We report recent work on twinning and detwinning in fcc and hcp metals based on the in situ and ex situ TEM observations and molecular dynamics simulations. Three aspects are discussed in this paper. (1) Detwinning in single-phase Cu with respect to growth twins, (2) deformation twinning in Ag-Cu composites, and (3) deformation twinning mechanisms in hcp metals. The main conclusion is that the atomic structures of interfaces (twin boundaries, two-phase interfaces, and grain boundaries) play a crucial role in nucleating and propagating deformation twins.
|Original language||English (US)|
|Number of pages||4|
|State||Published - Dec 1 2011|
|Event||3rd International Conference on Heterogeneous Materials Mechanics, ICHMM 2011 - Shanghai, China|
Duration: May 22 2011 → May 26 2011
|Other||3rd International Conference on Heterogeneous Materials Mechanics, ICHMM 2011|
|Period||5/22/11 → 5/26/11|