5 papers
Vacancy diffusion in multi-principal element alloys: the role of chemical disorder in the ordered lattice
Spencer L. Thomas, Srikanth Patala
Many of the purported virtues of Multi-Principal Element Alloys (MPEAs), such as corrosion, high-temperature oxidation and irradiation resistance, are highly sensitive to vacancy d…
A Continuum Multi-Disconnection-Mode Model for Grain Boundary Migration
Chaozhen Wei, Spencer L. Thomas, Jian Han +2
We study the Grain Boundary (GB) migration based on the underlying disconnection structure and mechanism. Disconnections are line defects that lie solely within a GB and are charac…
Grain Boundary Shear Coupling is Not a Grain Boundary Property
Kongtao Chen, Jian Han, Spencer L. Thomas +1
Shear coupling implies that all grain boundary (GB) migration necessarily creates mechanical stresses/strains and is a key component to the evolution of all polycrystalline microst…
Grain-Boundary Kinetics: A Unified Approach
Jian Han, Spencer L. Thomas, David J. Srolovitz
Grain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a wide-range of physical properties of polycrystals. Control over GB…
Machine learning determination of atomic dynamics at grain boundaries
Tristan A. Sharp, Spencer L. Thomas, Ekin D. Cubuk +3
In polycrystalline materials, grain boundaries are sites of enhanced atomic motion, but the complexity of the atomic structures within a grain boundary network makes it difficult t…