Abstract
The annealing behavior of nanostructured aluminum AA1050 prepared by cold
rolling to an ultrahigh strain (εvM = 6.4) has been investigated using both transmission electron
microscopy and electron backscatter diffraction techniques, paying particular attention to
changes in microstructure and texture during recovery and their influence on subsequent
recrystallization. It is found that coarsening of lamellar structures during recovery can occur via
triple junction motion, and that this process can modify the proportion of different boundary
types and texture components compared to those in the cold rolled material. Additionally, the
heavily deformed material is characterized by different textures and different spatial
arrangements of rolling texture components in the center and subsurface. It is found that
changes in the misorientation distribution and texture during coarsening are greatly affected by
the initial spatial distribution of crystallographic orientations. In particular, the reduction in the
fraction of high angle boundaries observed during recovery is much more pronounced in the
subsurface layers than in the center layer. The initial through-thickness heterogeneity is thus
greatly enhanced during recovery, which leads to significant differences in recrystallized
microstructure and texture in the different layers.
Original language | English |
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Article number | 012083 |
Journal | I O P Conference Series: Materials Science and Engineering |
Volume | 82 |
Number of pages | 4 |
ISSN | 1757-8981 |
DOIs | |
Publication status | Published - 2015 |
Event | 17th International Conference on Textures of Materials - Dresden, Germany Duration: 24 Aug 2014 → 29 Aug 2014 Conference number: 17 http://www.icotom17.com/?node=1 |
Conference
Conference | 17th International Conference on Textures of Materials |
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Number | 17 |
Country | Germany |
City | Dresden |
Period | 24/08/2014 → 29/08/2014 |
Internet address |