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Title: How Atomic Bonding Plays the Hardness Behavior in the Al–Co–Cr–Cu–Fe–Ni High Entropy Family

Journal Article · · Small Science
ORCiD logo [1];  [2];  [3];  [4];  [5]
  1. Federal Institute of Materials Research and Testing (BAM), Berlin (Germany); Helmholtz-Zentrum Berlin (HZB), (Germany)
  2. Univ. of Florence (Italy)
  3. Carnegie Mellon Univ., Pittsburgh, PA (United States)
  4. Helmholtz-Zentrum Berlin (HZB), (Germany)
  5. Federal Institute of Materials Research and Testing (BAM), Berlin (Germany)

A systematic study on a face-centered cubic-based compositionally complex alloy system Al–Co–Cr–Cu–Fe–Ni in its single-phase state is carried out, where a mother senary compound Al8Co17Cr17Cu8Fe17Ni33 and five of its suballoys, obtained by removing one element at a time, are investigated and exhaustively analyzed determining the contribution of each alloying element in the solid solution. The senary and the quinaries are compared using experimental techniques including X-ray absorption spectroscopy, X-ray diffraction, transmission electron microscopy, and first principles hybrid Monte Carlo/molecular dynamics simulations. Chemical short-range order and bond length distances have been determined both at the experimental and computational level. Electronic structure and local atomic distortions up to 5.2 Å have been correlated to the microhardness values. A linear regression model connecting hardness with local lattice distortions is presented.

Research Organization:
Carnegie Mellon Univ., Pittsburgh, PA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0014506; AC02-05CH11231; BES-ERCAP24744
OSTI ID:
2267549
Journal Information:
Small Science, Vol. 4, Issue 2; ISSN 2688-4046
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (51)

Generalized Gradient Approximation Made Simple journal October 1996
Corrosion-Resistant High-Entropy Alloys: A Review journal February 2017
Investigation of phase constitution and stability of gas-atomized Al0.5CoCrFeNi2 high-entropy alloy powders journal January 2022
High-temperature shape memory properties of Cu15Ni35Ti25Hf12.5Zr12.5 high-entropy alloy journal September 2021
Ab initio phase stabilities and mechanical properties of multicomponent alloys: A comprehensive review for high entropy alloys and compositionally complex alloys journal January 2019
Connections between the electron-energy-loss spectra, the local electronic structure, and the physical properties of a material: A study of nickel aluminum alloys journal April 1998
High entropy alloys: A focused review of mechanical properties and deformation mechanisms journal April 2020
Electronic structure and elastic properties of the Ni 3 X ( X =Mn, Al, Ga, Si, Ge) intermetallics journal November 1996
Lattice‐Distortion‐Enhanced Yield Strength in a Refractory High‐Entropy Alloy journal November 2020
Real-space multiple-scattering approach to XANES journal May 1999
A review on High-Temperature Applicability: A milestone for high entropy alloys journal November 2022
Short-range chemical order and local lattice distortion in a compositionally complex alloy journal July 2020
A role of atomic size misfit in lattice distortion and solid solution strengthening of TiNbHfTaZr high entropy alloy system journal March 2022
ATHENA and ARTEMIS Interactive Graphical Data Analysisusing IFEFFIT journal January 2005
A machine learning-based alloy design system to facilitate the rational design of high entropy alloys with enhanced hardness journal January 2022
FCC and BCC equivalents in as-cast solid solutions of Al x Co y Cr z Cu 0.5 Fe v Ni w high-entropy alloys journal December 2006
Charge transfer effect on local lattice distortion in a HfNbTiZr high entropy alloy journal October 2021
Machine learning for alloys journal July 2021
Experimental and theoretical study of the electronic structure of Fe, Co, and Ni aluminides with the B 2 structure journal July 1996
Effect of decomposition of the Cr–Fe–Co rich phase of AlCoCrCuFeNi high entropy alloy on magnetic properties journal May 2011
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Effects of heat treatment on microstructure, hardness and local structure in a compositionally complex alloy journal January 2022
Extended x-ray absorption fine structure—its strengths and limitations as a structural tool journal October 1981
Lightweight, ultrastrong and high thermal-stable eutectic high-entropy alloys for elevated-temperature applications journal April 2023
Hybrid Monte Carlo/Molecular Dynamics Simulation of a Refractory Metal High Entropy Alloy journal October 2013
Microstructure and Tensile Behavior of Al8Co17Cr17Cu8Fe17Ni33 (at.%) High-Entropy Alloy journal September 2013
Irradiation effects in high-entropy alloys and their applications journal January 2023
High-entropy alloys journal June 2019
Functional properties and promising applications of high entropy alloys journal October 2020
Evolution of short-range order and its effects on the plastic deformation behavior of single crystals of the equiatomic Cr-Co-Ni medium-entropy alloy journal January 2023
Temperature evolution of lattice misfit in Hf and Mo variations of the Al10Co25Cr8Fe15Ni36Ti6 compositionally complex alloy journal November 2020
Mechanical behavior of high-entropy alloys journal May 2021
Review on magnetocaloric high-entropy alloys: Design and analysis methods journal September 2022
Investigation of phases in Al23Co15Cr23Cu8Fe15Ni16 and Al8Co17Cr17Cu8Fe17Ni33 high entropy alloys and comparison with equilibrium phases predicted by Thermo-Calc journal March 2013
Chemical interaction and electronic structure in a compositionally complex alloy: A case study by means of X-ray absorption and X-ray photoelectron spectroscopy journal March 2021
TOPAS and TOPAS-Academic : an optimization program integrating computer algebra and crystallographic objects written in C++ journal February 2018
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
The LISA beamline at ESRF journal February 2019
New multiphase compositionally complex alloys driven by the high entropy alloy approach journal January 2019
Uncovering heterogeneity of local lattice distortion in TiZrHfNbTa refractory high entropy alloy by SR-XRD and EXAFS journal January 2023
Simple model for relating EELS and XAS spectra of metals to changes in cohesive energy journal September 1998
Recent progress on the development of high entropy alloys (HEAs) for solid hydrogen storage: A review journal March 2022
The oxidation behavior of a Ni2FeCoCrAl0.5 high-entropy superalloy in O2-containing environments journal September 2019
Twelve-Component Free-Standing Nanoporous High-Entropy Alloys for Multifunctional Electrocatalysis journal December 2021
On the origin of diffuse intensities in fcc electron diffraction patterns journal October 2023
Design considerations for high entropy alloys in advanced nuclear applications journal August 2022
Processing of a single-crystalline CrCoNi medium-entropy alloy and evolution of its thermal expansion and elastic stiffness coefficients with temperature journal March 2020
Enhancement of magnetic properties in FeCoNiCr0.4CuX high entropy alloys through the cocktail effect for megahertz electromagnetic wave absorption journal August 2021
Decomposition in multi-component AlCoCrCuFeNi high-entropy alloy journal January 2011
Recent advances on environmental corrosion behavior and mechanism of high-entropy alloys journal July 2021
ATOMS : crystallography for the X-ray absorption spectroscopist journal March 2001