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Title: Multiphase aluminum equations of state via density functional theory

Journal Article · · Physical Review B

We have performed density functional theory (DFT) based calculations for aluminum in extreme conditions of both pressure and temperature, up to five times compressed ambient density, and over 1 000 000 K in temperature. In order to cover such a domain, DFT methods including phonon calculations, quantum molecular dynamics, and orbital-free DFT are employed. Our results are then used to construct a SESAME equation of state for the aluminum 1100 alloy, encompassing the fcc, hcp, and bcc solid phases as well as the liquid regime. We also provide extensive comparison with experiment, and based on this we also provide a slightly modified equation of state for the aluminum 6061 alloy.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1414090
Alternate ID(s):
OSTI ID: 1328447
Report Number(s):
LA-UR-16-22318; PRBMDO; TRN: US1800625
Journal Information:
Physical Review B, Vol. 94, Issue 14; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

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Cited By (10)

Toroidal diamond anvil cell for detailed measurements under extreme static pressures journal July 2018
Physically informed artificial neural networks for atomistic modeling of materials journal May 2019
A universal strategy for the creation of machine learning-based atomistic force fields journal September 2017
Effect of particle packing and density on shock response in ordered arrays of Ni + Al nanoparticles journal January 2019
X-ray diffraction of ramp-compressed aluminum to 475 GPa journal August 2018
Pressure evolution of transverse collective excitations in liquid Al along the melting line journal July 2019
Thermal electronic properties of aluminum under pressure: The role of s p to 3 d electron transfer journal November 2019
Path integral Monte Carlo simulations of warm dense aluminum journal June 2018
Measurement of Body-Centered-Cubic Aluminum at 475 GPa journal October 2017
Atom-in-jellium equations of state in the high energy density regime text January 2019

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