DEFORMATION AND RECRYSTALLIZATION IN SILV ER BICRYSTALS WITH DIFFERENT TENSILE DIRECTIONS

In order to clarify the effect of activated slip systems on recrystall ization along a grain boundary, two kinds of 99.999 mass% silver bicry stal specimens which have the same grain boundary and different tensil e directions were prepared. When they were deformed in tension to a st rain of 0.3, the grain boundaries were changed into different ones wit h different structures because of the operation of different slip syst ems. After annealing, recrystallized grains were formed mainly through twinning and sometimes through the [111] rotation mechanism, along th e grain boundary toward which dislocations with a large screw componen t pile up.