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Efficient Ab initio Modeling of Random Multicomponent Alloys

Journal Article · · Physical Review Letters
 [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Here, we present in this Letter a novel small set of ordered structures (SSOS) method that allows extremely efficient ab initio modeling of random multi-component alloys. Using inverse II-III spinel oxides and equiatomic quinary bcc (so-called high entropy) alloys as examples, we also demonstrate that a SSOS can achieve the same accuracy as a large supercell or a well-converged cluster expansion, but with significantly reduced computational cost. In particular, because of this efficiency, a large number of quinary alloy compositions can be quickly screened, leading to the identification of several new possible high entropy alloy chemistries. Furthermore, the SSOS method developed here can be broadly useful for the rapid computational design of multi-component materials, especially those with a large number of alloying elements, a challenging problem for other approaches.
Research Organization:
Idaho National Laboratory, Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC07-05ID14517; AC52-06NA25396
OSTI ID:
1357610
Alternate ID(s):
OSTI ID: 1240764
Report Number(s):
INL/JOU--16-37959
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 116; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

Revealing the Microstates of Body-Centered-Cubic (BCC) Equiatomic High Entropy Alloys journal June 2017
Science and technology in high-entropy alloys journal January 2018
First-principles-based prediction of yield strength in the RhIrPdPtNiCu high-entropy alloy journal February 2019
Theoretical investigations on structural, elastic, thermodynamic and electronic properties of Al 3 Ti and Al 3 V compounds in L1 2 structure under high pressure journal February 2019
Computational characterization of the structural and mechanical properties of Al x CoCrFeNiTi 1− x high entropy alloys journal July 2019
Intrinsic ductility of random substitutional alloys from nonlinear elasticity theory journal November 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 Multi-Scale Computational Modeling Tools for Predicting Structures and Properties of Multi-Principal Element Alloys journal February 2019

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