Atomic-level study of twin nucleation from face-centered-cubic/body-centered-cubic interfaces in nanolamellar composites
Abstract
We report deformation twinning in Cu within accumulative roll-bonded Cu-Nb nanolamellar composites. Twins appear connected to the Nb{112}//Cu{112} interface with the Kurdjumov-Sachs orientation relationship, which we show to be ordered and faceted. The interface adopts a different faceted structure after twinning. Our analysis suggests that deformation twinning involves facet dissociation and slip-transfer from the Nb layer to the Cu layer due to a geometrically favorable slip transmission pathway.
- Publication:
-
Applied Physics Letters
- Pub Date:
- January 2012
- DOI:
- 10.1063/1.3675447
- Bibcode:
- 2012ApPhL.100a1911H
- Keywords:
-
- copper;
- interface structure;
- multilayers;
- nanocomposites;
- niobium;
- nucleation;
- twinning;
- 61.72.Mm;
- 64.60.qj;
- 68.55.A-;
- 81.07.-b;
- 68.65.Ac;
- Grain and twin boundaries;
- Studies of nucleation in specific substances;
- Nucleation and growth;
- Nanoscale materials and structures: fabrication and characterization;
- Multilayers