BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Disconnection Dynamics and Grain Boundary Kinetics: their surprisi
 ng effects on microstructural evolution - Professor David Srolovitz\, The 
 University of Hong Kong
DTSTART:20240209T140000Z
DTEND:20240209T150000Z
UID:TALK209728@talks.cam.ac.uk
CONTACT:46601
DESCRIPTION:I begin with a pedagogical introduction to how grain boundarie
 s and other interfaces in crystalline materials move. My approach focuses 
 on bicrystallography and the special types of line defects that only exist
  at interfaces\, i.e.\, disconnections. Disconnections have both step char
 acter and dislocation character. Their step nature implies that their moti
 on leads to interface motion and their dislocation nature means that they 
 interact with and are sources of stress. The main focus of this presentati
 on is how to apply this modern understanding of how interfaces move to the
  evolution of microstructure and morphology. I will show several examples 
 from atomic-scale simulations and microstructure evolution simulations bas
 ed on front tracking and phase field. I will show some surprising results 
 that demonstrate that the application of cyclic stress and/or temperature 
 drive grain boundary migration in particular directions and accelerate gra
 in growth
LOCATION:Department of Engineering - LT2
END:VEVENT
END:VCALENDAR