Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Fundamental electronic structure and multiatomic bonding in 13 biocompatible high-entropy alloys

Journal Article · · npj Computational Materials
High-entropy alloys (HEAs) have attracted great attention due to their many unique properties and potential applications. The nature of interatomic interactions in this unique class of complex multicomponent alloys is not fully developed or understood. We report a theoretical modeling technique to enable in-depth analysis of their electronic structures and interatomic bonding, and predict HEA properties based on the use of the quantum mechanical metrics, the total bond order density (TBOD) and the partial bond order density (PBOD). Application to 13 biocompatible multicomponent HEAs yields many new and insightful results, including the inadequacy of using the valence electron count, quantification of large lattice distortion, validation of mechanical properties with experiment data, modeling porosity to reduce Young’s modulus. This work outlines a road map for the rational design of HEAs for biomedical applications.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1617778
Journal Information:
npj Computational Materials, Journal Name: npj Computational Materials Journal Issue: 1 Vol. 6; ISSN 2057-3960
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (51)

Biodegradable Metals for Cardiovascular Stents: from Clinical Concerns to Recent Zn-Alloys journal April 2016
The biological response to orthopaedic implants for joint replacement: Part I: Metals: BIOCOMPATIBILITY OF ORTHOPAEDIC IMPLANTS
  • Gibon, Emmanuel; Amanatullah, Derek F.; Loi, Florence
  • Journal of Biomedical Materials Research Part B: Applied Biomaterials, Vol. 105, Issue 7 https://doi.org/10.1002/jbm.b.33734
journal June 2016
Berechnung der Fließgrenze von Mischkristallen auf Grund der Plastizitätsbedingung für Einkristalle . journal January 1929
High-Entropy Alloys book January 2016
First-Principles Calculation book January 2019
Low-density, refractory multi-principal element alloys of the Cr–Nb–Ti–V–Zr system: Microstructure and phase analysis journal March 2013
A critical review of high entropy alloys and related concepts journal January 2017
Phase selection rule for Al-doped CrMnFeCoNi high-entropy alloys from first-principles journal November 2017
Lattice distortion in a strong and ductile refractory high-entropy alloy journal November 2018
Phase stability and mechanical properties of novel high entropy transition metal carbides journal March 2019
An understanding of high entropy alloys from phase diagram calculations journal June 2014
Calculating elastic constants in high-entropy alloys using the coherent potential approximation: Current issues and errors journal January 2016
Fundamental deformation behavior in high-entropy alloys: An overview journal October 2017
Comprehensive data compilation on the mechanical properties of refractory high-entropy alloys journal December 2018
Database on the mechanical properties of high entropy alloys and complex concentrated alloys journal December 2018
Microscopic theory of hardness and design of novel superhard crystals journal July 2012
Enhanced mechanical properties of HfMoTaTiZr and HfMoNbTaTiZr refractory high-entropy alloys journal July 2015
(TiZrNbTa)-Mo high-entropy alloys: Dependence of microstructure and mechanical properties on Mo concentration and modeling of solid solution strengthening journal April 2018
Evaluating elastic properties of a body-centered cubic NbHfZrTi high-entropy alloy – A direct comparison between experiments and ab initio calculations journal June 2019
Effect of Al addition on mechanical properties and microstructure of refractory AlxHfNbTaTiZr alloys journal March 2015
Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys journal January 2019
Solid solution strengthening theories of high-entropy alloys journal May 2019
Database development and Calphad calculations for high entropy alloys: Challenges, strategies, and tips journal May 2018
High-entropy alloy: challenges and prospects journal July 2016
Elastic and plastic properties of as-cast equimolar TiHfZrTaNb high-entropy alloy journal January 2016
NbTaV-(Ti,W) refractory high-entropy alloys: Experiments and modeling journal September 2016
TiZrNbTaMo high-entropy alloy designed for orthopedic implants: As-cast microstructure and mechanical properties journal April 2017
Structural, mechanical and electronic properties of (TaNbHfTiZr)C high entropy carbide under pressure: Ab initio investigation journal December 2018
Microstructures and properties of high-entropy alloys journal April 2014
Novel TiNbTaZrMo high-entropy alloys for metallic biomaterials journal March 2017
Modeling Off-Stoichiometry Materials with a High-Throughput Ab-Initio Approach journal September 2016
Mixed-up metals make for stronger, tougher, stretchier alloys journal May 2016
Metastable high-entropy dual-phase alloys overcome the strength–ductility trade-off journal May 2016
Poisson's ratio and modern materials journal October 2011
The high-throughput highway to computational materials design journal February 2013
Predictive multiphase evolution in Al-containing high-entropy alloys journal October 2018
High-entropy high-hardness metal carbides discovered by entropy descriptors journal November 2018
Electronic Population Analysis on LCAO–MO Molecular Wave Functions. I journal October 1955
Tunable stacking fault energies by tailoring local chemical order in CrCoNi medium-entropy alloys journal August 2018
The Elastic Behaviour of a Crystalline Aggregate journal May 1952
Electronic Structure Methods for Complex Materials book May 2012
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
First-Principles Calculation of Stress journal February 1983
Special quasirandom structures journal July 1990
Generalized Gradient Approximation Made Simple journal October 1996
Ab Initio Calculation of Elastic Constants of Ceramic Crystals journal October 2007
Outstanding radiation resistance of tungsten-based high-entropy alloys journal March 2019
Order emerging from disorder journal October 2019
Modeling the structure and thermodynamics of high-entropy alloys journal July 2018
Elasticity of high-entropy alloys from ab initio theory journal August 2018
A Review of Solid-Solution Models of High-Entropy Alloys Based on Ab Initio Calculations journal November 2017

Figures / Tables (7)


Similar Records

Porosity modeling in a TiNbTaZrMo high-entropy alloy for biomedical applications
Journal Article · Wed Dec 13 19:00:00 EST 2023 · RSC Advances · OSTI ID:2281103

First-principles calculation of lattice distortions in four single phase high entropy alloys with experimental validation
Journal Article · Tue Aug 24 20:00:00 EDT 2021 · Materials & Design · OSTI ID:1872865

Ab Initio Simulation of Structure and Properties in Ni-Based Superalloys: Haynes282 and Inconel740
Journal Article · Sun Jan 15 19:00:00 EST 2023 · Materials · OSTI ID:2418157

Related Subjects