K. Kashihara et al., DEFORMED STRUCTURE AND CRYSTAL ORIENTATION AT DEFORMATION BANDS IN [011]ALUMINUM SINGLE-CRYSTALS, Materials transactions, JIM, 37(4), 1996, pp. 564-571
To clarify relationship between activate slip systems and formation of
recrystallized grains along deformation bands (DBs), structural chang
es for 3 to 70% tensile strains in 99.99 mass% aluminum single crystal
s with a tensile axis of [011] were investigated first of all in this
paper. Above 15% strains, the DBs were formed, and two different types
of pseudo-boundaries which appear ''straight'' (SPB) and ''wavy'' (WP
B) ones were observed between the DBs and deformed matrixes (DMs). The
authors classified the DB as ''a special type of band of secondary sl
ip'' (SBSS). The development of SBSS structure occurred simultaneously
due to two processes, the increase of the number of SBSS and the migr
ation of the WPBs. The ''secondary deformation bands'' (SDBs) called b
y the authors started to form along the WPBs at 70% strain. Dynamic re
covery in the SDBs near the WPB might occur al 70% strain in deformati
on, because of operation of the third and/or fourth activated slip pla
ne (s) in addition to the preexisting operation of the two slip planes
. The effect of changes in deformation structure on recrystallization
behavior will be reported elsewhere.