 works
Citation information provided by
Web of Science

References (42)

Physical Properties of High Entropy Alloys journal December 2013
Measurement of the Deformation of Aluminum Alloys under High Strain Rates Using High Speed Digital Cameras journal January 2013
Microstructural development in equiatomic multicomponent alloys journal July 2004
Metastable BCC and FCC alloy bulk bodies in Fe–Cu system prepared by mechanical alloying and shock compression journal June 1999
Refractory high-entropy alloys journal September 2010
Interatomic potential to study plasticity in stainless steels: the FeNiCr model alloy journal November 2011
Theory of compositional and magnetic correlations in alloys: Interpretation of a diffuse neutron-scattering experiment on an iron-vanadium single crystal journal September 1990
Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures journal February 2016
VMD: Visual molecular dynamics journal February 1996
Plastic deformation properties of Zr–Nb–Ti–Ta–Hf high-entropy alloys journal March 2015
AlCoCrCuFeNi high entropy alloy cluster growth and annealing on silicon: A classical molecular dynamics simulation study journal November 2013
Microstructures and properties of high-entropy alloys journal April 2014
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
High-Strain-Rate Deformation: Mechanical Behavior and Deformation Substructures Induced journal August 2012
Superplasticity of AlCoCrCuFeNi High Entropy Alloy journal December 2012
Molecular dynamics for low temperature plasma–surface interaction studies journal September 2009
High-Entropy Alloys book January 2016
Effect of high strain rate on plastic deformation of a low alloy steel subjected to ballistic impact journal May 2005
Commensurate and Incommensurate Ordering Tendencies in the Ternary fcc Cu-Ni-Zn System journal January 1995
Aluminum Alloying Effects on Lattice Types, Microstructures, and Mechanical Behavior of High-Entropy Alloys Systems journal October 2013
Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy journal January 2015
Microstructure, thermophysical and electrical properties in AlxCoCrFeNi (0≤x≤2) high-entropy alloys journal July 2009
Deformation mechanisms in a precipitation-strengthened ferritic superalloy revealed by in situ neutron diffraction studies at elevated temperatures journal January 2015
Structural properties and relative stability of (meta)stable ordered, partially ordered, and disordered Al-Li alloy phases journal April 2012
Evaluation of Tribological Behavior of Al-Co-Cr-Fe-Ni High Entropy Alloy Using Molecular Dynamics Simulation: Tribological behavior of Al-Co-Cr-Fe-Ni high entropy alloy using molecular dynamics journal May 2012
Temperature rise at shear bands in metallic glasses journal December 2005
Compositional short-range ordering in metallic alloys: Band-filling, charge-transfer, and size effects from a first-principles all-electron Landau-type theory journal July 1994
Special points for Brillouin-zone integrations journal June 1976
Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes journal May 2004
Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metals journal June 1984
Frugivorous Bird Guild Seasonal Patterns in Semiarid Chaco Forests are Linked to Habitat Seasonality but Reveal Phylogenetic Signature journal January 2015
The acute effects of differential dietary fatty acids on human skeletal muscle pyruvate dehydrogenase activity journal January 2008
Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces journal April 2008
First-principles all-electron theory of atomic short-range ordering in metallic alloys: D 0 22 - versus L 1 2 -like correlations journal July 1994
Flow of melt and glass forms of metallic alloys journal April 1972
Ballistic impact of polycarbonate—An experimental investigation journal January 1993
A local exchange-correlation potential for the spin polarized case. i journal July 1972
Electronic origins of ordering in multicomponent metallic alloys: Application to the Cu-Ni-Zn system journal April 1996
Fatigue behavior of Al0.5CoCrCuFeNi high entropy alloys journal September 2012
Modeling the high strain rate behavior of titanium undergoing ballistic impact and penetration journal December 2001
Green's function multiple-scattering theory with a truncated basis set: An augmented-KKR formalism journal November 2014
Solid Solution Formation Criteria for High Entropy Alloys journal October 2007

Cited By (7)

Realistic microstructure evolution of complex Ta-Nb-Hf-Zr high-entropy alloys by simulation techniques journal November 2019
Factors influencing thermal transport across graphene/metal interfaces with van der Waals interactions journal January 2019
Modeling the structure and thermodynamics of high-entropy alloys journal July 2018
Design of high-strength refractory complex solid-solution alloys journal March 2018
Short-range ordering effects on the electronic Bloch spectral function of real materials in the nonlocal coherent-potential approximation journal December 2016
Dislocation Interaction and V-Shaped Growth of the Distorted Structure During Nanoindentation of Cu20Ni20Al20Co20Fe20 (high-entropy alloy)-Coated Copper: A Molecular Dynamics Simulation-Based Study journal January 2019
A Combinatorial Approach for Assessing the Magnetic Properties of High Entropy Alloys: Role of Cr in AlCo x Cr 1- x FeNi  : A Combinatorial Approach for Assessing the Magnetic… journal May 2017