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Mechanical properties of high-entropy alloys with emphasis on face-centered cubic alloys

Journal Article · · Progress in Materials Science
 [1];  [2];  [2];  [3]
  1. Univ. of California, San Diego, CA (United States); The Regents of the University of California, U.C. San Diego
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  3. Univ. of California, San Diego, CA (United States)
HHigh-entropy alloys (HEAs), also known as multi-principal element alloys or multi-component alloys, have been the subject of numerous investigations since they were first described in 2004. The earliest HEA was the equiatomic CrMnFeCoNi “Cantor” alloy, but HEAs now encompass a broad class of metallic and ceramic systems. The concept of utilizing the high entropy of mixing to develop stable multi-element alloys may not be scientifically correct but has produced extraordinary mechanical properties in specific HEAs, mainly CrCoNi-based alloys, associated with their continuous work-hardening rate that is sustained to large plastic strains (~0.5) and at low temperatures. This, in combination with the high frictional forces on dislocations and a propensity for twinning, leads to outstandingly high fracture toughness values (exceeding 200 MPa·m1/2) and resistance to shear-band formation under dynamic loading. The critical shear strain for the onset of adiabatic shear band formation is ~7 for the Cantor alloy, much higher than that for conventional alloys, suggesting superior ballistic properties. The slower diffusion rates resulting from the multi-element environment contribute to the excellent intermediate-temperature performance. We review the principal mechanical properties of these alloys with emphasis on the face-centered cubic systems, such as the CrCoNi-based alloys. Their favorable mechanical properties and ease of processing by conventional means suggest extensive utilization in many future structural applications.
Research Organization:
Univ. of California, San Diego, CA (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-05CH11231; NA0002080; NA0003842
OSTI ID:
1634203
Alternate ID(s):
OSTI ID: 1636758
Journal Information:
Progress in Materials Science, Journal Name: Progress in Materials Science Journal Issue: C Vol. 102; ISSN 0079-6425
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (173)

Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes journal May 2004
Solid-Solution Phase Formation Rules for Multi-component Alloys journal June 2008
From High-Entropy Alloys to High-Entropy Steels journal July 2015
A simple method of constructing an Ashby-type deformation mechanism map journal June 1978
Stacking fault energies of fcc fe-Ni alloys by x-ray diffraction line profile analysis journal March 1976
Mechanism of work hardening in Hadfield manganese steel journal May 1981
Mechanisms of tempered martensite embrittlement in low alloy steels journal August 1978
On macroscopic and microscopic analyses for crack initiation and crack growth toughness in ductile alloys journal February 1985
The influence of stacking fault energy on the mechanical behavior of Cu and Cu-Al alloys: Deformation twinning, work hardening, and dynamic recovery journal January 2001
Deformation Substructures and Their Transitions in Laser Shock–Compressed Copper-Aluminum Alloys journal December 2007
Development of a Novel Melt Spinning-Based Processing Route for Oxide Dispersion-Strengthened Steels journal December 2017
Mechanical Properties and Microstructure of the CoCrFeMnNi High Entropy Alloy Under High Strain Rate Compression journal May 2016
The role of dislocations in the growth of nanosized voids in ductile failure of metals journal February 2009
Alloy Design and Properties Optimization of High-Entropy Alloys journal July 2012
Mechanical Properties and Stacking Fault Energies of NiFeCrCoMn High-Entropy Alloy journal October 2013
“Bulk” Nanocrystalline Metals: Review of the Current State of the Art and Future Opportunities for Copper and Copper Alloys journal May 2014
Fracture Toughness and Fatigue Crack Growth Behavior of As-Cast High-Entropy Alloys journal August 2015
Processing, Microstructure and Mechanical Properties of the CrMnFeCoNi High-Entropy Alloy journal August 2015
A dislocation model for twinning in f.c.c. metals journal August 1963
The formation of annealing twins journal December 1969
A first report on deformation-mechanism maps journal July 1972
A model for the formation of annealing twins in F.C.C. metals and alloys journal June 1978
New observations on the mechanisms of dynamic strain aging and of jerky flow journal July 1979
Cross-slipping process and the stress-orientation dependence in pure copper journal September 1979
Some remarks on elastic crack-tip stress fields journal June 1972
Relationships between the J-integral and the crack opening displacement for stationary and extending cracks journal August 1981
ABO3-type oxides—Their structure and properties—A bird's eye view journal December 1978
Hall-petch strengthening for the microhardness of twelve nanometer grain diameter electrodeposited nickel journal January 1986
Dynamic fracture (spalling) of metals journal January 1983
Deformation twinning journal January 1995
Recrystallization and grain growth journal January 1952
The effect of dislocation drag on the stress-strain behavior of F.C.C. metals journal August 1992
A unified approach to grain boundary sliding in creep and superplasticity journal July 1994
Shear localization in dynamic deformation of materials: microstructural evolution and self-organization journal October 2001
Grain size dependence of the plastic deformation kinetics in Cu journal January 2003
Mechanical properties of ultra fine grained steels journal November 2001
The onset of twinning in metals: a constitutive description journal November 2001
A Bragg–Williams model for the thermodynamic activity and the thermodynamic factor in diffusion for ordered alloys with substitutional defects journal November 1998
Mechanical properties in tension of mechanically attrited nanocrystalline iron by the use of the miniaturized disk bend test journal November 1998
Microscopic description of plasticity in computer generated metallic nanophase samples: a comparison between Cu and Ni journal August 1999
Temperature dependence of strain hardening and plastic instability behaviors in austenitic stainless steels journal August 2004
Size dependence of mechanical properties of gold at the micron scale in the absence of strain gradients journal April 2005
Tensile and compressive behavior of tungsten, molybdenum, tantalum and niobium at the nanoscale journal April 2010
Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Tiy high-entropy alloys journal September 2011
Dislocation and twin substructure evolution during strain hardening of an Fe–22wt.% Mn–0.6wt.% C TWIP steel observed by electron channeling contrast imaging journal September 2011
Solute strengthening from first principles and application to aluminum alloys journal May 2012
First-principles prediction of yield stress for basal slip in Mg–Al alloys journal August 2012
Fatigue behavior of Al0.5CoCrCuFeNi high entropy alloys journal September 2012
Revealing the strain-hardening behavior of twinning-induced plasticity steels: Theory, simulations, experiments journal January 2013
Relative effects of enthalpy and entropy on the phase stability of equiatomic high-entropy alloys journal April 2013
Sluggish diffusion in Co–Cr–Fe–Mn–Ni high-entropy alloys journal August 2013
Atomic-scale compositional characterization of a nanocrystalline AlCrCuFeNiZn high-entropy alloy using atom probe tomography journal July 2013
The influences of temperature and microstructure on the tensile properties of a CoCrFeMnNi high-entropy alloy journal September 2013
Size-dependent plasticity in an Nb25Mo25Ta25W25 refractory high-entropy alloy journal February 2014
Effect of aluminum on the microstructure and properties of two refractory high-entropy alloys journal April 2014
Temperature dependence of the mechanical properties of equiatomic solid solution alloys with face-centered cubic crystal structures journal December 2014
Dynamic strain aging studied at the atomic scale journal March 2015
Mechanical properties, microstructure and thermal stability of a nanocrystalline CoCrFeMnNi high-entropy alloy after severe plastic deformation journal September 2015
A precipitation-hardened high-entropy alloy with outstanding tensile properties journal January 2016
Amorphization and nanocrystallization of silicon under shock compression journal January 2016
Microstructure and strengthening mechanisms in an FCC structured single-phase nanocrystalline Co25Ni25Fe25Al7.5Cu17.5 high-entropy alloy journal April 2016
Spherical nanoindentation creep behavior of nanocrystalline and coarse-grained CoCrFeMnNi high-entropy alloys journal May 2016
Atomic-scale characterization and modeling of 60° dislocations in a high-entropy alloy journal May 2016
Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures journal June 2016
Microstructure evolution and critical stress for twinning in the CrMnFeCoNi high-entropy alloy journal October 2016
Theory of strengthening in fcc high entropy alloys journal October 2016
A critical review of high entropy alloys and related concepts journal January 2017
Solute strengthening in random alloys journal February 2017
Reasons for the superior mechanical properties of medium-entropy CrCoNi compared to high-entropy CrMnFeCoNi journal April 2017
Ab initio assisted design of quinary dual-phase high-entropy alloys with transformation-induced plasticity journal September 2017
Thermal activation parameters of plastic flow reveal deformation mechanisms in the CrMnFeCoNi high-entropy alloy journal January 2018
Adiabatic shear localization in the CrMnFeCoNi high-entropy alloy journal June 2018
Fundamental deformation behavior in high-entropy alloys: An overview journal October 2017
Pressure and shear-induced amorphization of silicon journal December 2015
Microstructure and small-scale size effects in plasticity of individual phases of Al0.7CoCrFeNi High Entropy alloy journal September 2016
Refractory high-entropy alloys journal September 2010
Mechanical properties of Nb25Mo25Ta25W25 and V20Nb20Mo20Ta20W20 refractory high entropy alloys journal May 2011
More than entropy in high-entropy alloys: Forming solid solutions or amorphous phase journal October 2013
Polycrystalline elastic moduli of a high-entropy alloy at cryogenic temperatures journal March 2015
Serration behavior and negative strain rate sensitivity of Al0.1CoCrFeNi high entropy alloy journal May 2017
Effect of temperature on the fatigue-crack growth behavior of the high-entropy alloy CrMnFeCoNi journal September 2017
Microstructure and tensile behaviors of FCC Al0.3CoCrFeNi high entropy alloy journal June 2009
Phase equilibria, microstructure, and high temperature oxidation resistance of novel refractory high-entropy alloys journal March 2015
Temperature dependencies of the elastic moduli and thermal expansion coefficient of an equiatomic, single-phase CoCrFeMnNi high-entropy alloy journal February 2015
Microstructural evolution of a CoCrFeMnNi high-entropy alloy after swaging and annealing journal October 2015
Stress dependence of cross slip energy barrier for face-centered cubic nickel journal January 2014
Twin boundary: Controllable interface to fatigue cracking journal July 2017
Amorphization at twin-twin intersected region in FeCoCrNi high-entropy alloy subjected to high-pressure torsion journal May 2017
Anomalous decrease in X-ray diffraction intensities of Cu–Ni–Al–Co–Cr–Fe–Si alloy systems with multi-principal elements journal May 2007
Prediction of high-entropy stabilized solid-solution in multi-component alloys journal February 2012
Microstructure and mechanical properties of twinned Al0.5CrFeNiCo0.3C0.2 high entropy alloy processed by mechanical alloying and spark plasma sintering journal February 2014
A refractory Hf25Nb25Ti25Zr25 high-entropy alloy with excellent structural stability and tensile properties journal September 2014
High-entropy alloy: challenges and prospects journal July 2016
Microstructural development in equiatomic multicomponent alloys journal July 2004
Strain hardening rate sensitivity and strain rate sensitivity in TWIP steels journal April 2015
Grain-size dependent mechanical behavior of nanocrystalline metals journal October 2015
Deformation and failure in extreme regimes by high-energy pulsed lasers: A review journal March 2017
Mechanical properties of nanocrystalline materials journal May 2006
Plasticity in small-sized metallic systems: Intrinsic versus extrinsic size effect journal August 2011
Deformation twinning in nanocrystalline materials journal January 2012
Microstructures and properties of high-entropy alloys journal April 2014
Serration and noise behaviors in materials journal October 2017
On dislocation accumulation and work hardening in Hadfield steel journal August 2006
Grain growth and the Hall–Petch relationship in a high-entropy FeCrNiCoMn alloy journal April 2013
Enhanced hardness and fracture toughness of the laser-solidified FeCoNiCrCuTiMoAlSiB0.5 high-entropy alloy by martensite strengthening journal August 2013
Tensile ductility of nanotwinned austenitic grains in an austenitic steel journal August 2014
Temperature dependent stacking fault energy of FeCrCoNiMn high entropy alloy journal November 2015
Dynamic strain aging of Al 0.3 CoCrFeNi high entropy alloy single crystals journal November 2015
Slip nucleation in single crystal FeNiCoCrMn high entropy alloy journal February 2016
The origin of negative stacking fault energies and nano-twin formation in face-centered cubic high entropy alloys journal March 2017
A new class of high-entropy perovskite oxides journal January 2018
Chemical short-range orders and the induced structural transition in high-entropy alloys journal February 2018
Mechanisms of fatigue-crack propagation in ductile and brittle solids journal January 1999
Stabilizing nanostructures in metals using grain and twin boundary architectures journal March 2016
Metastable high-entropy dual-phase alloys overcome the strength–ductility trade-off journal May 2016
Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures journal February 2016
Dislocation mechanisms and 3D twin architectures generate exceptional strength-ductility-toughness combination in CrCoNi medium-entropy alloy journal February 2017
High pressure synthesis of a hexagonal close-packed phase of the high-entropy alloy CrMnFeCoNi journal May 2017
Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy journal January 2015
Accelerated exploration of multi-principal element alloys with solid solution phases journal March 2015
Ultrastrong ductile and stable high-entropy alloys at small scales journal July 2015
Entropy-stabilized oxides journal September 2015
The conflicts between strength and toughness journal October 2011
Enhanced strength and ductility in a high-entropy alloy via ordered oxygen complexes journal November 2018
A Promising New Class of High-Temperature Alloys: Eutectic High-Entropy Alloys journal August 2014
Experiments and Model for Serration Statistics in Low-Entropy, Medium-Entropy and High-Entropy Alloys journal November 2015
High-Entropy Metal Diborides: A New Class of High-Entropy Materials and a New Type of Ultrahigh Temperature Ceramics journal November 2016
High-velocity deformation of Al0.3CoCrFeNi high-entropy alloy: Remarkable resistance to shear failure journal February 2017
Shear localization of fcc high-entropy alloys journal January 2018
Relationship between stacking‐fault energy and x‐ray measurements of stacking‐fault probability and microstrain journal November 1974
A Model for Boundary Diffusion Controlled Creep in Polycrystalline Materials journal June 1963
Lattice and Grain Boundary Self‐Diffusion in Nickel journal November 1965
Elastic Properties of Metals and Alloys, I. Iron, Nickel, and Iron‐Nickel Alloys journal July 1973
Dislocation‐mechanics‐based constitutive relations for material dynamics calculations journal March 1987
Strain mapping at nanometer resolution using advanced nano-beam electron diffraction journal June 2015
Directional amorphization of boron carbide subjected to laser shock compression journal October 2016
Generating gradient germanium nanostructures by shock-induced amorphization and crystallization journal August 2017
Tunable stacking fault energies by tailoring local chemical order in CrCoNi medium-entropy alloys journal August 2018
A model for the effect of grain size on the yield stress of metals journal November 1982
Plastic deformation of nickel single crystals at low temperatures journal April 1958
A Portevin-Le Chatelier effect expected from solute atmosphere dragging journal June 1971
The temperature dependence of the critical shear stress and of work-hardening of metal crystals journal July 1954
High-Entropy Alloys: A Critical Review journal April 2014
A Novel Low-Density, High-Hardness, High-entropy Alloy with Close-packed Single-phase Nanocrystalline Structures journal December 2014
Shock compression response of high entropy alloys journal May 2016
Dislocation creep behavior of CoCrFeMnNi high entropy alloy at intermediate temperatures journal November 2018
Dislocation Theory of Yielding and Strain Ageing of Iron journal January 1949
Temperature Dependence of the Elastic Constants journal November 1970
Thermal potential, mechanical instability, and melting entropy journal May 1982
Nanoscale gold pillars strengthened through dislocation starvation journal June 2006
Correlation between Critical Temperature and Strength of Small-Scale bcc Pillars journal August 2009
Mechanism of Radiation Damage Reduction in Equiatomic Multicomponent Single Phase Alloys journal April 2016
Local Structure and Short-Range Order in a NiCoCr Solid Solution Alloy journal May 2017
Dependence of Creep Rate on Porosity journal December 1972
Einstein before 1905: The early papers on statistical mechanics journal May 1990
Thermodynamics of Solids journal October 1962
Ultrahigh Strength and High Electrical Conductivity in Copper journal April 2004
Revealing the Maximum Strength in Nanotwinned Copper journal January 2009
A fracture-resistant high-entropy alloy for cryogenic applications journal September 2014
Making strong nanomaterials ductile with gradients journal September 2014
Superplastic Extensibility of Nanocrystalline Copper at Room Temperature journal February 2000
Multicomponent intermetallic nanoparticles and superb mechanical behaviors of complex alloys journal November 2018
Growth Twins and Deformation Twins in Metals journal July 2014
Phase selection rules for cast high entropy alloys: an overview journal February 2015
Lattice strain framework for plastic deformation in complex concentrated alloys including high entropy alloys journal March 2015
Strengthening Mechanisms in γ′ Precipitating Alloys journal January 1970
Influence of microstructure on near-threshold fatigue-crack propagation in ultra-high strength steel journal August 1977
The contributions of David Tabor to the science of indentation hardness journal March 2009
Calculations of Mixing Enthalpy and Mismatch Entropy for Ternary Amorphous Alloys journal January 2000
Exploration and Development of High Entropy Alloys for Structural Applications journal January 2014
Multicomponent and High Entropy Alloys journal August 2014
Novel Multicomponent Amorphous Alloys journal January 2002
High-Entropy Alloys – A New Era of Exploitation journal November 2007

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