29 citations · 29 across the 3 of their papers we have counts for
7 papers · 1 filter
Disconnection-Mediated Twin/Twin-Junction Migration in FCC metals
Mingjie Xu, Kongtao Chen, Fan Cao +7
We present the results of novel, time-resolved, in situ HRTEM observations, molecular dynamics (MD) simulations, and disconnection theory that elucidate the mechanism by which the…
Grain-Boundary Topological Phase Transitions
Kongtao Chen, David J. Srolovitz, Jian Han
The formation and migration of disconnections (line defects constrained to the grain boundary (GB) plane with both dislocation and step character) control many of the kinetic and d…
On the Temperature Dependence of Grain Boundary Mobility
Kongtao Chen, Jian Han, David J. Srolovitz
The grain boundary (GB) mobility relates GB velocity to the thermodynamic driving forces and is central to our understanding of microstructure evolution in polycrystals. Recent mol…
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…