Predicting phase behavior of grain boundaries with evolutionary search and machine learning

Q Zhu, A Samanta, B Li, RE Rudd, T Frolov - Nature communications, 2018 - nature.com
The study of grain boundary phase transitions is an emerging field until recently dominated
by experiments. The major bottleneck in the exploration of this phenomenon with atomistic …

The vibrational entropy spectra of grain boundary segregation in polycrystals

N Tuchinda, CA Schuh - Acta Materialia, 2023 - Elsevier
The vibrational contributions to the energetics of grain boundary segregation are calculated
for binary Ni polycrystals with solutes of Pd, Pt, Ag, Au and Cu. The computational challenge …

Uncovering the effects of interface-induced ordering of liquid on crystal growth using machine learning

R Freitas, EJ Reed - Nature communications, 2020 - nature.com
The process of crystallization is often understood in terms of the fundamental microstructural
elements of the crystallite being formed, such as surface orientation or the presence of …

A joint diffusion/collision model for crystal growth in pure liquid metals

H Men - Nature Communications, 2024 - nature.com
The kinetics of atomic attachments at the liquid/solid interface is one of the foundations of
solidification theory, and to date one of the long-standing questions remains: whether or not …

Data-centric framework for crystal structure identification in atomistic simulations using machine learning

HW Chung, R Freitas, G Cheon, EJ Reed - Physical Review Materials, 2022 - APS
Atomic-level modeling performed at large scales enables the investigation of mesoscale
materials properties with atom-by-atom resolution. The spatial complexity of such cross …

Free energy of grain boundary phases: Atomistic calculations for grain boundary in Cu

R Freitas, RE Rudd, M Asta, T Frolov - Physical Review Materials, 2018 - APS
Atomistic simulations are employed to demonstrate the existence of a well-defined
thermodynamic phase transformation between grain boundary (GB) phases with different …

Dislocation content of grain boundary phase junctions and its relation to grain boundary excess properties

T Frolov, DL Medlin, M Asta - Physical Review B, 2021 - APS
We analyze the dislocation content of grain boundary (GB) phase junctions, ie, line defects
separating two different GB phases coexisting on the same GB plane. While regular GB …

Size effect on melting temperatures of alumina nanocrystals: Molecular dynamics simulations and thermodynamic modeling

N Joshi, N Mathur, T Mane, D Sundaram - Computational Materials Science, 2018 - Elsevier
Molecular dynamics (MD) simulations and thermodynamic analysis are conducted to
investigate size effect on melting point of alumina nanocrystals. Different geometries …

Misfit strain induced phase transformation at a basal/prismatic twin boundary in deformation of magnesium

P Chen, F Wang, B Li - Computational Materials Science, 2019 - Elsevier
Phase transformation from hexagonal close-packed (HCP) to face-centered cubic (FCC)
does not occur in plastic deformation of pure magnesium. In this work, a reversible HCP→ …

In-plane characterization of structural and thermodynamic properties for steps at faceted chemically heterogeneous solid/liquid interfaces

H Liang, BB Laird, M Asta, Y Yang - Acta Materialia, 2018 - Elsevier
We present a methodology for studying steps at faceted chemically heterogeneous
solid/liquid interfaces, based on equilibrium molecular-dynamics simulations. The …