Subgrain Boundaries in ECAP Aluminium
The effect of ECAP technology on the subgrain structure of coarse-grained pure aluminium is described by means of the orientation imaging microscopy (the selected lower bounds of misorientation (disclination) are = 2o, 5o, 10o and 15o). Standard profile and intercept counts carried out in three suitably oriented and mutually perpendicular section planes and along 18 systematically oriented directions, resp., are used to examine the subgrain and grain structures after the number of passes N = 2, 4, 8, 12 as well the effect of subsequent annealing (several hours at 473K). The local and overall non-homogeneity and anisotropy of boundary structures have also been evaluated.
Young Won Chang, Nack J. Kim and Chong Soo Lee
I. Saxl et al., "Subgrain Boundaries in ECAP Aluminium", Materials Science Forum, Vols. 561-565, pp. 813-816, 2007