71 citations · 192 across the 6 of their papers we have counts for
5 papers · 1 filter
Grain Boundary Motion on Curved Substrate
Kongtao Chen
Grain boundary (GB) kinetics is important for many applications in 2d materials and metal thin films. To study how the substrate shape affects GB mobility and kinetics, we develop…
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…
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…