Atomic-level study of twin nucleation from face-centered-cubic/body-centered-cubic interfaces in nanolamellar composites

作者：Han W Z^*; Carpenter J S; Wang J; Beyerlein I J; Mara N A

来源：Applied Physics Letters, 2012, 100(1): 011911.

DOI：10.1063/1.3675447

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.

• 出版日期2012-1-2
• 单位Los Alamos