Simulations of nanocrystalline metals at the atomic scale. What can we do? What can we trust?

TL;DR

This paper reviews atomic-scale simulations of nanocrystalline metals, highlighting key findings like the reverse Hall-Petch effect and discussing the limitations affecting simulation reliability.

Contribution

It provides an overview of recent simulation results and critically examines the factors influencing the trustworthiness of atomic-scale modeling of nanocrystalline metals.

Findings

Observation of reverse Hall-Petch effect

Discussion of simulation limitations

Insights into factors affecting simulation reliability

Abstract

In recent years it has become possible to study the properties of nanocrystalline metals through atomic-scale simulations of systems with realistic grain sizes. A brief overview of the main results is given, such as the observation of a reverse Hall-Petch effect - a softening of the metal when the grain size is reduced. The limitations of computer simulations are discussed, with a particular focus on the factors that may influence the reliability of this kind of simulations.